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Rezultatele pentru phRezultate gasite: 1709
Catalytic destruction of aromatic VOCs on SCR-DeNOx commercial catalyst
Environmental Engineering and Management Journal › Vol. 6 › Nr. 1 AbstractAromatic volatile organic compounds (VOCs) proved to have enhanced polluting behavior upon the atmosphere and human health. Their catalytic destruction is an alternative for environmental pollution reduction in the case of gaseous emissions with low contents of VOC.In this paper, an experimental study is presented, concerning the conversion of benzene and its mono-halogenated derivatives on SCR-DeNOx (V2O5-WO3/TiO2) commercial catalyst, specific for the reduction process of nitrogen oxid... Autori: Florin Bandrabur, Heinz Koser, Ion Balasanian, Liliana Lazar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25105
Alternative energy sources in transition countries. The case of bioenergy in Ukraine
Environmental Engineering and Management Journal › Vol. 6 › Nr. 1 AbstractDuring the transition to a market economy, many countries with a planned economy in Central and Eastern Europe face similar challenges when the established socio-economic systems and infrastructures deemed inefficient in a market economy. Also new issues are being raised by the trends of globalization and the vision of sustainable development. In the energy sector the challenges raised by the Kyoto Protocol and its implementation mechanisms are especially interesting, because they are in... Autori: Andrius Plepys, Giulia Gervasoni, Jean-Philippe Boutin, Kes McCormick, Kristin Seyboth, Luis Mundaca, Marko Ratton, Patrick Lamers, Robert Hlep ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25104
Environmental Engineering and Management Journal, Vol. 6 Nr. 2
Environmental Engineering and Management Journal › Vol. 6 › Nr. 2 Include urmatoarele articoleâ€? Degradation of alcian blue 8 gx by heterogeneous and homogeneous photocatalytic processesâ€? Evaluating the performance of solid waste management modelsâ€? Bioreactors with stirred bed of immobilized cells 1. Studies on mixing efficiencyâ€? Fugitive emissions estimation from petroleum storage tanksâ€? New Ni(II) coordination polymers with insulating and anticorrosive propertiesâ€? Determination of water quality deterioration at pilgrimage centre along river netrav... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25196
Environmental Engineering and Management Journal, Vol. 6 Nr. 1
Environmental Engineering and Management Journal › Vol. 6 › Nr. 1 Contine urmatoarele articole:??Â?Â? Alternative energy sources in transition countries. The case of bioenergy in Ukraine??Â?Â? Catalytic destruction of aromatic VOCs on SCR-DeNOx commercial catalyst??Â?Â? Ecological Economics And Transport Systems??Â?Â? Bioleaching of uranyl ions from uranium ores by some algae??Â?Â? Irreversible affinity immobilization of lentil seedling??Â?Â? Evaluation of artificial neural network techniques for river flow forecasting??Â?Â? Hydrogen and sustainable energy. Re... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25194
Bioleaching of uranyl ions from uranium ores by some algae
Environmental Engineering and Management Journal › Vol. 6 › Nr. 1 AbstractIt was investigated the bioleaching of uranyl ions from uranium ores, in aquatic medium with algae: Scenedesmus quadricauda and Nostoc linkia under different experimental conditions. The oxidation of U(IV) to U(VI) species, like uranyl ions was done by means of the atomic oxygen generated through photosynthesis by the aquatic medium from solution above of uranium ores.After almost 10 days of direct contact with the given microorganisms, it was observed a bioleaching degree between 10% an... Autori: Alexandru Cecal, Rodica Calmoi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25107
Irreversible affinity immobilization of lentil seedling
Environmental Engineering and Management Journal › Vol. 6 › Nr. 1 An aliphatic-amine-bearing chromatographic support, based on commercial silica, was prepared and tested as potential matrix for affinity immobilization of a copper/topaquinone-containing amine oxidase from lentil seedlings. The support proved to be noticeably effective in immobilizing the enzyme with concomitant purification and activity retention. The immobilization yields and some properties of this preparation were also determined and compared with those of the soluble enzyme. High activity r... Autori: Barbara Noli, Enrico Sanjust, Francesca Sollai, Giovanni Floris ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25108
Hydrogen and sustainable energy. Research for hydrogen production
Environmental Engineering and Management Journal › Vol. 6 › Nr. 1 Abstract Hydrogen could be considered a synthetic secondary power carrier fuel in the years to come, subsequent to the fossil fuels economy. Thus the concept 'hydrogen economy' shall be defined, and it will also have a great influence in the future years.The field of power generation (producing electric power), transports, (electric cars), chemistry (hydrogen is a major raw material) are potential users of hydrogen.The experts support, by means of a series of economical and strategic analysis ma... Autori: Corina Rădulescu, Elisabeta Păsculete, Florentina Condrea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25111
Solid waste management systems assessment: the municipality's point-of-view
Environmental Engineering and Management Journal › Vol. 6 › Nr. 1 AbstractThe objective of the paper is to present sustainability indicators for municipal solid waste management (MSWM). Sustainability implies environmental, economic and social acceptance. The complexity of the system-in-focus requires the employment of a systems (or cybernetic) approach: Acceptance implies clear objectives, from a specific point of view (here, the viewpoint of the municipal administration is taken), over a time horizon covering at least two generations, a life-cycle considerat... Autori: Demetrios Panagiotakopoulos, Konstantinia Tsilemou ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25112
Degradation of alcian blue 8 gx by heterogeneous and homogeneous photocatalytic processes
Environmental Engineering and Management Journal › Vol. 6 › Nr. 2 <!--[if !supportEmptyParas]--> The photocatalytic degradation of Alcian Blue 8 GX, a copper phthalocyanine cationic dye, has been investigated in aqueous solutions both in heterogeneous and homogeneous systems. Initial colour removal rates in different conditions were calculated in both cases. Influence of amounts of H2O2 and FeCl3 was studied and compared for the two photocatalytic systems. Finally, some conclusions regarding the efficiency of the two photocatalytic processes were es... Autori: Anca Florentina Caliman, Chrysanthi Berberidou, , Liliana Lazar, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25114
Bioreactors with stirred bed of immobilized cells 1. Studies on mixing efficiency
Environmental Engineering and Management Journal › Vol. 6 › Nr. 2 The models describing the flow or the heat and mass transfer in stirred bioreactors can be easily adapted for the continuous phase from the stirred bed bioreactors. But, for the immobilized biocatalyst phase, new models have to be established. Therefore, in this paper the influences of the main factors on mixing for a bioreactor with stirred bed of S. cerevisiae immobilized cells in alginate have been analyzed.. The mixing efficiency continuously increases with rotation speed acceleration for th... Autori: Anca-Irina Galaction, Anca-Marcela Lupasteanu, Dan Caşcaval ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25116
Fugitive emissions estimation from petroleum storage tanks
Environmental Engineering and Management Journal › Vol. 6 › Nr. 2 Liquid petroleum fuel products such as High Speed Diesel (HSD), Superior Kerosene Oil (SKO), Motor Sprit (MS) are stored in floating roof tanks under atmospheric conditions. The Storage tanks are provided with fittings like rimseals, gauge float wells,sample ports, deck drains and access hatches and becomes the sources of hydrocarbon vapour emissions released to the atmosphere. The net throughput and the annual turnovers of the fuel products and annual average meteorological conditions were cons... Autori: Bandari Chakradhar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25117
New Ni(II) coordination polymers with insulating and anticorrosive properties
Environmental Engineering and Management Journal › Vol. 6 › Nr. 2 A series of new Ni(II) poly-phosphinates have been synthesised using Ni(II) acetylacetonate as nickel precursor and a succession of ligands derived from phosphinic acid: ethyl-butyl-phosphinic acid, ethyl-butyl-thio-phosphinic acid, and respectively ethylbutyl-di-thio-phosphinic acid. Chemical analysis gel-chromatography, infrared spectroscopy (IR), spin electronic resonance (RES), X-ray diffraction (XRD), thermal gravimetric analysis (TGA), electrical resistance measurements at different temper... Autori: Daniel Sutiman, Doina Sibiescu, , Mircea Teodor Nechita ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25118
Degradation of gas-phase trichloroethylene overthin-film TiO2 photocatalyst in multi-modules reactor
Environmental Engineering and Management Journal › Vol. 6 › Nr. 2 The present paper examined the photocatalytic degradation (PCD) of gas-phase trichloroethylene (TCE) over thin-film TiO2. A large-scale treatment of TCE was carried out using scale-up continuous flow photo-reactor that nine reactors were arranged in parallel and serial. The parallel or serial arrangement is a significant factor to determine the special arrangement of whole reactor module as well as to compact the multi-modules in a continuous flow reactor. The conversion of TCE according to the ... Autori: Gyung Soo Kim, Sang Bum Kim, Sung Chang Hong ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25121
Environmental Engineering and Management Journal, Vol. 6 No.4
Environmental Engineering and Management Journal › Vol. 6 › Nr. 4 Iinclude urmatoarele articole:â€? Process water of papermaking: model building and characterizationâ€? Landfill inventory in the Republic of Moldova: problems and solutionsâ€? Floodplain revegetation and river basin restorationâ€? Environmental problems of copper complex in Bor areaâ€? Researches on air micro flora determination from public indoor spaces and hospital wards in an urban areaâ€? Current practice of solid waste management in Malaysia and its disposalâ€? An assessment of potential he... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25199
Removal of zinc (II) from aqueous solutions by romanian sphagnum peat moss
Environmental Engineering and Management Journal › Vol. 6 › Nr. 3 In recent years the removal of toxic substances especially heavy metals from water and wastewater by using of non-conventional low-cost sorbent (industrial wastes and some natural material including microorganisms, plant-derived materials, agricultural products and by-products, mineral oxides, clays) has received much attention. In this paper efficiency of Zn (II) removal from aqueous solutions by sorption onto Romanian sphagnum peat moss was studied in batch experiments involving process parame... Autori: Angelica Kicsi, , Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25126
Removal of persistent organic pollutants from textile wastewater by membrane processes
Environmental Engineering and Management Journal › Vol. 6 › Nr. 3 AbstractThe textile industry is a large water consumer. Stringent regulations of wastewater characteristics require the use of membrane processes for the removal of persistent organic pollutants (POPs) from textile wastewater prior to discharge or recycling of these effluents.This paper presents an overview of research related to the removal of persistent organic pollutants from textile industry by membrane processes, discussing also the correlations with actual pre-treatment and removal rates. ... Autori: , Corina - Petronela Musteret ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25127
Electrochemical investigations on the behaviour of Ni-Cr based dental materials in the sodium chloride - oxalic acid - lactic acid system
Environmental Engineering and Management Journal › Vol. 6 › Nr. 3 AbstractThe corrosion behaviour of three commercial nickel-chromium based dental materials was investigated by electrochemical methods in a corroding mixture of sodium chloride, oxalic acid and lactic acid. In order to establish electrochemical parameters of the corrosion process, linear and cyclic polarization curves were plotted. The samples performances in the corroding system were investigated by weight loss, pH and electrical conductivity measurements. The quantitative analysis related with... Autori: , Daniel Mareci, Daniel Sutiman, Mircea Teodor Nechita ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25132
Marine micro and macro algal species as biosorbents for heavy metals
Environmental Engineering and Management Journal › Vol. 6 › Nr. 3 AbstractThis paper reviews some practical aspects of the application of algal biomass for the biosorption of heavy metals from wastewater. The ability of different algal species to remove metals varies with algal group and morphology, with the speciation of specific metals and their competition with others in wastewater, and with environmental or process factors. The scattered literature on the uptake of heavy metals by both living and dead algal biomass - both macroalgae and immobilized microal... Autori: Loredana Branza, Maria Gavrilescu, Matthew J. Dring ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25133
Process water of papermaking: model building and characterization
Environmental Engineering and Management Journal › Vol. 6 › Nr. 4 Actual trends in papermaking concern on the use of recycled fibers and minimizing effluent volume by closing water circuit. Beside environmental and economic advantages, both trends can lead to serious problems in papermaking processes due to contaminants introduced with recycled fibers and their accumulation in closed water system. A key factor to avoid disturbances in the papermaking is to prevent the accumulation of detrimental compounds. In this respect, first it is necessary to find out met... Autori: Dan Belosinschi, Elena Bobu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25134
Floodplain revegetation and river basin restoration
Environmental Engineering and Management Journal › Vol. 6 › Nr. 4 AbstractDuring the modern history the ability of plant roots to consolidate and strengthen the soil was exploited twice in France: once in1867 by Joseph Monier who created the reinforced concrete, and then in 1962 by Henry Vidal who created structured soils.The paper presents the some results obtained on the ecological protection of floodplain in major riverbeds. The aerodynamic modeling represents an efficient, economic and easy way to work with. The main condition of successful experiments is ... Autori: Ana Virsta ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25136
Environmental problems of copper complex in Bor area
Environmental Engineering and Management Journal › Vol. 6 › Nr. 4 AbstractThe paper discusses some environmental problems caused by the presence of the copper mining and processing complex in the Bor area (Eastern Serbia). The Bor area is a serious hot spot in Serbia. Unsupervised operation of the mining company RTB Bor, without any protective measures, has led to extreme pollution of the Bor River, the Danube and underground waters, soil pollution with heavy metals, air-pollution with sulfur-dioxide etc. Recommendations are suggested as follows: a sustainable... Autori: Slavka Zeković ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25137
Zero discharge: technological progress towards eliminating pulp mill liquid effluent
Environmental Engineering and Management Journal › Vol. 6 › Nr. 5 AbstractThe goal of this paper is to examine the potential for ecologically and economically sustainable kraft pulp mills. This paper reviews technical and scientific literature on a wide range of factors that will influence the overall impact of a pulp mill on its total environment. The emphasis is on efforts to achieve "closed-loop," or Totally Effluent Free (TEF) mills which eliminate all liquid effluent and minimize the quantity and environmental impact of air and land discharges. An attempt... Autori: Adrian Puitel, Dan Gavrilescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25202
Current practice of solid waste management in Malaysia and its disposal
Environmental Engineering and Management Journal › Vol. 6 › Nr. 4 AbstractMalaysia is a country that has recorded a phenomenal economic development success story. One of the most important problems is solid waste due to inadequate management practices. This resulted in an increase in the amount of waste generated. The national average in at 0.5-0.8 kg/person/day, but in the cities the figures have escalated to 1.7 kg/person/day. This paper addresses the current practice of solid waste management and its disposal in Malaysia. Currently, the waste management app... Autori: Abdelnaser Omran, Abdullah Mahmood, ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25140
Wet hydrogen peroxide catalytic oxidation of parachlorophenol over clay based catalysts
Environmental Engineering and Management Journal › Vol. 6 › Nr. 5 This study presents an evaluation of the catalytic performances of Fe containing clay-based catalysts for the wet hydrogen peroxide catalytic oxidation (WHPCO) of 4-chlorophenol (4-CP) aqueous wastes. The catalysts were prepared by well-established techniques, their properties being determined by DRX, BET and chemical analysis techniques. All the tests were performed on a laboratory scale set-up. The ion-exchanged clays were the most active catalysts (100 % 4-CP and 84 % COD removal for Fe-Mt) b... Autori: , Cezar Catrinescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25157
Electrical properties of SnO2-Pt/Al2O3 in reduction atmosphere
Environmental Engineering and Management Journal › Vol. 6 › Nr. 5 AbstractCatalysts having mobile electrons in bulk such as metals and semiconductors are good solid materials for red/ox type of reaction (oxidation) and can be effectively used in gas sensing devices as well. The aims of this work were: (i) to investigate the surface behavior of Pt(0.28%)/Al2O3 and SnO2(2.94%)-Pt(0.28%)/Al2O3 samples in inert atmosphere (He) and in reducing atmosphere containing helium-cyclopropane gas mixture under ambient condition (i.e., room temperature, atmospheric pressure... Autori: , Cornel Munteanu, Jozsef Kovacs, Mariana Scurtu, Monica Caldararu, Tatiana Yuzhakova ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25146
Quantification of lead pollution in bucharest area and potential risks for human health
Environmental Engineering and Management Journal › Vol. 6 › Nr. 5 AbstractLead is unique among the toxic air contaminants that the World Health Organization (WHO) has identified it in several ways. Lead concentration is increasing rapidly in the environment due to increased use in anthropic activity. Lead is released into the atmosphere from metallurgy and siderurgy industry, during coal burning, oil or wastes, from power plants which use solid fuel, from traffic and the building sites. Regardless the exposure mode, the presence of lead in urban air, even in r... Autori: Alina Murariu, Aurelia Meghea, Aurelian Stanescu, Ioana Lacatusu, Mihaela Mihai ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25205
Challenges for integrated water resources management in Romania
Environmental Engineering and Management Journal › Vol. 6 › Nr. 5 This study presents an overview of the current activities and results undertaken within the CEEX SIWMANET project dealing with an assessment of the actual challenges for Integrated Water Resources Management (IWRM) implementation in Romania,seen especially in relation with the R&D system and the need to develop especially the cooperation, training and participatory processes that are required for actual implementation in which the universities may play an important role in terms of catalyst ... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25150
Pilot plant treatment of water for drinking purpose by PAC
Environmental Engineering and Management Journal › Vol. 6 › Nr. 5 Experiments in a Pilot Plant (PP) are extremely important and relevant for the substantiation of research. This is the way to set up the most suitable coagulation-flocculation reagents, optimum operating conditions (injection point, reaction times, etc.),compatibility with the processes at the actual Water Works and real possibilities for further improvement.The present work aimed at verifying the previously obtained results in laboratory under PP working conditions for optimizing the coagulatio... Autori: Adina Pacala, Alina Anghelina, Dalila Marşavina, Ilie Vlaicu, Katalin Bodor, Mihaela Anghel ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25156
Equilibrium isotherms studies for sorption of lead ions from aqueous solutions using Romanian peat sorbent
Environmental Engineering and Management Journal › Vol. 6 › Nr. 5 In this work, the ability of Romanian peat for sorption of Pb (II) ions from aqueous solution has been determined using the batch experimental techniques. The sorption equilibrium has been studied at different pH values. The equilibrium adsorption level was determined to be dependent of the pH of solution and initial Pb(II) concentration.The equilibrium adsorption capacity of Romanian peat sorbent for lead has been described by seven types of mathematical model isotherms, namely: Freundlich, Lan... Autori: Brindusa Robu, Corneliu Cojocaru, Laura Bulgariu, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25160
Study of the non-catalytic and catalytic oxidative destruction of VOCs
Environmental Engineering and Management Journal › Vol. 6 › Nr. 5 In recent years, the release of volatile organic compounds (VOCs) has received much attention. Catalytic oxidation of VOCs, found in small concentration in industrial gas emissions constitutes an alternative for environmental pollution reduction.In this paper, a comparative study regarding the non-catalytic and catalytic oxidative destruction of non-halogenated or halogenated C6 hydrocarbons (C6H14, C6H12, C6H6, Cl-C6H5, Br-C6H5), is presented. Catalytic oxidation was studied in the presence of ... Autori: Florin Bandrabur, Heinz Koser, Ion Balasanian, Liliana Lazar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25162
Environmental Engineering and Management Journal, Vol. 1 Nr. 1
Environmental Engineering and Management Journal › Vol. 1 › Nr. 1 Contain all the articles from this issue Risk assessment and management - tools for sustainable developmentMaria GavrilescuSustainable alternatives for petrochemical wastewater managementCarmen Teodosiu, Lidy E. Fratila-ApachiteiThe role and the place of oxidant reagents in wastewater treatmentIoan RoscaEnvironmental Psychology, a new direction in the psychological fieldCarmen Catalina IoanChanging concepts of high performance to socially sustainable organizationCostache Rusu, Nerida DavisU... Autori: Abdelnaser Omran ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25166
Environmental Engineering and Management Journal, Vol. 1 Nr. 2
Environmental Engineering and Management Journal › Vol. 1 › Nr. 2 Contain all the articles from this issueICEEM /01 PLENARY CONFERENCETen years of Environmental Engineering and Management education and research at the Technical University of IasiMatei Macoveanu, Carmen Teodosiu ICEEM/01 - Environmental Engineering SectionRemoval of nitrogen oxides from Diesel exhaust: Laboratory studies for development of an SCR-catalyst-system using solid urea as reducing agentWerner Weisweiler High temperature desulphurization of hydrogen sulphide containing ... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25167
Environmental Engineering and Management Journal, Vol. 1 Nr. 3
Environmental Engineering and Management Journal › Vol. 1 › Nr. 3 Contain all the articles from this issueICEEM/01 -- Environmental Engineering SectionThermodynamic and kinetic study of gas desulphurization by adsorption on zeolites Ion Untea, Dan Brasoveanu, Madeleine Dancila, Szidonia Bocskor Mixed oxides derived from vanadium substituted layered double hydroxides as catalysts precursors for SO2 oxidationGabriela Carja, Ionel Popa, Gabriela Ciobanu, Nicolae Aelenei The impact of energy production on environment in RomaniaCarmen Zaharia, Mioara Sur... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25168
Environmental Engineering and Management Journal, Vol. 1 Nr. 4
Environmental Engineering and Management Journal › Vol. 1 › Nr. 4 Contain all the articles from this issue:ICEEM/01 -- Environmental Management Section Corporate environmental competence: A concept for characterising and assessing the environmental practice in companies and product chainsMichael S?¸gaard J?¸rgensen, Marianne Forman Life cycle assessment of some alternatives for the supply of thermal energy in the municipality of Iasi (Romania).Nicolae Peiu Management options for the industrial and municipal wastes in the city of Iasi Carmen Teod... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25169
Environmental Engineering and Management Journal, Vol. 2 Nr. 1
Environmental Engineering and Management Journal › Vol. 2 › Nr. 1 Contain all the articles from this issueEnvironmental analysis by capillary electrophoresis. Atmospheric samplesCamelia Draghici, Gheorghe Coman, Mihaela Sica,Dana Perniu, Mihaela Badea The ecological farms - A solution for sustainable agriculture. II. Position and perspectives of the ecofarms in the frame of the productive agricultural system Stela Axinte, Alina Stanciu, Lorica Axinte The extraction and clean up of organochlorine pesticides and PCB's from water using solid phase ex... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25170
Environmental Engineering and Management Journal, Vol. 2 Nr. 2
Environmental Engineering and Management Journal › Vol. 2 › Nr. 2 Contain all the articles from this issueEditorialEstablishing effluent discharge limits - have we got it right?Yusuf Chisti Full papersSurvey on the treatment of gaseous streams containing volatile organic compoundsOana Penciu, Maria GavrilescuEU environmental policy for industrial pollution control. IPPC DirectiveElena Bobu Environmental monitoring Antonius A.F. KettrupProcess The sonochemical degradationof cyanide ions using atmospheric oxygen as oxidizing agentIoan Iordache, Mircea Teodor Nec... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25171
Environmental Engineering and Management Journal, Vol. 2 Nr. 3
Environmental Engineering and Management Journal › Vol. 2 › Nr. 3 Plants as biomarkers, biosensors and biomonitorsModelling of wastewater treatment of a pulp and paper mill for monitoringCatalysts for heterogeneous photocatalysts. Part I. Possibilities to improve photoefficiency through catalysts modificationThe global assessment method of the water qualityAspects regarding the wood certification in RomaniaDecolorizing of pulping effluents by ammonium lignosulphonate oxidationPowder coatings-based organic filmsOn environmental effects of the pulp and paper mil... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25172
Environmental Engineering and Management Journal, Vol. 2 Nr. 4
Environmental Engineering and Management Journal › Vol. 2 › Nr. 4 Contain all the articles from this issueDestruction of Volatile Organic Compounds by catalytic oxidationAlice Oana Rusu, Emil DumitriuRisk assessment for a shipyard from Romanian Black Sea CoastAnca Florentina Caliman, Ion Balasanian Monitoring the behavior of the restoration interventions of the Probota Monastery’s indoor frescoes under the influence of the environmental factors. II. Modifications of the physical-structural and chemical characteristicsIon Sandu, Adrian Dima, Ioan Gabriel Sand... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25173
Environmental Engineering and Management Journal, Vol. 3 Nr. 2
Environmental Engineering and Management Journal › Vol. 3 › Nr. 2 Contain all the articles from this issueCatalysis for heterogeneous photocatalysis. Part II. Methods for synthesisAnca Florentina Caliman, Ion BalasanianpH influence on sonochemical degradation of cyanides with H2O2 and O2Ioan Iordache, Mircea Teodor Nechita, Nicolae Aelenei, Gabriela Apostolescu, Ioan Rosca Studies of various wastewater nitrification bioreactor types based on modelling and simulationDiana Lupasteanu, Florina Ungureanu, Maria Gavrilescu Wastewater from winemaking industry: monit... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25175
Environmental Engineering and Management Journal, Vol. 3 Nr. 4
Environmental Engineering and Management Journal › Vol. 3 › Nr. 4 Contain all the articles from this issueICEEM /02 PLENARY SESSION:"Environmental Engineering and Management in the Context of Sustainable Development"Design for sustainability (D4S): towards advanced product conceptsHan Brezet, Sacha SilvesterICEEM/02 - ENVIRONMENTAL ENGINEERING SECTION"Water and Wastewater Treatment Technologies"Complex approach to the problem of persistent organic pollutants degradation in water environmentVictor Covaliov, Olga Covaliova, Angela Cincilei, Gilles Mailhot, Pasca... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25176
Environmental Engineering and Management Journal, Vol. 4 Nr.1
Environmental Engineering and Management Journal › Vol. 4 › Nr. 1 Contain all the articles from this issueBiosorption of Cu2+ ions from aqueous solution by Enteromorpha sp.Loredana Brinza, Matthew Dring, Maria Gavrilescu Environmental impact assessment for steel processingBrindusa Robu, Carmen Zaharia, Matei MacoveanuEnhanced primary treatment of municipal wastewater by ion exchange and membrane processesDaniela Teleman, Peter A. Wilderer, Carmen Teodosiu, Thilo K?¶tzle Best practices in kraft pulping - benefits and costs Dan GavrilescuAspects of waste m... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25177
Environmental Engineering and Management Journal, Vol. 3 Nr. 3 (I)
Environmental Engineering and Management Journal › Vol. 3 › Nr. 3 Contain all the articles from this issueICEEM /02 PLENARY SESSION:"Environmental Engineering and Management in the Context of Sustainable Development"Green technology foresight of high technology: Hype of potentials - The challenges from nanotechnology, Biotechnology and ICTMichael S?¸gaard J?¸rgensenIntrinsic properties of noble metals in catalytic selective reduction of NO by propene in lean burn conditionsAnne Giroir-Fendler, Helleh Saadallah, Adela HaletaICEEM/02 - ENVIRONMENTAL ENGINEERING ... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25178
Environmental Engineering and Management Journal, Vol. 4 Nr. 2
Environmental Engineering and Management Journal › Vol. 4 › Nr. 2 Contain all the articles from this issueCatalysis for heterogeneous photocatalysis. Part II. Methods for synthesisAnca Florentina Caliman, Ion BalasanianpH influence on sonochemical degradation of cyanides with H2O2 and O2Ioan Iordache, Mircea Teodor Nechita, Nicolae Aelenei,Gabriela Apostolescu, Ioan RoscaStudies of various wastewater nitrification bioreactor types based on modelling and simulationDiana Lupasteanu, Florina Ungureanu, Maria Gavrilescu Wastewater from winemaking industry: monitor... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25179
Environmental Engineering and Management Journal, Vol. 4 Nr.3
Environmental Engineering and Management Journal › Vol. 4 › Nr. 3 Contain all the articles from this issueLignin in crop cultivations and bioremediationAlfred Abaecherli, Valentin I. PopaMaterials for intermediate-temperature solid oxide fuel cells and for proton exchange membrane fuel cellsAnnemarie Huijser, Joop SchoonmanAre interfacial biocatalysts important tools for nonpolluting technologies? 2. Immobilization of lipases and their representative applications Brindusa Dragoi, Emil DumitriuUASB treatment of fruit canning wastewater: pilot-scale invest... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25180
Environmental Engineering and Management Journal, Vol. 4 Nr.4
Environmental Engineering and Management Journal › Vol. 4 › Nr. 4 Contain all the articles from this issueNitrous oxide decomposition over Fe-ZSM-5 catalysts prepared by different methodsMircea Teodor Nechita, Ioan Rosca, Daniel Sutiman, Gabriela Apostolescu, Ioan Iordache Geometrical correlation method for global estimation of the ecosystem stateCamelia Popa, Cornel Cojocaru, Matei MacoveanuImmobilized lipases as biocatalysts for organic synthesis 1. Transesterification of ethyl acetate with alcohols in the presence of free Candida antarctica lipase BBrindusa... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25181
Environmental Engineering and Management Journal, Vol. 6 Nr. 3
Environmental Engineering and Management Journal › Vol. 6 › Nr. 3 Include urmatoarele articole:â€? Removal of persistent organic pollutants from textile wastewater by membrane processesâ€? Sustainability evaluation of an urban residential settlementâ€? Removal of zinc (II) from aqueous solutions by romanian sphagnum peat mossâ€? Development trends of cold plasma reactors in the global context of carbon emission reductionâ€? Assessing the potential of wind power in Romania within Kyoto targetsâ€? Research on the impact induced in the environment by milk process... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25198
Environmental Engineering and Management Journal, Vol. 6 Nr. 5
Environmental Engineering and Management Journal › Vol. 6 › Nr. 5 Include urmatoarele articole:â€? Keynote Lectures Energy from municipal solid waste: large-scale incineration or small-scale pyrolysis?â€? Electrical properties of SnO2-Pt/Al2O3 in reduction atmosphereâ€? Corporate management tools to address sustainability Challenges. A reflection on the progress and difficulties experienced during the last decadeâ€? Emerging academic responsibilities and opportunities for promoting regional sustainabilityâ€? Challenges for integrated water resources management... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25200
Environmental Engineering and Management Journal, Vol. 9 Nr. 1
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 ? Kinetics considerations concerning the oxidative degradation by photo-fenton process of some antibiotics
? Catalytic wet hydrogen peroxide oxidation of 4-chlorophenol over iron-exchanged clays
? Researches on the negative effects assessment (slugging, clogging, ash deposits) developed at the biomass-coal co-firing
? Contribution to the study of the environmental heritage of a former chemical plant
? Impact of chemicals on derivatives with important therapeutic activity in C... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25376
Environmental Engineering and Management Journal, Vol. 6 Nr. 6
Environmental Engineering and Management Journal › Vol. 6 › Nr. 6 Iinclude urmatoarele articole:â€? Phenol degradation in water through a heterogeneous photo-fenton processâ€? Study concerning the influence of oxidizing agents on heterogeneous photocatalytic degradation of persistent organic pollutantsâ€? Nonmarket valuation of acequias: Stakeholder analysisâ€? Metals concentration in soils adjacent to waste depositsâ€? Polyelectrolyte - surfactant complexesâ€? Modelling of sorption equilibrium of Cr(vi) on isomorphic substituted Mg/Zn-Al - type hydrotalcitesâ... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25206
Environmental Engineering and Management Journal, Vol. 7 Nr. 1
Environmental Engineering and Management Journal › Vol. 7 › Nr. 1 Include urmatoarele articole:â€? "Waste not, want not" a study of household attitude toward recycling of solid wastesâ€? A kinetic model for the crystal violet mineralization in water by the electro- fenton processâ€? Development of a coagulation/flocculation predictive model for turbidity removal from tehran water treatment plantsâ€? Removal of cadmium (II) from aqueous solutions by sphagnum moss peat: Equilibrium studyâ€? Environmental sustainability based on fuzzy modelsâ€? Impact of dust emi... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25207
Environmental Engineering and Management Journal, Vol. 7 Nr. 2
Environmental Engineering and Management Journal › Vol. 7 › Nr. 2 Include urmatoarele articole:â€? Synthesis of Ferrierite/ZSM-35 type zeolite with ethylenediamine as templateâ€? Recovery of p-hydroxybenzoic acid from wastewaters by reactive extraction 1. Extraction mechanism and influencing factorsâ€? Relationships between metals extent and cytological characteristics at Prunus persica L. pollenâ€? Smoke Emissions From Diesel Vehicles: A Case Studyâ€? Carbon dioxide generation - implications for romanian pulp and paper industry â€? Enhanced decolorization of ... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25208
Environmental Engineering and Management Journal, Vol. 7 Nr. 3
Environmental Engineering and Management Journal › Vol. 7 › Nr. 3 Include urmatoarele articole:â€? Cost sensitivity analysis by Monte Carlo simulationâ€? Mathematical modeling of gas drying by adsorptionâ€? Methyl isobutyl ketone combustion over Pt/Al2O3 catalystâ€? Distribution of oxygen transfer rate in stirred bioreactors with simulated brothsâ€? Unsteady heat transfer inside an elliptic cylinderâ€? Triphasic external-loop airlift reactors. Hydrodynamic and dispersion studiesâ€? Sustainable combined utilization of renewable forest resources and coal in Roma... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25209
Phenol degradation in water through a heterogeneous photo-fenton process
Environmental Engineering and Management Journal › Vol. 6 › Nr. 6 AbstractA new photo-Fenton catalyst has been manufactured from synthetic layered clay laponite (Laponite RD) by the pillaring technique Eight different catalyst samples were prepared: four without thermal aging (WTA) calcined at 523 0K, 623 0K, 723 0K and 8230 K, and other four with thermal aging (TA) calcined at the same temperatures. The activity of the TA- 623 sample was evaluated in the phenol degradation by the photo - Fenton process. The influence of five important operating factors has be... Autori: Beatrice Iurascu, Ilie Siminiceanu, Miguel Vincente ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25210
Study concerning the influence of oxidizing agents on heterogeneous photocatalytic degradation of persistent organic pollutants
Environmental Engineering and Management Journal › Vol. 6 › Nr. 6 AbstractIn this paper, the application of the heterogeneous photocatalysis in degradation of a cationic copper phtalocyanine dye, used as model of persistent organic compound is investigated by assessing the efficiency of the process. The influence of hydrogen peroxide on the photocatalytic process is studied using two types of commercial catalysts, such as TiO2 Degussa (88% anatase, 20% rutile) and TiONa Millennium (100% anatase). Another electron acceptor, FeCl3 is also used for investigation ... Autori: Anca Florentina Caliman, , , Ioannis Poulios, Maria Gavrilescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25211
Nonmarket valuation of acequias: Stakeholder analysis
Environmental Engineering and Management Journal › Vol. 6 › Nr. 6 AbstractFrom a traditional market economy perspective, the productivity attained when water and land is used for acequias is much lower than the productivity achieved when applying these same resources to urban and industrial uses. An analysis of key stakeholders has indicated that there are cultural and environmental attributes of acequia agriculture landscapes that are not captured in the market-assigned value of acequias. This analysis revealed the motivations behind the value placed on acequ... Autori: Joseph Ulibarri, Steven Archambault ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25212
Polyelectrolyte - surfactant complexes
Environmental Engineering and Management Journal › Vol. 6 › Nr. 6 AbstractThe formation of the polyelectrolyte- surfactant complexes has been studied. On this purpose has been measured the critical micelle concentration for every polyelectrolyte and surfactant which had been used. The phase behaviour of mixtures of a cationic polyelectrolyte (Praestol 611) and an anionic surfactant (sodium lauryl sulphate - SLS) has been studied. For a given polyelectrolyte concentration, with increasing surfactant concentration, three phase regions were identified. The first ... Autori: Cristina Costache, Gabriel Dabija, Mihaela Mihai ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25214
Modelling of sorption equilibrium of Cr(vi) on isomorphic substituted Mg/Zn-Al - type hydrotalcites
Environmental Engineering and Management Journal › Vol. 6 › Nr. 6 AbstractThis paper dealt with Cr(VI) sorption on isomorphic substituted Mg/Zn-Al - type hydrotalcites under proper working conditions. The prepared samples were named Mg3Al, Mg2ZnAl, Mg1.5Zn1.5Al, MgZn2Al and Zn3Al. The experimental data concerning sorption isotherms were modelled in accordance with four equilibrium equations: Langmuir (L), Freundlich (F), Langmuir-Freundlich (L-F) and Redlich-Peterson (R-P) by using two ways: (i) estimation of qmax, K and n; and (ii) estimation of K and n, for ... Autori: Aurel Iovi, Eveline Popovici, Laura Cocheci, Rodica Pode ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25215
Environmental pollution with VOCs and possibilities for emission treatment
Environmental Engineering and Management Journal › Vol. 6 › Nr. 6 AbstractVolatile organic compounds (VOCs) constitutes an important class of environmental pollutants, which, together with other contaminants as NOx, SOx, CO, NH3, CO2 etc. participate in degradation of atmosphere and exhibit a potential risk for human health. VOC emissions may be generated in more than 25 percentages through the use of solvents in different industrial or house holding activities. For applying a certain plan concerning the pollution reduction, any user of organic solvents contai... Autori: Florin Bandrabur, Ion Balasanian, Liliana Lazar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25218
Synthesis, characterization and catalytic reduction of NOx emissions over LaMnO3 Perovskite
Environmental Engineering and Management Journal › Vol. 6 › Nr. 6 AbstractThe perovskite structure was synthesized by sol-gel method type citrate. Three perovskite LaMnO3 samples were obtained after calcination and were characterized by XRD, XPS and TPR. The catalytic testing was carried out in SCR-HC equipment (HC=C3H6 and C3H6 respectively) in presence and also in absence of oxygen atmosphere. The results pointed out a good activity in NOx reduction but only in oxygen absence. As it was expecting, LaMnO3 perovskite has shown a good activity for hydrocarbons ... Autori: Helmut Papp, Ion Balasanian, Liliana-Mihaela Chirilă, Wladimir Suprun ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25222
Urban traffic pollution reduction using an intelligent video semaphoring system
Environmental Engineering and Management Journal › Vol. 6 › Nr. 6 AbstractThe present paper suggests making an intelligent video system of command over crossroads with traffic lights, its main goal being diminishing road congestion, a better traffic speed of vehicles, diminishing the environment pollution and improvement of negative effects that vehicle concentration has over the physical and psychological state of the population.... Autori: Codrin Donciu, Marinel Temneanu, ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25224
Methods and procedures for environmental risk assessment
Environmental Engineering and Management Journal › Vol. 6 › Nr. 6 AbstractThis work presents the state of the art of qualitative and quantitative risk assessment methodologies in a variety of fields. Because risk exists in all ranges of human activity, both private and professional, risk assessment is an attempt to analyze precipitating causes of risk in order to more efficiently reduce its probability and effects. Numerous methodological guidelines within the field of environmental science exist to provide guidance for a risk assessment program, although the ... Autori: , , Florentina Anca Căliman, Maria Gavrilescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25226
Comparative study of some essential elements in different types of vegetables and fruits
Environmental Engineering and Management Journal › Vol. 6 › Nr. 6 AbstractSome industry activities in the area of Constanta (Romania) contribute to the polluting of the environment with heavy metals. In order to estimate the pollution level and the danger created by this phenomenon, some analyses are required with regard to determining the concentration of the pollutant metals in plants samples. The investigated metals were determined by flame atomic absorbtion spectrometry in different types of vegetables and fruits, after the chemical mineralization of the s... Autori: Alina Soceanu, , Simona Dobrinas, Vasile Magearu, Viorica Popescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25227
A kinetic model for the crystal violet mineralization in water by the electro- fenton process
Environmental Engineering and Management Journal › Vol. 7 › Nr. 1 AbstractThe mineralization of acidic aqueous solutions with 0.166 to 1.333 mM Crystal Violet (CV) in 50 mM Na2SO4 as background electrolyte has been studied by the electro- Fenton method, where the oxidizing hydroxyl radicals were produced from the Fenton reaction between added ferrous ions and hydrogen peroxide generated at a oxygen- diffusion cathode. The influence of a new operating factor on the mineralization degree has been investigated: anode material (platinum versus boron doped diamond)... Autori: Carmen-Ionela Alexandru, Eric Brillas, Ilie Siminiceanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25229
Development of a coagulation/flocculation predictive model for turbidity removal from tehran water treatment plants
Environmental Engineering and Management Journal › Vol. 7 › Nr. 1 AbstractAluminum and ferric salts are widely used as coagulants in water and wastewater treatment. They are effective in removing a broad range of impurities from water, including colloidal particles and dissolved organic substances. As well as traditional additives, such as aluminum sulphate ("alum") and ferric chloride, other products containing prehydrolized metal ions such as polyaluminum chlorides are now commonly used. The aim of this study was to develop a model for coagulation/flocculati... Autori: Avid Banihashemi, Manouchehr Nikazar, , Reza Maknoon ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25230
Removal of cadmium (II) from aqueous solutions by sphagnum moss peat: Equilibrium study
Environmental Engineering and Management Journal › Vol. 7 › Nr. 1 AbstractCadmium is listed by US-EPA as one of priority pollutant and as a known carcinogen, and therefore its removal from wastewaters of various industrial processes is a very important environmental problem. The paper analyzes the effectiveness of a Romanian sphagnum moss peat as available and cheaper sorbent in removal of Cd (II) from aqueous solutions. Batch sorption experiments were carried out in order to establish the influence of solution pH, peat dose, contact time and initial cadmium c... Autori: Catalin Balan, , Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25231
Mineralization of two phenyl urea herbicides in water by a heterogeneous photo-Fenton process
Environmental Engineering and Management Journal › Vol. 7 › Nr. 1 AbstractThe paper presents new experimental results on the photodegradation of two important phenyl urea herbicides in water: Monuron and Isoproturon. The photodegradation was performed by two Advanced Oxidation Processes (AOPs): the homogeneous photo- Fenton process (, UV-H2O2 - Fe3+) and a heterogeneous photo - Fenton reaction using an iron pillared Laponide- RD catalyst (Fe-Lap-RD). The Fe-Lap-RD catalyst was prepared from iron nitrate 0.2 M solution and a suspension of Laponite - RD clay. Th... Autori: Elsa Lundanes, Ilie Siminiceanu, Maria-Magdalena Bobu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25234
Ecological management for textile wastes processing
Environmental Engineering and Management Journal › Vol. 7 › Nr. 1 AbstractThe zero waste is a policy, a way, an aim and represents a new approach planned for the 21st century, which includes the resource preservation principles, pollution reducing, increasing of the opportunities to create new jobs and providing the highest degree of economic stability.The strategy of developing the Romanian textile industry sub-sectors envisages the achieving of certain superior production indices, from a physical and value point of view, in 2010, a quantitative increase of t... Autori: Eftalea Carpus, Emilia Visileanu, Razvan Scarlat ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25236
Polycyclic aromatic hydrocarbons and organochlorine pesticides contents in tap and surface waters
Environmental Engineering and Management Journal › Vol. 7 › Nr. 1 AbstractPolycyclic aromatic hydrocarbons (PAHs) and organochlorine pesticides (OCPs) contamination levels were determined in the water samples of Danube river (two sites in Romanian area), of one Romanian spring water (Pelisor), in tap water (from Constantza and from Borovetz) and sea water (the Black Sea and the Mediteranean Sea). These levels were compared to those available for other surface waters. The studied water samples were analyzed by gas chromatography with mass spectrometer detector ... Autori: Alina Soceanu, , Simona Dobrinas, Valentina Coatu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25237
Polyelectrolyte - surfactant complexes used in the coagulation floculation processes
Environmental Engineering and Management Journal › Vol. 7 › Nr. 1 AbstractThe removal of formasine fines particles from water by precipitation with polyelectrolyte and surfactant complex of Polyacrylamide (industrial product Praestol 611 made by Degussa) and Sodium Lauryl Sulphate (SLS) was experimentally studied. Calcium oxide was added to initiate precipitation of the polyelectrolyte complex together with the fines particles. The experiments were carried out with complexes having the surfactants concentration higher then the critical aggregation concentratio... Autori: Cristina Costache, Gabriel Dabija, Mihaela Mihai ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25238
Assessment of water pollution potential by acide drainage
Environmental Engineering and Management Journal › Vol. 7 › Nr. 1 AbstractAn assessment of acide drainage forming potential for a mining waste material resulted in a former mine of nonferrous and precious metals ore has been made. The waste material has the following contents: 2,20?·2,28% sulphide sulphur, 2,53?·2,58% Fe, 0,07% Cu, 0,05% Zn, 0,36?·0,40% Pb, 0,008?·0,013% Ca and 3,85?·7,97% sulphate. Bacterial leaching tests in percolating columns during 380 days have been made. The leaching liquor has been recirculated at a liquid:solid ratio of 1L:1kg. After ... Autori: Vasile Oros ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25239
Surfactant - modified natural zeolites for environmental applications in water purification
Environmental Engineering and Management Journal › Vol. 7 › Nr. 2 AbstractThis paper presents an overview of research related to use of surfactant modified natural zeolites (SMZ) in water and wastewater treatment. The most common natural zeolite, widely used as starting material is clinoptilolite, but other natural zeolites have also been used (chabasite, heulandite, mordenite). In the first part, the preparation methods and the influence of process parameters on the final product properties is reviewed. The discussion is focused on the influence of surfactant... Autori: , Cezar Catrinescu, Roxana Elena Apreutesei ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25241
Pulsed plasma treatment of surface water using lowtemperature corona reactor
Environmental Engineering and Management Journal › Vol. 7 › Nr. 2 AbstractThe disinfection of water containing microorganisms by exposure to pulsed-discharge plasma using a low-temperature gas-liquid hybrid discharge (HD) reactor was studied.The HD reactor consists of a plexiglas cylinder containing the liquid of high voltage electrode above liquid' s surface and grounded electrode submerged in the liquid. The HD could produce both arc discharges in gas and liquid phases. The high-energy plasma arc produces a pressure shock wave, which kills the targeted micro... Autori: Gamal M. El-Aragi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25242
Enhanced decolorization of reactive blue 19 dye from synthetic textile wastewater through uv photolysis in alkaline conditions
Environmental Engineering and Management Journal › Vol. 7 › Nr. 2 AbstractLaboratory scale experiments were conducted in order to investigate the photolysis of Reactive Blue 19 (RB 19) dye using UV as the irradiation source in alkaline solution. The effects of operating parameters such as, pH, initial dye concentration, UV dosage, hydrogen peroxide and oxygen have been evaluated. The results indicate that the UV photolysis process in alkaline solution is ideal for decolorizing of RB 19 and it can be taken as a starting step to establish the economical feasibil... Autori: Abbas Rezaee, Ebrahim Hajizadeh, Gholamreza Mosavi, Mohamadtaghi Ghaneian, Seyyed Jamalodin Hashemian ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25245
Studies on air pollution with air-floated powders and lead in Tg. Jiu city, Gorj County
Environmental Engineering and Management Journal › Vol. 7 › Nr. 2 AbstractThe health effects caused by air pollutants may range from slight biochemical and physiological changes to difficulty breathing, wheezing, coughing and aggravation of existing respiratory and cardiac conditions. This paper presents an experimental study of air quality in the city of Tg. Jiu, Gorj County, by evaluating the air-floated powders of the PM10 fraction and lead from air. The analysis was performed by measurements in sampling points using the method presented in the European Nor... Autori: Camelia Capatana, Claudia Maria Simonescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25247
Smoke Emissions From Diesel Vehicles: A Case Study
Environmental Engineering and Management Journal › Vol. 7 › Nr. 2 AbstractWith a greater emphasis on the increasing number of diesel vehicles provided with pollution control systems complying to regulatory standards these days than ever before, it is also necessary to look into the emission characteristics of the diesel vehicles with respect to vehicle-related parameters with a view to ascertain as to how the tail pipe emission from the diesel vehicles could be kept under control by adopting suitable strategies. Considering the constraints of data collection a... Autori: Manoranjan Parida, Mishra Rajeev Kumar, Pandey Govind ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25248
Recovery of p-hydroxybenzoic acid from wastewaters by reactive extraction 1. Extraction mechanism and influencing factors
Environmental Engineering and Management Journal › Vol. 7 › Nr. 2 AbstractThe comparative study on reactive extraction of p-hydroxybenzoic acid with Amberlite LA-2 and D2EHPA in two solvents with different polarity (n-heptane and dichloromethane) indicated that the extractant type and solvent polarity control the extraction mechanism. Thus, the reactive extraction with Amberlite LA-2 occurs by means of the interfacial formation of an aminic adduct with three extractant molecules in low-polar solvent, or of an salt with one extractant molecule in higher polar s... Autori: Anca-Irina Galaction, Dan Caşcaval, Maria Cămăruţ ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25250
Synthesis of Ferrierite/ZSM-35 type zeolite with ethylenediamine as template
Environmental Engineering and Management Journal › Vol. 7 › Nr. 2 AbstractThe crystallization of ferrierite/ZSM-35 zeolite at 180 ± 50C in the presence of ethylenediamine as a structure-directing agent from reaction mixtures containing various active NaOH/SiO2 ratios has been studied. X-ray diffraction, scanning electron microscopy, TG/DTG/DSC analysis, nitrogen sorption measurements and temperature-programmed ammonia desorption were used to characterize the ferrierite/ZSM-35 solids. The XRD data reveal that the samples synthesized in optimized conditions are... Autori: Ioana Droahna, Iuliean Asaftei, Nicolae Bilba ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25251
Smart soluble grafted polysiloxanes with potential applications in waterborne paints
Environmental Engineering and Management Journal › Vol. 7 › Nr. 3 AbstractThe synthesis of some grafted polysiloxane and azo-polysiloxanes with potential applications as rheology modifiers or surfactants for waterborne paints is reported. Nowadays it became very important to design environmentally friendly systems exhibiting the best end-uses properties. Due to their complex architecture and their sensitivity to UV radiation the studied polymeric systems exhibit very interesting rheological properties. All the polymers containing the azobenzenic groups in the ... Autori: Constanta Ibanescu, Ioana Moleavin, Iulian Nor, Nicolae Hurduc, Viorel Sandu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25252
Analytical approach to estimate the air flow rate in the boundary layer of a heated furnace wall
Environmental Engineering and Management Journal › Vol. 7 › Nr. 3 AbstractThe critical analysis of the transfer processes intensification techniques is carried out by identification of the methods that can be applied, regardless of the process nature. The main priority is the development of a consistent methodology that will represent the basis of specific practical methods development by establishing a theoretical frame for studying the heat transfer processes. The main purpose is to reduce the stationary time of the charge in the installation, accomplishing ... Autori: Adrian Dima, Alina Adriana Minea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25253
Statistical study on the distribution ratio oF U(VI) and U(IV) species in several romanian uranium ores
Environmental Engineering and Management Journal › Vol. 7 › Nr. 3 AbstractThis paper deals with a statistical treatment applied to the determination of U(VI)/U(IV) ratio in some uranium ores, depending on the pH and humidity samples taken out directly from a uranium mine. The concentrations of different uranium species were determined spectrofotometrically. Some statistical parameters were calculated for a subsequent statistical interpretation of the experimental data.... Autori: Alexandru Cecal, Gabriel Barbir, Marian E. Răileanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25255
Sorption of cationic dyes from aqueous solution onto natural clay. Equilibrium and kinetic study
Environmental Engineering and Management Journal › Vol. 7 › Nr. 3 AbstractEquilibrium and kinetic studies regarding the sorption of the copper phtalocyanine dye Alcian Blue 8 GX were carried-out within batch experiments. The sorption equilibrium revealed that the pure natural clay can uptake up to 18 mg of Alcian Blue 8 GX per 1 g mass of clay. The cationic dye sorption was best fitted by Freundlich model that is applicable to sorption on heterogeneous surfaces (surfaces with non-equivalent energetic sites). The pseudo-second order kinetic model may be efficie... Autori: , Maria Gavrilescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25257
Utilization of coal fly ash from power plants I. Ash characterization
Environmental Engineering and Management Journal › Vol. 7 › Nr. 3 AbstractA comprehensive characterization of fly ash from Iasi, Romania has been carried out in order to set up the utilization potential of fly ash resulting in appreciable amounts from thermal power plants as a waste, which leads to soil and groundwater contamination, as well as atmospheric pollution. This fly ash can be classified on the base chemical and technological properties in F class. Having in mind the assignment of the processing conditions, the fly ash can be used as sorbent for poll... Autori: , Maria Harja, Marinela Bărbuţă, Nicolae Apostolescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25259
Distribution and migration of chrome in urban soils - Case study: IaÂ?i city (Industrial zone)
Environmental Engineering and Management Journal › Vol. 7 › Nr. 2 AbstractIn this study, we follow the chrome distribution and his association forms with mineral and organic components, from 14 soilsamples from industrial zone of IaÂ?i city.The total chrome concentration in studied soil samples varied between 11.73-129.35 μg/g, being lower than the normal values only for four samples. The Cr(VI) weight of total chrome content varied between 3.78-14.52 %. For none of studied soil samples the chrome content is not over to value of alert concentration. The q... Autori: Constantin Rusu, Doru Juravle, Dumitru Bulgariu, Laura Bulgariu, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25260
Synthesis of highly ordered titanium-containing SBA-15 mesoporous silicas for catalytic eco-friendly oxidations
Environmental Engineering and Management Journal › Vol. 7 › Nr. 3 AbstractMesoporous Ti-SBA-15 materials have been synthesized up to a Si/Ti ratio of 20 using a two-step pH adjusting method. Low angle X-ray diffraction and diffuse reflectance UV-Vis spectroscopy revealed that the optimal pH value to synthesize highly ordered mesoporous solids having Ti atoms primarily in tetrahedral coordination environments is around 7.5. The nitrogen physisorption and TEM indicated also ordered mesostructures having relatively large surface areas and uniform mesopore size di... Autori: Adrian Ungureanu, Alexandru Chirieac, Brindusa Dragoi, Cezar Catrinescu, Emil Dumitriu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25263
Effective mass transfer area determining of a mellapak 750 Y structured packing
Environmental Engineering and Management Journal › Vol. 7 › Nr. 3 AbstractThe effective mass transfer area of a Mellapak 750 Y structured packing was measured in a bench-scale plant with a column having an internal diameter of 100mm, and a packing height of 518 mm, using a broad range of gas and liquid flow rates. The absorption of carbon dioxide into natrium hydroxide aqueous solutions of 0.5 and 1.0 mol/L has been employed as test reaction. The validity of data obtained was tested by checking the two conditions of fast pseudo first order irreversible reactio... Autori: Anton Friedl, Ilie Siminiceanu, Michael Harasek, Mihaela Dragan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25264
Study on new complex compounds of Ti(IV) and Zr(IV) in aqueous solutions: synthesis, stability and application in cleaner technologies of natural leather
Environmental Engineering and Management Journal › Vol. 7 › Nr. 3 AbstractIn this paper, the study of synthesis and stability in aqueous solutions of new coordination compounds of Ti(IV) and Zr(IV) with ligand N-hydroxy-succinimide is presented. The salts: TiOSO4·2H2O and ZrOCl2·8H2O used for obtaining the studied coordination complexes, can derive from recycling metallic residues resulted in mechanical technologies applied for titanium and zirconium in S.C. ZIROM S.A. Giurgiu.The new complexes were synthesized in aqueous solutions and stability were study u... Autori: Adrian Cailean, Daniel Sutiman, Doina Sibiescu, Gabriela Apostolescu, Ioan Roşca, Marian Crudu, Mihaela Vizitiu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25265
Sustainable combined utilization of renewable forest resources and coal in Romania
Environmental Engineering and Management Journal › Vol. 7 › Nr. 3 AbstractAs answer to European Community politics, in Romania the researches for waste reworking and ecological treatment are developing. The researches are focusing on wood wastes for its recovery in energy purposes. The purpose is the enlargement of superior coal utilization area obtained from Jiu Valley coal field, for increasing the efficiency of heating installations for domestic consumption, concordantly to European and Romanian pollutions regulations.Combined utilization of the fuel compos... Autori: Camelia Bădulescu, Eugen Traistă, Gheorghe Lăzăroiu, Maria Orban, Valeriu Plesea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25267
Triphasic external-loop airlift reactors. Hydrodynamic and dispersion studies
Environmental Engineering and Management Journal › Vol. 7 › Nr. 3 AbstractConsidering that three-phase dispersions are common in chemical engineering and biotechnology, and with increasing airlift reactor applications to chemical and biotechnological processes, a experimental study was undertaken in order to investigate the liquid phase hydrodynamics and dispersion in an external-loop airlift reactor on laboratory scale. Experiments were conducted in order to find a relationship between relevant hydrodynamic and mixing parameters of a solidsuspended exter... Autori: Florina Ungureanu, Maria Gavrilescu, Radu Z. Tudose ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25268
Unsteady heat transfer inside an elliptic cylinder
Environmental Engineering and Management Journal › Vol. 7 › Nr. 3 AbstractConsidering the importance of transfer phenomena in chemical engineering and environmental protection, in particular heat transfer modelling, numerical methods are applied to investigate the transient heat transfer inside an elliptic cylinder. The temperature of the surrounding medium was considered constant and equal to the temperature on the surface of the cylinder. The heat balance equation was solved numerically in elliptic coordinate system. The computations were focused on the infl... Autori: Gheorghe Juncu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25269
Distribution of oxygen transfer rate in stirred bioreactors with simulated broths
Environmental Engineering and Management Journal › Vol. 7 › Nr. 3 AbstractThe study on distribution of oxygen transfer rate for a stirred bioreactor and simulated broths was carried out for four positions inside the broth and indicated the significant variation of kla on the bioreactor height. For all considered positions, kla initially increased to a maximum value with mixing intensification, decreasing then, as the result of the modification of mixing mechanism in presence of air bubbles. The increase of broth viscosity led to the significantly reducing of o... Autori: Adina Segneanu, Anca-Irina Galaction, Dan Caşcaval, Radu Z. Tudose ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25270
Mathematical modeling of gas drying by adsorption
Environmental Engineering and Management Journal › Vol. 7 › Nr. 3 AbstractTheoretical and experimental studies of gas drying processes by adsorption in fixed bed of grains are presented in this paper. Based on an extensive literature study, some of the most representative mathematical models describing gas adsorption in fixed bed and consequently gas drying processes by adsorption in fixed bed are also presented. Using a mathematical model from those mentioned describing adsorption under isotherm regime, the temperature and gas flow velocity effects over the d... Autori: Marius Sebastian Secula, Stelian Petrescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25272
Municipal solid waste management in developing countries: A perspective on Vietnam
Environmental Engineering and Management Journal › Vol. 7 › Nr. 4 AbstractEnvironmental pollution has posed and continues to cause specific to and complicated problems. The unsustainable production and consumption patterns result in waste that can harm health and the environment. Because of rapid population growth and urbanization, industrialization process and rural to urban migration, solid waste management is becoming more and more critical now, being a problem in rapidly growing urban centers in developing countries. All these threaten the health and well-... Autori: Abdelnaser Omran, Maria Gavrilescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25275
Sustainable development and environmental assessment in the Bor basin
Environmental Engineering and Management Journal › Vol. 7 › Nr. 4 AbstractIn Serbia, the more recent sustainable development policy faces a number of serious problems, which are emphasized by the slow pace at which post-socialist r,eforms have been performed. Environmental aspects of transition reforms have hardly been tackled so far, the copper complex in the area of Bor (Eastern Serbia) being a notable example of such a delay. In effect, the practice of a more rigorous and systematic ex ante evaluation of possible future development scenarios is at its very ... Autori: Miodrag Vujosevic, ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25282
Global dimming - An environmental hypothesis on climate change
Environmental Engineering and Management Journal › Vol. 7 › Nr. 4 AbstractThe paper approaches studies of projections of future climate change that use a hierarchy of coupled ocean/atmosphere/seaice/ land-surface models to provide indicators of global response as well as possible regional patterns of climate change. It is evidenced that, after the global warming, a new phenomenon that occurs in the terrestrial atmosphere has drawn the attention of the scientific community. It is called global dimming - the decrease of the solar beams capacity (infrared, visibl... Autori: Catrinel-Raluca Giurma-Handley, Constantin-Marin Antohi, Ioan Crăciun, Ion Giurma ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25285
Study of the separation process of tartaric acid by ion-exchange with solid anionites Amberlite IRA-67 AND Amberlite IRA-410
Environmental Engineering and Management Journal › Vol. 7 › Nr. 4 AbstractThe present work describes an investigation of process of ion-exchange separation of tartaric acid in model systems. These investigations will be used for the separation of tartaric acid from secondary wine products. Their valorisation allows obtaining valuable compounds, as well as decreasing the huge quantities of wastes accumulated at wine making factories.As ionic exchangers, there have been used weakly basic anion exchanger Amberlite IRA-67 (tertiary functional amine groups) and str... Autori: Aliona Mereuţa, Gheorghe Duca, Herbert G. Boechzelt, Natalia Marchitan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25286
Environmental Engineering and Management Journal, Vol. 9 Nr. 3
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 ? Denitrifying activity of activated sludge in suspension and in biofilm? Denitrifying potential of an activated sludge derived consortium? Biosorption of hexavalent chromium based on modified Y zeolites obtained by alkali-treatment? Identifying anaerobic digestion models using simultaneous batch experiments? Olive mill wastewater as a renewable resource? Influence of innoculum acclimation in the biodegradation rate and estimated biodegradbility of cow manure, food waste and oil? Studies on the ... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25378
Separation of uranium(vi) from soils by extraction in aqueous PEG (1550) - Na2SO4 - Na2CO3 two-phase systems. I. Preliminary results
Environmental Engineering and Management Journal › Vol. 7 › Nr. 4 Abstract In this paper preliminary results of studies concerning the extraction of uranium(VI) from soils in aqueous PEG (1550) 20 % - Na2SO4 20 % - Na2CO3 10-2-10-3 M two-phase systems are presented, as well as the spectrophotometric determination of extracted uranium with pirocatechol violet (PV). A special attention was given to the experimental factors (pH, redox potential, CO32- anion concentration and initial uranium concentration), which was found to influence both the formation and stabi... Autori: Daniel Condorachi, Doru Juravle, Dumitru Bulgariu, Laura Bulgariu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25290
Remediation techniques for contaminated soils
Environmental Engineering and Management Journal › Vol. 7 › Nr. 4 AbstractSoil pollution causes significant damage to the environment and human health as a result of their mobilities and solubilities.Significant progress has been made in regulating soil pollution, with a parallel development of methodologies for soil assessmentand remediation. The selection of the most appropriate soil and sediment remediation method depend on site characteristics, concentration, type of pollutants to be removed, and the end use of the contaminated medium. The approach include... Autori: Attar Singh Sheoran, Poonia Poonam, Vimla Sheoran ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25291
Advanced Cd2+ removal on dispersed TioO2-fly ash
Environmental Engineering and Management Journal › Vol. 7 › Nr. 4 AbstractThe paper proposes a suitable solution for a one step treatment process of the wastewaters resulted from the textile industry, using a mixture of anatase and modified fly ash. The dyes photo-degradation on TiO2 anatase is well known. The use of fly ash in advanced wastewater treatment, for heavy metal adsorption, represents an environmental friendly process, efficient if the fly ash surface charge is controlled by solubilisation/reprecipitation. The first step in implementing the single ... Autori: Anca Duta, Maria Visa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25292
Biological phosphorus removal in a high performance single reactor
Environmental Engineering and Management Journal › Vol. 7 › Nr. 4 AbstractThe possibility of biological phosphorus removal (BPR) was studied using a lab-scale single reactor the same as SHARON process. Up to now, there has been no investigation of the feasibility of SHARON process for the purpose of phosphate removal. The optimal operation conditions were established to obtain highest removal rates. Under the experimental conditions, the phosphorus concentration dropped from an influent concentration of 1000 mg/L to levels around 0.1 mg/L or less. It was concl... Autori: Abbas Rezaee, Hatam Godini, Masod Solimani, Nayera Nami ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25293
Removal of nickel from aqueous solution by Nordmann FIR (ABIES Nordmanniana (STEV.) SPACH SUBSP. Nordmanniana) cones
Environmental Engineering and Management Journal › Vol. 7 › Nr. 4 AbstractBiosorption an alternative process is the uptake of heavy metals from aqueous solutions by biological materials. The biosorption of nickel ions from aqueous solution was investigated by Nordmann fir (Abies nordmanniana (Stev.) Spach. subsp. nordmanniana) in a batch adsorption system as a function of pH, initial metal concentration, biomass dosage, contact time. The data showed that the maximum pH for efficient sorption of Ni(II) was 6.5. At the optimal conditions, Ni(II) ion biosorption ... Autori: Handan Ucun, Ozkan Aksakal, Yusuf Kaya ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25295
Environmental Engineering and Management Journal, Vol. 7 Nr. 4
Environmental Engineering and Management Journal › Vol. 7 › Nr. 4 Include urmatoarele articole:â€? Removal of nickel from aqueous solution by Nordmann FIR (ABIES Nordmanniana (STEV.) SPACH SUBSP. Nordmanniana) conesâ€? Determination of heavy metals in extracts and macerates from garden flowersâ€? Biological phosphorus removal in a high performance single reactor â€? Advanced Cd2+ removal on dispersed TioO2-fly ash â€? Remediation techniques for contaminated soilsâ€? Separation of uranium(vi) from soils by extraction in aqueous PEG (1550) - Na2SO4 - Na2CO3 two-... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25296
Opportunities and barriers for development of biogas technologies in Romania
Environmental Engineering and Management Journal › Vol. 7 › Nr. 5 AbstractThe development of technologies for waste treatment, simultaneously with minimizing greenhouse gas emissions, has become a matter of great concern at global level. Biogas systems can help in the fight against global warming by avoiding to escape methane from organic waste, into the atmosphere. Biogas technology is of great benefit to the end-users and the environment by energy, compost and nutrient recovery. Romania is a country with a huge biomass potential. Implementing of biogas techn... Autori: , Corina Alice Babutanu, Gheorghe Băran ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25300
Valorification of herbs in phytotherapy - an alternative of chemical treatments in agriculture
Environmental Engineering and Management Journal › Vol. 7 › Nr. 5 AbstractIn agricultural culture there are numerous weeds diminishing the production which are controlled by several methods. The most common and efficient method with the modern agriculture is the chemical method of controlling weeds, using a large range of herbicides. A great part of these herbicides have long lasting remanence, even over three years. A great part of the active substances of the herbicides pollute the soil and subsequently the waters, sometimes with disastrous action for the en... Autori: Brindusa Robu, Sabina Robu, Teodor Robu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25303
Phytoremediation: the application of vermicompost to remove zinc, cadmium, copper, nickel and lead by sunflower plant
Environmental Engineering and Management Journal › Vol. 7 › Nr. 5 AbstractA greenhouse experiment was conducted to determine the phytotoxic effect of heavy metals such as Cd, Cu, Ni, Pb and Zn on the growth of Sunflower (Helianthus annuus): on the seed germination, root/shoot growth and uptake of metals in soil-vermicompost media. The selected metals were dosed at various concentrations ranging from 0, 5, 10, 20, 40 and 50 ppm separately in soil - vermicompost media (3:1) in pot experiment. The seed germination, root and shoot growth were found significantly a... Autori: Chhotu D. Jadia, Madhusudan H. Fulekar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25306
Wood-based epoxy resins and the ramie fiber reinforced composites
Environmental Engineering and Management Journal › Vol. 7 › Nr. 5 AbstractWood-based epoxy resin was synthesized from resorcinol-liquefied wood. First, wood components were depolymerized and liquefied by reaction with resorcinol. The resorcinol-liquefied wood with plenty of hydroxyl groups could be considered as a precursor for synthesizing wood-based epoxy resin. Namely, the phenolic-OH groups of the liquefied wood reacted with epichlorohydrine under alkali condition. By the glycidyl etherification, epoxy functionality was introduced to the liquefied wood. Th... Autori: Akira Fujita, Hajime Kishi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25310
Environmental Engineering and Management Journal, Vol. 7 Nr. 5
Environmental Engineering and Management Journal › Vol. 7 › Nr. 5 Include urmatoarele articole:â€? Biomass - A source of chemicals and energy for sustainable development â€? Equilibrium study of Pb(II) and Hg(II) sorption from aqueous solutions by moss peatâ€? Wood-based epoxy resins and the ramie fiber reinforced compositesâ€? Studies on the interaction between birch veneer and compounds with biocide potential actionâ€? Effect of methanogenic inhibitors, inocula type, and temperature on biohydrogen production from food componentsâ€? Energy from biomass in pul... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25313
Quality analysis of the soils in the Cordun metallurgical platform area
Environmental Engineering and Management Journal › Vol. 7 › Nr. 6 AbstractThe present article deals with the study of the quality of the soils in the Cordun area – the waste dump. This refers to the characteristics of the analyzed location site (geomorphological, geological considerations, the pedological and agrochemical characterization of the soils in the area outside the plant), but also to the establishment of the pollution rate in the location site (experimenata data, results and debates). The conclusion of the present article is that the analyzed area... Autori: Elena Doinita Carlig, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25315
Environmental issues from an economic perspective
Environmental Engineering and Management Journal › Vol. 7 › Nr. 6 AbstractThe paper discusses some aspects concerning environmental issues considered from an economic perspective, since economic globalization as well as ecological globalization follows new ways of conditioning each other. In the past the most important thing was the impact of the environmental protection pressure - soil deterioration, water system, the atmosphere and the forests - uponeconomical perspectives. In the recent past years the society had to face the quick growth of the economical i... Autori: Ionel Bostan, Petru Condrea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25316
Studies on the influence of irrigation on a calcic chernozem in the eastern region of Romania
Environmental Engineering and Management Journal › Vol. 7 › Nr. 6 AbstractThe Romanian strategy in the field of irrigations for the years of 2008-2011 consists of the modernization of the existing works covering about 3.1 mil. ha, while for the years of 2011-2025 the irrigation of additional area of 0.9 mil. ha is expected. In the climate conditions of Romania, the irrigation has a complementary character over the precipitations. Because of this reason, a correct regime of irrigations needs a very good correlation between watering and precipitations in order t... Autori: Dorin Cotiusca Zauca, ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25317
Overview of ex situ decontamination techniques for soil cleanup
Environmental Engineering and Management Journal › Vol. 7 › Nr. 6 AbstractThe paper is a short review on the soil decontamination applying ex-situ techniques. Some sources and pathways of soil contamination are discussed. It was revealed that available techniques for soil decontamination can be divided in two parts, depending on where the action have place: in-situ or ex-situ. Also, depending on the nature of the process, these techniques can be biological, physical-chemical and thermal. In order to decontaminate soils properly, the primary contaminants ... Autori: Lucian Vasile Pavel, Maria Gavrilescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25318
Environmental engineering education in Iran: needs, problems and solutions
Environmental Engineering and Management Journal › Vol. 7 › Nr. 6 AbstractSince public concerns about the environmental issues have increased, several universities all over the world have been establishing environmental engineering programs. Environmental engineering programs in Iran at graduate level have been developed since 1990. At the present time, there are ten universities are presenting environmental engineering programs at graduate levels. The environmental engineering education systems of almost all Iran universities are quite traditional. As the env... Autori: Ahmad Tahershamsi, , Reza Maknoon ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25324
Identification, communication and management of risks relating to drinking water pollution in Bihor county
Environmental Engineering and Management Journal › Vol. 7 › Nr. 6 AbstractAt global level, the microbiological quality of water is a matter of concern, since diarrhoea represents the second cause of mortality. In addition, nitrates represent a significant problem and their high concentration - above the accepted limits - in drinking water is frequently encountered in Romania. Water samples have been analyzed in accordance with the methodology recommended by The Public Health Institute Bucharest. 78.15% of the water samples evaluated during the interval 2004-20... Autori: Claudia Sarmasan, Lucia Daina, Sonia Draghici ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25325
Earth oil extraction - major environmental pollution source
Environmental Engineering and Management Journal › Vol. 7 › Nr. 6 AbstractThe work presents the negative environmental impact produced by an extraction of crude oil activity. To highlight and quantify the negative effects on the environment produced from such activity, the experimental part has been focused on evidence of samples of soil, water from groundwater aquifers and surface, and the air emissions. The values of quality indicators are presented in graphs and tables, highlighting an activity with all major impact on the environment.... Autori: Aurica Grec, Corneliu Maior ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25326
Migration and fate of persistent organic pollutants in the atmosphere - A modelling approach
Environmental Engineering and Management Journal › Vol. 7 › Nr. 6 AbstractConsidering that the fate and behaviour of contaminants within the environment is an extremely complex issue, this paper analyzes the development of predictive models which can contribute to the understanding of the release of a contaminant. Different types of models concerning the atmospheric transport of POPs are examined, taking into consideration that these models can be used to simulate the behaviour of contaminants. A successful simulation, in which there is satisfactory agre... Autori: Camelia Smaranda, Maria Gavrilescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25327
Management of waste in rural areas of Gorj county, Romania
Environmental Engineering and Management Journal › Vol. 7 › Nr. 6 AbstractOn the top of the ecological priority list in Romania, waste management is on the third place following the problems regarding the surface and underground water pollution, as well as that of the atmosphere. The clean-up of the landscape represents an issue largely discussed in Romania. The paper presents the advantages of waste management for the landscape, which includes: waste gathering and transfer, waste selection, waste biological treatment and the storage.Some analyses of the const... Autori: Camelia Capatana, Claudia Maria Simonescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25331
Studies on equipment corrosion in catalytic reformation of C1 - C5 fraction
Environmental Engineering and Management Journal › Vol. 7 › Nr. 6 AbstractObservations and data regarding the intense corrosion and deposit phenomena of the carbon steel tube bundle of the heat exchanger are presented. The bundle ensures the cooling of the light fraction C1 - C5 from the top of the distillation column which carries out the removal of pentane and smaller derivates into the RC equipment. Chemical and mineralogical analyses confirm the aggressive action of the fluids flowing through the exchanger. Tests have been done in order to replace the carb... Autori: Ana-Daniela Georgescu, Lucian Georgescu, Maria Apostolescu, Nicolae Apostolescu, Ovidiu Georgescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25333
Effect of vanadium replacement by zirconium on the electrochemical behavior of Ti6Al4V alloy in Ringer´s solution
Environmental Engineering and Management Journal › Vol. 7 › Nr. 6 AbstractThe electrochemical behaviour of Ti6Al4V and Ti6Al4Zr alloys has been evaluated in Ringer's solution at 250C. The effect of the substitution of vanadium in Ti6Al4V alloy has been specifically addressed. The evaluation of the corrosion resistance was carried out through the analysis of the open circuit potential variation with time, potentiodynamic polarization curves, and electrochemical impedance spectroscopy (EIS) tests. Very low current densities were obtained (order of nA/cm2) from t... Autori: Adrian Cailean, Daniel Mareci, Daniel Sutiman, Igor Creţescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25334
Removal of acid red 398 dye from aqueous solutions by coagulation/flocculation process
Environmental Engineering and Management Journal › Vol. 7 › Nr. 6 AbstractThe removal of Acid Red 398 (AR398) dye from dye-containing solution using coagulation/flocculation process with polyaluminum chloride (PAC) and Alum was investigated. The effect of different parameters involving pH, dosage of coagulant, initial dye concentration, and bentonite as a natural coagulant aid was examined. According to the obtained results, the optimum pH, at which the maximum removal occurred, was about 4 and 5 for PAC and Alum, respectively. However, PAC performed efficient... Autori: Maryam Hasani Zonoozi, , Mokhtar Arami ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25335
Investigations on the possibility of natural hemp fibers use for Zn(II) ions removal from wastewaters
Environmental Engineering and Management Journal › Vol. 7 › Nr. 6 AbstractNatural hemp fibers have been evaluated for Zn (II) ions sorption from diluted aqueous solutions. In order to establish the optimum conditions, the effect of initial pH of solution, hemp dose, Zn (II) concentration, temperature and contact time of phases on the Zn (II) sorption by natural hemp has been studied. To model the Zn (II) sorption at three different temperatures the Langmuir and Freundlich isotherms have been used. The Langmuir maximum sorption capacities were determined as bei... Autori: Carmen Paduraru, Lavinia Tofan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25336
Environmental Engineering and Management Journal, Vol. 9 Nr. 2
Environmental Engineering and Management Journal › Vol. 9 › Nr. 2 - Artificial intelligence applications in the atmospheric environment: status and future trends- Kernel methods and neural networks for water resources management- Environmental decision support systems based on models and model-based reasoning- Towards an intelligent tutoring system for environmental decision makers- SBC-MEDIU: A multi-expert system for environmental diagnosis- Fast and accurate residential fire detection using wireless sensor networks- Validation of a knowledge-based risk mode... Autori: http://www.ecozone.ro/reviste.php?RID=25377
Environmental Engineering and Management Journal, Vol. 7 Nr. 6
Environmental Engineering and Management Journal › Vol. 7 › Nr. 6 Include urmatoarele articole:â€? Composite membranes with cross-linked matrimid selective layer for gas separationâ€? Determination of organic compounds from different types of coffee by Hplc and Gc-Ecd analysisâ€? An integrated assessment of the suitability of domestic solar still as a viable safe water technology for Indiaâ€? Investigations on the possibility of natural hemp fibers use for Zn(II) ions removal from wastewatersâ€? Removal of acid red 398 dye from aqueous solutions by coagulation... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25340
Adsorption of N-hexane vapors onto non-functionalized hypercrosslinked polymers (hypersol-macronet TM) and activated carbon: Equilibrium studies
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 AbstractTwo non-functionalized hypercrosslinked polymeric resins type Macronet (MN 202 and MN 250) were employed to remove nhexane vapors from gas phase. A comparison of the equilibrium behavior of these hypercrosslinked resins and a bituminous granular activated carbon was made. The initial n-hexane concentration in the air stream ranged from 2100 to 4500 ppm and the adsorption temperatures were 30oC, 40oC and 50oC. The results showed that the MN 250 presents the higher adsorption capacities of... Autori: Adela Marilena Buburuzan Haleta, Cezar Catrinescu, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25341
A computing model for optimal sizes of protected areas considering animal bioindicators
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 AbstractThe authors propose a calculation example of the optimal sizes regarding the protected areas, taking into account the biological, ecological and behavioral needs of the animal species which are situated in the top of the trophic pyramid. Carnivores and great herbivores are considered the best bioindicators for the Romanian ecosystems.... Autori: Corneliu Maior, Petru Aurel Darau, Viorel Soran ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25342
Impact of human activities on the soil in Vaslui county
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 AbstractThe soil is a fundamental component of both urban and rural environment, the main reason behind the fact that the protection of soil and subsoil is a matter of national importance. By its position and characteristics, the soil is, in fact, the convergence area of all the pollutants, of which the most are airborne. The present paper, which presents the sources of heavy metals as well the impact of those on the soil from Vaslui county, is part of a series of papers published as preparation... Autori: Mihaela Budianu, ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25343
Removal of some environmentally relevant heavy metals using low-cost natural sorbents
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 Abstract The sorption of metal ions from aqueous solution plays an important role in water pollution control and in recent years there has been considerable interest in the use of low-cost adsorbents. Many researchers have tried to exploit naturally occurring materials as low-cost adsorbents, for removing of heavy metals. In this article the removal performance of various low-cost adsorbents derived from agricultural waste or natural material is evaluate... Autori: Raluca Maria Hlihor, Maria Gavrilescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25379
An overview of decision support systems for integrated water resources management
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 AbstractIntegrated water resources management requires planning and management activities, as well as adequate information and communication within a structure that groups different stakeholders (industry, agriculture and other types of water users, civil society representatives, university and research institutions, water authorities and waterworks companies), being thus characterized by a high level of complexity, and requiring the involvement of numerous decision-makers operating at different... Autori: , , Luminita Lupu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25344
Survey on the dynamic of urban air pollution in the municipality of Craiova, Dolj county
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 AbstractUrban air pollution is responsible for the highest burden of environmentally related diseases in Europe. Air pollutants with strongly indicated respiratory health effects are particulate matter, nitrogen oxides and sulfur dioxide. The retrospective ecological survey has taken into account the urban air pollution with sulfur dioxide (SO2), nitrogen dioxide (NO2), ammonia (NH3) and particulate matter (PM10). The analyzed data show that after applying the European regulations regarding the ... Autori: Catalin Adrian Petrisor, Dorin Petrişor, Lucreţiu Radu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25348
The Algae Blooms phenomenon - A mathematical model
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 Pollution with sources from towns and industrial centres affect considerable the ecosystem waters. An accumulation of nutrients favourable to the growth of certain tiny marine organisms called phytoplankton stimulates their rapid reproduction in the water.These plankton blooms appear as patches on the surface of the water. The consequence of this process is the diminishing of the amount of oxygen from water (in the process of decompose the algae), the decease of aquatic animal and the multiply o... Autori: Laura Stefanescu, Laura Ungureanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25351
Environmental impact assessment induced by an industrial unit of basic chemical organic compounds synthesis using the alternative method of global pollution index
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 AbstractThe technological process of basic chemical organic compounds synthesis is included among the economic activities that can affect the environment quality. The environmental impact of chemical organic synthesis is evaluated using the alternative method of global pollution index that considers the concentric circles graphical methodology proposing a scale of the arithmetic mean values for the evaluation scores of each environmental components (e.g. water resources, gaseous emission, soil a... Autori: Carmen Zaharia, Ilie Murăraşu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25352
Sonic solution for the reduction of weight of the wind tower nacelle
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 AbstractThe paper presents an original method, as well as a calculus mode of the main hydraulic parameters, for the transfer of the aeolian power from the nacelle of the tower to its base. The system proposes the existence in the nacelle of a two-, three- or poly- phased sonic generator, from which the obtained energy is transferred by some pipes to the base of the tower, where this can be easily transformed in electric energy. The paper treats the two-phase variant. An important consequen... Autori: Ioan I. Pop, Ioana Denes-Pop ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25356
Monitoring of PAHs in refinery effluents
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 AbstractA study was fulfilled concerning the source and the distribution of PAHs in the effluent proceeding from an oil refinery. The monitoring of the PAHs concentration in the refinery’s effluent also was performed during a year long. The practical goal of the work was to observe the complying with the limits imposed by the current legislation and to identify the potential risks of exceeding these limits in the future. For this study, gas chromatographic and HPLC methods were used. The metho... Autori: Anca Iuliana Birladeanu, Claudia Irina Koncsag, Mariana Popescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25357
An experimental three-stage hybrid constructed wetland system for removal of organics and nutrients from domestic wastewater
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 AbstractAn experimental three-stage subsurface flow constructed wetland system was investigated for the removal of nutrient and organic matter from primary-treated domestic wastewater. Built in the Turkey Scientific and Technical Research Council-Marmara Research Center, Gebze, Turkey (Istanbul), the system consisted of a vertical flow-gravel filtration in the first stage, a horizontalsubsurface flow bed vegetated with Iris in the second stage, and a vertical-subsurface flow bed vegetated Phragm... Autori: Bilal Tuncsiper ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25358
Glucose oxidase - vanadium substituted anionic clay as bionanocomposite formulations for biosensors applications
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 AbstractChemical sensors utilizing immobilized enzymes and proteins are important for monitoring chemical processes and biological systems. Glucose oxidase (GOx) from Aspergillum Niger is a flavoenzyme that has been used to determine glucose. Among the conventional methods of enzyme deposition the main strategy consists in its entrapment in an inert matrix adsorbed on the electrode surface. We report here the synthesis and physical – chemical characterization of a new bionanocomposites obtaine... Autori: , Gabriela Ciobanu, Ion Balasanian, Simona Ratoi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25359
Residues of polycyclic aromatic hydrocarbons in different stages of Capsicum annuum (pepper) and Solanum lycopersicum (tomato) growing
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 AbstractPolycyclic aromatic hydrocarbons (PAHs) are included in the European Community (EC) and in the Environmental Protection Agency (EPA) priority pollutant list due to their mutagenic and carcinogenic properties. PAHs emissions from automobile traffic and industry activities were shown to influence the PAHs levels and profiles in vegetables grown nearby. The levels of 15 PAHs were determinate in samples of pepper (Capsicum Annuum) and tomato (SolanumLlycopersicum) in different stages of plan... Autori: Alina Soceanu, Dan Tiberius Epure, Gabriela Stanciu, Simona Dobrinas, Valentina Coatu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25360
Pulsed high voltage discharge technology as a new method for killing Hepatitis C virus (HCV) cells
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 AbstractPulsed high voltage discharge technology is a newly developed method for knock out viruses in blood with various electrohydraulic discharge reactors. The aim of this study is to investigate the effect of an electrohydraulic discharge treatment system on Hepatitis C virus (HCV) behaviour. The electrohydraulic discharge (EHD) reactor consist of high voltage point discharge electrode above blood surface and cylindrical ground copper electrode containing the blood (in the same time act as th... Autori: Gamal M. El-Aragi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25362
Electrochemical characteristics of Ti6Al7Nb alloy in Ringer’s solution
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 AbstractTitanium alloys show attractive properties for biomedical applications where the most important factors are biocompatibility, corrosion resistance, low modulus of elasticity, very good strength-to-weight ratio, reasonable formability and osseointegration. The aim of present study was to evaluate the electrochemical behaviour of Ti6Al7Nb alloy in Ringer’s solution of different pH. This evaluation was carried out through the analysis of the potentiodynamic polarization curves, and electr... Autori: Daniel Mareci, Julia Claudia Mirza Rosca, Marina Garcia Falcon ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25363
Analysis of distribution of oxygen transfer rate in stirred bioreactors for bacterial broths
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 AbstractThe study on the distribution of oxygen transfer rate in a stirred bioreactor for Propionibacterium shermanii broths underlined the major influence of the presence and concentration of biomass on the interphasic transfer of oxygen. Owing to the bubbles surface blockage by the bacterial cells, the accumulation of biomass from 30.5 to 120.5 g/l d.w. led to the decreasing of kla for about 1.3- 2.4 times. Compared with the simulated broths without biomass having similar apparent viscosity, t... Autori: Adina Segneanu, Anca-Irina Galaction, Dan Caşcaval ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25364
CsHSO4/mesoporous silica composites - new electrolytes for solid acid fuel cells
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 AbstractHigh proton conductivity of CsHSO4 opened new opportunities for applications as electrolyte in solid acid fuel cells (SAFC). Relatively recent, it was proved that the accommodation of this solid electrolyte by silica supports improves its proton conductivity. During this work, solid acid CsHSO4 and its composites with mesoporous silica of SBA-15 and MCF-types as host materials were synthesized and studied for the first time. Studies were mainly focused on the influence of mesoporous supp... Autori: Adrian Ungureanu, Brindusa Dragoi, Emil Dumitriu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25366
Environmental Engineering and Management Journal, Vol. 8 Nr. 1
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 Include urmatoarele articole:â€? CsHSO4/mesoporous silica composites - new electrolytes for solid acid fuel cellsâ€? Trend in exhaust emissions from in-use gasoline vehiclesâ€? Analysis of distribution of oxygen transfer rate in stirred bioreactors for bacterial brothsâ€? Electrochemical characteristics of Ti6Al7Nb alloy in Ringer's solutionâ€? Pulsed high voltage discharge technology as a new method for killing Hepatitis C virus (HCV) cellsâ€? Hydrodynamic modelling of pollution with LNAPL gene... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25367
Environmental Engineering and Management Journal, Vol. 8 Nr. 2
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 Include urmatoarele articole:â€? Environmental Engineering and Management Journal, Vol. 8 Nr. 2â€? Bioengineering aspects of tissues culture bioreactors for medicine and environmental applicationsâ€? Removal of bis (1-chloro-2-propyl) ether from wastewater using sonodegradation and biodegradationâ€? A novel plasma reactor for toluene decomposition in contaminated air flowâ€? Study of the copper (II) removal from aqueous solutions by chelating resin Purolite S930 â€? Analysis of some metal levels... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25371
Environmental Engineering and Management Journal, Vol. 8 Nr. 3
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 â€? Bioremediation of contaminated air using a bioscrubberâ€? Quality risk evaluation of the groundwater resources on the moldavian areaâ€? Electrochemical characterization of some dental materials in accelerated environmental testingâ€? Preliminary study of simple and Fenton oxidation with hydrogen peroxide applied on final effluents from a zootechnical farmâ€? The environmental impact assessment caused by the dykes failureâ€? Revaluation of beer industry byproducts – medical implicationsâ€? ... Autori: http://www.ecozone.ro/reviste.php?RID=25372
Environmental Engineering and Management Journal, Vol. 8 Nr. 4
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 â€? Photocatalytic properties of titania - fly ash thin filmsâ€? Study of the viscosity of some biodiesel – diesel oil blendsâ€? Aspects refering to technical and leaching properties of the secondary aluminium slags - cement compositesâ€? Studies regarding phenol and 4-chlorophenol sorption by surfactant modified zeolitesâ€? Cu-Ni nanostructured electrocatalysts obtained by electrocodepositionâ€? Molecularly imprinted poly (vinyl alcohol) films for the selective absorption of glycyrrhizinic ac... Autori: http://www.ecozone.ro/reviste.php?RID=25373
Environmental Engineering and Management Journal, Vol. 8 Nr. 5
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 â€? Photocatalytic properties of titania - fly ash thin filmsâ€? Study of the viscosity of some biodiesel – diesel oil blendsâ€? Aspects refering to technical and leaching properties of the secondary aluminium slags - cement compositesâ€? Studies regarding phenol and 4-chlorophenol sorption by surfactant modified zeolitesâ€? Cu-Ni nanostructured electrocatalysts obtained by electrocodepositionâ€? Molecularly imprinted poly (vinyl alcohol) films for the selective absorption of glycyrrhizinic ac... Autori: http://www.ecozone.ro/reviste.php?RID=25374
Environmental Engineering and Management Journal, Vol. 8 Nr. 6
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 â€? Physiological changes in seedling germination and growth plant under chemical stress conditionsâ€? Studies on sorption and transport processes of cadmium in soilsâ€? Assessment of the anthropogenic impact on water systems by fluorescence spectroscopyâ€? Research on the effects of soil improvement by fertilization on the quality of winter wheatâ€? Halotherapy: From ethnoscience to scientific explanationsâ€? Study regarding the sorption of erythrosine from aqueous solution onto soilâ€? Hydroxy... Autori: ISSN: 1582 - 9596 http://www.ecozone.ro/reviste.php?RID=25375
Survey of electromagnetic environment due to mobile communications
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 AbstractThis paper presents an analysis of the levels of electromagnetic fields caused by cellular base stations or mobile phones, measured in some residential areas. A statistical processing of the data has also been done in order to estimate both the short-term and the long-term variability of the fields caused by cellular base stations in some apartments and on the terraces of the apartment buildings at tens or hundreds of meters distance from the antenna systems. In some places, comparative ... Autori: Alexandru Salceanu, Ionut Nica, Valeriu David ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25381
Minimization of cutting fluids ecological impact by near dry machining
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 AbstractThis paper analyses a new technology for minimizing the use of metalworking fluids (MWF) during the machining process. Despite the fact that near dry machining (NDM) produces almost similar cutting performance to conventional flood supply machining while using much less MWF, for being fully utilized in industry is necessary to research ecological impact of these machining techniques. To take full advantage of minimal quantity lubrication (MQL) technique and expand its applicability, an u... Autori: Domnita Florina Fratila ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25382
Optimization of a gas chromatographic method for acrylamide analysis applications for risk management
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 AbstractThe paper proposes a simple and less expensive gas chromatographic method for analyzing acrylamide in food and reveals comparative results regarding the acrylamide content in commercial and home toasted bread. Validation of the method has been achieved by establishing parameters linearity, limit of detection (LOD = 0.1 mg/L), limit of quantization (LOQ = 0.5 mg/L), precision, stability. Run-to-run precision was determined by carrying out five replicate determinations for three acrylamide... Autori: Anca Irina Burlacu, Rodica Cuciureanu, Patricia Fitterman, Michel Larroque ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25385
Materials processing using solar energy
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 AbstractThe main aspects refer to metals and refractory materials behaviour, at high temperature, to materials purifying and to achieve some chemical syntheses.The main technological parameter of the heating is temperature, heating obtained by focusing Sun's rays. The heating can be used inside the furnace to produce metallic material into a crucible, without any complementary power source.For the future, a bigger interest presents some other metals melting, more expensive than steel, such as ti... Autori: Petrica Vizureanu, Cornel Samoila, Daniel Cotfas ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25387
Research on the use of environmentally friendly additives in the building industry
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 AbstractThe use of adhesives for floor covering have been deeply modified for longtime, by formulations of polymer-based products in aqueous dispersion as an alternative to organic solvents. These advances envisaged ways for obtaining nonpolluting products. Developing these adhesives required the parallel development of methods for monitoring and analyzing the emissions over time. This paper shows the results of some research devoted to identify the indoor presence of volatile organic compounds ... Autori: Irina Ioniţă, Domnica Ciobanu, Monica Tulbure, Iulian Tanţoş ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25388
Priority organic pollutants removal by ultrafiltration for wastewater recycling
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 AbstractUltrafiltration (UF) represents an important option for the advanced wastewater treatment as it offers good performances from both technical and economical points of view, for the removal of suspended solids, colloids and some of the organic compounds present in different effluents. The occurrence of priority organic pollutants in wastewaters streams and the environment has raised intensive scientific debates about their effects and the possible abatement technologies. As part of a broad... Autori: George Barjoveanu, ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25390
Treatment and management of distillery fermentedfruit spent marc. I. Processing into compacted solid fuel
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 AbstractThe study presents the processing possibilities for marc resulted as still residue from the distillation of fermented fruits in view to obtain a compacted solid fuel. Initial marc composition (carbon, hydrogen, nitrogen, sulphur and oxygen contents) determined by elemental analysis is evidenced, as well as technical characterisation (ash and moisture contents) and ash's qualitative composition, chemical characterisation of the liquid phase (pH, total phosphorus, acidity and conductivity)... Autori: Daniela Simina Stefan, Anca-Ileana Penu, Mircea Stefan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25391
Study of adsorption equilibrium of some wet aircomposite material systems
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 AbstractEquilibrium data of water vapor adsorption from wet air on several materials were experimentally determined at temperature values of 313 and 333 K and air relative humidity values ranged between 30 and 90 %. Experimental data were correlated with Langmuir and Freundlich models. The obtained results emphasize the significant difference between the water retained on the adsorbent materials impregnated with various salt solutions, and on classic adsorbents.... Autori: Ioan Mămăligă, Constantin Baciu, Stelian Petrescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25394
Optimization of process variables for cadmium removal from synthetic wastewaters by sphagnum moss peat
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 Abstract
The efficiency of Cd (II) removal from aqueous solutions was investigated using Sphagnum moss peat as sorbent. A 23 orthogonal central composite design was successfully employed for experimental design and analysis of results. The combined effect of the initial solution pH, peat dosage and initial Cd (II) concentration was studied and optimized using Response Surface Methodology (RSM). The optimum values of these variables were found to be pH = 4.72, 14.7 g peat /L and 13.64 mg Cd /L, ... Autori: Catalin Balan, Corneliu Cojocaru, Petru Bulai, Doina Bilba, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25399
Decontaminate effect of the functionalized materials with undoped and doped (Ag) TiO2 nanocrystals
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 Abstract
This paper presents the preliminary results of photocatalytic oxidation of humic acid from water using two types of catalysts, i.e., TiO2 and Ag-doped TiO2 modified zeolite (TMZ and Ag-TMZ). TMZ and Ag-TMZ, with zeolite granulation of 315-500 ?¬m was synthesized by sol-gel method, and the morphology and composition of the unmodified/modified zeolite were characterized by BET (Brunauer–Emmet–Teller) method, X-ray Diffraction (XRD), scanning electron microscopy (SEM) and energy dis... Autori: Cornelia Ratiu, Carmen Lazau, Paula Sfirloaga, Corina Orha, Daniela Sonea, Stefan Novaconi, Florica Manea, Georgeta Burtica, Ioan Grozescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25397
Study of the copper (II) removal from aqueous solutions by chelating resin Purolite S930
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 Abstract
This work examines the influence of experimental conditions on the copper (II) ions removal from aqueous solutions using chelating ion exchange resin Purolite S930. The influence of solution pH, initial metal concentration, contact time, temperature, ionic form of the resin and resin dose was studied in batch experiments. The percent of Cu (II) removal has a maximum at pH 5.0 (buffered solutions), and increases with the increasing of resin dose, of the contact time and of temperature... Autori: Petru Bulai, Catalin Balan, Doina Bilba, Matei Macoveanu ISSN: 1582 - 9596 http://www.ecozone.ro/reviste.php?RID=25401
A novel plasma reactor for toluene decomposition in contaminated air flow
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 Abstract
A new type of wire-cylinder plasma reactor, in which air flow shapes into gas torches is developed. The decomposition performance of toluene in contaminated air flow induced by pulsed corona discharge in the reactor is investigated experimentally under atmosphere pressure and room temperature. It is found that the decomposition efficiency is affected dramatically by air introduction way, and the ejection stimulates the decomposition of toluene compared with the conventional method. T... Autori: Zhihui Xie, Lingen Chen, Fengrui Sun, Qizheng Ye ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25402
Bioengineering aspects of tissues culture bioreactors for medicine and environmental applications
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 Abstract
Development of industrial cell culture processes needs a good engineering practice and system expertise in achieving a successful integrated process using disposable components. The bioreactors for 3D tissues systems could be an advantageous alternative in terms of low contamination risk, easiness of handling and scaling-up. A careful and strategic design of these equipments provides a better process control and a safe and reproducible production of tissue construct. They can offer t... Autori: Anca-Irina Galaction, Dan Caşcaval, Dan Zaharia, Radu Ciorap ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25404
Treatment and management of distillery fermented fruit spent marc. II. Processing by composting
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
This paper presents a comparative study of natural and mechanically mixed composting processes of marc resulting as a byproduct during the production of alcohol obtained from fermented fruits. Moisture, temperature, pH values, soluble fraction, total organic carbon, Kjeldahl nitrogen and ash content were monitored for 60 days. During this period the atmospheric temperature varied from 18Â?C to 21Â?C. The composting process could be considered a combination of three stages: mesophilic... Autori: Anca-Ileana Penu, Daniela Simina Stefan, Mircea Stefan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25407
Assessment of some heavy metals in soils, drinking water, medicinal plants and their liquid extracts
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
Pollution with toxic metals is a serious concern, because once these elements enter in the soil they can be present for a long time, with the potential contamination of drinking water sources. Certain metals in soil may be taken up by plants which are subsequently harvest for human consumption. Our objective was to study the presence of heavy metals in soils, groundwater sources, some medicinal plants from areas of the water sources and in its watery extracts. All of the samples, af... Autori: Diana Diaconu, Victor Nastase, Mara Mihaela Nanau, Ovidiu Nechifor, Elena Nechifor ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25411
Preparation and characterization of sodium alginatechitosan microparticles for controlled release of ibuprofen in a sustainable way
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
The preparation of microspheres containing chitosan, sodium alginate and ibuprofen and the pH dependent drug release were investigated. The microspheres were prepared by two experimental routes: the first one starting with a chitosan/ibuprofen core subsequently coated by an alginate shell (S1) and the second one based on an alginate/ibuprofen core, later coated by a chitosan layer (S2). The physical-chemical characterization was done by using Dynamic Light Scattering (DLS), Atomic Fo... Autori: Luminiţa Elena Balău, Nicolae Aelenei, Marcel Ionel Popa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25412
Iron containing anionic clays supported with iron and cerium oxides as catalyst precursors for NOx reduction
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
A facile and straightforward synthesis route, based on the anionic clay structural �memory effect??, has been used to obtain Fe2O3 or CeO2 supported on iron substituted hydrotalcite-like clay (FeLDH). The surface properties of the metal oxide / anionic clay ensembles were studies by X-ray photoelectron spectroscopy (XPS). After calcination at 550°C the derived mixed oxides were tested as new catalysts in the process of the selective catalytic reduction (SCR) of NOx using NH3... Autori: Gabriela Carja, Sofronia Dranca, Elena Husanu, Irina Volf ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25413
A study concerning diesel biodegradation in liquid medium, by bioaugmentation, using a Pseudomonas sp. strain
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
The paper presents the capacity of biodegradation of selected microorganism, cultivated on liquid culture media to which diesel was added in different amounts, to determine petroleum products and process efficiency. The optimum necessary conditions for development of microbial strains (pH, temperature, the quantities petroleum product / inoculum) have been established with the help of an experimental optimization program, SIMPLEX.... Autori: Dana-Camelia Cocut, Cornel Cojocaru, Mariana Diaconu, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25414
Researches on possibility to recover and reuse the Iron(II) sulphate from etching of rolled steels
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
The etching of iron materials in sulphuric acid solutions allows the dissolution of the iron oxides with formation of iron sulphates. The relatively low solubility of the formed sulphates imposes their separation for avoiding the contamination of the etching bath, as well as for preventing the environmental pollution through the wastewater. Within the flow sheet of the processing of the hot or cold rolled steel, a stage of separation by crystallization of iron sulphate is foreseen. T... Autori: Liliana Lazar, Ion Balasanian, Florin Bandrabur ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25415
Numerical simulation of pollution with anion SO4 2- for the aquifer inside a metallurgical waste hall
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
The current paper describes the concept and the mathematical models axed upon flow transport and transport of pollutants in the aquifer inside a metallurgical waste hall. Then, using a complex of basic data related to a representative case study - several information being achieved by systematic measurements, for long period, throughout ten drillings - and the pack of FEFLOW 5.1 programmes, the dispersion of an uppermost pollutant (the anion SO4) has been numerically simulated, for t... Autori: Elena Doinita Carlig, Esmeralda Chiorescu, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25416
Phytoremediation technology for remediation of radiostrontium (90SR) and radiocaesium (137CS) byCatharanthus roseus (L.) G. don in aquatic environment
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
Phytoremediation is an eco-friendly, cost effective, in situ treatment technology. In the present research study, phytoremediation technology has been employed for remediation of radionuclides namely 137Cs and 90Sr by using living green plant Catharanthus roseus. C. roseus plants were exposed to different activity levels of 137Cs and 90Sr in aquatic condition to assess the efficiency of plants for remediation of radionuclides. C. roseus plants have been found to remediate 70%, 52% an... Autori: Singh Anamika, Susan Eapen, Madhusudan H. Fulekar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25417
Utilization of coal fly ash from power plants II. Geopolymer obtaining
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
Study of geopolymer is a developing field of research for capitalizing solid waste and by-products in the view of new materials achievement having characteristics necessary for using as cement substitute. Also, it provides a solution to many problems regarding environment, such as reduction of gaseous emissions and particles matter resulted from cement industry and raw materials economy.
In this paper, the experimental conditions for obtaining new materials on the basis of fly ash f... Autori: Maria Harja, , Maria Gavrilescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25419
Reactive dyes removal from wastewater by combined advanced treatment
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
Textile industry is one of the most pollutant and water consuming industries. Large quantities of water are required in materials preparation and dyeing, so consumption and waste generation have become serious concerns for textile manufacturers and finishers. Textile effluents are characterized by high values of quality indicators such as BOD and COD, suspended solids and heavy metals. A serious environmental problem and also an aesthetic problem is the color of the effluent. Reactiv... Autori: Daniela Cailean, George Barjoveanu, Corina - Petronela Musteret, Liliana Rozemarie Manea, Nicolae Sulitanu, ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25420
Evolution of emissions of heavy metals in Vaslui County
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
Elaboration of the inventory of the pollutants emissions in atmosphere constitutes the basis for elaboration of the strategies and reglementations, assessment of the trends in evolutions of emissions, modeling of the pollutants dispersions, analysis of new sources, establishment of emission taxes, compliance with legislation, as well as review of existing reglementation and standards regarding the air quality.
The current paper describes both the evolution of the emissions of the he... Autori: Mihaela Budianu, Mihai Nicu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25422
From the risks evaluation to the health and safety preservation at work
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
As the prevention of the risks is one of the major stakes of any industrial activity, a priori, the evaluation of these risks constitutes one of the principal progress levers of the risks prevention step at a company. It is an opportunity to engage a prevention step in order to preserve health and to improve the employees' safety at work. However, as the companies are increasingly concerned of hygiene and quality, health at the work should be taken into account with the same interest... Autori: Ghania Chaib, Rachid Chaib, Ion Verzea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25423
The local storage coefficient of a layered soil
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
Analytical equations for the variation of soil moisture content and for the local storage coefficient for a layered soil with a relatively shallow water table were developed in this study, based on a linear distribution law of the moisture retention on soil's profile, and the van Genuchten-Mualem parametrical model for the moisture-suction curve.
By considering this mathematical model, an original computer code was written in MATLAB to determine and then to graphically represent the... Autori: Dan Prepelita, Stefan Popescu, Esmeralda Chiorescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25429
Photocatalytic oxidation process of sulfamethazine. Modeling based on neural networks
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
The photocatalytic degradation of sulfamethazine, a sulfonamide drug, has been investigated experimentally, in aqueous heterogeneous solutions containing n-type oxide semiconductors as photocatalysts, and by simulation, using neural network modeling. Through direct neural network modeling, the evolution of the photocatalytic oxidation process is evaluated as function of illumination time and type of catalyst. Inverse neural network modeling is a particular optimization that gives inf... Autori: Ciprian George Piuleac, Ioannis Poulios, Silvia Curteanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25430
The environmental impact assessment caused by the dykes failure
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
The paper presents a risk analysis and assessment of the defence linear systems failure (dykes) in case of accidental flood. Also, breach scenarios and hydrographs computation for the corresponding accidental high waters are provided. The impact assessment is highlighted through a global matrix model for costs quantification.
It is also presented the flooding computation model for different versions of the linear defence systems and in a correspondent way the Inundation Accidental D... Autori: Codruta Badaluta-Minda, Gheorghe Creţu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25433
Electrochemical characterization of some dental materials in accelerated environmental testing
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
The aim of this study is to investigate the electrochemical behavior of a three casting non-precious dental alloys: Vera PDI (Co-Cr based), Heraenium (Ni-Cr based) and NPG+2 (Cu-Al based) three test solutions: artificial saliva (AFNOR, pH = 8), acidified saliva (pH = 2.5) and fluoridated acidified saliva (1000 ppm F-, pH = 2.5).
Open circuit potential (EOC) measurement; potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS) are the electrochemical proce... Autori: Daniel Mareci, Daniel Sutiman, Adrian Cailean, Julia Claudia Mirza Rosca ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25435
Quality risk evaluation of the groundwater resources on the moldavian area
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
The analysis over the underground water monitoring system and the collected data from survey drilling show that the underground water has an unsatisfactory quality due to some physical and chemical characteristics. Along with these, factors like the surface water pollution, the hydrodynamic exchange between surface and underground waters and the reintroduction in the agricultural activities of nitrates and phosphorus based fertilizers lowers, as well, the quality that it has been tal... Autori: Ioan Crăciun, Catrinel-Raluca Giurma-Handley, Ion Giurma ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25436
Opportunities for valorization of steel slags
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
Using slag in steel making represents a challenge for road construction industry and decreasing environment interactions also.Steel making slag wit granulations of < 10 mm, which today have not a sure solution, represents the research object. The technological research solutions have aimed reducing CaO free content in these slugs, and reducing slug fraction with granulationof ... Autori: Florian Zaman, Mirela Gabriela Sohaciu, Ecaterina Matei, Cristian Predescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25439
Nanocomposite materials based on polymers and alumina nanoparticles
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
The synergistic combination of polymers and inorganic compounds via sol-gel process has attracted great attention, by manipulating structure at molecular level, for developing new materials with desired properties. These new hybrid materials could have a controllable combination of the benefits of polymers (flexibility, toughness, ease of processing) and those of ceramics or glasses (hardness, durability, thermal stability).
The microstructures and the properties of hybrid materials... Autori: Lucia Dumitrescu, Ileana Manciulea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25446
Uncertainty estimation-Case study for phenolic compounds determination in municipal wastewaters
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
The Romanian standard for the analytical method for phenols measurements in aquatic media was subject of internal validation procedure, adapted to the specific concentration domain of the laboratory. Method performance criteria were investigated on standard samples measurements: selectivity, linearity domain, precision, accuracy, limit of detection, limit of quantification androbustness. The validated method was further used on real samples of domestic and industrial wastewaters from... Autori: Carmen Dima, Cristina Jelescu, Camelia Draghici ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25448
Residues of polycyclic aromatic hydrocarbons from refinery spent catalysts
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
Spent hydroprocessing catalysts from petroleum refining industries have been classified as hazardous wastes due to their content in heavy metal and persistent organic pollutants (POPs). The aim of our paper determine the polycyclic aromatic hydrocarbons (PAHs) residues contents in spent catalysts samples from four different units of the Romanian refinery Rompetrol Rafinare,Constanta: Hydrogen (H), Gas Desulfurization Sulfur Recovery (GDSR), Hydrofining Turbojet Kerosene (HTK) and Pet... Autori: Camelia Draghici, , , Gabriela Stanciu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25449
New composites from solid waste
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
The waste recycling done in order to obtain composite products with performant properties and also, with long life cycle is the main purpose for the sustainable development. The present paper describes the way in which, different kind of solid wastes are immobilised in an organic resin as a binder matrix. Composites with different proportion of waste as, rubber/plastic, glass and silica sand have been obtained. The physical-mechanical properties and chemical stability of such organic... Autori: Ioan Ropota, Emilia Zamfirache, Marcela Muntean ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25450
Preliminary investigation aimed to ecological reclaiming by phytoremediation of a large flotation tailing dump in baia mare mining area
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
The flotation tailing pond Bozinta is located at 5 Km West from Baia Mare town. It is closed and is preparing for ecological reclaiming. Preliminary investigations have been made on the meteorological and climatologic indicators of the site. The temperature, air relative humidity, the wind speed, the rain values and the soil temperature have been measured during the vegetation period of 2008 year. The air temperature on the tailing pond is always 1?·2 0C higher than the values regist... Autori: Vasile Oros, Mirela Coman, Monica Marian, Leonard G. Mihaly, Anca Mihaly ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25452
Land degradation and desertification risk in Dobrogea region
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
It's well known the degradation of many Romanian (including Dobrogea) soils, both in hill and in plain environments, due to the increasing anthropic pressure on natural resources. Soil erosion and organic matter loss are recognized as the main processes responsible of such degradation and of the rising risk of desertification, to which land use changes and politics for agriculture not suitable for land specificities often contribute. The knowledge of land use impact on soil quality i... Autori: Marioara Nicolaescu, Naliana Lupascu, ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25453
Sludge recycling in ceramic matrix
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
In the new millennium to sustain a healthy life in harmony with nature, it will be extremely important to develop various materials and processes that minimize any harmful influence on the environment. The feasibility of sludge recycling in the brick manufacture was evaluated through laboratory testing. Several ceramic masses with clay, sand and various proportion of sludge have been synthesized and than characterized by their physical-mechanical properties. Sludge fineness also has ... Autori: Ana - Maria Szoke, Marcela Muntean ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25454
On the influence of ETS - 10 porosity and surface properties in retention of some nanoions and nanomolecules
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
Mesoporosity of about 7 nm in ETS-10 titanosilicate was generated by postsynthesis treatment with hydrogen peroxide under microwave irradiation, resulting in an increased external surface area of the materials (55 m2/g). The influence of titanosilicate porosity and its surface modification by phosphorus atoms (ET(P)S-10) on the retention of some nanoions (??-emitting radioactive U(VI) and Th(IV) ions) and biomolecules (the proteins cytochrome c, papain, and ??-globulin) was investiga... Autori: Robert Gradinaru, Sorin O. Valu, Stefan Postolache, Claudiu C. Pavel, Ion Sandu, Karin Popa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25455
Non-ferrous heavy metal metallurgy wastewater treatment by the electro-floto-coagulation method
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
Electroflotocoagulation is used for the treatment of liquid wastes of various origins, containing suspended matter. The metal hydroxide formed by electrochemical metallic ions generation acts to aggregate the colloidal impurities, and the hydrogen bubbles evolved at the cathode allow flotation of foam containing the impurities. The aggregates formed (containing the impurities) and lifted above the solution can then be removed. Electroflotocoagulation (simultaneous electrocoagulation ... Autori: Marius Constantin Mirica, Mirela Ioana Iorga, Adina Segneanu, Ionel Balcu, Doru Buzatu, Cristian Vaszilcsin ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25457
Mannich basis - Corrosion inhibitors in saline water
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
This paper presents the corrosion processes of steel samples with different composition, in aggressive corrosion solutions containing chloride ions. The inhibition capacity of two new Mannich basis: 2-aceto-4-morpholylmetyl-1-naphtol (BM1) and 1- (2'-hydroxynaphtyl)-3-(4-morpholyl)-1-propanone (BM2) was tested and compared. The corrosion tests were done in a potentiostatic installation and, based on the polarization curves, the Tafel plots were obtained. The kinetic and thermodynamic... Autori: Ileana Manciulea, Cristina Bogatu, Eugenia Comanita, Anca Duta, Lucia Dumitrescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25459
Comparative study on surface water treatment using aluminium sulphate and polyaluminium chlorides as coagulant reagents
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
The paper presents the comparative study regarding the turbidity removal using aluminium sulphate Al2(SO4)3*18H2O and polyaluminum chlorides, Aln(OH)mCl3n-m, commercial name, Sachtoklarr 39, in water treatment plant from Covasna City. The parameters that influence the treatment process and the efficiency of turbidity removal were studied. The water characteristic parameters of Basca Mare and Covasna rivers - the two sources of water alimentation for Covasna water treatment plant were... Autori: Daniela Simina Stefan, Cristina Costache, Viorica Ruxandu, Monica Balas, Mircea Stefan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25462
Clouds influence on the solar radiation for a mountain location
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
In designing an efficient photovoltaic system, the meteorological data of the system location must be considered. Field data registered over years prove the importance of the implementation site characteristics in the design and optimal exploitation of a PV system, because wetting and atmospheric gaseous and particulate pollution can strongly distort the incident solar radiation. Thus, in addition to the efficiency of the solar module, the tracking efficiency, the clouds crossing fac... Autori: Dorin Valentin Diaconescu, , Ioana Sinziana Hermenean, Maria Monica Vatasescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25464
Quantitative estimation of the solar radiation loss in Brasov area
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
Increasing the solar energy conversion into electrical or thermal energy represents an European and national priority, because it offers clean alternatives to the use of fossil fuels, in no pollutant systems, based on photovoltaic modules and solar collectors. The global solar radiation is the most important factor affecting the amount of energy produced by a PV module. In direct connection with the change in the solar energy conversion, the TR - Loss Coefficient (Tr??bungsfaktor) is... Autori: , Dorin Valentin Diaconescu, Maria Valentina Dinicu (Popa), Bogdan Gabriel Burduhos ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25465
Using zeolite-modified electrode for the electrochemical determination of 4 -aminophenol from water
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
Two types of zeolite-modified electrodes, e.g., Ag-doped zeolite-expanded graphite-epoxy (AgZEG) and Cu-doped zeoliteexpanded graphite-epoxy (CuZEG) composite electrodes were tested for the application of the electrochemical determination of 4-aminophenol (4-AP). The electrochemical techniques used for the electrochemical determination of 4-AP were cyclic voltammetry (CV) and chronoamperometry (CA). Some aspects related to the mechanistic behaviour are discussed. The electrochemical ... Autori: Cornelia Ratiu, Carmen Lazau, Corina Orha, Ioan Grozescu, Aniela Pop, Daniela Sonea, Florica Manea, Georgeta Burtica, Joop Schoonman ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25468
Electrochemical degradation and determination of 2,4-dinitrophenol from water
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
Certain conventional and alternative carbon-based electrodes, i.e., glassy carbon electrode (GCE) and, commercial boron-doped diamond electrode (BDDE) were investigated and compared for the electrochemical determination and degradation of 2,4-dinitrophenol (2,4-DNP). The electrochemical behavior of electrodes in the presence of target pollutants was investigated using cyclic voltammetry (CV), chronoamperometry (CA), and multiple-pulsed amperometry (MPA). The duality of the electrode ... Autori: Adriana Bebeselea, Cristina Proca, Florica Manea, Ciprian Radovan, Georgeta Burtica, Joop Schoonman ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25469
Surface water pollution generated by mining activities. Case study: Aries river middle catchment basin, Romania
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
The Aries River, due to its geographic position and its significance in the Mures - Tisza Basin, has a major impact on environmental media, influencing their quality. In the Middle Catchment Basin the main industrial activity is mining, since the Roman times, when the first mines were opened. The mining operations in the region generated a severe pollution of all the environmental media.
The paper identifies the risk areas in the middle Aries River in terms of surface water pollutio... Autori: , Lucrina Stefanescu, Camelia Costan, Mirela Miclean, Cristina Modoi, Serban - Nicolae Vlad ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25470
Enhanced heavy metal adsorption on dye-modified fly ash
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
The use of fly ash (FA) in wastewater treatment received a lot of attention for the immobilization of heavy metal cations, mainly Cd2+, Pb2+, Ni2+, Zn2+, Cu2+. For an up-scalable wastewater treatment process, the substrate must have good adsorption efficiency and relatively constant behaviour. Modifying the fly ash surface can be a solution for reaching both goals. The use of FA for heavy metals removal, from wastewaters resulted in the dye finishing industry, faces a supplementary p... Autori: Maria Visa, Anca Duta ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25471
Reactive organic carbonates with leaving group for biologically active dipeptides synthesis
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
The aim of this present paper is investigation of the reactions of preparation of unsymmetrical reactive carbonates from the corresponding symmetrical carbonates and different type of alcohols. The asymmetrical carbonates represent alternative reagents (mild, efficient) for alkoxycarbonylation of amines and amino-acids. The synthesized compounds were characterized by spectroscopic and chromatographic methods. A general method for preparation of asymmetrical carbonates was develop fro... Autori: Adina-Elena Segneanu, Ionel Balcu, Marius Constantin Mirica, Mirela Ioana Iorga, Marius Milea, Zoltan Urmosi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25472
Anti-inflammatory constituents from different plant species
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
Herbs have been used as food and for medicinal purposes for centuries. In recent years, natural compounds such as phenolic acids, phenolic diterpenes and triterpenes, present in various plants, have been the subject of intense research due to their potential benefits for human health. It has been demonstrated that the antioxidant and radical scavenge activities are the main properties of these compounds.
The main difficulties in using natural products as a source for pharmaceutical ... Autori: Ruxanda Bodirlau, Iuliana Spiridon, Carmen Alice Teaca, Narcis Anghel, Maria Ichim, Svetlana Colceru , Alice Armatu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25474
Membrane support of polyetheretherketone
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
A crucial stage which makes the other directions of development of membrane processes is getting new membrane materials, to meet increasingly stringent of selectivity and productivity. Polyetheretherketone shows high stability against chemical and physical agents but is poorly soluble in most common solvents. Present studies on obtaining the support of the polyetheretherketone membranes were limited by: solubility of polyetheretherketone in concentrated sulfuric acid and fast speed a... Autori: Mihaela Emanuela Craciun, Aurelia Cristina Nechifor, Florin Aldea, Gheorghe Nechifor ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25475
Characteristics of double jet imobilized membrane
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
This paper presents an experimentally study of the anionic iodide separation from a mixture with immobilized liquid membrane. The experiments were carried out in a double jet installation. In order to intensify the transfer of iodide ions from the source phase to the receiving phase, the both phases are dispersed as droplets in the membrane and the hydrodynamic parameters of the dispersed phases are measured with the photographic method. The photos of the droplets were taken with a C... Autori: Mihaela Emanuela Craciun, Mihaela Mihai, Gheorghe Nechifor ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25476
Anticorrosive protection system based on nanocomposites
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
Corrosion control, using inhibitors like, polymerisable porphyrins and multifunctional nanocomposites, is extremely useful in many environments. Phosphogypsum is a waste product resulted from the process of obtaining the phosphoric acid and it can be also used as corrosion inhibitor; in a mixture with other coating materials.
Two types of modified porphyrin: Na4TFP Ac - dissolved in KOH and H2SO4 and H2TPP - dissolved in benzonitrile, were tested. The structure characterization of pho... Autori: Ionel Balcu, Adina-Elena Segneanu, Marius Constantin Mirica, Mirela Ioana Iorga, Corina Amalia Macarie, Iuliana Popa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25477
Wastewater treatment using optimized TiO2 photocatalytic properties
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
The paper presents a comparative approach concerning the properties of TiO2 thin layers obtained via spray pyrolysis deposition (SPD) using hydrophilic and hydrophobic polymers as additives. The influences of composition (X-ray diffraction), morphology (Atomic Force Mycroscopy, Contact angle) and optoelectric (electrical conductivity, absorption, band gap and photocurrent) properties on the photocatalytic activity of the layers were studied.
... Autori: Alexandru Enesca, Luminita Andronic, Anca Duta ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25479
Studies on titanium oxide catalyst doped with heavy metals (cadmium, copper and nickel)
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
In order to improve the photo-efficiency of the electronic process as well as the response into the visible part of the spectrum, TiO2 doping with heavy metal (cadmium, cooper and nickel) have been employed. The objectives of this work are: (a) to prepare doped Me(Cd, Cu, Ni) TiO2 by doctor blade (DB) and spray pyrolysis deposition (SPD) techniques, (b) to characterize the catalysts, (c) to study and compare the activity of the Cd-TiO2, Cu-TiO2 and Ni-TiO2 catalysts on methyl orange ... Autori: Luminita Andronic, Bianca Hristache, Alexandru Enesca, Anca Duta, Maria Visa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25480
Microwaves effect over biomass hydrolysis
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
Changing fuel consumption to a more ecological environmentally alternative is replacing fossil fuels with fuels generated from renewable resources. Ethanol, a renewable fuel, can be produced mainly from crops, lignocellulosic biomass and different other environmental wastes. Although ethanol has been produced mainly from crops, there is a great interest in using cheaper lignocellulosic materials as a feedstock for ethanol production.
The aim of this paper is study of dilute acid hyd... Autori: Ionel Balcu, Adina-Elena Segneanu, Marius Constantin Mirica, Mirela Ioana Iorga, Corina Macarie, Raluca Martagiu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25481
New materials for water ozonization
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
Application of ozone is known to yield favorable results in purification of phosphate plant water from elemental phosphorus, in treatment of water of alkali aluminate solutions of aluminum plants, in decontamination of cyanide-containing waste water of enrichment plants, and so on. It has been proved that halogen-containing compounds, most of which have mutagenic properties, and some of which are carcinogenic to humans, are formed when water is treated with chlorine. Conclusions made... Autori: Irina Dumitriu, , ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25483
Gold nanoparticles for biological target conjugates
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
Nanotechnologies may have properties of self-assembly, stability, specificity, drug encapsulation and biocompatibility as a result of their material composition. Nano-particles are being actively developed for tumour imaging in vivo, bio-molecular profiling of cancer biomarkers, and targeted drug delivery. These particles are stable, environmentally benign, and their chemical properties
can be easily tailored by chemically modifying their surfaces.
Conjugated with pharmacological a... Autori: Simona-Florentina Pop, , ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25484
The impact of regional development on the environment
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
Various specialists draw attention on the conflict between the industrial civilization and the environment and mention two aspects:
1. The tendency of depletion of natural energy resources, raw materials and food, or consumption of renewable into a rhythm superior to their capacity of regeneration
2. Physical damage and pollution of the environment: water, air and land.
It can be said that a sustainable society is the one that shapes its economic and social system so that natural ... Autori: Dan Duran, Irina Duran, Ciprian Costescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25485
Issues on costs and investment for environmental protection
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
The concept of sustainable development has emerged in order to correlate the need to continue increasing the level of human and increasingly fragile �health?? level of environment. At the industrial level, things have moved more quickly. Thus, many companies use waste as fuel, and in some localities they are trying to implement systems for heating cottage on the combustion of waste. They are first to have acknowledged the eco-economical importance of recovery and reuse waste.... Autori: Dan Duran, Irina Duran, Adrian Diaconu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25488
Density of ecological wooden briquettes obtained from woody biomass
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
The paper proposes itself to present some aspects about woody biomass as renewable source of energy and about one of the main product namely wooden briquettes. There will be put the accent on physical features of wooden briquettes namely its density but there has be not forgotten the ecological influences. It is also stated the conditions of experimental, type of machine that is used in laboratory experiments, type and feature of raw material and wooden briquettes. Finally some condi... Autori: Aurel Lunguleasa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25491
Compression strength of branch wood as alternative eco-material to stem wood
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
The evolution of the request in wood production leads to larger stem wood consumption, intensive harvesting and consequently the environmental impact increases. One of the most ignored secondary resources in spite of limited reserves, branch wood could be used in new added value products as an alternative to stem wood, providing its characteristics are known and understood. This paper is part of a larger research project, which here compares the compression strength parallel to the g... Autori: Lidia Gurau, Marina Cionca, Cristina Timar, Alin Olarescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25492
Ecological polymer used for macro-defect-free cements (MDF) production
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
Macro-Defect-Free (MDF) cements are polymer-cement composites characterized by high value of flexural strength. Due to their thermal and electrical insulating properties, MDF cements could replace other insulators obtained by environmental non-friendlier technologies or being themselves toxic and non-biodegradable. MDF cements obtained by the use of an ecologic polymer (poly(vinyl alcohol)) shows high mechanical resistance in the initial state but also it’s dramatic decrease after ... Autori: , Georgeta Moise, Hulusi Ozkul, Ozgur Ekincioglu, Catalin Croitoru ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25493
Field testing and microscopy - Important tools for a realistic long-term evaluation of wood improvement treatments
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
The paper briefly presents the principle, methodology basics and the research opportunities offered by a modified L-joint test for a complex in-field evaluation of wood behaviour in outdoor above ground exposure, corresponding to the biological use class 3. A comprehensive and detailed examination of the tested samples, looking not only to the biological degradation of wood but also to wood cracking and coating performance (cracking, flaking, exfoliation, adherence), was performed an... Autori: Maria Cristina Timar, Emanuela Beldean, Mihaela Porojan, Lidia Gurau ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25494
Molecularly imprinted poly (vinyl alcohol) films for the selective absorption of glycyrrhizinic acid from aqueous solutions
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
Molecular imprinting is a versatile and ecological method for obtaining polymeric materials with a lot of applications in the field of pharmacy, medicine and biosensor assays. In this work, a new method of alternative molecular imprinting to design imprinted poly (vinyl alcohol) films has been proposed. Glycyrrhizinic acid has been used as template molecule. To demonstrate the obtaining of the molecular imprinted poly (vinyl alcohol) and its selectivity, studies of glycyrrhizinic and... Autori: , Catalin Croitoru, Georgeta Moise ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25495
Studies regarding phenol and 4-chlorophenol sorption by surfactant modified zeolites
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
Phenols and chlorophenols are contaminants in soils, sediments, surface waters and groundwater, largely because of their worldwide utilization in the last 50 years as wood preservatives and general biocides in industry and agriculture. The toxicity of chlorophenols and their persistence in the environment require advanced treatment techniques for their removal.
This study presents the results of a comparative evaluation of the adsorption of phenol and 4-chlorophenol from aqueous sol... Autori: , Cezar Catrinescu, Roxana Elena Apreutesei ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25497
Photocatalytic properties of titania - fly ash thin films
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
The paper presents the results obtained when using thin films (doctor blade) of titanium oxide powder (Degussa P25) and fly ashactivated with NaOH, for advanced treatment of complex waters resulted in the textile industry. There are studied the heavy metal(cadmium, copper) adsorption and the dyes (methyl orange and methylene blue) photo-degradation using these novel substrates.The thin films crystallinity (XRD), morphology and roughness (AFM) were evaluated and no significant changes... Autori: Anca Duta, Luminita Andronic, Maria Visa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25500
Emerging processes for soil and groundwater cleanup - potential benefits and risks
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
The cleanup of environmental pollution involves a variety of techniques, ranging from simple biological processes to advanced engineering technologies. Cleanup activities may also address a wide range of contaminants. Technologies to remediate contaminated soil fall into two principal clean-up approaches: in-situ (which is always done onsite), or ex-situ (which can be done on- or off-site). In-situ treatment deals with contamination without removing material from the ground, while ex... Autori: Maria Gavrilescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25501
The carbohydrates synthesis in Calendula Officinalis l. Leaves influenced by some mutagene substances
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
It is known that carbonhydrates are precursors of all bioactive substances we tried in thes paper work to do some investigation on these substances in the environmental area of Iasi. To observe the influence of some chemical mutagens substances on carbohydrates biosynthesis we conducted investigations on plant material (leaves) taken from the Calendula officinalis L species. We used this assay to examine the effects of the herbicide 2,4- dichlorophenoxyacetic acid (2,4-D), etidium br... Autori: Constantin Leonte, Roxana Vatavu, Teodor Robu, Irina Volf ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25502
Passive biomonitoring of atmospheric pollution with heavy metals using native epigeic moss
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
It were investigated some atmospheric sediments of copper and chromium in mining areas of Dorna Basin by passive monitoring with six species of native epigeic moss (Mnium hornum, Mnium cuspidatum, Mnium punctatum, Polytrichum strictum, Thamnium alopecurum si Cephalozia bicuspidate) in two stages: April - September 2005 and October 2005 - March 2006. Thesedeterminations were achieved in 4 locations: Dealul Boambei, Saru Dornei, Sarisorul Mic, Neagra Sarului. In the same time was deter... Autori: Catalin Dumitrel Balan, Ionela Mezdrea Cojocareanu Pata, Matei Macoveanu, Sandu-Marius Pata ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25503
Agricultural soil mapping
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
The recent results of technical development of low cost GPS systems, geographic information systems, equipment and sensors which are needed to identify the state of the crops and soils have shown a growing awareness in agriculture and related sciences. The actual demand for modern crop management is dominated by the economic pressure and by the social request to increase the transparency of environmental impact of agricultural land.
Currently, worldwide there are the public policy a... Autori: Vergil Marian Muraru, Cornelia Muraru-Ionel, Ion Pirna, Ion Tenu, Petru Cardei ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25504
The impact of mechanization technologies on soil
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 AbstractThe mechanization technologies of
soil works have a major impact on physical state of soil. This situation
is generated by the mechanical action of working parts which are
involved in soil works and by the traffic of running systems of tractors
and agricultural machines.These mechanization technologies have
been tested to determine which of them correspond to the highest degree
of sustainable agriculture concept and ensure protection, preservation
and improvement of agricul... Autori: Cornelia Muraru-Ionel, Gerard Jitareanu, Ioan Tenu, Petru Cojocariu, Vergil Marian Muraru ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25506
Study of copper and cadmium accumulation by bean
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
Bioremediation of heavy metal contaminated soil is one of the major concerns of our days. Phytoextraction has been lately utilized as an alternative of in situ remediation technology for polluted soils but is generally perceived to be too slow. Even so, phytoextraction is an efficient long lasting, accessible and environmentally friendly technique. The aim of this paper was to evaluate the phytoextraction potential of bean (Phaseolus vulgaris) in stress conditions induced by heavy me... Autori: Alina Stingu, Irina Volf, Valentin I. Popa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25508
Abiotic and biotic mitigation of volatile methyl siloxanes in anaerobic gas-phase biomatrices
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
This paper presents preliminary results of a batch-scale study assessing the contribution of the multiple phenomena involved in siloxane removal in three-phase biomatrices. Batch scale experiments were undertaken in shaken flasks containing acclimatised culture medium, solid media and siloxane vapours (octamethylcylotetrasiloxane and decamethylcyclopentasiloxane, respectively) under anaerobic gas-phase conditions. Abiotic and biotic phenomena, considered to be possible siloxane remov... Autori: Gabriela Soreanu, Patricia Falletta, Michel Beland, Kara Edmonson, Peter Seto ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25510
Numeric simulation of air pollution due to naval engines
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
This paperwork tried to simulate the combustion inside the naval engines using the newest computer methods and technologies with the result of a diverse and rich palette of solutions, extremely useful for the study and prediction of complex phenomena of the fuel combustion.
The paperwork is contributing to the theoretical systematization of the area of interest bringing into attention a thoroughly inventory of the thermodynamic description of the phenomena which take place in the co... Autori: Nicolae Buzbuchi, Liviu Constantin Stan, Daniela-Elena Mitu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25514
Bioavailability processes for contaminants in soils and their use in risk assessment
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
The individual physical, chemical, and biological interactions that determine the exposure of plants and animals to chemicals associated with soils are of great importance in the assessment of contaminants bioavailability. Understanding of bioavailability processes is at last needed to improve the scientific basis of risk assessment and is the purpose of the present research.
Since bioavailability processes are embedded within existing human health and ecological risk frameworks, so... Autori: Brindusa Mihaela Robu, Camelia Smaranda, Florentina Anca Căliman, Laura Carmen Apostol, Lucian Vasile Pavel, Maria Gavrilescu, Raluca Maria Hlihor ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25516
Innovative solutions creates environmental advantages
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
This paper is a study about the symbiosis between the environmental aspects – innovation and competitive character of an industrial organization in our modern and sophisticated world. In actually global market and in conditions of world sever recession, for any organization or economic sector, the chance for surviving and development is given by adopting an innovative culture. This work contains case studies about the necessary steps for developing an innovative organization, a deb... Autori: Florin Negoescu, Eugen Axinte, Gheorghe Nagit, Adrian Iosub ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25517
European frame for sustainable agriculture in romania: policies and strategies
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
The idea of sustainable farming relies on raising its yield along with a safe and constant gain with minimum environmental impact and by ensuring the population’s food security. Sustainable agriculture is a large concept that encompasses the complexity of this production system, the biological stability of farming plants and varieties, the conservation and protection of natural resources, but also the implementing and generalization of high-output modern technologies. Sustainable a... Autori: Brindusa Robu, Carmen Cătălina Ioan, Edinel Robu, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25520
Risk assessment and measurement of hazards in estonian enterprises
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
The paper focuses on occupational hazards and the determination of risk levels. Indoor climate, lighting, noise, chemicals and dust are examined. A simple/flexible risk assessment method is provided. The results of measurements of occupational hazards in six industries (mechanical, printing, wood, plastic, clothing and water purification plants) in Estonia are presented. The overall purpose of the paper is to draw the attention to the importance of measurements of occupational hazard... Autori: Piia Tint, Marina Jarvis, Karin Reinhold, Onnela Paas ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25521
Impact of landfill leachate on soil quality in Iasi county
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
Waste management hierarchy has as priorities waste recycling and energy recovery. Unfortunately, Romania is in the situation so as the waste landfilling is still considered as a suitable solution for waste management. European Union imposed a number of regulations and programs in the field of waste treatment and management that Romania must comply.
The paper describes some aspects regarding characterization of the leachate originating from the Tomesti landfill (situated in Iasi County... Autori: Ana-Maria Schiopu, Brindusa Mihaela Robu, Ion Apostol, Maria Gavrilescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25523
Tendences and perspectives regarding the recycling of automotive waste
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
The work studies the orientations regarding the recycling of the products from the industry of auto-vehicles parts and components, orientations that can provide solutions which permit to the enterprises producing auto components the efficient management of the related products and services during the whole life cycle of the products, from the conception phase to that of recycling.
The new way of approaching the development of metallic auto products promoted in Romania will contribut... Autori: Petrica Corabieru, Stefan Velicu, Dumitru Zait, Anisoara Corabieru, Dan Dragos Vasilescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25524
A new technology to obtain ecological steels
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
A friendly technology with the environment which consists of the elaboration of carbon steels through specific proceedings to powder metallurgy has in view the contribution of methane gas in iron powders at the same time with sintering. This technology is advantageous from various points of view: the final product is a part which does not need afterward processing with solid waste result and therefore the specific energy consume is lower, the wear and corrosion behavior is similar to... Autori: Olimpia Ghermec, Cristian Ghermec, Traian Popescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25526
Leaching of copper from cement-based waste materials
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
The use of appropriate leaching tests and leaching models can help to predict the hazardous components release from cementbased solidified waste during either utilization or disposal. Numerous parameters influence the leaching rates such as grain size/specimen size,ccc liquid-to-solid ratio, pH value of the leachate, leaching time etc. This study evaluates the effect of initial liquid-to-solid ratio of cement paste on the release of copper from cement-based solidified waste. Dynamic ... Autori: Constantin Bobirica, Liliana Bobirica, , Ionel Constantinescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25527
Equilibrium and kinetic studies of copper (ii) removal on Purolite S930 resin
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
The presence of heavy metals in the environment is a major concern due to their non-biodegradability, bioaccumulation tendency, persistence in nature and toxicity to many life forms. Different treatment techniques for wastewater laden with copper have been developed in recent years to decrease the amount of wastewater produced and to improve the quality of the treated effluent. All techniques have their advantages and limitations in application. One of the most used techniques to rem... Autori: Petru Bulai, Catalin Balan, Camelia Scripcariu, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25531
Using of industrial waste materials for textile wastewater treatment
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
Sorption is one of the several methods that have been successfully utilized for dyes removal. A large number of materials have been used as suitable sorbents for decolourization of industrial effluents: activated carbon (the most common but expensive adsorbent), polymeric resins, various low-cost adsorbents (agricultural and industrial by-products, peat, chitin, silica, bentonite, other clays, fly ash).
Our paper is a review about our researches regarding different types of industri... Autori: Daniela Suteu, Carmen Zaharia, Augustin Muresan, Rodica Muresan, Alina Popescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25532
Adsorption characteristics of Co(II) ions from aqueous solutions on romanian peat moss
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
Peat moss has been widely used as low-cost adsorbent to remove a variety of pollutants, including organic compounds and metal ions from aqueous effluents. Various functional groups allow such compounds to bind on active sites of peat moss. The adsorbent used in this study was Romanian peat moss sampled from Poiana Stampei (Romania). The adsorption of Co(II) ions from aqueous solutions on Romanian peat moss was studied in batch experiments, in order to establish the influence of initi... Autori: Corneliu Caramalau, Laura Bulgariu, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25533
Influence of soil particle size onto sorption of tartrazine from aqueous solutions
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
Tartrazine, (CI 19140) is an azo dye widely used in pharmaceuticals, cosmetics and foodstuff, as well as for coloring the textiles, hence it can be easily found in municipal wastewaters or wastewaters originating from textile, food, drugs and cosmetic industry. In this work, the capacity of a Romanian soil to retain Tartrazine from aqueous solution by sorption onto soil particles of different size has been investigated. The sorption kinetics was studied by applying five kinetic model... Autori: Florentina Anca Căliman, Laura Carmen Apostol, Dumitru Bulgariu, Laura Bulgariu, Maria Gavrilescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25534
Nitrogen adsorption of shale for use as media in constructed wetland
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
The constructed wetlands are considered as a low-cost alternative system for nitrogen removal. Shale was selected as a media in constructed wetlands, on the basis of adsorption capacity and suitability for plant growth. The specific objective of this study was to evaluate nitrogen adsorption capacity for using as a media in constructed wetlands. Shale was sieved into 5 particle sizes Shale A-E. The physical and chemical characteristics of shale showed that it is suitable to be use as... Autori: Amara Daothaisong, Jareeya Yimrattanabovorn ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25535
Removal of 4-chlorophenol by surfactant modified zeolites and surfactant modified alkali-treated natural zeolites
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
Chlorophenols are contaminants in soils, sediments, surface waters and groundwater, largely because of their worldwide utilization in the last 50 years as wood preservatives and general biocides in industry and agriculture. The toxicity of chlorophenols and their persistence in the environment require advanced treatment techniques for their removal.
Surfactant-modified natural zeolites (SMZs) represent an important class of sorbents for water treatment. This work presents a comparat... Autori: Roxana Elena Apreutesei, Cezar Catrinescu, Adrian Ungureanu, ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25537
Studies regarding advanced processes used for reactive dyes removal from textile effluents
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
In the textile finishing and dyeing industries, the total volume of water consumed is around 150 millions tons/year, and thus very large quantities of water are processed and produced as wastewater by textile plants. Quality indicators of textile wastewaters, like BOD and COD, have values which, in some cases, exceed 5 times the maximum concentration value (allowed by the national quality standards). One of the greatest concerns in wastewater treatment of a textile effluent is the co... Autori: Daniela Cailean, , Florin Brinza ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25538
Adsorption of humic acids and of some metal ions from aqueous solutions on activated carbons
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
This paper is the investigation concerning the removal, from surface water, of humic acids and of some cations (Cu2+, Al3+) on activated carbons AG-3, BAU, CASO-16 from individual solutions as well as from their mixtures both in static and dynamic conditions. The conclusions of the paper are that, when humic acids are adsorbed from micellar solutions, semiassociates are formed on the surface of activated carbon BAU (in its porous structure), while humic acids adsorption on activated ... Autori: Tudor Lupascu, Mihail Ciobanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25539
Studies regarding the potential of biodiesel production in the north-east development region of Romania
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
It is well known that the conventional fuels are responsible for environmental pollution. On the other hand, the unconventional sources for energy and biofuels are more environmentally friendly with a lower pollution degree than the conventional ones. Following the European Union Directive 2003/30/EC regarding the use of biodiesel in mixture with conventional diesel and its gradual replacement, Romania has either to produce its own percentage of biodiesel for the mixture or to import... Autori: Teodor Robu, Alexandru Dragos Robu, Aurel Chiran, Elena Gindu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25540
A green route to synthesize CeO2 nanoparticles
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
The paper presents the surfactant-assisted solvo-thermal route to synthesize nanoparticles of cerium oxide with different shape and morphology. The precursor was calcined at 400°C for 4 h in order to obtain CeO2 nanoparticles. The obtained samples were characterized by means of thermal analysis and FTIR spectroscopy. The UV-Vis analysis was used to study the optical properties.
The morphologies and nano-structures were characterized by scanning electron microscopy (SEM) and XRD. It... Autori: Nicolae Apostolescu, Gabriela Carja, Gabriela Apostolescu, Elena Husanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25541
Study of morphology for geopolymer materials obtained from fly ash
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
Geopolymerization is a continuous developing field of research for utilizing solid waste and by-products. It provides a solution to many problems where hazardous residue has to be treated and stored under critical environmental conditions. Consumption of fly ash in the manufacture of geopolymer is an important strategy in making materials more environmentally friendly. Fly ash has been chosen as a base material in order to utilize this industrial waste.
Previous researches have show... Autori: Maria Harja, Marinela Bărbuţă, Maria Gavrilescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25542
New carbonic adsorbents for industrial sorting purification in vodka production
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
Modern requirements for activated carbons utilized in the refinement of water/alcohol mixtures are discussed. It is demonstrated that activated carbons obtained from coconut shells and apricot and peach stones are very similar in terms of durability, physicalchemical and adsorptive properties, providing high quality sorting. Utilization of novel stone-derived carbons allows 2,5 fold enhancement of filtration rate, as well as 3 fold enhancement of working resource of carbon columns.
... Autori: Viktor Mihailovici Mukhin, Natalia Alexandrovna Shubina, Irina Mihailovna Abramova, Inna Dmitrevna Zubova, Tudor Grigore Lupascu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25543
Self-bonded ets-10 pellets containing iron
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
In this work the experimental conditions to synthesize, by direct hydrothermal synthesis, self-bonded pellets of ETS-10 phase containing iron were studied.
The following gel composition was used: xNa2O-0.6KF-1.28xHCl-yFe2O3-0.2TiO2-1.49SiO2-39.5H2O with 0.8Â???xÂ???1.4 and 0.015Â???yÂ???0.08.
The products obtained were characterized through X-ray diffraction on powders (XRD), thermal analysis (TG, DSC, DTG), scanning electron microscopy (SEM) and microanalysis (EDS). The data obtai... Autori: Pierantonio De Luca, Danilo Vuono, Monica Filice ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25544
Contributions to the improvement of ambiental comfort in residential buildings
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 Abstract
The aim of the study is to outline new opportunities of improving buildings ambient comfort and thus to determine energy consumption cut down. The second half of the XX century witnessed the development of society disregarding the extent to which environment was affected by the industrial production; pollution was triggered by the widespread industry which made use of technologies whose main target was the increase of production output at any cost, an aggressive industry with respect... Autori: Vladimir Corobceanu, Răzvan Giuşcă, Raluca Giusca ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25549
Plasma chemistry and the environment
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 Abstract
Plasma is often called the fourth state of matter. It is distinct from other lower-energy states of matter, most commonly solid, liquid, and gas, although it is closely related to the gas phase in that it also has no definite form or volume. Plasma technique may use any gas or gas mixture, within equipment limitations. Each gas or mixture of gases produces distinctive plasma, making possible a very diverse range of chemical environments. Besides the recombination mechanisms developed... Autori: Marian I. Totolin, Ghiocel E. Ioanid, Iordana Neamtu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25550
Improvement of buildings ambiental comfort by using environmental friendly materials and methods
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 Abstract
Starting from the disadvantages of the polystyrene system – the most important being that they are not biodegradable and their life cycle is relatively small, up to fifteen years – there were conceived several structures for outside walls made of perforated bricks vertically disposed and filled with granular materials. In this manner the thermal resistance is improved knowing that in gaps bigger than twenty millimeters there appear convective streams which substantially decrease ... Autori: Răzvan Giuşcă, Vladimir Corobceanu, Raluca Giusca ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25551
Assessment of human and natural impacts over water quality in the prut river basin, Romania
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 Abstract
The Integrated Water Resources Management (IWRM) concept evolved over time, the focus on river basin management, consultation and coordination with all water users, and the use of the �polluter pays?? principle being all included in the EU Water Framework Directive (EC Directive, 2000), which forms the basis of water management undertaken in Europe.
The role and significance of water resources for sustainable development, as well as the water crisis experienced nowadays are ... Autori: , Claudia Cojocariu, Corina - Petronela Musteret, Ioana Gabriela Dascalescu, Ionut Caraene ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25559
Modeling the extraction process of oil from seeds of white mustard (Sinapis alba)
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 Abstract
White mustard (Sinapis white) is an annual plant of the Cruciferae family originating from the Mediterranean region and is cultivated in Europe and Asia, mainly for its seeds, but also for animal feed or crop rotation. White mustard seed is also an important source of vegetable oil that can be used as fuel. The chemical composition of mustard seed (Sinapis alba) includes glucosinolate (sinalbozida, sinapina free), essential oils, fatty oils (glycerides of oleic acid, linoleic, linole... Autori: Camelia Ciubota-Rosie, Rodica Diaconescu, Irina Volf, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25561
Modeling and simulation of quality indicators of surface water
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 Abstract
The efficient understanding and application of mathematical models in the study of environmental phenomena keep up with the latest results in the mathematical domain which could provide solutions for controlling, analyzing, predicting and study of risk phenomena. This paper presents a browsing through some mathematical categories of interpreting statistical data, examples and their analysis in connection with the degree of polluting the water down the Danube River with the help of qu... Autori: Valerian Antohe, Constantin Stanciu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25562
Optimization of process variables to maximize the copper loading capacity of Purolite S930 resin
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6
Abstract
The practical capacity of an ion exchange or chelating resin depends on various process variables, such as initial solution pH, initial metal ion concentration, metal/resin ratio, contact time and temperature. This work presents the optimization of process variables to maximize the copper loading capacity of chelating resin Purolite S930. To study the combined effect of the initial solution pH, initial Cu (II) concentration and resin dosage were used a 23 orthogonal central composi... Autori: Petru Bulai, Catalin Balan, Corneliu Cojocaru, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25563
Particulate matter pollution in university area: Traffic flow analysis
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 Abstract
University campuses can be seen as �small cities’ due to their high population (students, professors, employees) and corresponding high traffic flow, which may have a significant impact on both environment and people health.
The objective of this work was to analyze particulate matter seasonal trends in the university area of Cosenza (University of Calabria). The relationship between sources emission, meteorological parameters and particle properties was defined. Sampling was co... Autori: Monica Filice, Pierantonio De Luca, Giuseppe Piero Guido ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25564
SnO2-CeO2 oxidation catalysts
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 Abstract
The aim of this work was to obtain ceria-based catalysts with improved oxidation properties by adding tin dioxide (5, 10 and 20 wt %) and using the co-precipitation method of preparation. The samples were characterized by BET, ESEM, and DRIFT spectroscopy. The activity of SnO2-CeO2 catalytic systems in CO oxidation was studied between room temperature to 673 K. It was found that the increase of SnO2 content obviously increases the low temperature CO conversion. However, at 673 K all ... Autori: Tatiana Yuzhakova, , Monica Caldararu, Jozsef Kovacs, Anca Vasile, Georgeta Postole, Cristian Hornoiu, Endre Domokos ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25565
An investigation of the sorption of acid orange 7 from aqueous solution onto soil
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 Abstract
The goal of the study was to investigate the sorption behavior of Acid Orange 7 (C.I. 15510) onto soil collected from Iasi area (Romania). The sorption isotherm, kinetic and thermodynamic studies were performed by batch mode. The effects of experimental parameters such as contact time, pH value (2-12) and temperature (20 - 400C) have been studied. Also the influence of initial dye concentration (10 - 100 mg/L) and sorbent dosage (from 5 g L-1 to 150 g L-1) were studied. It was found ... Autori: Camelia Smaranda, Dumitru Bulgariu, Maria Gavrilescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25566
Arsenate removal by Withania frutescens plant from the south-western Morocco
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 Abstract
Withania frutescens plant from the south-western Morocco was used as an environmentally friendly material for the removal of As(V) ions from aqueous solutions. This work presents the characteristics of the adsorption and the desorption processes of As(V) using the dried W. frutescens plant as an environmentally friendly adsorbent. The mass of the adsorbent, the As(V) concentration, the contact time and the pH of the tested aqueous solutions were used as controlled variable parameters... Autori: Mohamed Chiban, Gabriela Lehutu, Fouad Sinan, Gabriela Carja ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25568
Textile wastewater treatment by homogeneous oxidation with hydrogen peroxide
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 Abstract
The textile wastewaters have a diverse composition depending both on the used raw materials and applied manufacturing technologies. These wastewaters may contain various pollutants such as organic compounds (e.g. residual dyes), suspended solids, metal ions etc. Most of dyes are synthetic compounds with aromatic molecular structures and non-biodegradable. The oxidative destruction via homogenous oxidation processes with hydrogen peroxide (simple chemical oxidation with H2O2 or advanc... Autori: Carmen Zaharia, Daniela Suteu, Augustin Muresan, Rodica Muresan, Alina Popescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25570
Halotherapy: From ethnoscience to scientific explanations
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 Abstract
This article presents the use of salt water springs in the Moldavian Oriental sub-Carpathians for treating certain diseases, based on archaeological discoveries and ethnographical surveys, correlated with known facts from the literature in the field.
Nevertheless, what differentiates it from other similar area in Europe is the intense, unexpected continuity of traditional, nonindustrial water supplying coming from salt springs. Among the uses of salt water and halite in the area, th... Autori: Ion Sandu, Marius Alexianu, Roxana-Gabriela Curca, Olivier Weller, Constantin Pascu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25574
Assessment of the anthropogenic impact on water systems by fluorescence spectroscopy
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 Abstract
Organic matter is ubiquitous in every type of aquatic system and due to the influence that it has on their ecological health, can be used as a useful water quality indicator. Fluorescence spectroscopy has been efficiently used in the past decades to determine and characterize organic matter, and its link to function and chemical water quality.
In this paper, fluorescence fingerprints are presented in order to evidence the anthropogenic influence on different aquatic systems. Using f... Autori: Elfrida M. Carstea, Luminita Ghervase, Gabriela Pavelescu, Dan Savastru ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25576
Studies on sorption and transport processes of cadmium in soils
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 Abstract
Heavy metals produced and released by anthropogenic activities generate serious environmental problems. Ions of toxic metals can bind to the mineral surface in a number of ways, including absorption, adsorption, precipitation, ion exchange.
The paper shows that the fate and migration of heavy metals in soils strongly depend on the physical properties and chemical and mineralogical composition of such environments. Cadmium is one of the most toxic metals with carcinogenic and teratog... Autori: Vasile Lucian Pavel, Dumitru Bulgariu, Laura Bulgariu, Raluca Maria Hlihor, Maria Gavrilescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25577
Physiological changes in seedling germination and growth plant under chemical stress conditions
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 Abstract
When plants are exposed to heavy metals influence, the processes of growth inhibition, ion leakage of all membrane, distribution of pigment and even more death of plants are produced. The physiological and biochemical changes in germinating seedling and cultivation in plastic pots experiments of different plant species (maize, bean, oat, and spinach) were investigated under the influence of copper ions as stress agent. Differences between tolerances against copper excess in the case ... Autori: Alina Stingu, Irina Volf, Valentin I. Popa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25578
Overview on paper and board recycling in Europe
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
In Europe, recovered paper is a valuable raw material for the paper industry already since the early 20th century, actually corresponding to half of the total use of fibres for paper and board production. The aim of this paper is to describe the present status of paper recycling in Europe and thereby to create a data basis for evaluation the results of the FP7 project ?Recovered Paper Sorting by Innovative Technologies ? SORT IT. The overview is based on specific questionnaires addre... Autori: Dan Gavrilescu, Elena Bobu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25579
Enhancement of separation performances of a new azoic derivative from industrial water and the posibility to recover its complex as nanomaterial
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
In order to obtain new complexes of Fe(III) with multiple uses, their characteristics, important applications and also the obtaining conditions are studied. The obtaining conditions consist in mixing solutions of the same concentrations of ligand 2 amino-6-methoxy-benzothiazole sulphonic acid??†’1-naphtol-4-sulphonic acid with FeCl3. The solutions are mixed in molar ratios of 1:1, 2:1 and 3:1 (ligand to central metallic atom). For determining the molar ratio ligand:central metall... Autori: Daniela Zavastin, Doina Sibiescu, Igor Creţescu, Ioan Roşca, Mihaela Dana Tutulea, Mihaela Vizitiu ISSN: 1843-3707 http://www.ecozone.ro/reviste.php?RID=25581
A new real-time monitoring technique of the biochemical constituents of the environment
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
As a result of the global climatic changes generated by the alteration of the environment through polution, the ecosystems' natural ressources are incontrollably distributed, generating unforseeable effects at the level of the subsequent evolution of the natural balance factors. One of the greatest challenges of the science concerned with environment protection, is that of real time monitoring of the biochemical constitution. The real time monitoring of a great number of biochemical ... Autori: Andrada Pretorian, Bojin Dionezie, Gabriel Epure, Ion Savu, Lucia Mutihac, Mihaela Muresan, Nicoleta Petrea, Petrisor Zamora Iordache, Razvan Petre, Rodica Lungu, Vasile Somoghi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25583
Comparative study of the adsorption-desorption cycles of hexane over hypercrosslinked polymeric adsorbents and activated carbon
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
In this work, the behavior of n-hexane vapors in the adsorption-desorption cycles of non-functionalized polymeric adsorbents (MN 202 and MN 250) and granular activated carbon (AC 20) was studied. The adsorption experiments were performed in a fixed bed column, under dynamic conditions, at 30?C and atmospheric pressure. The inlet concentration of n-hexane in the air streams was 0.115 mg/cm3 (32500 ppm) and the space velocity was 2.75 s-1. Also, desorption experiments were performed in... Autori: Adela Marilena Buburuzan, Cezar Catrinescu, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25584
New complexes used to increase the dying process efficiency of the textile materials in the context of sustainable development
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
This work presentes a study of preparation and stability in aqueous medium of complexes obtained by the reaction between Fe(III) with 2-amino-6-methoxy-benzothiazol-sodium sulphonate ??†’1 naphtol-4-sodium sulphonate. In this purpose, the investigation methods applied were as follows: pH-metry, conductometry, and the UV-VIS spectrophotometry. The molar combination ratio of ligand to central metallic atom, and the stability constants for new obtained compounds were determined usin... Autori: Doina Sibiescu, Gabriela Carja, Ioan Roşca, Laura Chirila, Mihaela Vizitiu, Romen Butnaru ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25585
Chelating sorbent containing two types of functional groups hydroxamic acid and amidoxime for lead (II) ions effluent management
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
The removal efficiency of Pb(II) from aqueous solutions by sorption on a bifunctional acrylic ion exchange resin with groups of hydroxamic acid and amidoxime is presented. It was found that Pb(II) sorption potential varies as function of solution pH, initial metal concentration, contact time and temperature. From aqueous solutions with Pb(II) initial concentration of 82.96 ?ŽÂ?g/mL the sorption percentage is 98.64%. The Langmuir and Freundlich isotherms were used to model the Pb(II) ... Autori: Anca Ceica, Carmen Paduraru, Igor Creţescu, Lavinia Tofan, Violeta Neagu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25586
Removal of dunkel blau dye from aqueous solutions by fungal and peat biomass in batch mode
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
Wastewaters of textile and leather dying industries contain significant quantities of water-soluble dyes. Moreover the temperature and pH of these wastewaters may be controlling variables affecting the biosorption performance. In this study the sorption of dark blue dye by Aspergillus biomass and peat was studied as a function of temperature, initial dye concentration, and initial pH values. In addition, the effects of sorbent dosage on the sorption processes were systematically stud... Autori: Cornel Cojocaru, Cornel Pohontu, Igor Creţescu, Mariana Diaconu, Roxana Elena Benchea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25587
The treatment and minimization of metallurgical slag as waste
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
The slags are an important waste and by-products of metallurgical industry. The present paper summarizes results obtained from physical and chemical analyses on metallurgical slag provided from S.C. ?Mittal Steel Galati? S.A. The physical structure and gradation of granulated slag depend on the chemical composition of the slag, its temperature at the time of water quenching, and the method of production. The following mineralogical components were noticed through bypowder X-ray diffr... Autori: Maria Cioroi, Licuta Nistor Cristea, Igor Creţescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25588
Analysis of factors determining the behaviour of chromium in some romanian soils
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
Chromium (Cr) is one of the most common metal contaminants in soil because of its use in ore refining, production of steel and alloys, metal plating, tanneries, wood preservation, and pigmentation. In soil environment, the most stable oxidation states of chromium are Cr (III) and Cr (VI). While Cr (III) is considered an essential trace element for the functioning of living organisms, Cr (VI) is toxic and carcinogenic to humans via inhalation for long exposures, since it is easily sol... Autori: Dumitru Bulgariu, Laura Bulgariu, Maria Gavrilescu, Raluca Maria Hlihor, Vasile Lucian Pavel ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25590
In vitro corrosion study by electrochemical and surface analysis techniques of a ti50ta alloy for dental applications
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
Commercial pure titanium (Cp-Ti) and titanium alloys are used on large scale in restorative dentistry due to their advantages as compared with other similar materials: chemical inertia, low density, high strength, high corrosion resistance in biological media and increased biocompatibility.The effect of fluoride and pH on the corrosion behaviour of Cp-Ti and a new Ti50Ta alloy were examined by open circuit potential (EOC) measurement, linear polarization, potentiodynamic polarization... Autori: Daniel Mareci, Daniel Sutiman, Georgiana Ciurescu, Igor Creţescu, Romeo Chelariu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25591
Environmentally friendly techniques for chemical pulp bleaching
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
In the last decades there has been a rapid evolution of techniques for production of bleached pulp. Much of these processes have been environmentally driven. New techniques have been developed in order to replace chlorine-based reagents in producing bleached pulp. Reducing the environmental impact of pulp production can be attain by using non-pollutant bleaching reagents like oxygen and related compounds.
This paper deals with present findings and general trends in environmentally-s... Autori: Adrian Catalin Puitel, Alexandru Botar, Dan Gavrilescu, Gheorghe Dutuc, Grigore Craciun ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25592
Biosorption of malachite green from aqueous solutions onto biomaterials
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
The use of biomaterials as biosorbents for treatment of wastewaters will provide as a potential alternate to the conventional treatment methods. The main advantages of biosorption are high selectivity , cost effectiveness and good removal performance. World wide numerous low cost bio materials have tried for biosorption of dyes. In this present investigation, the dead biomass of Penicillium sp. fungus and wood sawdust was used as biosorbents and their capacity to removed malachite gr... Autori: Cornel Pohontu, Florin Luca, Igor Creţescu, Manea Liliana, Mariana Diaconu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25593
Device for rapid preparation of samples for detection and identification of the toxic compounds
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
This paper presents a portable device for rapid preparation of samples, in situ, in order to facilitate the detection and identification of toxic substances. This product is for research and provides increased sensitivity NBC detection equipment (ion mobility spectrometers, indicated tubes), and decreasing the time needed for preparation solid and liquid samples to identify toxic substances by spectrometric techniques (gas chromatography with mass spectrometry). It is used especially... Autori: Alexandru Bobes, Aurica Dumitrescu, Doru Alexe, Gabriel Epure, Liliana Rece, Nicoleta Petrea, Petrisor Zamora Iordache, Razvan Petre, Vasile Somoghi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25595
A case study of industrial water polluted with chromium (VI) and its impact to river recipient in western Serbia
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
In this work the method for the treatment of industrial waste waters effluents containing hexavalent chromium in three companies during process of treating metal surface with chromic acid is described. Industrial water polluted with hexavalent chromium is collected in separate sewage system. Polluted water is collected in precipitation tanks which are directly connected with neutralization reservoirs. The treatment process includes pre-neutralization by lime-milk, sedimentation, floc... Autori: Igor Creţescu, Mirjana Cvijovic, Predrag Djurdjevic, Slavica Cvetkovi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25596
Impact of chemicals on derivatives with important therapeutic activity in Calendula Officinalis L. flores
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
In the study, the accumulation of secondary metabolites present in Calendula officinalis L. flowers with importance in therapeutics was examined, after the treatment with some substances considered being mutagens. The effect of substances appliedat different concentrations and different times of action was studied, qualitatively and quantitatively, considering various methanol extracts, obtained from the inflorescenses of Calendula officinalis L, which contained polyphenolic fraction... Autori: Brindusa Robu, Constantin Leonte, Elvira Gile, Roxana Vatavu, Teodor Robu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25598
Calendula officinalis L., diclorphenoxiacetic acid (2,4 D), mutagenic, polyphenolic acids
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
The former Arad Chemical Fertilizer Plant had an important polluting effect on environment and, although it was shut down in 1990, its environmental heritage still exists. The paper contains a short description of the former plant and its impact on the environment, mainly on the quality of water and soil and emphasizes the effects of polluting heritage that still exists. Today, one of the major problems on the platform of the former Fertilizer Plant is the existence of all concrete b... Autori: Aurica Grec, Florin Dumescu, Ladislau Klein ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25599
Catalytic wet hydrogen peroxide oxidation of 4-chlorophenol over iron-exchanged clays
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
Chlorophenols were selected for this study because most of them are toxic and difficult to biodegrade. They represent a particular group of priority toxic pollutants listed by the US EPA in the Clean Water Act and by the European Decision 2455/2001/EC. The efficiency of advanced oxidation processes for degradation of chlorophenols has been extensively documented. The catalytic wet hydrogen peroxide oxidation process, involving oxidation with H2O2 and solid catalysts in mild reaction ... Autori: Brindusa Dragoi, , Cezar Catrinescu, Daniela Arsene ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25601
Kinetics considerations concerning the oxidative degradation by photo-fenton process of some antibiotics
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
The aim of this study is the evaluation of photo-Fenton as a suitable advanced oxidation process to degrade ampicillin and streptomycin antibiotics. The degradation was studied by monitoring the organic substrate concentration changes in aqueous solution as a function of reaction time using COD analysis. The oxidation process follows two successive stages. In the first stage (I) the oxidation of the antibiotics takes place with high reaction rate, leading to intermediate oxidation pr... Autori: Cristina Orbeci, Daniela Simina Stefan, Ion Untea, Madelene Dancila ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25602
Industrial district revitalization through sustainable development policies
Environmental Engineering and Management Journal › Vol. 9 › Nr. 2 Abstract
Despite their success, the so-called Italian Industrial Districts (IIDs) have to face the crisis caused by the phenomenon of globalization. The paper presents the interventions carried out in two industrial districts, tannery district of Arzignano and artistic glass district of Murano, in order to help the public administrations to improve the environmental situation.
Introducing strategic and social considerations in environmental initiatives and implementing ?radical? environmenta... Autori: Flaviano D'Amico, Giulio D'Amico, Ion Tanase, Marian Mihai Buleandra, Mihaela Buleandra ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25603
GIS analysis of wetland covered by Natura 2000 sites
Environmental Engineering and Management Journal › Vol. 9 › Nr. 2 Abstract
Geographical Information Systems (GIS) can be used in biological conservation as decision support systems, integrating the spatially referenced CORINE land cover and using data to assess whether natural protected areas cover particular types of ecosystems and/or biogeographical diversity.
This study analyzes whether the Natura 2000 sites, which are Special Protection Areas and Special Areas of Conservation declared in Romania cover the diversity of wetlands and coastal areas habitat... Autori: Alexandru-Ionut Petrisor ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25605
Analysis of distribution of oxygen transfer rate in stirred bioreactors for fungus broths 1. Suspensions of P. Chrysogenum free mycelia
Environmental Engineering and Management Journal › Vol. 9 › Nr. 2 Abstract
Unlike the P. shermanii and S. cerevisiae cultures, the study on the distribution of oxygen transfer in stirred bioreactor for P. chrysogenum free mycelia broths indicated that this process is controlled mainly by the high apparent viscosity of broths, and less by the presence of fungus biomass. For this reason, the influence of fungus accumulation on the reduction of kla is attenuated compared with that obtained for bacterial or yeasts broths. The lower influence of fungus biomass i... Autori: Anca-Irina Galaction, Dan Caşcaval, Marius Turnea, Stefanica Camarut ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25606
Energy consumption estimation in water distribution systems using fuzzy techniques
Environmental Engineering and Management Journal › Vol. 9 › Nr. 2 Abstract
This paper applies a fuzzy method for the estimation of the daily electrical energy consumption of the fresh water hydrophore stations of a water distribution system. Based on the uncertainties of the water distribution system, the fuzzy logic was used to simulate a correlation between water and electrical energy quantities. Thus, the proposed method is proven as a useful tool for estimation of the daily electrical energy consumption considering the flow and the pressure growth of th... Autori: Gheorghe Grigoras, Marcel Istrate ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25607
Optimization by NN ? GA technique of the metal complexing process. potential application in wastewater treatment
Environmental Engineering and Management Journal › Vol. 9 › Nr. 2 Abstract
Some samples consisting in silica functionalized in different degrees with dihydroxy-azomethine groups have been tested as sorbents for copper (II) ions from aqueous solutions in different conditions. An indirect monitoring procedure for the complexing process was approached: UV-VIS absorption intensity ? time variation for the metal-containing solution in which complexing silica was soaked. In order to find the conditions in which the maximum efficiency in the metal absorption can b... Autori: Ciprian-George Piuleac, Maria Cazacu, Silvia Curteanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25608
Adaptive neuro-fuzzy approach for sand permeability estimation
Environmental Engineering and Management Journal › Vol. 9 › Nr. 2 Abstract
Characterization of soil permeability is of great importance for several geotechnical analyses. In common practice, because of the difficulty in sampling of granular material, constant head permeability tests are usually employed on specimens having similar relative densities to those in the field. An alternative approach to permeability tests for granular soils is the prediction of permeability levels by means of empirical equations depending on several particle size distribution an... Autori: Alper Sezer, Burak A. Goktepe, Selim Altun ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25609
Validation of a knowledge-based risk model for biological foaming in anaerobic digestion simulation
Environmental Engineering and Management Journal › Vol. 9 › Nr. 2 Abstract
Anaerobic digestion (AD) is a complex biological system which can be affected by several operational problems. Among them, biological foaming is one of the most difficult to deal with. It has many effects, such as causing gas pipe clogging and probe failures, and it can affect mixing devices, etc. Since the mechanisms involved in biological foaming development are not fully understood, it is not included in standard anaerobic digestion models. For this reason, a knowledge-based risk ... Autori: Eric Latrille, Ignasi Rodriguez-Roda, Jean-Philippe Steyer, Joaquim Comas, Jordi Dalmau ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25610
Artificial intelligence applications in the atmospheric environment: status and future trends
Environmental Engineering and Management Journal › Vol. 9 › Nr. 2 Abstract
The Air Quality Management problem calls for detailed, case-specific knowledge and requires, due to legal mandates, the development of operational, environmental parameter related, incident forecasting. Both targets can be met by applying Artificial Intelligence (AI) methods, and by employing relevant computational algorithms that are capable of producing reliable results. The current paper provides with an overview of the problem domain, identifies goals and proposes methods that ma... Autori: Kostas D. Karatzas ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25616
Nitrate removal from aqueous solution using MgCl2 impregnated activated carbon
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
The aim of this study was to assess nitrate removal using impregnated activated carbon (AC) with MgCl2. After impregnating of AC using heat treatment, the MgCl2 is converted to efficient MgO. The denitrification was conducted at pH 6.2, 25?C, and initial concentrations of 20 mg/L nitrate-N. The effects of the operating parameters including AC dosage, pH, and contact time have been investigated. Experimental data show that AC modified by MgCl2 was more effective than virgin AC for nit... Autori: Abbas Rezaee, Hatam Godini, Sahand Jorfi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25618
The characterization and the synthesis of a new coordination compound for removal of Cr(III) from wastewaters
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
The Schiff base N,N??(salicylidene)-methylenediamine, known as Salmen in combination with Cr(III) forms at pH = 4.5 a greenish precipitate, which is stable at room temperature but decomposed on heating. The study of the Infrared spectra, Electron Spin Resonance (ESR), X-ray diffraction and thermogravimetry has pointed out that the precipitation form is a complex, while the molar ratio showed that the combination rate of Cr(III): N,N?-bis(salicylidene)-methylenediamine is 1:1. The new... Autori: Doina Sibiescu, Ioan Roşca, Irina Spatarescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25619
Study on removal of cadmium from aqueous solutions by adsorption on bael tree leaf powder
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
The adsorption behavior of bael tree (BT) leaf powder for cadmium ions from aqueous solutions has been investigated as a function of appropriate equilibrium time, adsorbent dose, adsorbate concentrations and pH using a batch system. Studies showed that the pH of aqueous solutions affected cadmium removal as a result of the fact that removal efficiency increased with increasing solution pH. The maximum adsorption was 93.56% at solution pH equal to 6.0, contact time of 30 min and initi... Autori: Ponnusamy Senthilkumar, Rangasamy Gayathri ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25621
Utilization of two artificial neural network methods in surface water quality modeling
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
Artificial neural networks (ANNs) are capable of learning the relationships between the dependent and predictor surface water quality variables and have a high ability to predict from the new data set. In this study, two different ANN methods, the feedforward network (FFN) and the cascadeforward network (CFN) were applied to predict two surface water quality variables such as chlorophyll-a (Chl-a) and fecal coliform (FC) using twelve other variables as an input to the models. Both me... Autori: Hasan Merdun, Ozer Cinar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25623
Aerobic sequencing batch reactor system with granular activated carbon for the treatment of wastewater containing a reactive dye
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
In this study, the effect of adding granular activated carbon (GAC) to aerobic sequencing batch reactor (SBR) on possibility to treat a wastewater containing a reactive dye (Brill Blue KN-R) was investigated. Experiments were performed in four cylindrical Plexiglas reactors for 68 days (5 days for acclimatization of sludge and 63 days for normal operation in two separate phases). Initial dye concentrations were adjusted to 20, 25, 30 and 40 mg/L in the reactors R1, R2, R3 and R4, res... Autori: Amir Asadi Vaigan, Hossein Hashemi, Mohammad Reza Alavi Moghaddam ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25624
Environmental hazards and anaerobic treatment of wastewaters generated in alcohol industry
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
Finding solutions to the waste problems generated by human activity represents a high concern of authorities and environment specialists for many years. Furthermore, energy conservation and reduction of the dependency from fossil fuels represents a top priority of governmental organizations at world level. The developments in alcohol industry have resulted in the increase of wastewaters which are highly polluted with organic substances, causing environmental pollution hazards. A wide... Autori: Carmen Mateescu, Ionel Constantinescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25626
Chemical - analytical characteristic of marine environmental pollution in the ports of northern Black Sea Basin
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
As a result of the chemical-analytical studies of the marine environment of the water area of some Black Sea ports it was found that the water content of standardized components - toxins do not exceed their maximum allowable concentration, and the corresponding sediment significantly contaminated with cadmium, lead, phenols, petroleum products.... Autori: Anatoliy Andrianov, Eugeniy Malinovsky, Inna Bezlutskaya, Inna Chebotarskaya, Oleg Nedostoup, Tatyana Kovalchuk, Valeriy Antonovich ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25628
Modeling and simulation of an ultrafiltration process for the removal of suspended solids and colloids from wastewater
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
Mathematical modeling of the ultrafiltration (UF) process is motivated by the complexity of retention phenomena that occur during the UF in conjunction with the complexity of wastewater matrices submitted to ultrafiltration, as well as by the need to predict the process behavior in extreme conditions, such as high pollution loads for UF-membrane cleaning cycles optimization or for automated control of the process. Thus, series of laboratory-scale ultrafiltration experiments were perf... Autori: , George Barjoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25630
Chemical oxidation of treated textile effluent by hydrogen peroxide and fenton process
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
In this study the possibility to apply the oxidation process for treating textile effluents, by using hydrogen peroxide and Fenton process was evaluated through determining the color and chemical oxygen demand (COD) removal. The experimental variables studied include the dosages of hydrogen peroxide and iron salts, oxidation time and pH value. The result showed that oxidation process using hydrogen peroxide alone is inefficient in COD and color removal, since only 25 % of COD removal... Autori: Abdelnaser Omran, , Marniyanti Mamat Noor ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25631
Equilibrium and kinetic modeling of Zn (II) sorption from aqueous solutions by sphagnum moss peat
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
Equilibrium and kinetics of sorption of Zn (II) ions from aqueous solutions of pH 5 on indigene (Romanian) peat moss were investigated in batch system. The experimental equilibrium sorption data at three temperatures were analysed by Freundlich, Langmuir, Tempkin and Dubinin-Radushkevich sorption isotherm models. Results indicate the following order in to fit the isotherm equations: Langmuir > Tempkin > Dubinin-Radushkevich > Freundlich. The equilibrium sorption capacity determine... Autori: Angelica Kicsi, Doina Bilba, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25632
Studies on the biosorption of Terasil dye by Aspergillus Niger dead biomass
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
Textile dyeing process is an important source of contamination responsable for the continous pollution of the environment. Control of water pollution has importance for both organisms, which live in water and those who benefit from water. Many dyes reaching the water source are difficult to decompose and cause many problems due to their carcinogenicity. Consequently, it is important to remove these pollutants from wastewater before their final disposal. This paper reports the resuls ... Autori: Alina Dughila, Alina Stefanache, Cornel Pohontu, Igor Creţescu, Mariana Diaconu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25633
Influence of innoculum acclimation in the biodegradation rate and estimated biodegradbility of cow manure, food waste and oil
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
Two different inocula - acclimated and non-acclimated to fat- were used to evaluate the methane production of cow manure, food waste and oily waste in batch assays. The inoculum adapted to fat had a better performance in the methanisation of substrates with significant lipids content. Furthermore, it is demonstrated that an increase in the ratio inoculum/substrate can enhance the initial methane production rate of oily waste when using a non-adapted inoculum, improving also the ultim... Autori: Lucia Neves, Maria Madalena Alves, Raquel Ferreira, Rosario Oliveira ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25634
Olive mill wastewater as a renewable resource
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
The olive mill wastewater (OMW) is a stable emulsion composed by water, olive pulp and residual oil. An approach for using this waste as a renewable resource is of greater interest. Several authors have been studding physicochemical treatment methods. However, the biological treatments allow not only the treatment, but also the effluent valorization, by producing several valuable products. This effluent is also a source of natural antioxidants and its extraction is economically attra... Autori: Carina Pereira, Cristiana Goncalves, Isabel Belo, Madalena Alves ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25635
Environmental Engineering and Management Journal, Vol. 9 Nr. 5
Environmental Engineering and Management Journal › Vol. 9 › Nr. 5 ? SUSTAINABLE CONCRETE HARDENING PROCESSES IN NORMAL CLIMATIC AND THERMAL TREATMENT CONDITIONS
? THE ENVIRONMENTAL DIMENSION ? AN INTERDISCIPLINARY RESEARCH AREA
? MENU PLANNING STRATEGY BASED ON ECOLOGICAL FOOTPRINT
? EVALUATING ENVIRONMENTAL IMPACT OF NIGERIAN COMPOSTED WASTES USING LABORATORY EXTRACTION TEST
? IN SITU RADIOFREQUENCY FIELD LEVEL ASSESSMENT IN TWO URBAN AREAS IN ROMANIA: OPEN QUESTIONS TO ELECTROMAGNETIC POLLUTION
? INNOVATIVE SOLUTION FOR WARNING ON HI... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25657
Environmental Engineering and Management Journal, Vol. 9 Nr. 4
Environmental Engineering and Management Journal › Vol. 9 › Nr. 4 ? POLLUTION PREVENTION, A KEY TO ECONOMIC AND ENVIRONMENTAL SUSTAINABILITY
? A COMPARISON BETWEEN DIFFERENT SCENARIOS OF ROMANIAN MUNICIPAL SOLID WASTE TREATMENT BEFORE LANDFILLING
? A STUDY ON ENERGY CONSUMPTION IN ROMANIA
? ENVIRONMENTAL INFLUENCES ON STRESSED METALLIC SURFACES
? ASPECTS OF HYDRODYNAMICS AND MASS TRANSFER IN DIFFUSED AERATION SYSTEMS
? THE STATUS OF SOME SELECTED HEAVY METALS IN ROADSIDE SOILS OF BURSA PROVINCE, TURKEY
? PREPARATION AND CHARACTERI... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25656
Environmental Engineering and Management Journal, Vol. 9 Nr. 6
Environmental Engineering and Management Journal › Vol. 9 › Nr. 6 ? RESEARCH ON NaCl SALINE AEROSOLS I. NATURAL AND ARTIFICIAL SOURCES AND THEIR IMPLICATIONS
? DECISION SUPPORT MODELS FOR SOLID WASTE MANAGEMENT ? AN OVERVIEW
? POLICY AND STRATEGY FOR IMPROVING SUSTAINABLE SOCIAL DEVELOPMENT PROGRAMMES
? APPLICATION
OF SHALLOW POND SYSTEM USING WATER HYACINTH FOR DOMESTIC WASTEWATER
TREATMENT IN THE PRESENCE OF HIGH TOTAL DISSOLVED SOLIDS (TDS) AND HEAVY
METAL SALTS
? TRENDS OF THE COMMUNITARIAN COHESION POLICIES AND ADVERTISING FOR EC... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25658
Environmental Engineering and Management Journal, Vol. 9 Nr. 7
Environmental Engineering and Management Journal › Vol. 9 › Nr. 7 ? MUNICIPAL SOLID WASTE LANDFILLING AND TREATMENT OF RESULTING LIQUID EFFLUENTS
? ROMANIA: ENTREPRENEURIAL VALUES AND SUSTAINABILITY
? THE COMPRESSIVE STRENGTH OF WOODEN BRIQUETTES USED AS RENEWABLE FUEL
? ECO-FRIENDLY EXTRACTION AND SEPARATION METHODS OF CAPSAICINES
? ADDRESSING ISSUES OF GEOENVIRONMENTAL RISKS IN DOBRUJA, ROMANIA/BULGARIA
? ADSORPTION OF 2,4-DINITROPHENOL AND 2,6-DINITROPHENOL ONTO ORGANOCLAYS AND INORGANIC-ORGANIC PILLARED CLAYS
? APPLICATION
O... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25659
Environmental Engineering and Management Journal, Vol. 9 Nr. 8
Environmental Engineering and Management Journal › Vol. 9 › Nr. 8 ? GREEN SYNTHESIS OF SYMMETRICAL CARBONATE FT-IR STUDY
? SINTERED BASALT AS A PROMISING SUSTAINABLE MATERIAL IN MECHANICAL ENGINEERING
? DESIGN OF BUILDINGS INCLUDING ENVIRONMENTAL IMPACT
? ANALYSIS METHODS FOR PYRAZINE-2,3-DICARBOXYLIC ACID SYNTHESIZED USING ELECTROCHEMICALLY REGENERATED KMnO4
? RESEARCH ON NaCl SALINE AEROSOLS II. NEW ARTIFICIAL HALOCHAMBER CHARACTERISTICS
? DETERMINATION OF AEROSOLS POLLUTANTS ON MEMBRANES. 1. MEMBRANES PREPARATION AND CHARACTERIZATIO... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25660
Environmental Engineering and Management Journal, Vol. 9 Nr. 9
Environmental Engineering and Management Journal › Vol. 9 › Nr. 9 ? STUDY OF BIODIESEL PRODUCTION FROM OILSEED PLANTS II. EVALUATION OF BIODISEL PRODUCTION FROM SOME CULTIVARS OF RAPES
? STUDY
OF BIODIESEL PRODUCTION FROM OILSEED PLANTS I. EVALUATION OF THE
GENETIC SIMILARITY OF SOME Brassica Napus CULTIVARS USING RAPD MARKERS
? STRUCTURAL CHARACTERIZATION AND IN VITRO CYTOTOXIC POTENTIAL OF COAL DUST IN A ROMANIAN POWER PLANT
? MUNICIPAL SOLID WASTE MANAGEMENT IN BENGHAZI (LIBYA): CURRENT PRACTICES AND CHALLENGES
? COMPARATIVE ENVIRONM... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25661
Environmental Engineering and Management Journal, Vol. 9 Nr. 10
Environmental Engineering and Management Journal › Vol. 9 › Nr. 10 ? AN ASSESSMENT OF OPERATIONAL PARAMETERS FOR THE REMOVAL OF CHLOROPHENOLS FROM WASTEWATER
? ENVIRONMENTAL SCIENCES: A PSYCHOLOGICAL-BEHAVIORAL MODEL FOR RESEARCHERS
? ECOLOGICAL
AGRICULTURE: DYNAMICS OF THE BIOLOGICAL ACTIVITIES IN SOILS CULTIVATED
WITH MAIZE UNDER THE INFLUENCE OF ORGANIC FERTILIZATION
? SOLAR-ASSISTED JOULE-BRAYTON ENGINES USED TO REDUCE CARBON DIOXIDE EMISSIONS
? STUDY OF THE ENVIRONMENTAL EFFECTS OF HEATING SYSTEMS
? MIXED JET-VORTEX METHOD FOR ... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25662
Environmental Engineering and Management Journal, Vol. 9 Nr. 11
Environmental Engineering and Management Journal › Vol. 9 › Nr. 11 ? COMPARATIVE CONSIDERATIONS ON THE STRUCTURE OF SOME MOLYBDENUM/NIOBIUM DOUBLE PEROVSKITES OXIDES
? THE INFLUENCE OF THE STORAGE TIME ON THE STABILITY OF BUTTER
? CaCO3 CONTROLLABLE SYNTHESIS BY DOUBLE EXCHANGE METHOD USING CaCl2 RESIDUAL SOLUTIONS
? OPTIMIZATION OF COAGULATION-FLOCCULATION IN THE TREATMENT OF CANAL WATER
? ANODIC DETERMINATION OF PENTACHLOROPHENOL FROM WATER USING CARBON NANOFIBER-BASED COMPOSITE ELECTRODE
? STUDY OF PRECIPITATES GROWTH IN COAGULATION ... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25663
Environmental Engineering and Management Journal, Vol. 9 Nr. 12
Environmental Engineering and Management Journal › Vol. 9 › Nr. 12 ? POST-DARCY FILTRATION THROUGH RIGID PERMEABLE MEDIA
? BIOSORPTION OF Cr(VI) FROM AQUEOUS SOLUTIONS ONTO Hydrilla verticillata WEED: EQUILIBRIUM, KINETICS AND THERMODYNAMIC STUDIES
? IMPACT OF BUILDING A TIDAL GATE ON THE YONGJIANG RIVER IN CHINA
? MONITORING OF THE HYDROTECHNICAL TORRENT CONTROL STRUCTURES: A STATISTICAL APPROACH
? RESEARCH ON SOIL PROPERTIES CONSERVATION DURING THE PREPARATION OF GERMINATION BEDS IN GREENHOUSES
? MANAGEMENT OF THE POTATO CROPS FOR MIN... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25664
Environmental Engineering and Management Journal, Vol. 10 Nr. 1
Environmental Engineering and Management Journal › Vol. 10 › Nr. 1 ? COMPACT MICROPULSE BACKSCATTER LIDAR: AIRBORNE AND GROUND-BASED APPLICATIONS
? STUDIES OF THE IMPACT OF AEROSOL OPTICAL PROPERTIES ON CLIMATE CHANGE PROCESSES
? A STUDY OF THE AEROSOL OPTICAL PROPERTIES AT TWO AERONET STATIONS FROM ROMANIA
? COMPLEMENTARY ATMOSPHERIC URBAN POLLUTION STUDIES IN THE NORTH-EAST REGION OF ROMANIA, IASI COUNTY
? ?NGSTR?M TURBIDITY IN THE LOWER LAYERS OF THE TROPOSPHERE
? LIDAR MONITORING OF ANTHROPOGENIC POLLUTION AND NATURAL PHENOMENA
... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25665
Environmental Engineering and Management Journal, Vol. 10 Nr. 2
Environmental Engineering and Management Journal › Vol. 10 › Nr. 2 ? Environmental Engineering and Management Journal, Vol. 9 Nr. 4
? THE PROTECTION OF EQUIPMENTS USING VOLATILE INHIBITORS
? CONTINUOUS SURFACE TEMPERATURE MONITORING TO ESTIMATE SENSIBLE HEAT LOSS BY BUILDING FINISHES
? RECYCLE OF POLYAMIDE DYEING WASTEWATER FOLLOWING DECOLORIZATION WITH POLYMERIC SORBENTS
? PERFORMANCE EVALUATION OF AMINO ACID SALT-BASED COMPLEX ABSORBENTS FOR CO2 CAPTURE
? ADSORPTION EQUILIBRIUM STUDIES ON COPPER (II) IONS REMOVAL BY NATURAL WASTE USIN... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25666
Environmental Engineering and Management Journal, Vol. 10 Nr. 4
Environmental Engineering and Management Journal › Vol. 10 › Nr. 4 ? EFFECT OF ELECTRICAL CURRENT ON H2/ H2O2 GENERATION IN NON-THERMAL PLASMA GLIDING ARC REACTORS
? ADVANCES IN THE VISUALIZATION OF THREE-DIMENSIONAL SEISMIC VOLUME DATA
? CHARACTERIZATION OF ELECTROMAGNETIC RADIATION FROM A PATIENT MONITOR
? METHODS OF ELECTROMAGNETIC INTERFERENCE REDUCTION IN ELECTROCARDIOGRAPHIC SIGNAL ACQUISITION
? SPHERICAL MODEL OF THE HUMAN HEAD EXPOSED TO ELECTROMAGNETIC FIELD
? BRAIN ELECTRICAL ACTIVITY RECORDING IN SOME ELECTROMAGNETIC ENVIRONM... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25667
Environmental Engineering and Management Journal, Vol. 10 Nr. 5
Environmental Engineering and Management Journal › Vol. 10 › Nr. 5 ? HYDROGEL MICROSPHERES BASED ON ENVIRONMENTALLY FRIENDLY POLYMERS WITH POTENTIAL BIOMEDICAL APPLICATIONS
? STUDY ON THE MIXING EFFICIENCY IN A BASKET BIOREACTOR WITH IMMOBILIZED YEASTS CELLS
? MANAGEMENT OF WASTE FROM ELECTRICAL AND ELECTRONIC EQUIPMENT IN CYPRUS ? A CASE STUDY
? SEPARATION AND CHARACTERIZATION OF ANTHOCYANINS BY ANALYTICAL AND ELECTROCHEMICAL METHODS
? AN INTEGRATED DECISION AID FOR IDENTIFYING AND PRIORITIZING STRATEGIES IN FOREST MANAGEMENT
? INFLUEN... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25668
Environmental Engineering and Management Journal, Vol. 10 Nr. 3
Environmental Engineering and Management Journal › Vol. 10 › Nr. 3 ? ADSORPTION OF DYE FROM AQUEOUS SOLUTION USING SILVER WOOD SAWDUST CARBON
? TIME SERIES ANALYSIS OF THE HEAVY METALS LOADED WASTEWATERS RESULTED FROM CHROMIUM ELECTROPLATING PROCESS
? WATER QUALITY CHARACTERIZATION OF THE PRUT RIVER
? ETHICAL AND SUSTAINABLE EDUCATION OF ENVIRONMENTAL ENGINEERS - BETWEEN REALITY AND HOPE
? INTERACTIONS AMONG CLIMATE, VEGETATION AND SOILS IN RADUCANENI ? IASI AREA
? DISTRIBUTION OF MIXING INTENSITY OF OXYGEN-VECTOR DISPERSIONS IN AERATED... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25669
BIOSORPTION OF LEAD FROM AQUEOUS SOLUTION BY USING CHEMICALLY TREATED Saccharomyces cerevisiae
Environmental Engineering and Management Journal › Vol. 10 › Nr. 6 Biosorption of lead (II) onto the biosorbent, represented by untreated S. cerevisiae and NaOH-treated S. cerevisiae was examined and the effects of contact time were investigated. The lead (II) biosorption was fast and equilibrium was attained within 90 mins. The maximum removal ratios of lead (II) for untreated S. cerevisiae and NaOH-treated S. cerevisiae after 3 h were 48.6% and 92.5%, respectively, with initial lead (II) concentration of 40 mg/L and optimum pH of 5.0. Data obtained from batch... Autori: Ying Zhang, Yingjie Dai, Baiyin Liu, Fang Ma, Ru Zheng, Limin Donghttp://www.ecozone.ro/reviste.php?RID=25670
NUMERICAL SIMULATION OF HEAT TRANSFER IN DIRECTIONAL SOLIDIFICATION PROCESS FOR POLYCRYSTALLINE SILICON
Environmental Engineering and Management Journal › Vol. 10 › Nr. 6 Temperature distribution in the vacuum directional solidification system influenced seriously on the impurities concentration andmicrostructure in Polycrystalline Silicon. In this study, a numerical model for the transient global heat transfer for directionsolidification process has been developed by the finite element method (FEM). A two-dimension numerical simulation fortemperature distribution of directional solidification process was carried out using software Multi-physics Comsol 3.5a. Ther... Autori: Guoqiang Lv, Wenhui Ma, Hua Wang, Xiangyang Mei, Kuixian Weihttp://www.ecozone.ro/reviste.php?RID=25671
EFFECT OF STICKING PROBABILITIES ON NUMERICAL SIMULATION OF PARTICLE AGGREGATION IN TWO-DIMENSIONAL SPACE
Environmental Engineering and Management Journal › Vol. 10 › Nr. 6 The main phenomenon of coagulation is that particles aggregate to form floc. The formation of floc and cluster was simulated with computer in two-dimensional space using particle-cluster aggregation model and the properties of floc were analyzed using fractal theory. The effect of sticking probabilities on floc structure, density and porosity were analyzed. With the sticking probability increases, the simulated floc structure is gradually loose, floc density is gradually lower, the porosity is g... Autori: Wanchun Tan, Yunbo Wang, Changbo Jiang, Shiquan Sun, Hong Chen, Xiaobao Niehttp://www.ecozone.ro/reviste.php?RID=25675
THE ESTABLISHMENT OF EIPs-MFA MODEL FOR THE EVALUATION OF MATERIAL METABOLISM EFFICIENCY IN INDUSTRIAL AREAS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 6 Material Flow Analysis (MFA), as a method of Industrial Ecology (IE), is a useful tool to measure and analyze the material metabolism or physical dimensions of a society’s production and consumption at various scales. However, there are different MFA frameworks and points corresponding to different researching scales. This paper proposes to introduce a physical Input- Output Table (PIOT), as means to establish the Eco-industrial parks MFA model (EIPs-MFA) and indicator systems, for analyzing t... Autori: Yao Shi, Rusong Wang, Jingru Liu, Jianxin Yang, Tianzhen Juhttp://www.ecozone.ro/reviste.php?RID=25676
TREND ANALYSIS OF WET DEPOSITION IN NANNING CITY DURING 1991-2004
Environmental Engineering and Management Journal › Vol. 10 › Nr. 6 The variation of acidity and the wet deposition fluxes of rainwater in Nanning City were analyzed based on the local acid rain monitoring data provided by environmental protection authorities from 1991 to 2004. The result shows that the annual value of pH is less than 5.6 in the past 14 years and the wet deposition has been getting more and more severe in Nanning. The ratio of SO42-/NO3 - has decreased. NO3 - has played an increasingly large role in acidity, though SO4 2- remains a key player. T... Autori: Feng-qin Zheng, Guo-liang Liao, Hai-hong Huang, Yu-chun Mo, Shen-xian Wuhttp://www.ecozone.ro/reviste.php?RID=25678
EFFECT OF MICROBIAL ACTIVITY IN THE RHIZOSPHERE OF WETLAND PLANTS ON REMOVAL OF TOTAL ORGANIC CARBON AND NITROGEN FROM WASTEWATER
Environmental Engineering and Management Journal › Vol. 10 › Nr. 6 Rhizobag incubation experiments were conducted to study microbial biomass carbon (MBC), microbial biomass nitrogen (MBN), soil respiration and enzyme activity (urease and phosphatase) in the rhizosphere soil of three different wetland plants and its influence on the removal of total organic carbon (TOC) and total nitrogen (TN). MBC, MBN, soil respiration and enzyme activity were higher in the rhizosphere than in the non-rhizosphere soil of the wetland plants. Microbial activity in the rhizospher... Autori: Defu Xu, Hua Fang, Xianghua Xu, Xiaoli Zhao, Yingxue Lihttp://www.ecozone.ro/reviste.php?RID=25679
PERFORMANCE IMPACT OF LOADING RATE ON A MULTI-STAGE FILTRATION SYSTEM FOR AGRICULTURAL RUNOFF PURIFICATION
Environmental Engineering and Management Journal › Vol. 10 › Nr. 6 A multi-stage filtration system located next to Lushan River in Gaofeng Town of Chongqing, P.R. China was built to indicate the impact of loading rate on agricultural runoff purification performance. The experimental system was proved to be effective in the removal of agricultural non-point source pollutants, and it was adapted to the changes of influent quality and quantity. The average removal rate of chemical oxygen demand (COD), ammonia (NH4 +-N), total nitrogen (TN) and total phosphorus (TP... Autori: Lei Huang, Xu Gao, Wei-dan Xie, Jun-hong Chen, Xiao-xia Ma, Ming-guo Chen, Jin-song Guohttp://www.ecozone.ro/reviste.php?RID=25682
CHEMICAL CHARACTERISTICS OF INHALABLE ATMOSPHERIC AEROSOLS IN URUMQI DURING WINTER
Environmental Engineering and Management Journal › Vol. 10 › Nr. 6 PM10-2.5 and PM2.5 samples were collected from December 2007 to January 2008 at six sampling sites in Urumqi Xinjiang, China. The concentrations of seven kinds of water-soluble ions––SO4 2-, NO3-, Cl-, NH4 +, K+, Na+, and Ca2+––were analyzed using ion chromatography. The concentrations of heavy metal elements, Cr, Co, Cd, Pb, and Hg were measured using inductively coupled plasma mass spectrometry (ICP-MS). The results indicated that, in PM2.5 and PM10-2.5, the average mass concentration ... Autori: Talip Dilnur, Tursun Yalkunjan, Manabu Igawa, Yimit Abulizihttp://www.ecozone.ro/reviste.php?RID=25683
COLONIZATION AND Chlorpyrifos DEGRADATION OF STRAIN Stenotrophomonas acidaminiphila lux-β IN SOIL
Environmental Engineering and Management Journal › Vol. 10 › Nr. 6 A chlorpyrifos-degrading strain of Stenotrophomonas acidaminiphila, lux-β was chosen for research object, and the survival and chlorpyrifos-degrading activity of strain lux-β in the soil with different treatments have been investigated in this study, so as to provide technique support for monitoring the colonization and degrading activity of chlorpyrifos-degrading bacteria in natural environment. The result indicated that the quantity of lux-β in the soil rose first and decreased ... Autori: Dao-Sheng Wang, Ri-Mao Hua, Xin-Yun Tang, Rui-Xue Li, Jun Zhang, Yun-Lu Wanghttp://www.ecozone.ro/reviste.php?RID=25684
ELECTROCHEMICAL TREATMENT OF MUSTARD WASTEWATER USING CARBON PAPER ELECTRODE
Environmental Engineering and Management Journal › Vol. 10 › Nr. 6 Treatment of mustard wastewater with high salinity and organic concentration by electrochemical degradation was studied. The influence of the critical parameters of electro-oxidation such as pH, current density, salt concentration and energy consumption on the removal efficiency of COD and NH3-N was studied using porous carbon electrode. It was found that the COD and NH3-N removal efficiency could be enhanced by increasing pH, current density and salt concentration. The current density of 0.032A... Autori: Hainan Ai, Qiang He, Hongxiang Chai, Xuebin Hu, Tengrui Longhttp://www.ecozone.ro/reviste.php?RID=25685
PYRITE SURFACE CORROSION ENHANCED BY ATTACHMENT OF Acidithiobacillus ferrooxidans: COMPARISON WITH ABIOTIC OXIDATION
Environmental Engineering and Management Journal › Vol. 10 › Nr. 6 Acidithiobacillus ferrooxidans plays an important role in the pyrite oxidation process and has been widely studied in order to determine the kinetics of the reactions, but the details of the oxidation processes on the surface of pyrite keeps poorly known. In this study, the bio-oxidation process of pyrite by Acidithiobacillus ferrooxidans was studied by comparing with abiotic oxidation by Fe3+. The attachment of Acidithiobacillus ferrooxidans on pyrite surface was found by using Scanning Electro... Autori: Lei Jiang, Huiqun Yang, Yuruo Tao, Jinyan Yanghttp://www.ecozone.ro/reviste.php?RID=25686
CORRELATION OF MICROCYSTINS AND WATER ENVIRONMENT FACTORS IN MIYUN RESERVOIR OF BEIJING, CHINA
Environmental Engineering and Management Journal › Vol. 10 › Nr. 6 Our investigation in 2007 revealed that the concentration of microcystin (MC-LR) in Miyun reservoir was 0.224 μg L-1, below the safety limit of surface drinking water in China (1.0 μg L-1). The phytoplankton community in Miyun reservoir was composed of 8 divisions and 84 species (including genera and varieties). The density of phytoplangkton was 393.71?—104 cells L-1 including 24.6% of Chlorophyta, 32.5% of Cyanophyta and 15.3% of Bacillariophyta. The toxin-producing cyanobacteria incl... Autori: Huimin Li, Guisen Du, Yumei Wu, Dianwei Wu, Jingshi Wanghttp://www.ecozone.ro/reviste.php?RID=25691
INFLUENCE OF DISINFECTION WITH CHLORINE DIOXIDE ON DISSOLVED ORGANIC MATTER AND BIOLOGICAL TOXICITY OF URBAN WASTEWATER
Environmental Engineering and Management Journal › Vol. 10 › Nr. 7 Chlorine dioxide (ClO2) is widely used as disinfectant in tertiary sewage treatment process. In order to identify the impact of disinfection with ClO2 on treated water quality, secondary effluent pretreated by coagulation was disinfected by ClO2, and the characteristic of dissolved organic matter (DOM) and the biological toxicity of the water before and after disinfection were investigated. The results showed that ClO2 could remove part of DOM and the removal rate of hydrophobic (HO) component b... Autori: Lihua Cheng, Xuejun Bi, Aihua He, Changqing Liu, Qi Wang, Zuliang Liaohttp://www.ecozone.ro/reviste.php?RID=25692
RESEARCH OF MEMBRANE FOULING PERFORMANCE IN A SUBMERGED DOUBLE-SHAFT ROTARY ANAEROBIC MEMBRANE BIOREACTOR
Environmental Engineering and Management Journal › Vol. 10 › Nr. 7 Considering the membrane fouling problem in submerged anaerobic membrane bioreactors, a set of submerged double-shaft rotary anaerobic membrane bioreactor (SDRAnMBR) was constructed by applying a double-shaft rotary module to submerged anaerobic bioreactor, and the theoretic analysis of the characteristics of hydraulics dynamics in SDRAnMBR has been performed. The membrane fouling performance for treatment of synthetic brewery wastewater was investigated by SDRAnMBR. The results of a theoretical... Autori: Ling Bai, Chao Liu, Weiguang Lanhttp://www.ecozone.ro/reviste.php?RID=25694
ADSORPTION OF Cr(VI) ON Fe-Ni MODIFIED BENTONITES
Environmental Engineering and Management Journal › Vol. 10 › Nr. 7 A series of sodium bentonites as raw material were prepared to the modified inorganic iron-nickel montmorillonites and organic composite montmorillonites. The structural characterization and morphology of the iron-nickel crosslinked modified bentonites were observed by means of IR spectroscopy, X-ray diffraction, scanning electron microscopy. The effects of the amount of bentonites, adsorption time and pH change on the adsorption of Cr(VI) have also been studied. The results indicated that the a... Autori: Shao Hong, Cao Ninghttp://www.ecozone.ro/reviste.php?RID=25695
SCREENING AND BIOLOGICAL CHARACTERISTICS OF A MANGANESE TOLERANT MICROORGANISM
Environmental Engineering and Management Journal › Vol. 10 › Nr. 7 Ecological adaptation of heavy metal polluted environments is significantly enhanced through plants inoculated with plant growth-promoting bacteria (PGPB), and the cost of phytostabilization in metal tailings can be reduced. On the basis of the systematic investigation of manganese tolerant plants which grew on Xiangtan manganese tailings, rhizosphere soils of th Chenopodium album Linn. were collected. One yellow manganese-resistant strain named XZL01 was isolated from the rhizosphere of fresh p... Autori: Shengguo Xue, Yameng Ma, Xiaohua Zhou, Xiyan Zhou, Fenghao Liuhttp://www.ecozone.ro/reviste.php?RID=25696
PERFORMANCE OF MEMBRANE BIOREACTOR (MBR) PROCESS TREATING WASTEWATER CONTAINING DIFFERENT CONTENT OF SEAWATER
Environmental Engineering and Management Journal › Vol. 10 › Nr. 7 A submerged membrane bioreactor (MBR) was employed to treat wastewater containing different content of seawater in this work. During the process, the operating conditions were as follows: COD was 800-1000 mg/L, ammonium-N was 80-100 mg/L, pH was 7.5-8.5, mixed liquor suspended solids (MLSS) was around 7000 mg/L, dissolved oxygen (DO) was 2-4 mg/L. The results showed that the ammonium-N removal was better than COD removal. Sludge settling property was good in saline wastewater treatment, and the ... Autori: Jin Li, Deshuang Yu, Dan Wanghttp://www.ecozone.ro/reviste.php?RID=25697
SOLUBILITY AND SORPTION BEHAVIOR OF NAPHTHALENE ON SEDIMENTS IN THE PRESENCE OF DISSOLVED ORGANIC ACID
Environmental Engineering and Management Journal › Vol. 10 › Nr. 7 The solubility and sorption behavior of naphthalene in the presence of dissolved organic acid was studied. The presence of dissolved organic acids at lower concentrations had only a little effect on naphthalene sorption. However, when the concentration exceeds a certain concentration, a significant inhibition was observed. Moreover, the inhibition enhanced with the increasing concentrations of dissolved organic acids. The change trend on solubility is similar to the sorption of naphthalene, that... Autori: Jin hua Li, Bao xue Zhou, Qing Zheng, Wei min Caihttp://www.ecozone.ro/reviste.php?RID=25698
PREPARATION AND CHARACTERIZATION OF CALCIUM ZINCATE SYNTHESIZED BY MICROWAVE METHOD
Environmental Engineering and Management Journal › Vol. 10 › Nr. 7 Calcium zincate as an active material in Zn/Ni secondary battery has been successfully synthesized by microwave method. The sample was characterized by X-ray diffraction (XRD), thermogravimetric analysis, scanning electron microscope (SEM), chargedischarge test (CT) and cyclic voltammetry (CV) analysis. The results show that the chemical composition of sample is Ca(OH)2·2Zn(OH)2·2H2O with regular spherical shapes. The results from CV and CT measurement indicate that the battery has very high d... Autori: Mengliang Tong, Xuanyan Liuhttp://www.ecozone.ro/reviste.php?RID=25700
TRANSFORMATION AND FLUORESCENCE SPECTROSCOPY OF DISSOLVED ORGANIC MATTER (DOM) IN LANDFILL LEACHATE TREATED BY COMBINED PROCESS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 7 The paper analyses the removal efficiency and fluorescence spectroscopic characterization of landfill leachate dissolved organic matter (DOM) fractions in the combined stripping, fenton oxidation, sequence batch reactor, and coagulation process. The high contents of DOM of landfill leachate in each process unit were fractionated into HA, FA, and HyI. The result was the combined process availability for effective removal of DOM fractions. The removal rates for DOM, HA, FA and HyI were 91.9%, 97.1... Autori: Zhiping Liu, Jin-song Guo, Fang Fanghttp://www.ecozone.ro/reviste.php?RID=25702
INFLUENCE OF THE Nocardia sp. C-14-1 REMEDIATION ON THE GROWTH OF POTTED PLANTS IN CONTAMINATED SOIL AND ON MICROORGANISM BIO-DIVERSITY
Environmental Engineering and Management Journal › Vol. 10 › Nr. 7 The combination method of culture and PCR-DGGE technique is applied for a preliminary study of the diversity of the different contaminated soil. The bacteria DNA of the soil was extracted and used for PCR-DGGE analysis. The results show the plant height, total weight and florescence of two tested plant, inhibited by adding phenol or hexadecane in the soil. There are significant differences between test groups which add contaminants and control group, and no significant differences between test g... Autori: Hai-Juan Ma, Guang-Ming Li, Ya-Lei Zhang, Ping Fanghttp://www.ecozone.ro/reviste.php?RID=25706
DEVELOPMENT OF MUNICIPAL SOLID WASTE MANAGEMENT PRACTICES IN DIFFERENT GEOGRAPHICAL UNITS AND URBAN SYSTEMS IN CHINA
Environmental Engineering and Management Journal › Vol. 10 › Nr. 7 On the basis of spot investigation of dozens of cities and hundreds of towns and villages in different regions in China, combining with the fundamental methods of municipal solid waste management (MSWM), three development modes of MSWM were proposed according to the land area, economic level, nature condition and population distribution of various geographical units and urban systems. They were respectively for the city/district system, the city/town (district)/village system and the city/ count... Autori: Haibin Chen, Li Zhang, Jingcheng Zhou, Yang Huhttp://www.ecozone.ro/reviste.php?RID=25707
QUANTIFYING THE BENEFICIAL EFFECT OF DIFFERENT PLANT SPECIES ON AIR QUALITY IMPROVEMENT
Environmental Engineering and Management Journal › Vol. 10 › Nr. 7 The beneficial effect of urban plants in improving air quality is often mentioned in literature but is seldom quantified and valuated. Quantification and valuation of the benefits provided by urban plants allow direct comparison between plant species and help make more informed urban planning decisions. Based on fieldwork study and data processing, carbon dioxide (CO2) sequestration, oxygen (O2) generation, transpiration cooling, sulfur dioxide (SO2) removal and dust interception are quantified ... Autori: Qijiao Xie, Zhixiang Zhou, Fang Chenhttp://www.ecozone.ro/reviste.php?RID=25710
HORIZONTAL AXIS WIND MICROTURBINES WITH POWER OF 10 KW
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 Abstract:Under the circumstances of the deficit in total energetic resources of the Republic of Moldova, non-traditional sources as wind,solar and hydraulic energies are very opportune. Concurrently with the conventional energy resources (fossil fuels, atomic energyetc.), wind energy begins to regain its positions not only from ecological, but also from economical point of view. Also, the windenergy conversion systems could play a significant role in the production of mechanical, electrical ener... Autori: Anatol Sochireanu, Ciupercă Rodion, Ion Bodnariuc, Ion Bostan, Ion Dicusară, Ion Sobor, Iulian Malcoci, Marin Guţu, Nicolae Trifan, Oleg Ciobanu, Radu Ciobanu, Radu Crudu, Valeriu Dulgheru, Viorel Bostan, Vitalie Gladîş ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25717
ALGORITHM FOR LIFETIME ESTIMATION OF BATTERIES BASED ON VOLTAGE DISTRIBUTION SHAPE
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 Abstract:In spite of the large use of batteries throughout the years, both in photovoltaic systems and in other uses, there are still nocomprehensive analyses in ageing studies and, when they exist, statistics turn out to be limited. In this sense, this macro-grid is aunique experience, since the experiment is already composed of 1600 identical stand-alone photovoltaic systems and almost 10years of data taking on 10 minute interval for the main magnitudes.In this paper, it is proposed a method f... Autori: Angeles López Agüera, Daniel Rey Rey, Iago Rodriguez Cabo ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25718
PERFORMANCE STUDY OF SOLAR DRYER FOR AGRICULTURAL AND MARINE PRODUCTS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 Abstract:In the current work design and mathematical description of thermal performance analysis of solar dryer for agricultural andmarine products is presented. Proposed solar dryer includes two main subunits: 1) Solar PV-Thermal dehydrator (heat transferfluid is air), which is used as heat source for dryer; 2) Drying cabin with multistage trays. The pilot unit of proposed systemdeveloped in Renewable Energy Department of Physics Faculty of University of Santiago de Compostela. Investigations o... Autori: Angeles López Agüera, Daniel Rey Rey, E. Virites Montes, Iago Rodriguez Cabo, Jasurjon S. Akhatov, Vicente Gándara ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25719
PHOTODEGRADATION PROCESSES FOR ADVANCED TREATMENT OF INDUSTRIAL WASTEWATERS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 Abstract:The textile industry uses high quantities of water which in many cases are disposed to the environment with inadequate treatment.In this work the effluents from the polyamide textile industry containing Bemacid Gelb, Bemacid Rot and Bemacid Blau weretreated by heterogeneous photodegradation. Treatment performances have been evaluated in terms of conductivity, turbidity, totaldissolved solids (TSD), chemical oxygen demand (COD), total organic carbon (TOC), biochemical oxygen demand (BOD5... Autori: Luminita Andronic ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25720
PREDICTION OF TiO2 AND WO3 NANOPOWDERS SURFACE CHARGE BY THE EVALUATION OF POINT OF ZERO CHARGE (PZC)
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 Abstract:Point of zero charge (PZC) is defined as the condition at which the surface charge density of a material equals to zero and, formost of the solids it is strongly pH dependent. The PZC can be controlled by tuning the solid surface properties (crystallinestructure, morphology) and by a proper environment control, thus it is important to evaluate the PZC for a certain type of material,in given working conditions, for enhancing the efficiency in the targeted application (e.g. layer by layer... Autori: Laura Maria Bertus, Radu Adrian Carcel ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25721
DETERMINATION OF AROMATIC VOLATILE COMPOUNDS IN PETROCHEMICAL WASTEWATER
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 Abstract:A method based on headspace and capillary gas chromatography with flame ionization detector technique was validated for thesimultaneous determination of five individual aromatic volatile pollutants: benzene, toluene, ethylbenzene, m/p-xylene and oxylene.The validation took in consideration liniarity, accuracy, precision, limit of detection, limit of quantification anduncertainty estimation criteria and concluded that the proposed method is suitable to determine the pollutants of interes... Autori: Camelia Draghici, Elena Paunescu, Elisabeta Chirilă, Gabriela Stanciu, Simona Dobrinas ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25729
EXPERIMENTAL RESEARCH ON TRANSIENT REGIMES OF SOLAR AIR HEAT COLLECTORS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 Abstract:The operation of solar air heat collectors consists in a sequence of transient regimes, being conditioned by the availability in timeof the solar resource. This paper presents the results of an experimental research on transient regimes of two types of solar air heatcollectors. The absorbers of the collectors have different configurations and are made of different materials. One collector is acommercial passage air collector with the absorber made of aluminum. The other collector is an ... Autori: Adrian Ciocănea, Andrei Dragomirescu, Sanda Budea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25731
DESIGN OF THE SUSTAINABLE URBAN VEHICLES - NEW CONCEPTS FOR PHOTOVOLTAIC INTEGRATED SOLUTIONS IN AUTOMOTIVE
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 Abstract:The demand for new and high performance products in the automotive industry is increasing exponentially and this trend imposesinnovative concepts for cars. The future solutions for the automotive industry may find their answer in the fabricationtechnologies and also in alternative propulsion and energy production.The car design field cannot ignore the global economic crisis, imposing new approaches in terms of materials and cost effectivetechnologies and by the means of environmental pr... Autori: Mihai Comşiţ ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25733
WIRELESS SYSTEM FOR MONITORING THE SOLAR RADIATION
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 Abstract:The article presents a method of monitoring the solar radiation components taking into consideration the isotropic model. Thewireless solar radiation monitoring system developed is innovative and original in comparison with the systems already availableon the market. The use of the wireless device, of the rechargeable batteries, of the sensors used for measuring the solar radiationcomponents and the temperature make this system an autonomous and a portable one. An experimental prototype... Autori: Cornel Samoila, Daniel T. Cotfas, Doru Ursutiu, Paul Borza, Petru A. Cotfas ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25735
4-BAR GEARED LINKAGE USED FOR PHOTOVOLTAIC AZIMUTH ORIENTATION
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 Abstract:In order to capture as much solar energy as possible, the photovoltaic converter has to follow the sun movement during a day; thiscan be achieved by a tracking system. Most tracking systems have complex and costly structures that can provide wide anglevariations. This paper presents a geared linkage that is build up by a planetary system of gears fitted on a linkage, and thus helpsin reaching wide angles. Starting from a patented linkage, which reaches ≈200° angular strokes, by a... Autori: Dorin Diaconescu, Ioana Hermenean, Nora Creanga ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25736
HYDRAULIC ASPECTS OF SCALING IN GEOTHERMAL ENERGY SYSTEMS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 Abstract:The European countries have few fossil fuel reserves and the main goal of the Lisbon strategy is to promote the utilization ofrenewable energy sources. In Hungary, because of the huge amount of thermal water reserves, geothermal energy might be one ofthe energy sources which can help to raise the share of renewables in the energy market of the country. Beside the positive aspectsthe use of thermal water for energy purposes have some important physical, environmental and economical aspec... Autori: Ferenc Kalmár, Imre Csáki ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25738
REUSE OF PET WASTE AS THERMOPLASTIC COMPOSITES
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 Abstract:Composite manufacturing from plastic wastes of polyethylene terephthalate (PET) type, sand-blasting represents a materialrecovery of the wastes. This process can be achieved, with the purpose of reducing the material consumption which is in deficit,production costs, and the duration of the technological processes.Thermoplastics composites obtained by a melting process at 170-200 oC, wastes incorporation and solidification in forms replacesuccessfully the thermo rigid composites obtained... Autori: Ioan Ropotă, Marcela Muntean, Mihai Bratu, Ovidiu Dumitrescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25741
SUSTAINABLE ENVIRONMENTAL DEVELOPMENT IN THE MINING INDUSTRY APPLIED FOR GORJ COUNTY, ROMANIA
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 Abstract:The national legal framework harmonization, including in areas concerning environmental protection, with the Europeanstandards in the field, is a goal of paramount importance with regard to Romania's accession to the EU structures. From thisperspective, all the organizations, agencies and individuals operating in this field must be acquainted with the European Union'sprograms of environmental action.In this context, the paper aims to provide an overview of the relevant trends and develo... Autori: Constanţa Enea, Constantin Enea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25742
INFLUENCE OF PRECURSOR COMPOSITION ON OPTOELECTRIC AND PHOTOCATALYTIC PROPERTIES OF TIO2 AND WO3 FILMS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 Abstract:The paper presents the influence of different WO3:TiO2 ratios on the photocatalytic and photoelectrolytic properties of the films.The investigations are focused on the morphological (Atomic Force Microscopy, Contact angle), compositional (X-raydiffraction), optoelectric (conductivity, photocurrent) and photocatalytic properties of titanium dioxide films mixed with tungstenoxide. The most important application of these layers is in wastewater purification and hydrogen production using ap... Autori: Alexandru Enesca ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25743
APPLICATION OF SOLAR DRYING TECHNOLOGIES FOR BIOLOGICAL PRODUCTS CONSERVATION
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 Abstract:The drying of biological materials plays an important role in influencing energy savings, quality of end-products and alsoenvironmental issues. Several new approaches in application of solar dryers and a great number of biological materials have beendeveloped. In the paper the background of solar drying, current solar drying arrangements, and some of the recently focusedbiological products such as grain, fruit, vegetable etc. are selected and discussed. Additionally an integrated energy... Autori: Istvan Farkas ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25745
STUDY ON ENERGY RESOURCES INTEGRATION AND SUSTAINABILITY OF THE NEW MODULAR AGRICULTURE PATTERN
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 Abstract:The paper aims to present the new pattern of modular agriculture, as evolution of agri-food production in the coming decades aswell as to highlight the direct relation between this pattern and the massive energy support it requires.The paper basically deals with reactions to climate change, reductions of carbon emission, in addition to high quality and safetyrequirements for food production. The author envisages the PAC measures called for in order to ensure a sustainable developmentof ... Autori: Romulus Gruia ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25746
STEP-TRACKING PROGRAM SYNTHESIS OF AN AZIMUTH TRACKED CONCENTRATING PHOTOVOLTAIC (CPV) SYSTEM
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:For the optimal working of the concentrating photovoltaic systems (CPV), these are usually tracked, and the accuracy required infollowing the sun path is much higher than in non-concentrating system. The paper focuses on the synthesis of the optimal steptracking program of an azimuth tracking system, used for accurate tracking of a CPV system. The paper presents the synthesismodelling algorithm and the numerical simulations for a CPV system, orientated with an azimuth tracking system, i... Autori: Ioana Sinziana Hermenean, Ion Visa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25748
COPPER SULFIDES THIN FILMS WITH CONTROLLED PROPERTIES FOR PHOTOVOLTAIC CELLS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:Films of CuxS with 430-700 nm thickness were deposited by robotic spray pyrolysis technique, at T = 300Â?C, using 90 sprayingsequences, from water:ethanol:glycerol = 7:2:1 (in volumes) solutions with a molar ratio Cu:S = 1:2.5-3.5. Relative dense,homogenous and uniform films of CuxS (x = 1.8-2), with Eg = 1.97-2.49 eV and exhibiting electric resistance behavior wereobtained. The as-deposited films were annealed in air or in sulfur atmosphere, at 300 Â?C, for one hour. Dense and uniform ... Autori: Alexandru Enesca, Anca Duta, Ionut Popovici, Luminita Isac ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25749
REMOVAL OF METHYL ORANGE AND METHYLENE BLUE DYES FROM WASTEWATER USING SAWDUST AND SAWDUST-FLY ASH AS SORBENTS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:Methyl orange and methylen blue are two dyes resulted from the textile industry. They are not raising just esthetical problems, butthey are toxic and hence harmful to aquatic animals. The aim of this study is to test the capacity of three types of sawdust (oak,willow and white poplar) and mixed substrates, sawdust: fly ash (FA), to remove the methyl orange (MO) and methylen blue(MB) from wastewater. The influence of contact time, solution pH and initial concentration of dyes on the blea... Autori: Anca Duta, Dora Lucaci ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25752
COMPACTION COEFFICIENT OF WOODEN BRIQUETTES USED AS RENEWABLE FUEL
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:This paper aims to analyze two types of wooden briquettes made from different raw material, in order to determine thecompactness of the wood used, namely their compaction coefficient. This factor is a new feature of briquettes that defines moreprecisely the quality of them. The density of raw material and briquettes causes the compaction coefficient, namely the ratiobetween them. Relevance of research and scientific innovation results from the fact that European standard of wooden briqu... Autori: Aurel Lunguleasa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25753
CORROSION INHIBITION IN SALINE ENVIRONMENT USING KETONIC MANNICH BASE FROM ortho-HYDROXYACETOPHENONE
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:The paper presents the results obtained when using one ketonic Mannich base BM (1-(2’-hydroxyphenyl)-3-(1-piperidinylamino)propan-1-one hydrochloride) as corrosion inhibitor in saline environment, for different types of carbon steels,with various alloying elements. The Mannich base was synthesized and used in corrosion experiments, in concentrations varyingfrom 0….1300 ppm. The corrosion experiments were performed by potentiodynamic polarization studies, with 50 mVs-1 scanrate. The ... Autori: Andreea Milea, Cristina Bogatu, Ileana Manciulea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25754
PREPARATION AND CHARACTERIZATION OF HYBRID NANOCOMPOSITES FILMS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:Hybrid nanocomposites may synergistically combine and enhance the properties of inorganic nanoparticles and organicmolecules.The objective of this paper is to examine particular nanocomposites films based on binary copolymers and inorganic TiO2nanoparticles from the structure and properties point of view. These nanoparticles were dispersed in maleic anhydride-styrene(MAS) copolymer by using elaidic acid, trans isomer of the oleic acid, as coupling agent in order to increase the compatib... Autori: Alina Matei, Dana Perniu, Ileana Cernica, Irina Popescu, Lucia Dumitrescu, Vasilica Schiopu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25755
ENERGETIC AUTONOMY FOR A SOLAR HOUSE
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:Energy mix used in "Solar House" is currently composed of about 50% renewable energy sources (geothermal energy) and 50%conventional sources of energy (mainly electricity from national grid and less than 10% natural gas). The geothermal energy isextracted by the mean of a ground coupled heat pump which assures the heating load of the "Solar House" and the preparation ofdomestic hot water. The peak load in heating period is covered by a natural gas boiler and the electricity to drive the... Autori: Bogdan Burduhos, Ion Vişa, Macedon Moldovan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25756
SHAFTS DESIGN OF A GEAR BASED AZIMUTHAL TRACKED PHOTOVOLTAIC PLATFORM
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:It is of major importance that the mechanical structures and components of a photovoltaic (PV) system to have the same durabilityas the PV modules. The embodiment design process of the mechanical structure becomes significant as the results provide anoverall view of the PV system durability. The performance of the mechanical system must be attained based on functional andoperational requirements of the PV system. Therefore, the modelling and theoretical analysis of the mechanical behavi... Autori: Bianca Butuc, Gheorghe Moldovean, Radu Velicu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25757
HYDROTHERMAL SYNTHESIZED TiO2 BASED NANOPOWDERS FOR PHOTOCATALYTIC APPLICATIONS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:Hydrothermal synthesis was used to obtain nanostructured TiO2 based nanopowders. There were prepared pure and ZrO2 dopedcompositions consisting mainly of anatase phase with crystallite size up to 20 nm. The agglomerates of the as-synthesizedmaterials had dimensions ranging from a few hundreds nanometers to 200 microns. The investigations concerning the thermalbehavior revealed the presence of an exothermal effect at around 550oC which could indicate a possible phase transformation ofana... Autori: Adrian Mihail Motoc, Anca Duta, Oana Raita, Radu Adrian Carcel, Radu Robert Piticescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25758
THERMODYNAMIC PERFORMANCE FOR THE SOLAR COLLECTOR OF A MICRO-COMBINED COOLING, HEATING AND POWER SYSTEM
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:The paper presents a computer modelling and experimental validation for the thermodynamic performance of parabolic troughsolar collectors (PTSC) used in a micro-combined cooling,e heating and power (mCCHP) system. The thermal efficiency, fluidoutlet temperature, heat gain and heat and optical losses of the collector are calculated depending on the collector geometry,optical properties, fluid properties, fluid inlet temperature and flow rate, solar insolation, wind speed and ambient temp... Autori: Ion V. Ion, Lizica Simona Paraschiv, Spiru Paraschiv ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25760
PARAMETERS EFFECT ON THE PRODUCT DISTRIBUTION IN THE BIOMASS TO FISCHER-TROPSCH FUELS PROCESS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:The increasing of energy consumption and fossil fuel emissions (especially CO2, SO2 and NOx) and the limitation of crude oilreserves, determined a growing trend toward renewable energy technologies, like solar, wind, geo-thermal energy and biomass forbiofuels.From all the renewable energies sources, biomass attracts more and more interest being a renewable resource with economicpotential, which can be found all over the world, with positive environmental properties due to neutral emissi... Autori: Anca Sauciuc, Angela Potetz, Georg Schlaub, Gerald Weber, Hermann Hofbauer, Lucia Dumitrescu, Reinhard Rauch, Ziad Abosteif ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25762
EXERGY ANALYSIS OF A SOLAR STIRLING ENGINE ASSEMBLY
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:A thermodynamic model for studying the overall efficiency and power output of a solar assembly using a Stirling engine ispresented. It is based on the application of the energy and exergy balance equations to the system components. The results of theproposed model are generated as a function of solar incident radiation whose analytical estimation is presented. The numericalapplication is set for a solar assembly operating in Bucharest, composed by a parabolic dish mirror, a plane receiv... Autori: Adina Gheorghian, Alexandru Dobrovicescu, Camelia Stanciu, Dorin Stanciu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25764
DESIGN AND SIMULATION OF A PHOTOVOLTAIC STRING WITH TRACKING MECHANISM
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:The paper presents a method to improve the efficiency of a photovoltaic (PV) string by employing a mono-axis trackingmechanism. The tracking system was optimized so that it has minimum energy consumption during tracking. The PV stringsimultaneously changes the daily position using a linear actuator which transmits the motion to all modules by a rack-pinion gearmechanism. The system is designed in virtual prototyping concept with the following software solutions: for the solid modeling -... Autori: Cătălin Alexandru, Nicoleta-Irina Tatu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25766
THE ENERGY EFFICIENCY OF NATURAL SHADING WITH CLIMBING PLANTS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:The work presents the results in investigating the thermal behaviour of passive solar elements, for expanding the existing analysisand prediction methodologies. The interest focuses on solar control through natural shading with deciduous plants. This providesa natural path for incorporating all advantages the passive behaviour, available throughout the year. The simulation of thedynamic energy performance of building elements is developed, starting with a physical modelling of the vario... Autori: Angelos D. Tzachanis ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25768
CLEAN ENERGY RESPONSE OF PV SYSTEMS WITH AZIMUTH AND PSEUDO-EQUATORIAL TRACKING
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:The present study proposes a comparative analysis on the clean electric energy response given by two types of PV (photovoltaic)tracking systems implemented on the same location: the azimuth and the pseudo-equatorial. The analysis is done based on analgorithm applied on the two-axes and one-axis systems. The tracking is done according to various laws, obtained by combiningdaily, seasonal and annual tracking programs. The algorithm and the comparative analysis are exemplified, by numerica... Autori: Dorin Diaconescu, Maria Monica Vatasescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25770
COMPARATIVE HEAVY METALS AND DYES REMOVAL EFFICIENCY ON FLY ASH AND WOOD ASH
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:Ash is a waste that can be an efficient substrate in wastewater treatment for the immobilization of heavy metals and for dyesremoval. For an up-scalable wastewater treatment process, efficient substrates, with relatively constant behavior are needed andmodifying the adsorbent surface can be a feasible solution. Fly ash, resulted from coal burning, and wood ash are mixtures mainlycontaining metal oxides and carbon in various proportion, depending on the initial raw material.The paper pre... Autori: Maria Visa, Mihaela Nacu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25771
REDUCING THE VOLUME OF WASTE BY COMPOSTING VEGETABLE WASTE, SEWAGE SLUDGE AND SAWDUST
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:Our research was focused on developing some new procedures to reduce the biodegradable wastes by composting. The aim of thisstudy was to obtain and asses at laboratory scale the maturity of three compost samples of different proportion of vegetable waste,beech sawdust and sewage sludge by analyzing their FT-IR spectra and C/N ratio. The composting process was monitored by testsperformed weekly on the three samples in order to investigate the physical parameters (pH and electroconductivi... Autori: Anca Sauciuc, Claudia Zaha, Ileana Manciulea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25772
LEACHING OF NONFERROUS METALS FROM OXIDIZED LOW GRADE COMPLEX CONCENTRATE
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:The oxidation of low grade complex concentrates (Cu, Pb and Zn) in aqueous media (weak alkaline) oxidized nonferrous metalsconcentrates is carried out at high pressure. Leaching is the subsequent processing step in metal extraction. The paper studies theinfluence of some parameters (temperature, time, L:S ratio, excess) on the leaching efficiency of nonferrous metals from oxidizedconcentrate. The optimum parameters determined are: S/L ratio of 10/1, 25% reactive excess, leaching tempera... Autori: Cornelia Lupu, Dragoş Taloi, Liliana Gherghe, Luminita Mara, Teodor Velea, Vasile Predica ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25774
METALLIC MEMBRANES OBTAINED WITH GRADED STRUCTURE FOR MICROFILTRATION
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:The aim of this work is to obtain sintered porous membranes with graded structure for microfiltration by sedimentation andsintering of metallic powders. Our previous studies have demonstrated the possibility of obtaining sintered porous materials withgraded structure by sedimentation. In this paper, spherical nickel particles were used having a grain size in the 2-90 µm rangemeasured by the laser scattering particle size analyzer. The powders were sedimented into a sintering die in a s... Autori: Gyorgy Thalmaier, Ioan Vida-Simiti, Nicolaie Jumate, Niculina Sechel, Valentin Moldovan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25775
SPECTROPHOTOMETRIC PARAMETERS FOR ORGANIC MATTER CHARACTERIZATION IN RAW AND TREATED SURFACE WATER
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:This study aimed to assess the coagulation performance using simple aluminum sulfate (Alum) and pre-hydrolyzed polyaluminumchloride (PACl) coagulation agents by conventional global parameters, i.e., turbidity and organic matter expressed by totalorganic carbon (TOC) and chemical oxygen demand (COD), and non-conventional spectrophotometric parameters.Non-conventional spectrophotometric parameters, expressed as absorbance recorded at different wavelengths, i.e., A254, A280,A365, allowed d... Autori: Florica Manea, Georgeta Burtică, Ilie Pisoi, Smaranda Masu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25777
OPTIMIZATION OF PHOTO-CATALYTIC PROCESS BY TiO2 NANO POWDER IMMOBILIZED ON CONCRETE SURFACE FOR TREATMENT OF PHENOLIC WASTEWATER
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:In this paper, photo-catalytic process for treatment of phenolic wastewater by TiO2 nano powder immobilized on concrete surfacein a recirculation hydraulic flow was investigated. The process affected by different operational conditions that the optimum onescould be obtained from variables interchange. Taguchi method as a proper method for design of experiments and optimizationwas used to find optimum conditions. Selected five parameters at four levels were consists of initial phenol con... Autori: Bita Ayati, Hossein Ganjidoust, Mohammad Delnavaz, Sohrab Sanjabi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25778
FUZZY SYNTHETIC EVALUATION OF WEIHE WATER QUALITY
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:Based on the fuzzy logic principle, a modified Fuzzy Synthetic Evaluation (FSE) is proposed to assess water quality status ofWeihe River (Baoji, China). The potential application of the FSE has been tested in a case study. Twelve sampling locations ofWeihe River and its tributaries in Baoji area were selected and seven water quality parameters of BOD5, COD, fluoride, ammonia,total phosphorus (TP), total nitrogen (TN) and permanganate index, were monitored from 2008 to 2009. The findings... Autori: Chundi Xu, Jun Zhang, Qi Zhou, Yani Geng, Yaqian Zhao ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25780
CONTRIBUTIONS TO THE IMPROVEMENT OF POLLUTION CONTROL IN LAKES AND AN APPLICATION FOR THE GOVORA LAKE
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:In this paper, the mathematical model is improved by considering the density variations of the liquid from the pollution source vs.pollutant’s concentration of this liquid and by including the sorption-desorption term (SDT), which takes into account thisphysical process, played by a first-order decay model defined by two coefficients and an exponent. In order to practically use thisimproved mathematical model, the authors inferred the calculating relationships from automatic processin... Autori: Daniel Bucur, Esmeralda Chiorescu, Gheorghe Ţigaret ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25783
THE ASSESSMENT OF THE IMPACT ON THE ENVIRONMENT OF THE LIMESTONE QUARRIES USING SATELLITE IMAGES
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:Surface exploitations in the limestone quarries have a major impact on the environment both by area and intensity. The valuationof the impact can be carried out through different means, one of them being the satellite remote sensing. In this article we analyzethe effects that limestone exploitations in the outskirts of BraÂ?ov city have on the landscape, using RGB combination, vegetationindices and spectrum profiles. A series of Landsat 5 TM satellite images taken in 1984, 1989 and 2009... Autori: Iosif Vorovencii ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25784
BIOREMEDIATION OF PETROLEUM SLUDGE UNDER ANAEROBIC MICROENVIRONMENT: INFLUENCE OF BIOSTIMULATION AND BIOAUGMENTATION
Environmental Engineering and Management Journal › Vol. 10 › Nr. 11 Abstract:Bioremediation is considered as one of the prominent and cost-effective cleanup technology to treat oily sludge disposals. In the present investigation anaerobic bioremediation of petroleum based oily sludge was studied in a slurry reactor by applying different experimental strategies viz., bioaugmentation, biostimulation and co-substrate addition. Total petroleum hydrocarbons (TPH) present in the oily sludge before and after degradation was extracted using soxhlet extraction procedure.... Autori: Asha Juwarkar, Kuppam Chandrasekhar, Mamilla Prathima Devi, Motakatla Venkateswar Reddy, Ponnapalli Nageswara Sarma, Srinivasula Reddy Venkata Mohan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25794
DEGRADATION OF METHYL ORANGE MEDIATED BY CuO-DOPED ZnO PHOTOCATALYSTS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstact:0.5 - 2.0% CuO-doped ZnO (CuO-ZnO) photocatalysts were prepared with a simple mixing method where the oxides wereinitially synthesized through precipitation. The physico-chemical properties of CuO-doped ZnO photocatalysts were studied viaXRD, TEM, XRF and BET method and their photoactivity was evaluated by degrading methyl orange (MO) dye. The propertiesof ZnO were not affected by the addition of CuO except for the particle size of the photocatalyst, which increased proportionallywith Cu... Autori: Abdul Halim Abdullah, Md. Jelas Haron, Nor Zafirah Razali ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25785
EXTENSION OF ACTIVATED SLUDGE MODEL NO 1 WITH TWO-STEP NITRIFICATION AND DENITRIFICATION PROCESSES FOR OPERATION IMPROVEMENT
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:The present paper presents an enhanced Activated Sludge Model No. 1 in which nitrification and denitrification are modelled astwo-step processes. The nitrification process is considered as a sequence of two steps carried out by two distinct genera ofbacteria, with nitrite as an intermediate product. For the denitrification process a parallel approach was used that considers nitrateand nitrite to be directly reduced to molecular nitrogen. The new model is compared to the original Activat... Autori: George Simion Ostace, Paul Şerban Agachi, Vasile Mircea Cristea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25786
INCREASED SECURITY OPERATION OF NUCLEAR FACILITIES BY USING REFRIGERATION SYSTEMS WITH ENVIRONMENTALLY FRIENDLY FREON
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:One of the basic conditions for the operation of nuclear installations is security operation. The complexity of the phenomena inheavy water detritiation plants, determine the use of advanced equipment for technological processes involved. Pilot Plant forTritium and Deuterium Separation developed the cryogenic technology of tritium separation from tritiated heavy water. Theprocess is based on an catalyzed isotopic exchange module, where the tritium is extracted from tritiated heavy water... Autori: Sorin Gherghinescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25787
INFLUENCE OF SOME PARAMETERS ON NITRATE REMOVAL FROM WATER BY PUROLITE A-520E RESIN
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:In this study, removal of nitrate from aqueous solutions was investigated using an anion exchange resin, Purolite A-520E. Theinfluence of several experimental parameters, such as initial solution pH, resin dosage, phase contact time, initial concentration ofnitrate ions from aqueous solution, and temperature, has been examined in batch experiments. The results of this investigationreveal that the ion exchange process is favored at the initial solution pH (around) 6.8. The resin studied ... Autori: Anca Ceica, Igor Creţescu, Ion Balasanian, Laura Bulgariu, Liliana Lazăr ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25788
SYNTHESIS OF NEW CATALYSTS BY INSERTION OF Co AND Cu IN THE MATRIX OF HYDROTALCITE-LIKE MATERIALS FOR CINNAMALDEHYDE HYDROGENATION
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:This study is focused on the influence of Co and Cu ions located in Zn/Ni/Al matrix on the structural, textural and catalyticproperties of layered double hydroxides (LDHs). The samples were prepared by co-precipitation (Ni2+/Co2+(Cu2+)=0.25;M2+/M3+=2)) at low super-saturation and afterwards characterized by XRD, nitrogen physisorption, thermogravimetry, FT-IR, DRUV-Vis and TPR. The XRD results show that the resulted solids are well crystallized and contain only pure phases of LDHs.Also,... Autori: Adrian Ungureanu, Alexandru Chirieac, Brindusa Dragoi, Emil Dumitriu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25789
ADSORPTION OF Pb (II) FROM AQUEOUS SOLUTION ONTO LEWATIT FO36 NANO RESIN: EQUILIBRIUM AND KINETIC STUDIES
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:This investigation focused on the adsorption of Pb (II) onto Lewatit FO 36 resin from aqueous solutions. The effects of initialmetal concentration, contact time, pH of solution were factors that affected the adsorption of Pb (II). Adsorption kinetic was betterexplained by the pseudo second order type 1 kinetic model that was confirmed by the values (R2>0.986). The Langmuir,Freundlich, Temkin and BET adsorption models were used for the equilibrium studies and Freundlich isotherm bette... Autori: Alireza Asgari, Azra Setodeh, Mehdi Ahmadi, Mohamad Sedigh Mortazavi, Pari Teymouri ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25791
CLIMATE CHANGE POLICY IN SHIPPING FOCUSING ON EMISSION STANDARDS AND TECHNOLOGY MEASURES
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:There is a growing concern that the Earth’s atmospheric composition is being altered by human activities which can lead toclimate change. Policy measures to reduce carbon dioxide emissions are on the agenda of the International Maritime Organization(IMO) and the European Union (EU). Climate Change is an environmental problem and answers have to be sought among robustenvironmental policies that are often classified in market-based, command-and-control and voluntary instruments. Althoug... Autori: Christos A. Kontovas, Harilaos N. Psaraftis ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25792
USE OF D2EHPA-IMPREGNATED XAD7 RESIN FOR THE REMOVAL OF Cd(II) AND Zn(II) FROM AQUEOUS SOLUTIONS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:The adsorption performance of a novel support for metal ions sorption and their removal from aqueous solutions was examined.The support is a new solvent-impregnated resin (SIR) which can be considered as an alternative adsorbent material capable ofselective sorption. The adsorbent was prepared by impregnating di-(2-ethylhexyl)-phosphoric acid (D2EHPA) onto AmberliteXAD7 resin beads, by dry impregnation method. The interaction between XAD7 resin and D2EHPA was evaluated by FTIRspectrosco... Autori: Adina Negrea, Adriana Popa, Cornelia Muntean, Corneliu Davidescu, Lavinia Lupa, Mihaela Ciopec, Petru Negrea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25793
WIRELESS SENSOR NETWORK FOR WILDLIFE MONITORING
Environmental Engineering and Management Journal › Vol. 10 › Nr. 11 Abstract:This paper illustrates a detailed analysis of specific problems and limitations of a WSN designed for an environmental protection/wildlife tracking application. Since the main challenge in designing the network is energy minimization for activities that does not concern detection itself, we will concentrate on methods (and results) to achieve that. For data transmissions, physical and MAC layers were defined in ZigBee (IEEE 802.15.4) and WiFi (IEEE 802.11b) standards.... Autori: Alexandru Frujină, Alina-Mihaela Bădescu, Octavian Fratu, Simona Halunga ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25796
POST TREATMENT OF POULTRY SLAUGHTERHOUSE WASTEWATER AND APPRAISAL OF THE ECONOMIC OUTCOME
Environmental Engineering and Management Journal › Vol. 10 › Nr. 11 Abstract:Recovery of residual ammonium nitrogen (NH4+-N) from dissolved air flotation (DAF) pretreated poultry slaughterhouse wastewater was studied by means of magnesium ammonium phosphate hexahydrate (MgNH4PO4.6H2O, MAP) precipitation in a lab-scale batch study. The maximum recovery values were obtained as 80.2%, 97.1% and 53.6% with the addition of MgCl2.6H2O + KH2PO4, NaH2PO4.2H2O + MgSO4.7H2O, and MgOHCO3 + 85% H3PO4 at pH 9.5, respectively. Based on the physicochemical findings, subsequent... Autori: Aylin Gunay, Idil Ozis, Ilter Turkdogan-Aydinol, Kaan Yetilmezsoy ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25797
THE USE OF THE A.G.P. TEST FOR DETERMINING THE PHYTOPLANKTON PRODUCTION AND DISTRIBUTION IN THE THERMALLY STRATIFIED RESERVOIRS: THE CASE OF YONGDAM RESERVOIR IN KOREA
Environmental Engineering and Management Journal › Vol. 10 › Nr. 11 Abstract: The paper focuses on eutrophication due to nutrients load into a reservoir. A thermally stratified reservoir water body is divided in vertical layers and horizontal zones according to water temperature and depth. The layers show different compositions of limiting nutrient because of the density of flow and due to inhabitants on the bottom of the reservoir exposed to sunlight. The bioassay for algal growth potential test (AGPT) is the most direct and effective way to determine a limitin... Autori: Dimitri Solomatine, Ioana Popescu, Jae-Ki Shin, Nahm-Chung Jung, Peter Kelderman, Roland K. Price ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25798
REMOVAL OF Cd (II) FROM AQUEOUS SOLUTION BY ADSORPTION ONTO COIR PITH, AN AGRICULTURAL SOLID WASTE: BATCH EXPERIMENTAL STUDY
Environmental Engineering and Management Journal › Vol. 10 › Nr. 11 Abstract:Coconut coir pith, an agricultural solid waste was used for the sorption of Cd (II) from aqueous solution in batch mode. Parameters like contact time, adsorbent dosage and pH effect were studied. Langmuir and Freundlich isotherms were used to model the adsorption equilibrium data and the system followed both the isotherms. Cd (II) adsorption capacity of coir pith was found to be 18.72 mg/g. Kinetic parameters of adsorption such as the Langergren pseudo-first-order, pseudo second order r... Autori: Nagendra Badabhagni, Puthiya Veetil Nidheesh, Rajan Gandhimathi, Srikrishnaperumal Thanga Ramesh ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25800
EFFECT OF ULTRAVIOLET RADIATIONS ON THE MICROBIOLOGICAL QUALITY OF DRINKABLE GROUNDWATER
Environmental Engineering and Management Journal › Vol. 10 › Nr. 11 Abstract:In this paper, the effect of the ultraviolet light on various pathogen microbial strains present in drinkable groundwater samples (wells) from Constanţa County, Romania (localities Moviliţa, Topraisar, M. Kogălniceanu) was analyzed. The investigations were conducted in an original UV-C irradiation prototype installation for water samples. The efficiency of this prototype in destroying the pathogen agents present in drinkable groundwater was established by monitoring the p... Autori: Bogdan Negreanu-Pîrjol, Elena Gorun, Remus Zăgan, Sabina Zăgan, Ticuţa Negreanu-Pîrjol ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25802
ANALYTICAL CONTROL OF SOIL AND GROUND WATER QUALITY ON A NORTHERN ROMANIAN LANDFILL
Environmental Engineering and Management Journal › Vol. 10 › Nr. 11 Abstract:This paper evaluates the efficiency of some technical depollution actions applied on a Northern Romanian landfill of solid municipal wastes, that provides ca 128 000 inhabitants and 171 economic companies, considering a great variety of specific physicochemical quality indicators for soil (8 indicators) and ground waters (34 indicators). The environmental status of the landfill was previously studied in 2004, through periodic analytical control of ground water (4 observation drilling we... Autori: Carmen Zaharia, Daniela Suteu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25803
ELECTROCHEMICAL DECOLORIZATION TREATMENT OF NICKEL PHTHALOCYANINE REACTIVE DYE WASTEWATER
Environmental Engineering and Management Journal › Vol. 10 › Nr. 11 Abstract: In this study, decolorization and degradation of aqueous nickel phthalocyanine reactive dye solutions was comparatively studied by electrochemical methods, such as electrocoagulation, electrooxidation and electro-Fenton processes. In the electrocoagulation process with aluminum electrodes the colored aqueous solutions containing 100 mg/L nickel phthalocyanine and 6 g/L NaCl were treated at initial pH 7.5 and applied current densities of 5, 10 and 20 mA/cm2, where fast and 100% decolori... Autori: Achilleas Christoforidis, Dimitrios Marmanis, Evgenia Valsamidou, Konstantinos Dermentzis, Konstantinos Ouzounis ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25804
CHARACTERIZATION AND TESTING OF THE MAGHEMITE NANOPARTICLES USED FOR REMOVAL OF HEXAVALENT CHROMIUM FROM AQUEOUS SYNTHETIC SOLUTIONS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 11 Abstract:The paper refers at adsorption studies using the maghemite nanoparticles as adsorbent for removal of the hexavalent chromium from aqueous synthetic solutions. Adsorption reached at equilibrium within 10 minutes and was registered as maximum at pH 2.54. The adsorption data were analyzed and fitted by Langmuir isotherm. Investigation methods for characterization of the nanoparticles were X-ray diffraction, scanning and transmission electron microscopy. Also, in order to evaluate the hexav... Autori: Andra Mihaela Predescu, Andrei Predescu, , Eugeniu Vasile ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25805
USE OF ARTIFICIAL NEURAL NETWORK FOR PREDICTION OF COAGULATION/FLOCCULATION PROCESS BY PAC IN WATER TREATMENT PLANT
Environmental Engineering and Management Journal › Vol. 10 › Nr. 11 Abstract:The paper presents the results of a study carried out using the Artificial Neural Network (ANN) for prediction the coagulation/flocculation process of suspended solids in water treatment plant (WTP). In this research 5 kinds of Poly Aluminum Chloride (PAC) as coagulant were used to examine the impact of coagulant kinds, PAC dosage and influent turbidity for removal of suspended solids. Determination of optimal coagulant doses is vital, as insufficient dosing will result in undesirable t... Autori: Gagik Badalians Gholikandi, Mohammad Delnavaz, Reza Riahi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25806
IMMOBILIZATION OF CONIDIOBOLUS CORONATUS ALKALINE PROTEASE ON WASTE FUNGAL BIOMASS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 11 Abstract:Alkaline protease from Conidiobolus coronatus which is optimally active at pH 10 and 40°C finds application in leather and detergent industries as well as for recovery of silver from waste photographic films. The protease was immobilized in Ca-alginate, polyacrylamide gel and alkali treated waste fungal biomass (ATWFB). ATWFB was found to be most suitable among the matrices tested. Glutaraldehyde marginally increased the binding to ATWFB. Binding of protease to ATWFB seems to be through... Autori: Ryali Seeta Laxman, Shiv Shankar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25807
EFFECT OF ORGANIC CARBON LOADING (OCL) ON SIMULTANEOUS NH4 +-N AND Mn2+ REMOVAL IN DRINKING WATER USING A BAF SYSTEM
Environmental Engineering and Management Journal › Vol. 10 › Nr. 11 Abstract:The effect of organic carbon loadings (OCLs) on NH4+-N and Mn2+ removal was investigated using a novel approach of biological aerated filter (BAF) for drinking water treatment system. Three different OCLs of 0.2, 0.5 and 1.0 kg COD/m3.d were loaded into BAF which was operated in batch-wise at 24 h hydraulic retention time. The experiments resulted in higher COD, NH4+-N and Mn2+ removal percentages at OCL of 1.0 kg COD/m3.d with removal of 97.1%, 97.4% and 94.7%, respectively. The +-N ef... Autori: Hassimi Abu Hasan, Noorhisham Tan Kofli, Siti Kartom Kamarudin, Siti Rozaimah Sheikh Abdullah ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25808
KINETICS AND EQUILIBRIUM STUDIES OF REACTIVE YELLOW 125 ADSORPTION ON A NITROGEN DOPED TiO2 MODIFIED ZEOLITE
Environmental Engineering and Management Journal › Vol. 10 › Nr. 11 Abstract:In this study, the adsorption mechanism of a reactive azo dye, Reactive Yellow 125 (RY 125), onto a nitrogen doped TiO2 modified zeolite (Z-TiO2-N) has been examined in order to identify the affinity of the material for the investigated pollutant envisaging its degradation by heterogeneous photocatalysis. Equilibrium experiments were performed and the data obtained were fitted with different isotherm equations, i.e., Langmuir, Freundlich, and Dubinin-Radushkevich (D-R). The Freundlich i... Autori: Cornelia Ratiu, Elida Cristina Ilinoiu, Florica Manea, Laura Cocheci, Liliana Andreea Colar, Rodica Pode ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25809
LEAD (II) BIOSORPTION BY A METAL TOLERANT STREPTOMYCES STRAIN
Environmental Engineering and Management Journal › Vol. 10 › Nr. 11 Abstract:The aim of the present study is the optimization of biosorption conditions using a metal tolerant actinomycete (strain 723) for the removal of lead ions from waste water in batch and dynamic flow mode. The optimum conditions for lead biosorption by the strain were determined as initial pH 3.0, biomass amount 2.0 g L-1, and initial metal concentration 400 mg L-1 in the batch condition. The maximum lead biosorption performance was obtained with a 19 mm diameter column, a 1 mL min-1 flow r... Autori: Ayşe Betül Karaduman, Maria Julia Amoroso, Mustafa Yamaç, Sergio Antonio Cuozzo, Zerrin Pat ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25811
RISK OF EXPOSURE TO ASBESTOS IN CASE OF THE MECHANICAL DEGRADATION OF SOME ASBOCEMENT COMPOSITES
Environmental Engineering and Management Journal › Vol. 10 › Nr. 11 Abstract:The hereby article presents a part of the results of the research made by the author during his PhD degree preparation with respect to asbestos and plastics wastes recycling in the form of composite with polymeric matrix, respectively the toxicological tests performed on the new product. In this respect, three categories of tests were made based on complex and modern analysis methodologies, with high results accuracy: spectral analysis of the wear wastes, morphological analysis of the w... Autori: Cristina Corpodean, Silvian Ionescu, Valeriu Deac ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25812
EMPIRICAL ANALYSIS OF THE INTEGRATION OF ENVIRONMENTAL PROACTIVITY INTO MANAGERIAL STRATEGY. IDENTIFICATION OF BENEFITS, DIFFICULTIES AND FACILITATORS AT THE SPANISH AUTOMOTIVE INDUSTRY
Environmental Engineering and Management Journal › Vol. 10 › Nr. 12 Industrial firms around the world are focusing on environmental sustainability seeking competitive advantages. Environmental proactivity stands as a fundamental part of these actions. The objective of this work is to understand who and why, companies include the environmental proactivity as an element of the company's strategy. This research has been divided into two separate but interconnected, methodological phases. The first step applied qualitative methods to describe a generic model environ... Autori: Ángel Peiró-Signes, Baldomero Segura-García-del-Río, Conrado Carrascosa-López, María-del-Val Segarra-Oña ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25818
PHOSPHATE REMOVAL FROM WATER AND RECOVERY USING IRON (Fe+3)OXIDE/HYDROXIDE NANOPARTICLES-BASED AGGLOMERATES SUSPENSION (AggFe) AS ADSORBENT
Environmental Engineering and Management Journal › Vol. 10 › Nr. 12 An iron(Fe+3) oxide/hydroxide nanoparticles-based agglomerates (AggFe) suspension adsorbent was synthesized for efficient, cost-effective phosphate removal. A strong effect of AggFe concentration and pH level of water containing phosphate on removal efficiency was shown. It was found that phosphate adsorption onto the AggFe suspension may be described by pseudo-secondorder reaction kinetics and the Langmuir isotherm model. The unique adsorption properties of synthesized AggFe adsorbent are demon... Autori: Grigori Zelmanov, Raphael Semiat ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25829
COMPARISON BETWEEN RADAR ESTIMATED AND RAIN GAUGE MEASURED PRECIPITATION IN THE MOLDAVIAN PLATEAU
Environmental Engineering and Management Journal › Vol. 11 › Nr. 4 Heavy rainfall events have produced significant damages and casualties in the Moldavian Plateau (Romania) in the last decades. Such phenomena are characterized by large spatial and temporal variations, and the forecast of their occurrence is thus very challenging. This study aims to compare the radar estimations and the rain gauge measurements, in order to improve the quantitative precipitation estimation (QPE) in the area of interest. The research uses data from the WSR-98D (Weather Surveillanc... Autori: Alexandru Dumitrescu, Aurora Bell, Bogdan Antonescu, Sorin Burcea, Sorin Cheval, Traian Breza ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25940
HSLA STEEL AND CAST IRON CORROSION IN NATURAL SEAWATER
Environmental Engineering and Management Journal › Vol. 10 › Nr. 12 The corrosion products of high strength low-alloyed steel and of cast iron, maintained a prolonged period in natural seawater, were analyzed. A part of the corrosion products are soluble compounds of divalent and trivalent iron, the iron dissolution being accelerated when divalent ions are formed and in the case of the aerated seawater. The solid corrosion product formed during corrosion in seawater is principally oxy-hydroxide (FeOOH), but were identified small quantities of Fe2O3, Fe3O4 and so... Autori: Daniel Mareci, Maria Lungu, Nicanor Cimpoeşu, Nicolae Aelenei ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25832
THE FREE LEVEL UNIFORM POST-DARCY FILTRATION THROUGH A SPHERE-MADE HOMOGENOUS MEDIUM
Environmental Engineering and Management Journal › Vol. 10 › Nr. 12 This paper refers to the post-Darcy free level uniform filtration. The capillary tube fascicle model is applied to this filtration. The theoretical Ch?©zy coefficient is computed and also experimentally verified for a homogenous and isotropic material, made of glass spheres. The typical features for the free-level post-Darcy filtration (depending on slope) are the lover, critical and higher stages flows.... Autori: Aron Gabor Molnar, Daniel Toacă, Daniel Toma, Iosif Bartha, Nicolae Marcoie, Victor Gabor ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25833
COMBINED OXIDATION AND ULTRAFILTRATION PROCESSES FOR THE REMOVAL OF PRIORITY ORGANIC POLLUTANTS FROM WASTEWATERS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 12 This paper presents a study on the integration of two advanced treatment processes for the removal of priority organic processes from wastewaters: catalytic oxidation (Fenton homogenous process) followed by ultrafiltration. The aim of this study was to assess the removal efficiency for 4-chlorophenol (used as model pollutant), as well as the decrease in effluent toxicity in various processes conditions. The experiments have mainly focused on studying the effect of the oxidant dose of the catalyt... Autori: , Cezar Catrinescu, Corina Petronela Musteret, Daniela Arsene, George Barjoveanu, Petru Apopei ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25834
ENSURING ECONOMICAL AND FINANCIAL SUSTAINABILITY: STATE FISCAL CONTROL - A WAY TO PREVENT AND REDUCE TAX AVOIDANCE
Environmental Engineering and Management Journal › Vol. 10 › Nr. 12 Human nature constantly tends to place personal interest first, to the detriment of general interest. In this respect, tax and duty payers have always attempted to evade payments on their tax liabilities, resorting to various tactics, as they view such compulsory payments as detrimental to their wealth and income. On the other hand, the state seeks to maximise its receipts from taxes, duties, excises etc. In Romania, after 1990, an entire range of anti-tax reactions occurred in the sphere of pub... Autori: Carmen Sandu, , Marius Vorniceanu, ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25835
EVALUATING THE CLIMATIC CHANGES IN THE HYDROLOGICAL FLOW REGIME OF THE MOLDAVIAN AREAS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 12 Increased intensity of precipitation events in a future climate provide result in a number of regions with improved, more detailed models. Many mathematical models include this part of hydrological cycle with implications regarding the climatic changes. The case study shows aspects regarding the climatic changes and its impact on designing the hydraulic structures and the hydrotechnical constructions behaviour in the case of extreme hydro-meteorological phenomena.... Autori: Catrinel-Raluca Giurma-Handley, Ioan Crăciun, Ion Giurma, , Valentin Boboc ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25836
Environmental Engineering and Management Journal 10/12
Environmental Engineering and Management Journal › Vol. 10 › Nr. 12 â€? SUSTAINABILITY IN ENVIRONMENTAL REMEDIATION
� EVALUATING THE CLIMATIC CHANGES IN THE HYDROLOGICAL FLOW REGIME OF THE MOLDAVIAN AREAS
� ENSURING ECONOMICAL AND FINANCIAL SUSTAINABILITY: STATE FISCAL CONTROL - A WAY TO PREVENT AND REDUCE TAX AVOIDANCE
� COMBINED OXIDATION AND ULTRAFILTRATION PROCESSES FOR THE REMOVAL OF PRIORITY ORGANIC POLLUTANTS FROM WASTEWATERS
� THE FREE LEVEL UNIFORM POST-DARCY FILTRATION THROUGH A SPHERE-MADE HOMOGENOUS MEDIUM
� HSLA ST... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25838
ABIOTIC FILTERING OF BENTHIC INVERTEBRATE GUILDS IN THE MARGHERITA DI SAVOIA SALT PAN, ITALY
Environmental Engineering and Management Journal › Vol. 11 › Nr. 4 The structure of biological communities is a result of the combined action of an environmental selection, determined by the physico-chemical characteristics of an ecosystem. This process results in the selection of the species depending on their tolerances (abiotic filter) and their ability to cope with the interactions among species (biotic filter). In this work, the importance of abiotic filters on the structure of benthic macro-invertebrate guilds was evaluated in a hyperalyne transitional wa... Autori: Alberto Basset, Aurelia Caldararu, Catalina Iticescu, Enrico Barbone, Ilaria Rosati, Lucian P. Georgescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25939
DIRECT SEPARATION OF PROPIONIC ACID FROM Propionibacterium acidipropionici BROTHS BY REACTIVE EXTRACTION 1. INTERFACIAL MECHANISM AND INFLUENCING FACTORS
Environmental Engineering and Management Journal › Vol. 11 › Nr. 4 The reactive extractions of propionic acid with TOA dissolved in three solvents with different dielectric constants (dichloromethane, butyl acetate, n-heptane) without and with 1-octanol as phase modifier have been comparatively analyzed. The results indicated that the mechanism of the interfacial reaction between acid and extractant is controlled by the organic phase polarity. In absence of 1-octanol, the structures of the extracted complexes are RCOOH.Q2 for dichloromethane and butyl acetate, ... Autori: Alexandra Cârlescu, Anca-Irina Galaction, Dan Caşcaval, Mădălina Poştaru ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25938
POLYCYCLIC AROMATIC HYDROCARBONS IN WASTEWATER SEWERAGE SYSTEM FROM THE CLUJ-NAPOCA AREA
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 Polycyclic aromatic hydrocarbons (PAHs) are by-products of petrol transformation; a report prepared by ICON, London, United Kingdom in 2001, showed that the principal sources of polycyclic aromatic hydrocarbons in wastewater are domestic usage, storm runoff and commercial effluent. This work presents the results on 14 commonly occurring and/or highly carcinogenic PAH compounds listed as priority pollutants by the United States Environmental Protection Agency and the European Union. Wastewater sa... Autori: Dumitru Ristoiu, Edward Muntean, Livia Alhafez, Nicoleta Muntean, Radu Mihaiescu, Tania Mihaiescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25847
REMOVAL OF Cr(VI) FROM AQUEOUS ENVIRONMENT USING PEAT MOSS: EQUILIBRIUM STUDY
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 The removal of Cr (VI) from aqueous solutions by sphagnum peat moss was investigated in batch experiments as a function of solution pH and initial Cr (VI) concentration. The highest removal percentage (R=99%) was obtained at pH = 1, in solutions of 20.8 mg Cr (VI)/L. In order to establish the mechanism of the removal process, Cr (VI) and total Cr (Cr (VI) + Cr (III)) in residual solutions was analyzed. The Cr (VI) removal by the peat moss at low pH is governed by two processes – electrostatic ... Autori: Catalin Balan, Doina Bilba, Irina Volf, Matei Macoveanu, Petru Bulai ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25849
PHYSICOCHEMICAL AND RHEOLOGICAL CHARACTERIZATION OF COMPLEX COAGULANTS DERIVED FROM WEAK AND MEDIUM ANIONIC POLYMERS AND MEDIUM CATIONIC SURFACTANT
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 This paper presents the physicochemical and rheological properties of some complex coagulants derived from the weak and medium anionic polymers and medium cationic surfactant in order to evaluate the opportunity to use them in destabilizing and removing the colloidal systems from water and wastewater. In this respect, weak anionic and medium anionic copolymers of acrylamide and sodium acrylate with commercial names of Preastol 2515 and Preastol 2540, and a medium cationic surfactant derived from... Autori: Constantin Bobirică, Gabriel Dabija, Liliana Bobirica, Mihaela Mihai ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25850
EQUILIBRIUM AND KINETICS STUDY OF NITRATE REMOVAL FROM WATER BY PUROLITE A520-E RESIN
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 Equilibrium and kinetics of nitrate removal from aqueous solutions of pH = 6.8 were investigated using the strong base anion exchange resin (Purolite A-520E) in the batch method. The experimental equilibrium data were analyzed by means of the Langmuir, Freundlich and Dubinin-Radushkevich sorption isotherm models. The Langmuir model describes sorption isotherm of nitrates with high correlation coefficients and better than Dubinin-Radushkevich and Freundlich models. The effect of temperature on th... Autori: Anca Ceica, Igor Creţescu, Ion Balasanian, Laura Bulgariu, Liliana Lazăr ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25851
CONTROLLING THE ACTIVITY AND CHEMOSELECTIVITY IN THE CINNAMALDEHYDE HYDROGENATION BY INSERTION OF NONNOBLE METALS IN THE MATRIX OF HYDROALCITE-LIKE MATERIALS
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 The purpose of this study was to prepare new nanocomposite catalysts of Metal/LDHs type by mild reduction of transition metal cations Co2+ and Cu2+ substituted in the matrix of ZnAl-LDH at 150°C and atmospheric pressure, under hydrogen flow. To this end, a series of ZnCuCoAl layered double hydroxides (LDH) precursors were synthesized by co-precipitation method. M2+/M3+ (i.e., Zn2+/Al3+) molar ratios were kept constant while the Cu2+/Co2+ molar ratios were varied in order to investigate their in... Autori: Adrian Ungureanu, Alexandra Sasu, Alexandru Chirieac, Alina Moscu Corcodel, Brindusa Dragoi, Constantin Rudolf, Emil Dumitriu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25852
PHYSICO-CHEMICAL CHARACTERISTICS AND DYNAMICS OF THE WELLS WATER IN GALATI COUNTY (ROMANIA)
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 The availability of good quality water is an indispensable condition for preventing diseases and improving the quality of life. Water is one of the most important renewable resources, which must be prevented from deterioration in quality. Various physicochemical parameters like pH, alkalinity, total hardness, total dissolved solids, calcium, magnesium, nitrate, have a significant role in determining the potability of drinking water. In this study, samples were collected from wells situated in vi... Autori: Maria Cioroi, Mirela Praisler ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25853
PHOTOCATALYTIC ACTIVITY OF A SILVER DOPED TIO2 MODIFIED ZEOLITE IN THE DEGRADATION OF REACTIVE YELLOW 125 AZO DYE
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 The aim of this study was to investigate photocatalytic activity of a silver doped TiO2 modified zeolite (Z-TiO2-Ag) in the photocatalytic degradation of Reactive Yellow 125 (RY 125) azo dye. The operational conditions using photocatalyst dose of 1g·L-1 at pH 6 were established as optimal conditions for photocatalysis application in RY 125 dye solution degradation. The photocatalyst exhibited a good performance for discoloration at all studied concentrations (25, 50 and 100 mgL-1). A go... Autori: Carmen Lazau, Elida Cristina Ilinoiu, Florica Manea, Liliana Andreea Colar, Rodica Pode ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25854
THE IMPACT OF ORGANIC AND MINERAL FERTILIZERS ON THE YIELD AND MINERALS CONTENTS OF Fabaceae FROM PERMANENT GRASSLAND
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 This paper presents original studies about the influence of mineral and/or organic fertilization on the minerals contents (P, Na, K, Ca, Mg, Fe, Mn, Zn, Cu, Ni and Pb) in leguminous plants from permanent grassland situated in a hill area of Banat County. Determination of minerals in grassland is very important both for the nutritional or toxic effects of these elements and their compounds, in the plants, animals and environment. Phosphorous was analyzed colorimetric and all the others metals hav... Autori: Alexandru Moisuc, Iosif Gergen, Monica Harmanescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25858
INFRASOUND IMPACT ON THE AQUATIC ECOSYSTEMS AND LIFE QUALITY
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 Infrasound is a sound wave with a range of frequencies below that of human hearing and is a constituent of the environment in which we live. Taking into consideration that infrasound is below the audible range and that its overall effects on the entire human organism are yet unknown, the ambiguity of the phenomenon requires further research. Although infrasound has been analyzed in depth in the past few decades and assumptions have been made regarding experiments on human subjects (with or witho... Autori: Carmen Cătălina Ioan, Cornelia Ursu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25859
ASSESSING ENVIRONMENTAL IMPACT OF PACKAGING PAPER PRODUCTION BASED ON RECYCLED FIBRE RAW MATERIAL
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 This paper is part of LCA studies performed in the frame of FP7 project â€?Recovered Paper Sorting by Innovative Technologies - SORT ITâ€?. It analysis the results obtained by Life Cycle Impact Assessment (LCIA) of the reference case for recycled packaging paper manufacturing (current sorting technology), which will constitute a comparison base for new sorting technology developed in SORT IT project. The main stages considered in the life cycle were: recovered paper (RP) transport from collectio... Autori: Alina Iosip, Antonio Dobon, Elena Bobu, Mercedes Hortal ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25860
FILTERING MEDIA FUNCTIONALIZED WITH MONOCHLOROTRIAZINYL-β-CYCLODEXTRIN
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 The present study describes the preparation of a filtering medium from a polymeric cellulosic support (filter paper) by functionalization with monochlorotriazinyl-β-cyclodextrin. The permanent immobilization of cyclodextrins confers the new material special properties and the potential for a better decontamination of liquid and gaseous effluents. The structure, physicomechanical and filtration properties of the filter paper, successfully functionalized with MCT-β-CD, have been emphasiz... Autori: Ana-Maria Grigoriu, Constantin Luca, Florin Ciolacu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25862
LEVELS OF METALS AND ORGANOCHLORINE COMPOUNDS IN SEAFOOD CONSUMED IN CLUJ-NAPOCA, ROMANIA
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 Marine species (n=36) available in a supermarket of Cluj-Napoca city, Romania were collected and analyzed for the levels of heavy metals (Cr, Cu, Zn, Cd, Pb, Hg) and As, polychlorinated biphenyls (PCBs), and organochlorine pesticides (OCPs), such as dichlorodiphenyltrichloroethane (DDT) and analogous, hexachlorocyclohexanes (HCHs) and hexachlorobenzene (HCB). The collection included samples from twelve fish groups (sardine, tuna, herring, pangasius, marbled rockcod, hake, shrimp, pink shrimp, lo... Autori: Adriana Gog, Claudiu Tanaselia, Ioan Ştefan Groza, Marin Senila, Mirela Miclean, Oana Cadar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25863
MICROWAVE-ASSISTED HYDROTHERMAL SYNTHESIS OF COMPOSITE MATERIALS BASED ON ZEOLITE-TiO2 NANOCRYSTALS
Environmental Engineering and Management Journal › Vol. 11 › Nr. 3 The composite materials based on natural zeolite and undoped and N-doped TiO2, i.e., Z-Na-TiO2 and Z-Na-TiO2-N, were successfully synthesized by solid-state reaction in microwave-assisted hydrothermal conditions. Undoped TiO2 and N-doped TiO2 nanocrystals were previously synthesized by sol-gel method. The X-rays diffraction results of TiO2 nanocrystals indicated that anatase TiO2 is the dominant crystalline type. The composite materials were structural and morphological characterized by X-ray di... Autori: Cornelia Bandas (Ratiu), Carmen Lazau, Paula Sfirloaga, Florica Manea, Rodica Pode ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25911
A NEW PHOTO-FENTON PROCEDURE APPLIED IN OXIDATIVE DEGRADATION OF ORGANIC COMPOUNDS FROM WASTEWATER
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 This paper presents a new photo-Fenton procedure applied in oxidative degradation of organic pollutants using 4-chlorophenol (4-CP) as low biodegradable testing compound. The homogeneous photo-Fenton process was modified by using a photo-catalytic reactor equipped with a steel wire mesh which acts as source for Fe2+ catalyst generation into reaction medium and as heterogeneous catalyst, by iron oxy-hydroxyl compounds formation on the surface. The oxidation process was evaluated by measuring the ... Autori: Adina-Elena Segneanu, Cristina Orbeci, Ion Untea, Mihaela Emanuela Craciun, Rodica Stanescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25864
EVALUATION OF DIFFERENT CONTROL STRATEGIES OF THE WASTE WATER TREATMENT PLANT BASED ON A MODIFIED ACTIVATED SLUDGE MODEL NO. 3
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 The first part of this work presents the development and implementation in the Benchmark Simulation Model No 1 (BSM1) of a modified Activated Sludge Model No 3 (ASM3). The enhanced ASM3 presented in this study has three modifications compared to the original ASM3. The first modification is the representation of the simultaneous heterotrophic biomass growth on the primary substrate and on the internal storage products. Second, nitrification is modeled as a two-step process with nitrite as an inte... Autori: George Simion Ostace, Paul Şerban Agachi, Vasile Mircea Cristea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25865
EVALUATION OF HEAVY METALS TOXICITY ON TWO MICROBIAL STRAINS ISOLATED FROM SOIL: Azotobacter sp. AND Pichia sp.
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 Chromium and cadmium are heavy metals that occur naturally in the environment and especially in soils. Their toxic effect is more pronounced at high concentrations and it depends on the oxidation states. While Cr (III) is considered an essential trace element for the metabolism of living organisms, Cr (VI) has a higher mobility and is easily soluble in soils and can be leached into surface water or groundwater, and taken up by plants. That leads to a toxic and carcinogenic effect to humans via i... Autori: Dumitru Bulgariu, Florian Statescu, Maria Gavrilescu, Mariana Diaconu, Vasile Lucian Pavel ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25866
PHYTOCHEMICAL ANALYSIS OF EXTRACTS FROM INFLORESCENCES OF Calendula officinalis L. SPECIES TREATED WITH MUTAGENE SUBSTANCES
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 The most important argument of this experiment was to demonstrate an increased content of active principles under the influence of some substances (considered in the literature as mutagene), when used in low concentration, do not affect the environment. The purpose of this study was the selection of some treatment variants, which, during the experimentations show the same biosynthetic potential, stabilized or increased. The substances used in the experiment were ethidium bromide at the concentra... Autori: Constantin Leonte, Marius Zaharia, Roxana Vatavu, Teodor Robu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25867
EVALUATION OF ATMOSPHERIC POLLUTION BY USING NATURAL LOW-COST SORBENTS
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 In this study, we have tested the possibility of utilization of three types of natural low-cost sorbents: (Sphagnum moss peat, natural moss peat and alkaline treated moss peat) for the active biomonitoring of air quality from Căliman National Park area (Dorna Basin), during of two months (September – October 2010). The concentrations of some heavy metals (Pb, Cd, Cu, Mn and Fe) in the sorbent samples were used as an indicator of the level of air pollution in the studied region. After expo... Autori: Iulian-Ovidiu Sandu, Laura Bulgariu, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25868
IN SITU STUDY OF THE ELECTRICAL/DIELECTRIC PROPERTIES OF ALUMINA SUPPORTED VANADIA USED AS COMBUSTION CATALYSTS
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 The synthesis of vanadium oxide systems (with 5 and 20 wt% V2O5 loadings) supported on commercial γ-alumina was carried out by a wet impregnation method. The samples were characterized by low-temperature nitrogen adsorption (BET), inductively coupled plasma (ICP) method and by in situ electrical conductance/capacitance measurements. The adsorption of CO was used to investigate the acidic properties of alumina support and V2O5/-Al2O3 catalysts by FTIR spectroscopy. The catalytic acti... Autori: , Cristian Hornoiu, Mariana Scurtu, Monica Caldararu, Niculae I. Ionescu, Tatiana Yuzhakova, Veronica Bratan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25869
REMOVAL OF Cd(II) IONS FROM AQUEOUS SOLUTION BY RETENTION ON PINE BARK
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 Among the different types of waste products tested, the bark of different Pinus species have been identified as a promising class of low- cost sorbents for heavy metal binding. In this context, the potential of Romanian pine bark wastes as green and economical sorbent for cadmium (II) ions removal from aqueous solutions has been tested in batch conditions as function of initial pH, contact time, sorbent dose, metal ion concentration and temperature. The equilibrium data at three different temper... Autori: Anca Miron, Brindusa Robu, Carmen Paduraru, Lavinia Tofan, Roxana Laura Mihailescu Amalinei ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25871
CARBON NANOTUBES COMPOSITE FOR ENVIRONMENTALLY FRIENDLY SENSING
Environmental Engineering and Management Journal › Vol. 11 › Nr. 2 The performances of two types of multi-walled carbon nanotubes-based composite electrodes, i.e., MWCNT-Epoxy (CNTEpoxy) and Natural Zeolite-modified- MWCNT- Epoxy (NZ-CNT-Epoxy) are described in order to use them for electroanalytical application. Both electrodes were synthesized, electrically and electrochemically characterized and tested for the detection of ascorbic acid (AA) in aqueous solutions. The electrochemical characterization using classical potassium ferricyanide method showed a high... Autori: Adriana Remes, Anamaria Baciu, Elida Ilinoiu, Florica Manea, Joop Schoonman, Stephen J. Picken ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25877
MONITORING AND ASSESSMENT OF HERBICIDES REMOVAL BY INDUSTRIAL WASTEWATER TREATMENT
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 Herbicides industry is a large consumer of water, as well as a major wastewater generator, its effluents contain priority organic pollutants in very high concentrations which have severe effects on human health and on the environment due to their toxicity and bio-recalcitrant nature, persistence in the environment and bioaccumulation. A vast number of herbicides and other priority organic pollutants have been found in wastewater effluents, surface water, and drinking water around the world. The ... Autori: Bianca Weinberg, ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25874
THERMAL STABILITY AND SURFACE STRUCTURE OF SnO2-CeO2 IMPREGNATED CATALYSTS
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 Newly prepared SnO2-CeO2 catalyst samples used as depollution catalysts were characterized applying low-temperature nitrogen adsorption (BET), X-ray diffraction (XRD), thermo-gravimetry (TG-dTG) and temperature-programmed reduction (TPR) methods. Pure SnO2 has higher surface area (17 m2/g) than the pure CeO2 (8 m2/g). Addition of organic tin oxide precursor to ceria in amount of 5 wt% slightly decreases the surface area of CeO2 (SSn5-Ce= 7 m2/g). The increase of tin oxide content to 10 and 20 wt... Autori: , Anca Vasile, , Cristian Hornoiu, Jozsef Kovacs, Tatiana Yuzhakova, Veronica Bratan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25875
MEASUREMENTS OF RADIUM CONTENT IN SOME SPRING WATERS FROM ROMANIA
Environmental Engineering and Management Journal › Vol. 11 › Nr. 2 Measurements of radium concentrations in water are important from the health protection point of view, so simple and reliable analytical methods must be available. In this paper we have determined the radium activity concentration in 24 spring waters which are used as potable water reservoirs. For this purpose we used radon emanation technique and also alpha spectrometry method. This work gives details of sample processing, Lucas cell and the methodology used in the emanation method. In the meas... Autori: Alida Timar Gabor, Constantin Cosma, Oana Alexandra Rusu, Robert Csaba Begy, Simina Dreve ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25878
INTEGRATED ULTRASONICATION-ULTRAFILTRATION PROCESS FOR THE TREATMENT OF TEXTILE EFFLUENTS: ASSESSMENT OF OPERATIONAL PARAMETERS
Environmental Engineering and Management Journal › Vol. 11 › Nr. 2 Nowadays, advanced wastewater treatment has become a stringent step for the removal of priority organic pollutants and many technologies have been proposed in order to achieve effluents with a superior quality for recycling or reuse purposes. This research is focused on the possibilities of using an integrated process, comprising 2 stages: the advanced oxidation process of ultrasonication and a membrane separation process, ultrafiltration. The main objective of the study is to assess the efficie... Autori: , Daniela Cailean ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25880
OPTIMIZATION PROCESS OF CADMIUM AND ZINC REMOVAL FROM SOIL BY PHYTOREMEDIATION USING Brassica napus AND Triticales sp.
Environmental Engineering and Management Journal › Vol. 11 › Nr. 2 In this paper, Cadmium and Zinc removal from soil by phytoremediation was investigated. The experiments were carried out with two types of plants, Brassica napus and Triticales sp. Response surface modeling and optimization of Cd and Zn removal rate was performed for each type of plant under controlled conditions, i.e. as a function of Cd concentration, Zn concentration and pH. Although the maximum heavy metal uptake (i.e. 2.4 % Cd removal rate and 1.80 % Zn removal rate, respectively) was obtai... Autori: Corneliu Pohontu, Gabriela Soreanu, Igor Creţescu, Matei Macoveanu, Paula Caraiman Cojocaru ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25881
REAL-TIME MONITORING OF AN URBAN RIVER CONTAMINATED WITH PETROLEUM PRODUCTS
Environmental Engineering and Management Journal › Vol. 11 › Nr. 2 Fluorescence spectroscopy is a promising approach to the characterization of natural aquatic components and organic pollutants, due to its rapid analysis and high sensitivity. Petroleum products had been studied, using fluorescence technique, in numerous occasions, as seawater and soil contaminant or as raw sample. Nevertheless, no complex assessment has been made on fluorescence real–time spectra of freshwater diesel oil contamination. This study reports a 5–days experiment on an urban rive... Autori: Elfrida M. Carstea, Gabriela Pavelescu, Luminita Ghervase, Marina Tautan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25882
WATER POLLUTION REDUCTION BY USING NEW PREMETALATED DYES IN DYEING WOOL
Environmental Engineering and Management Journal › Vol. 11 › Nr. 2 2This study shows the dyeing behaviour and impact over the wastewaters quality resulted from dyeing wool fibres, of a new synthesized premetalated dyes, derived from new acid dye, sodium(E)-2 –((1-amino-4-sulphonatonaphthalen-2-yl)diazenyl)-6- methoxybenzo[d]thiazole- 5 or 7 –sulphonate, as a result of interaction with Ni(II) and Zn(II) ions. In order to characterize the complexed dyes they were studied in both phase: solution and solid phase. The dyeing performances assessment and the envir... Autori: Ion Sandu, Laura Chirila, Maria Marcela Tarlea, Romen Butnaru, Viorica Vasilache ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25886
IMPROVING SOIL QUALITY BY ADDING MODIFIED ASH
Environmental Engineering and Management Journal › Vol. 11 › Nr. 2 Fly ash and fly ash based zeolites are inorganics used for improving soil quality. In the current paper, the hydrothermal modification of fly ash was studied. Three methods have been employed for this purpose. The first method involved the use of an autoclave, where synthesis has been performed at a temperature of 120 0C and a treatment time of 4 to 8 hours. Within the second method, the modification of the ash at a temperature of 600 0C by fusion was carried-out. In this method, a mixture of as... Autori: Corneliu Munteanu, Daniel Bucur, Lacramioara Rusu, Maria Harja, Marinela Barbuta, Ramona Carla Ciocinta ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25885
ASSESSING IMPACTS OF TRIAZINE PESTICIDES USE IN AGRICULTURE OVER THE WELL WATER QUALITY
Environmental Engineering and Management Journal › Vol. 11 › Nr. 2 The herbicide use can be seen as an auxiliary path for new farming methods, providing more advantageous farming and land use capabilities and increasing crop yields. Some of them are quickly degraded but others persist in the environmental compartments being toxic for human health and the environment.The aim of this study was to evaluate the impact of some triazine herbicides from agricultural sources on quality of well and surface water, in two regions of Romania with different agricultural act... Autori: Andreea Dragus, Mihail Simion Beldean-Galea, Radu Mihaiescu, Tania Mihaiescu, Dumitru Ristoiu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25889
EUTROPHICATION MODELLING OF GOLESTI RESERVOIR IN ROMANIA
Environmental Engineering and Management Journal › Vol. 11 › Nr. 2 Global existence of a large percentage of lakes with eutrophication problems (54% in Romania) demands a predictive tool for the quality of these ecosystems. In this context, this paper proposes an eutrophication model that describes the thermal and biochemical behaviour of an eutrophic reservoir. This model was used to study an artificial lake (Goleşti reservoir) located in Romania. The conceptual model concerns a lake, which is considered as a closed aquatic system, and analyze a simply fo... Autori: Gabriela Elena Dumitran, Iulia Rodica Damian, Liana Ioana Vuta ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25890
ANALYSIS AND MANAGEMENT OF SPECIFIC PROCESSES FROM ENVIRONMENTAL ENGINEERING AND PROTECTION BASED ON SUSTAINABILITY INDICATORS
Environmental Engineering and Management Journal › Vol. 11 › Nr. 2 This paper describes the scientific framework established within doctoral and postdoctoral programs designed to contribute to a thorough understanding of the specific processes involved in environmental engineering and protection, as to improve the environmental management and performance in an efficient and sustainable way. A coherent conceptual framework is developed for the analysis and management of some specific approaches in engineering and environmental protection (pollution phenomena, de... Autori: Cristina Ghinea, Daniela Tudorache Fertu, Isabela Maria Simion, Laura Carmen Apostol, Mădălina Petraru, Maria Emiliana Fortuna, Maria Gavrilescu, Petronela Cozma, Raluca Maria Hlihor ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25891
THE MANAGEMENT OF N AND P NUTRITION OF PLANTS USING NITROGEN FIXING AND PHOSPHORUS SOLUBILIZING BACTERIA
Environmental Engineering and Management Journal › Vol. 11 › Nr. 2 The nitrogen and phosphorus management in agricultural systems leads to an increased input of plant nutrients and sustains the soil fertility. Microbes contribute through different mechanisms to nutrient cycles, transforming it available for plants. Isolation of 18 Azospirillum and 18 Azotobacter bacterial isolates was effectuated from the rizosphere and interior roots of the following plants: Carex fusca All., Carex rostrata Stokes., Eriogonum latifolium Sm., Carex elata All., and from Equisetu... Autori: Csaba Dezso Andras, Eva Gyorgy, Eva Laslo, Gyongyver Mara, Rozalia Veronika Salamon, Sarolta Szentes, Szabolcs Lanyi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25894
HEAVY METALS IN THE SOILS OF RODNA MINING AREA, ROMANIA AND ZEOLITE EFFICIENCY FOR REMEDIATION
Environmental Engineering and Management Journal › Vol. 11 › Nr. 2 The present study was carried out to highlight the areas where heavy metal content in the soils from Rodna mining perimeter exceeds normal limits and to attempt to reduce the concentration of free heavy metal ions by using natural zeolite from the Dej tuff. In order to emphasize the heavy metal content and their accumulation in soil in Rodna region, 35 soil samples were collected from the upper and deeper layer (about 0-10 and 10-20 cm depth) and analyzed to determine total and free Cu, Pb and Z... Autori: Ramona Nimirciag ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25900
COMPARATIVE STUDIES ON THE EFFICIENCY OF ALUMINIUM COAGULANTS
Environmental Engineering and Management Journal › Vol. 11 › Nr. 2 An alternative preparation method for PAC (pre-hydrolyzed aluminium chloride with general formula Alm(OH)nCl3n-m) by electrochemical synthesis is presented in this paper. The electrochemically obtained PAC (E-PAC), in which the most effective species of the polymeric Al component were estimated by 27Al RMN method, with properties similar to the properties of a commercially available PAC solution, was successfully generated in a electrochemical reactor. For obtaining as much as Al13 polymer by el... Autori: Adina Pacala, Ciprian Radovan, Ilie Vlaicu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25901
ASSESSMENT OF TOURISM DEVELOPMENT IN ROMANIA: ENVIRONMENTAL ISSUES AND CHALLENGES IN NORTH OF MOLDOVA
Environmental Engineering and Management Journal › Vol. 11 › Nr. 2 Tourism is one of the essential components of population services and a major influence factor for economic and social development. The tourism industry is characterized by a great structural complexity, in multiple forms of this service.This industry can also have an impact on the natural resources and environment in the various tourist destinations, on everyday life of these locations and also on the individuals from those areas, whether rural or urban. Nowadays, tourism faces different challe... Autori: , Elena Elisabeta Pomeanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25903
ENHANCEMENT OF PHENOL OXIDATION BY OZONE IN WASTEWATER. II: KINETIC MODELING
Environmental Engineering and Management Journal › Vol. 11 › Nr. 2 Four processes have been used to enhance the ozonation of phenol in water: I-pH increasing (O3-pH), II- hydrogen peroxide addition (O3- H2O2), III- UV irradiation (O3- UV), and in the presence of both H2O2 and UV; IV-(O3- UV- H2O2). In each of these processes the rate of phenol degradation has two components: direct and indirect.... Autori: Eszter Arany, Ildiko Bartalis, Ilie Siminiceanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25904
OCPS AND PAHS DISTRIBUTION IN DIFFERENT STAGES OF TOMATO GROWING
Environmental Engineering and Management Journal › Vol. 11 › Nr. 2 The presence of pollutants in food raises some serious questions concerning their potential impact on consumers health, being necessary to monitor their distribution in the environment. The present work provides data regarding levels of organochlorine pesticides (lindane, p,p’- DDT, p,p’- DDE, p,p’- DDD, HCB, aldrin, dieldrin, endrin and hepthaclor) and PAHs: acenaphthene (Ace), acenaphthylene (Acy), fluorene (F), naphthalene (Np), anthracene (An), fluoranthene (Fl), phenanthrene (Ph), ben... Autori: Alina Soceanu, Danut Tiberius Epure, Gabriela Stanciu, Simona Dobrinas, Viorica Popescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25905
EFFECT OF AERATION RATE ON DOMESTIC WASTEWATER TREATMENT USING AN INTERMITTENTLY AERATED SEQUENCING BATCH REACTOR (IASBR) TECHNOLOGY
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 Abstract Effects of the aeration rate on nutrient removal from synthetic domestic wastewater using an intermittently aerated sequencing batch reactor (IASBR) were studied at ambient temperature. Two aeration rates, 0.8 and 1 L air/min, were studied. At the aeration-rate of 0.8 L air/min, removals of COD, NH4+-N, total nitrogen (TN) and PO43--P were 84%, 96%, 75% and 99%, respectively. At the aeration rate of 1 L air/min, removals of COD, NH4+-N, TN and PO43--P were 90%, 99%, 70% and 66%, re... Autori: Liam G. Henry, Liwen Xiao, Xinmin Zhan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25941
EFFECTS OF Fe(III) ON DISSIMILATORY FERRIC REDUCTION, NITROGEN AND PHOSPHORUS REMOVAL IN ACTIVATED SLUDGE PROCESS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 Abstract An activated sludge from SBBR (sequencing biofilm batch reactor) reactor filled with Fe0 as filler had been acclimated to Fe(III)rich environment aiming at secure an enrichment culture of iron-reducing bacteria. The dissimilatory Fe(III) reduction ability and its efficiency on the effect of nitrogen and phosphorous removal by dosing different Fe(III) under anaerobic condition were investigated. The mechanism was also proposed based on the results derived from the experiment a... Autori: Jie Li, Juanjuan Feng, Siyuan Zhai, Ya’e Wang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25943
CONTROL MODE OF RURAL NONPOINT SOURCE POLLUTION IN TAI LAKE BASIN, CHINA
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 AbstractEutrophication in Tai Lake Basin is becoming severe in recent years. Although extensive efforts have been made, seeking analternative cost-effective approach to control water pollution in the area is still an urgent priority. In this paper, the reasons led tothe poor control of rural nonpoint source pollution in Tai Lake Basin area were discussed. Thereafter, the paper proposed theways and means to reduce rural nonpoint source pollutants by a case study in Fenshui village along Caoqiao R... Autori: Chuang Zhou, Houhu Zhang, Jingcheng Duan, Yang Yang, Yimin Zhang, Yuexiang Gao ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25945
AEROBIC SLUDGE GRANULATION FOR PARTIAL NITRIFICATION OF AMMONIA-RICH INORGANIC WASTEWATER
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 AbstractPartial nitrification for the biological nitrogen removal (BNR) via nitrite has recently gained interest for treating high-strengthammonium wastewater with low organic matter content. However, stability of partial nitrification is still a challenge in activatedsludge system. In the present study, the technique of aerobic granulation was developed to produce granules for stable nitritation,treating ammonia-rich inorganic influent with 400 mg NH4+-N/L. The morphology, physical properties, ... Autori: An-Jie Li, Xiang-Chun Quan, Xiao-Yan Li, Zhi-Feng Yang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25947
ADSORPTION OF HEXACHLOROCYCLOHEXANE BY RAW AND SURFACTANT MODIFIED MEERSCHAUM
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 AbstractThe adsorption of hexachlorocyclohexane (HCH) by modified meerschaum was studied. The comparison of the meerschaummodified by anion and cation surfactant was conducted to explore their effect on HCH adsorption. The results showed that theabsorbability of HCH by the CTMAB-M (cetyltrimethylammonium bromide-modified) is better than that of SAS-M (sodiumdodecyl sulphonate-modified) because the CTMAB-M has fluffier fibers structure. The addition of amount of adsorbents shouldimprove the adsor... Autori: Chanjuan Gao, Shengke Yang, Wenke Wang, Yaqian Zhao, Yue Zhao ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25948
ADSORPTION OF PHOSPHATE FROM AQUEOUS SOLUTIONS BY THERMALLY MODIFIED PALYGORSKITE
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 AbstractIn this study, palygorskite clay calcinated at different temperatures from 200 to 900 °C was used as adsorbent to removephosphate from aqueous solutions. The crystal structure and the surface property of the thermally modified material wasinvestigated to determinate the relationship between the adsorption capacity of the adsorbent and the changes of the crystalstructure and surface property. The results indicate that palygorskite clay calcinated at 700 °C had the highest adsorptioncapaci... Autori: Chengsong Qing, Chengzhu Zhu, Dong Chen, Jiayuan Wang, Jingjing Xie, Tianhuhu Chen, Xinmin Zhan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25949
TREATMENT OF AN ALKALINE BUTYL RUBBER WASTEWATER BY THE PROCESS OF COAGULATION AND FLOCCULATION - HYDROLYSIS ACIDIFICATION - BIOLOGICAL CONTACT OXIDATION - MBR
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 AbstractWastewater from butyl rubber production is causing an increasing environmental problem due to its large quantity and complexquality. In this paper, two types of wastewaters generated from rubber synthesis, i.e. alkaline wastewater (AW) and cleaning andflushing wastewater (CFW), were investigated. Coagulation and flocculation were firstly applied to remove suspended solids(SS) from the AW. By single factor experiment, the optimum operational conditions were obtained as pH 8, PAC dosage 40... Autori: Lujun Chen, Rui Liu, Wei Li, Wei Zheng, Yan Zhang, Ying Li ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25950
STRUCTURAL EVOLUTION OF HEAT-TREATED COLLOIDAL PYRITE UNDER INERT ATMOSPHERE AND ITS APPLICATION FOR THE REMOVAL OF Cu(II) ION FROM WASTEWATER
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 AbstractIn this paper, we report a study on structural evolution, magnetic susceptibility and arsenic content of colloidal pyrite fromXinqiao deposits in Tongling, Anhui Province, China. The pyrite was treated under N2 atmosphere and charaterized with X-raypowder diffraction (XRD), field emission scanning electron microscopy (FE-SEM), magnetic susceptibility analysis, and atomicfluorescence spectroscopy (AFS). We observed that heating of colloidal pyrite in N2 atomosphere did not change the crys... Autori: Dong Chen, Ping Li, Tianhu Chen, Xiao Zhu, Yadan Shi, Yan Yang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25951
COMPOSITE VEGETABLE DEGRADATION AND ELECTRICITY GENERATION IN MICROBIAL FUEL CELL WITH ULTRASONIC PRETREATMENT
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 AbstractVegetable waste was used as the fuel of a two-chamber microbial fuel cell (MFC) for simultaneous power recovery and wastedegradation. Effects of ultrasonic pretreatment, organic loadings, anolyte pH adjustment on the MFC performance wereinvestigated. Results showed that higher power generation and organic compounds removal efficiency were achieved in theMFCs with the vegetable waste pretreated with ultrasonication at >1.0W/mL compared to the un-pretreated control. A maximumvoltage of ... Autori: Kun Tao, Xiangchun Quan, Yanping Quan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25953
OCCURRENCE AND RISK ASSESSMENT OF ESTROGENS AND ANTIINFLAMMATORIES IN BAIYANGDIAN LAKE, NORTH CHINA
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 AbstractEstrogens and anti-inflammatories can pose adverse effects on human health and wildlife. This paper investigated four estrogens(estrone, E1; 17β-estradiol, E2; estriol, E3; 17α-ethynylestradiol, EE2) and three anti-inflammatories (ibuprofen, ketoprofen andnaproxen) by solid-phase extraction (SPE) and liquid chromatography tandem mass spectrometry (LC-MS/MS) in BaiyangdianLake during the dry (April) and wet seasons (September). These compounds were mostly detected at low levels ... Autori: Jianghong Shi, Jinling Cao, Ting Bo, Xiaowei Liu, Yingxia Li ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25955
SHALLOW GROUNDWATER HYDRO-CHEMICAL EVOLUTION AND SIMULATION WITH SPECIAL FOCUS ON GUANZHONG BASIN, CHINA
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 AbstractGroundwater hydrochemical evolution has influences on the rational use and conservation of water resources. This paper whichtakes MapGIS as the platform is aimed at demonstrating the evolution of shallow groundwater hydrochemistry in Guanzhongbasin (China) by adopting mathematical statistics, ratios of ion pair equivalents, geochemical simulation. The direction ofevolution is dependent on the geological, geomorphological, and hydrogeological conditions of the study area. The spatialdistr... Autori: Hua Tian, Lei Duan, Wenke Wang, Xiaoting Yang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25956
APPLICATION OF GIS IN REGIONAL ECOLOGICAL RISK ASSESSMENT OF WATER RESOURCES
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 AbstractThe regional ecological risk assessment of water resources has spatial, nonlinear and stochastic characteristics. GIS technologycan handle large volumes of spatial information, conduct spatial analysis and spatial data management operations. It visuallydisplays the distribution trend of environmental factors and the relationship between topology and regional water ecological riskpattern. This paper presents the five stages of the application of GIS in the regional ecological assessment o... Autori: Lin Gang Wang, Ning Lian Wang, Xiao BoWu, Ya Qian Zhao, Yin Ge Liu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25958
GEOCHEMICAL CHARACTERISTICS OF REDUCED INORGANIC SULFUR IN A COASTAL ENVIRONMENT, BOHAI BAY, CHINA
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 Geochemical cycling of reduced inorganic sulfur in sediments may affect water quality. This study investigated the reducedinorganic sulfur distribution and environmental behaviour in superficial sediments in different watersheds and coastal zones inBohai Bay, China. Acid volatile sulfur (AVS), chromium (II)-reducible sulfur (CRS) and elemental sulfur (ES) distributed insurface sediment were quantified. Total organic carbon and total nitrogen were presented in higher concentrations in the fluvial... Autori: Robert Mortimer, Simon Bottrell, Wenjing Shi, Yanqing Sheng ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25959
ECOLOGICAL IMPACTS INDUCED BY GROUNDWATER AND THEIR THRESHOLDS IN THE ARID AREAS IN NORTHWEST CHINA
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 AbstractBased on the field survey, this paper analyzes the relationship between groundwater and ecological environment in arid andsemiarid areas in northwest China. Groundwater in the arid and semiarid areas is a natural resource with economic and ecologicalvalues. The concept of the ecological value of groundwater is firstly presented. This ecological value can be reflected in fouraspects: (1) the maintenance of base flow in rivers and areas of lakes and wetland; (2) the supply of physiological... Autori: Donghui Cheng, Jinling Kong, Lei Duan, Wenke Wang, Zeyuan Yang, Zhoufeng Wang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25962
CHARACTERISTICS AND FEASIBILITY STUDY OF SEWAGE SLUDGE FOR LANDSCAPING APPLICATION IN XI’AN, CHINA
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 AbstractBy investigating the basic physicochemical characteristics, nutrients (nitrogen, phosphorus and potassium) and heavy metalconcentrations of the excess sludges from four wastewater treatment plant (WWTP) in Xi’an city, the feasibility of applyingsewage sludge to landscaping in Xi'an was studied. The results showed that the basic physicochemical properties of sewagesludge satisfy the requirement of most plants growth. The sewage sludges are rich of organisms, nitrogen and phosphorus, butre... Autori: Bohan Yin, Qin Zheng, Rixia Zhang, Sheping Wang, Xinan Liu, Zhengliang Yang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25964
CHINA’S WATER MANAGEMENT – CHALLENGES AND SOLUTIONS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 AbstractChina has experienced enormously rapid development since the open door policy introduced in 1979. Population has increasedby 30% to 1.3 billion, and the annual GDP growth rate was 9.8 % in the last few years. However, frequent water disasters inrecent years have caused significant damages to China’s regional growth and societies. There are huge contemporary challengesfor Chinese water resource management. In this paper, we examine three major challenges for China’s water resourcemanageme... Autori: Dabo Guan, Faith Ka Shun Chan, Joseph Holden, Yanan Jiang, Yaqian Zhao ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25966
RADIATION-INDUCED DECOMPOSITION AND POLYMERIZATION OF POLYVINYL ALCOHOL IN AQUEOUS SOLUTIONS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 AbstractPolyvinyl alcohol (PVA) is a typical refractory organic pollutant with low biodegradability and high molecular weight. Thispaper presents data on the radiolysis of PVA in aqueous solutions by using ionizing radiation. Response surface methodologywith Box-Benhken design of experiment was applied to analyze the interactions among initial concentration of PVA, absorbeddose, and initial pH of aqueous solutions on PVA removal efficiency. 9.4-89.4% PVA was removed based on differentcombination... Autori: Jianlong Wang, Jinping Tian, Lujun Chen, Shijun He, Weihua Sun ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25967
EDITORIAL A SPECIAL ISSUE ON PROGRESS IN ENVIRONMENTAL ENGINEERING, BIOTECHNOLOGY AND MANAGEMENT IN THE FRAME OF KNOWLEDGE-BASED SUSTAINABLE ECONOMY
Environmental Engineering and Management Journal › Vol. 12 › Nr. 8 “The Exploratory Workshop „Progress inEnvironmental Engineering, Biotechnology andManagement in The Frame of Knowledge-BasedSustainable Economy” took place in the contextwhen worldwide research shows that the currentindustrial system supports a population that useresources and generates waste, consuming the Earth'ssupply, but who’s biocapacity is far outweighed bythe increased demand of products for a developmentsystem that often works on unsustainable bases.Today’s challenge is the integration ... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25969
INDUSTRIAL AND COMMUNAL SUSTAINABLE WASTE MANAGEMENT IN HUNGARY
Environmental Engineering and Management Journal › Vol. 12 › Nr. 8 AbstractConsumption and related waste production is an integral part of our daily lives. The waste generation worldwide depends on theeconomic strength of the given region/country, and it increases from year to year. More and more attention is drawn to the re-use,recycling, reutilization of the waste which are driven mainly by environmental concerns and economic interests. Regional wastemanagement systems have been established in Hungary with the support of EU funds, which process the waste acco... Autori: Ákos Rédey, , Attila Sarkady, László Dióssy, Róbert Kurdi, Tatiana Yuzhakova ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25970
VOLUNTARY AGREEMENTS AS A WAY TO STIMULATE INDUSTRIAL ENVIRONMENTAL MANAGEMENT AND THEIR CONDITIONS FOR SUCCESS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 8 AbstractNumerous governments have adopted innovative policy instruments to deal with important environmental policy challenges.Various forms of negotiated instruments may offer the potential to improve on environmental performance beyond whatregulation alone can accomplish. Dutch covenants, which represent negotiated agreements with sectors of industry as targets ofbehavioral change in terms of mitigation of pollution, waste minimization and sustainable products and processes, provide auseful sa... Autori: , Kris Lulofs, Laura Franco, Theo de Bruijn, Yanyan Xue ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25972
ASPECTS ON POLYMER-SOLVENT EQUILIBRIUM AND DIFFUSION IN POLYMERIC MEMBRANES
Environmental Engineering and Management Journal › Vol. 12 › Nr. 8 AbstractThe transport of gases and solvents in polymeric membranes is an important phenomenon with many technical applications, suchas the mixture separation using polymeric membranes, the polymeric membrane preparation, the polymer devolatilization and theselection of appropriate polymeric membranes for a certain process. In most membrane separation operations and manufacturing,equilibrium and diffusion data are required.Useful information on equilibrium and diffusion can be obtained from the s... Autori: Ciprian Constantin Negoescu, Eugenia Teodora Iacob Tudose, Ioan Mămăligă, Nicoleta Bunduc ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25975
CO2 CAPTURE BY BIOMIMETIC ADSORPTION: ENZYME MEDIATED CO2 ABSORPTION FOR POST-COMBUSTION CARBON SEQUESTRATION AND STORAGE PROCESS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 8 AbstractThe huge emission of greenhouse gases from fossil-fuelled power plants is emphasizing the need for efficient Carbon Captureand Storage (CCS) technologies. The biomimetic CO2 absorption in aqueous solutions has been recently investigated as apromising innovative alternative for post-combustion CCS. The carbonic anhydrase (CA) - a broad group of ubiquitous enzymes– may catalyse the CO2 hydration reaction and then to promote CO2 absorption rate into aqueous solutions. Nevertheless theresear... Autori: Antonio Marzocchella, Giuseppe Olivieri, Maria Elena Russo, Piero Salatino ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25976
IMPROVING ENVIRONMENTAL POLICY ENFORCEMENT
Environmental Engineering and Management Journal › Vol. 12 › Nr. 8 AbstractEnforcement is a crucial final step in any policy process, including environmental policies. Ideally policy formulation issubsequently implemented and enforced. Enforcement is needed to make sure that the envisioned effects are realized in the end.The questions we put forward in this paper are what the meaning of enforcement is; how enforcement can be put on the politicaland administrative agenda; what difficulties are to be countered when strengthening enforcement at the local level. We... Autori: , Theo de Bruijn, Vera Vikolainen ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25980
REDUCING EMISSIONS OF GREENHOUSE GASES FROM MUNICIPAL LANDFILLS-BETWEEN THEORY AND REALITY. MITIGATION OF METHANE EMISSIONS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 8 AbstractMethane landfill emissions are a general concern and should be estimated for taking the proper measures for global warmingmitigation. The European legislation is supporting all techniques that avoid, reduce or treat CH4 emissions. One of the maindirections is reducing the quantities of biodegradable waste disposed in landfills. The efforts for GHG emissions reduction andalso compliance with European legislation in the field of waste management does not mean only putting in place some sta... Autori: Liliana Bobirica, Rodica Stanescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25984
MUNICIPAL SOLID WASTE MANAGEMENT AND TREATMENT OF EFFLUENTS RESULTING FROM THEIR LANDFILLING
Environmental Engineering and Management Journal › Vol. 12 › Nr. 8 AbstractEU policy on waste management stresses the importance of an integrated approach to waste management, which includesconstruction of waste disposal facilities with prevention of waste generation and recycling, in line with management hierarchy:prevention of waste and its negative impacts; recovery of waste through recycling, reuse, safe final disposal of waste where thereis no possibility of recovery.This paper address the issue of municipal waste management and the impacts generated into ... Autori: Ana-Maria Şchiopu, Cristina Ghinea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25987
EDITORIAL - A SPECIAL ISSUE DEDICATED TO - ENVIRONMENTAL CONCERNS ON ELECTROMAGNETIC COMPATIBILITY AND ENGINEERING IN MEDICINE AND BIOLOGY
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 This special issue of EnvironmentalEngineering and Management Journal is dedicated tointerdisciplinary research and discusses multipleresults addressing environmental issues inElectromagnetic Compatibility (EMC) andEngineering in Medicine and Biology (EMB) areas.Some of the most significant researchdirections considered in this issue entail theelectromagnetic pollution together with a survey ofelectromagnetic environment in order to analyze andquantify the biological and health effects ofelectro... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25990
MODELING DEVICES SENSITIVITY ASSOCIATED TO THE SUSCEPTIBILITY OF ESD PHENOMENA
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 AbstractThe electrostatic discharge (ESD) event is a severe source of interference that can produce damages in any electronic system. Afull-body of an ESD generator is modeled using the Cadence IC 5.3 package software in order to reproduce the referencedischarge current assured by the standard specifications. The factors that introduce electromagnetic radiations into the systemshave also been investigated. Several tests based on proper matches between the parameters of the antenna were computed ... Autori: Alexandru Salceanu, Ana-Maria Nicuta, Oana Beniuga, Paul Bicleanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25993
MITIGATION OF POWER FREQUENCY MAGNETIC FIELD NEARBY POWER LINES USING RECTANGULAR FRAMES
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 AbstractThe paper outlines a technique to mitigate the power frequency magnetic field produced in its vicinity by the transport anddistribution power lines. The technique consists in introduction below the line conductors of a passive loop of rectangular shape.Due to the induced currents in the rectangular frame, the total magnetic field below this structure is significantly reduced. Themethod’s efficiency depends by the line conductor’s configuration and also by the dimensions of the frame. The... Autori: Călin Munteanu, Emil Merdan, Ioan T. Pop, Sorin Deleanu, Vasile Topa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25994
IMPLEMENTING EUROPEAN METHODOLOGIES TO ASSESS ENVIRONMENTAL ELECTROMAGNETIC FIELD LEVELS: SOME DIFFICULTIES AND SOLUTIONS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 AbstractDuring the last decade, European methodologies on electromagnetic field measurement and human exposure assessment havebeen extensively developed and improved. At present, there is a large number of complex technical standards dedicated to variousexposure situations. The implementation of the new methodology in the national practice might be difficult, expensive and timeconsuming. Taking into account the methodological change, we analyzed some practical difficulties that might occur and w... Autori: Cristian Goiceanu, Eugenia Dănulescu, Răzvan Dănulescu, Raluca Dănulescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25999
REPRESENTATION OF 3D ATMOSPHERIC DATA USING A MULTI-STAGE VISUALIZATION PIPELINE
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 AbstractThe representation of relevant information from data generated through atmospheric imaging is of substantial importance toenvironmental sciences, meteorology, as well as in weather hazard predictive models for disaster prevention. As the techniquesfor the acquisition of such data have progressed and grown in complexity, so have the visualization algorithms required to processthe related data and to produce images or animations of the underlying information. To this extent, we present a g... Autori: Marius Gavrilescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26001
REDUCTION OF POWER LINE INTERFERENCES FROM ELECTROCARDIOGRAPHIC SIGNALS BY APPLYING ADAPTIVE FILTERING ON FIELD PROGRAMMABLE GATE ARRAY CIRCUITS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 AbstractThe paper presents an extended implementation of an adaptive filter structure for electrocardiographic (ECG) signals denoisingwhich is implemented on Field Programmable Gate Array (FPGA) circuit. The proposed FPGA adaptive filter structure can beused to clean in real-time the ECG signals from power line interferences. In order to update the adaptive filter weights, the LeastMean Square (LMS) algorithm is used. The discrete forms of the filter structure and adaptive algorithm are presente... Autori: Cristian Győző Haba, Ioan Tudosa, Narcis Adochiei, Valeriu David ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26002
ANALYSIS OF BRAIN ACTIVITY IN THE CASE OF MAGNETIC FIELD EXPOSURE
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 AbstractThis paper presents some results of the brain electrical activity’s analysis in case of the magnetic stimulation. It was recorded andanalyzed the electroencephalography (EEG) signal during magnetotherapy procedures in abdominal region, considering this factlike as a possible exposure of subject at magnetic field. The recordings of EEG signals are performed on 13 healthy volunteers inthree conditions (before, during and after magnetic stimulation), using three types of sinusoidal pulses. ... Autori: Călin Corciovă, Doru Andriţoi, Mariana Ciorap, Radu Ciorap, Valeriu David ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26005
RECORDING AND PROCESSING ELECTROCARDIOGRAPHY SIGNALS DURING MAGNETOTHERAPY PROCEDURES
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 AbstractThis paper presents the results of electrocardiography (ECG) signals recording when the subjects were exposed to magnetotherapy procedure, with different magnetic field pulses. After the time domain and frequency domain representations of therecorded signals, there were trying to recover ECG signals waveforms, especially those during magneto therapy. In order toidentify possible changes in ECG signals during the exposure to magnetic fields, there were also determined the R-R intervalvari... Autori: Doru Andriţoi, Marius Branzila, Radu Ciorap, Valeriu David ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26006
IDENTIFICATION OF PSYCHOLOGICAL STRESS BY ANALYZING ELECTROCARDIOGRAPHIC SIGNAL
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 AbstractIt is already demonstrated that mental or psychological stress can affect human health, since it is a major risk factors for numerouscurrent diseases such as: high blood pressure, congestive heart failure, coronary diseases, stroke, causing often sudden death.These diseases are particularly dangerous in the case of car drivers, since they have to make accurate and fast decisions evenunder stress condition. Frequently, the stress can be detected by different methods with various degrees o... Autori: Alexandru Păsărică, Cristian Rotariu, Hariton Costin ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26008
ENVIRONMENTAL FACTORS ASSOCIATED WITH DYSPHONIA IN PROFESSIONAL VOICE USERS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 AbstractGastro-Esophageal Reflux Disease (GERD) seems to be frequently associated with laryngeal lesions and the occurrence ofdisphonia. The aim of the study was to evaluate the environmental factors associated with dysphonia in professional voice users.We prospective studied 50 intense voice users’ subjects (actors, singers, teachers, priests) with dysphonia in order to identify theenvironmental factors which may be involved in the alteration of voice. We demonstrated the importance of the risk... Autori: Anca Ciubotaru, Bogdan Mihail Cobzeanu, Mihail Dan Cobzeanu, Monica Voineag, Octavian Dragos Palade, Vasile Liviu Drug ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26009
A CLEAR SKY IRRADIATION ASSESSMENT USING THE ESRA MODEL AND SRTM DATABASE
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 AbstractThis paper describes a model and an algorithm used to develop a solar radiation database for Romanian territory. In order toobtain this database, two main steps were performed. In the first part, a clear sky solar radiation model was presented, inaccordance with the latest models published in European Solar Radiation Atlas. After this, a digital elevation model has beendeveloped, based on the Shuttle Radar Topography Mission database, which, together with the previously mentioned model,a... Autori: Ciprian Nemes, Marcel Istrate ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26010
ASSESSMENT OF SYNERGIC REGULATORY ACTIONS OF SPRUCE BARK EXTRACT AND DEUTERIUM DEPLETED WATER ON MAIZE (Zea mays L.) CROPS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 AbstractThe aim of this study was to evaluate the effect of polyphenolic extract and deuterium depleted water (DDW) as bioregulators inmaize (Zea mays L.) plant cultivation. The aqueous extract obtained from spruce bark (two levels of concentration), pure DDWand DDW in combination with spruce extract were used. The test solutions were applied by spraying and the maize plant growthand alelopatic effect on the development were studied. The following specific plants parameters were monitored: growt... Autori: Corneliu Tănase, Irina Volf, Valentin I. Popa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26012
Environmental Engineering and Management Journal - Vol 12, No 6
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 • STUDIES ON HEAT RECOVERY FROM CELLULOSIC TEXTILES FINISHING WASTEWATER • ASSESSMENT OF SYNERGIC REGULATORY ACTIONS OF SPRUCE BARK EXTRACT AND DEUTERIUM DEPLETED WATER ON MAIZE (Zea mays L.) CROPS • LUNG CANCER RISK INDUCED BY RESIDENTIAL RADON IN CLUJ AND ALBA COUNTIES, ROMANIA • A CLEAR SKY IRRADIATION ASSESSMENT USING THE ESRA MODEL AND SRTM DATABASE • ENVIRONMENTAL FACTORS ASSOCIATED WITH DYSPHONIA IN PROFESSIONAL VOICE USERS ... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26014
ON THE INFLUENCE OF BED FORMS ON FLOOD LEVELS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractFlood inundation modelling and flood risk mapping are primary cornerstones of flood risk assessment and management.Modelling activities generally assume that the morphology of the conveyance does not change, which certainly is not true foralluvial rivers. River bed elevations can quickly change during flood events. Flood water can induce different bed-forms (ripples,dunes, plain bed, etc.), which affects the flow resistance and as a result the flood water level. As a result integrating t... Autori: Biswa Bhattacharya, Ioana Popescu, MdShamim Shams ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26016
EMBANKMENT FAILURE MODELING USING THE HR BREACH MODEL
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractThe HR BREACH model is a physically based numerical model for the simulation of breach initiation and formation throughembankment dams, dykes, and flood embankments. The model is used for the analysis of homogenous as well ascomposite/zoned embankments. Simulation can also include the effect of surface protection such as grass or rock blocks. Twobreach failure modes are available: failure by overtopping and failure by piping. Breach growth can proceed through surfaceerosion or head-cut e... Autori: Andreja Jonoski, Ioana Popescu, Mark Morris, Mohamed Hassan, Tseganeh Gichamo ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26017
ANALYTICS FOR SUPPORTING URBAN WATER MANAGEMENT
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractWater distribution networks are complex systems that require innovative technological solutions enabling an integrated andrational water resource management. This paper presents the application of data analytics approaches on flow and pressure data,continuously measured at crucial points of the network, for improving efficiency of leak localization. The general goal is toreduce time and costs for physical check and consequent rehabilitation activities.Although the general benefits provid... Autori: Antonio Candelieri, Enza Messina, Francesco Archetti ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26018
DSA ELECTRODES FOR TREATING PHARMACEUTICAL EFFLUENTS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractIn the last years many papers have reported about the occurrence of the pharmaceuticals in the surface waters and theirundesirable effects upon the aquatic life. Most of pharmaceuticals pass through the wastewater treatment plants unchangedbecause they are biorefractory compounds and as a result they enter the water bodies. Therefore, it is necessary to improve thebiodegradability of pharmaceuticals effluents (PhEs) before their discharge in the sewerage systems. The aim of this paper wa... Autori: Carmen Lazău, Florica Manea, Monica Ihos ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26021
COMBINED CATALYTIC OXIDATION AND ADSORPTION OF PRIORITY ORGANIC POLLUTANTS FOR WASTEWATER RECYCLING
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractThe increased concentrations of priority pollutants in wastewaters have imposed the completion of conventional treatment withadvanced treatment stages (such as catalytic oxidation, membrane processes, adsorption, ion exchange, etc.) for their removal bychemical degradation and/or physical separation.In this study, 4-chlorophenol (4-CP) is proposed as model-pollutant for the priority organic pollutants present in syntheticwastewaters and several processes which can act as advanced treatme... Autori: Carmen Teodosiu, Corina Petronela Musteret, Daniela Arsene, Daniela Cailean, George Bârjoveanu, Petru Apopei, Roxana Elena Apreutesei ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26022
REMOVAL OF TWO INDUSTRIAL DYES FROM AQUEOUS SOLUTIONS USING HYDROTALCITE-LIKE ANIONIC CLAYS AND THEIR DERIVED MIXED OXIDES AS HIGHLY EFFICIENT PHOTOCATALYSTS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractMultifunctional materials based on iron substituted anionic clays and their derived mixed oxides owning specific porousproperties and textural characteristics are synthesized, characterized and tested as photocatalysts in the process of the azo-dyesdegradation from aqueous solutions. The features of X-ray diffraction patterns point out the modification of the lattice parameterswhen Fe3+ is substituted Al3+ in the brucite like layer. N2 adsorption-desorption analysis reveals specific poro... Autori: Carmen Gherasim, Gabriela Carjă, Magda Puşcaşu, Mihaela Bîrsanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26024
KINETIC STUDY OF HEXAVALENT CHROMIUM REMOVAL FROM WASTEWATERS BY ION EXCHANGE
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractIn spite of the fact that concern on water quality protection raised in the last decades heavy metals pollution still represents agreat threat for both human health and environment quality. Ion exchange proved to be an effective technique for industrialwastewaters treatment, as long as it ensures an effective recovery of valuable compounds. The main purpose of this work is toassess the performances of a commercial ion resin sort (a strong basic anionic resin – VIONIT AT 21), to remove ch... Autori: Alexandra Raluca Miron, Cristina Costache, Cristina Modrogan, Dumitru Giani Apostol, Oanamari Daniela Butucea, Redha Kouachi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26025
COPPER IMPREGNATED ACTIVATED CARBON FOR THE TREATMENT OF SULPFUROUS WATERS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractThis paper deals with the experimental investigation related to removal of hydrogen sulfide from simulated groundwater byadsorption/oxidation on activated carbons. Carbonaceous adsorbents were synthesized from peach stones by physical-chemicalactivation method and modified by oxidation following impregnation with Cu2+ by ion-exchange method. Obtained carbonaceousadsorbents were characterized by specific surface area and micropore volume. Surface chemistry properties were evaluated usingB... Autori: , , Vasile Rusu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26026
BENTONITE SYNTHETIC WATER BEHAVIOR DURING COAGULATION-FLOCCULATION PROCESS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractThe aim of this work is to characterize the flocculation process of a bentonite synthetic suspension with characteristics close toBega River from Timisoara, Romania. The time stability of the synthetic suspension was firstly investigated. After a few days ofcontinuous mixing a stable suspension was reached, stability being confirmed by monitoring the main physicochemicalparameters (pH, temperature, turbidity, dissolved organic carbon and initial particle size). In order to determine the ... Autori: Alain Liné, Cosmina-Mariana Militaru, Ligia Barna, Teodor Todinca ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26027
SUSTAINABILITY ISSUES AND TOURISM DEVELOPMENT IN SUCEAVA COUNTY, ROMANIA
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractMaking tourism more sustainable, means not only to control and manage the negative environmental impacts of this sector.Tourism is unique in the sense that it can provide both economic and social benefits for local communities and it can alsostrengthen the awareness and support for environmental conservation. The purpose of this paper is to provide a framework formore sustainable tourism development policies, but also a set of instruments to implement these policies. We used in this stud... Autori: Carmen Teodosiu, Elena Elisabeta Pomeanu, Eric Boutin, Simona-Andreea Ene Popa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26031
UNMODIFIED/TIO2-MODIFIED CARBON NANOTUBES COMPOSITE ELECTRODES FOR PENTACHLOROPHENOL DETECTION FROM WATER
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractIn this work, cyclic voltammetry (CV) and differential-pulsed voltammetry (DPV) were used to detect pentachlorophenol (PCP)at two types of multi-walled carbon nanotubes (CNT)-based composite electrode, i.e., TiO2-modified-CNT-Epoxy (TiO2-CNTEpoxy)and CNT-Epoxy in 0.1 M sodium sulphate solution supporting electrolyte. The electrochemical behaviour of theelectrodes was investigated in the absence and presence of UV irradiation. A single oxidation peak at a potential value of about+1 V vers... Autori: , Ágnes Jakab, Aniela Pop, Cornelia Bandas, Florica Manea, Joop Schoonman, Rodica Pode ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26033
RECOVERY OF PRECIOUS METALS FROM WASTE ELECTRONIC EQUIPMENT
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractPrinted circuit boards-PCBs are particularly rich in copper and precious metals. Recoveries of metals in our work started withtests for electrodeposition of Au, Ag and Cu from synthetic solutions on graphite and copper electrodes. Processes were studiedusing cyclic voltammetry in ranges: (-1200)-500 mV and (-800)-(-200) mV and (-400)-1400 mV. Different supportingelectrolytes like: H2SO4 0.5M, HCl 0.1M and HNO3 0.1M were used. Electrodeposition of studied metals from real solutions wasfol... Autori: Adina Căta, Cristian Tănasie, Daniel Boc, Firuţa Fiţigau, Mariana Nela Stefănuţ, Paula Sfîrloagă, Raluca Pop, Zoltan Űrmösi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26036
CHALLENGES FOR 2D WATER QUALITY MODELLING OF LAKE TAIHU IN CHINA
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractLake Taihu is a shallow, wind-driven lake where eutrophication is always a serious problem. The study presented hereininvestigates the effect of wind on the eutophication of the lake, by using a two-dimensional (2D) hydrodynamic model coupledwith a 2D water quality model. The 2D water quality model looks in particular at the water quality situation of Lake Taihu in theyear 2008 and predicts future changes in the algae bloom situation. The Delft3D modelling tool was used to build thehydro... Autori: Arthur Mynett, Chao Yue, Ioana Popescu, Leo Postma, Quan Pan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26037
HYBRID MATERIALS FOR THE REMOVAL OF ORGANIC COMPOUNDS FROM WATER
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractWater quality is an inportant concern for the ecosystem state from a particular region. Since the continuous urban and economicdevelopment induces a negative impact on entire hydrological cycle, this study investigates the water quality of a Romanian lake,located in the Surduc area - Timis County. This perimeter has undergone significant economic development in the past twodecades due to increased tourism potential and the number of holiday residences.We proposed hybrid materias for the ... Autori: Adina-Elena Segneanu, Cornelia Bandas, Florentina Cziple, Ioan Grozescu, Paula Sfîrloagă, Titus Slavici ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26040
A NEW CONCEPTUAL FRAMEWORK FOR ENVIRONMENTAL DECISION BASED ON FRACTAL PHILOSOPHY
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractThe expression „environmental decision” cannot be explained or summarized by a simple formula containing all the ideasfocused on it.This paper aims to develop a conceptual framework for environmental decision (at organizations level) using fractal paradigmphilosophy in its construction, with the purpose to bring order and simplicity for this type of decision. The study is based on theanalysis of several environmental documentations (existing at the level of large organizations located in... Autori: Abdessamad Kobi, Christian Robledo, Ionuţ Viorel Herghiligiu, Mihaela Luminiţa Lupu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26043
PHYTOEXTRACTION OF HEAVY METALS FROM INDUSTRIALLY POLLUTED ZONE USING Lolium perenne AND Lemna minor
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractThe paper intends to contribute to the stages of bioremediation technologies elaboration, by means of experiments and efficiencydemonstrations of adequate biological depollution and ecological reconstruction methods. During the 2009-2011 period, heavymetals and metalloids, etc phytoextraction tests were performed with Lolium perenne L, from tailing samples collected fromwaste heaps and tailings dams of the mining exploitations (Rodna, Bistriţa–Năsăud, Fundu-Moldovei, Sucea... Autori: Alexandru Crihan, Alin Bolonyi, Bianca Malschi Florian, Cecilia Roman, Dana Malschi, Dorian Brăhaiţa, George Ghira, , Marin Şenilă, Mirela Miclean ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26044
EDITORIAL - A SPECIAL ISSUE DEDICATED TO ACHIEVEMENTS AND PROSPECTS IN HYDROTECHNICAL, GEODESY AND ENVIRONMENTAL ENGINEERING
Environmental Engineering and Management Journal › Vol. 12 › Nr. 4 In 2012, the Faculty of Hydrotechnics,Geodesy and Environmental Engineering of The"Gheorghe Asachi" Technical University of Iasi,Romania celebrated 50 years of education in the fieldof hydraulic engineering at the Polytechnic Instituteof Iasi.In 1948, in the same time with the EducationReform in Romania, in Galati, the Faculty ofHidrology was founded. At the same time, studentswho were attending the Rural EngineeringSpecialization in Bucharest were also transferred tothe new established Faculty.... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26048
ASSESSMENT OF THE IMPACT OF RIVERBED DESIGN ON WATER QUALITY – THE CASE STUDY OF BAHLUI RIVER, IAŞI, ROMANIA
Environmental Engineering and Management Journal › Vol. 12 › Nr. 4 AbstractIn 2010 in the area of Iasi city, Romania started the “Water-course regulation of Bahlui River, County of Iaşi” a project which inits first phase of development. It has as the main purpose to improve stream flow capacity and to guarantee the defending againstflood. Also, the project aim at developing a section of approximately 2.5 km located between the Stone Bridge (km 14+073) andTudor Vladimirescu Bridge (km 11+615) for recreational purposes. In order to obtain water storage, it i... Autori: Catrinel-Raluca Giurma-Handley, Costel Boariu, , Tomi-Alexăndrel Hrăniciuc ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26050
ANALYSIS OF DEFORMATIONS IN CARTOGRAPHIC PROJECTIONS USED IN CADASTRAL WORKS PERFORMED IN THE CITY OF IASI
Environmental Engineering and Management Journal › Vol. 12 › Nr. 4 AbstractThe geodetic, photogrammetric and topographic works necessary for the introduction of cadastre were performed in the city ofIasi in a series of various coordinate systems depending of the cartographic projections used in different periods of time. In a firstphase (1951-1973) the creation and the organization of topographical plans relied on the coordinate system of the LocalStereographic Projection - Iasi with the central point at Golia and the Gauss - Krüger Conformal Transverse Cylindr... Autori: Adrian Popia, Ersilia Oniga, Valeriu Moca ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26060
METRIC AND NON-METRIC CAMERAS CALIBRATION FOR THE IMPROVEMENT OF REAL-TIME MONITORING PROCESS RESULTS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 4 AbstractIn recent years non-metric digital cameras have known a great development, being used in wide applications, such as: real timemonitoring and preservation of cultural heritage, the shoreline dynamics study, the wave movement for costal protection, soilerosion, etc. Clasic photogrammetry with the use of metric cameras are still of great use in areas such as architecture andenvironmental imaging. An old problem occurs when we want to extract metric information from our environment using clo... Autori: Ersilia Oniga, Maximilian Diac ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26061
EFFECTS OF HEAVY METALS ON Lepidium sativum GERMINATION AND GROWTH
Environmental Engineering and Management Journal › Vol. 12 › Nr. 4 AbstractBasic principles for assessing phytotoxicity are the same whether the test compound is a heavy metal, herbicide, fungicide,insecticide or other toxic compounds. The difference lies not in the method of evaluation, but in the experimental program andworking methodology.In this paper the phytotoxic effects of heavy metals, Cr (VI) and Cd (II) on plants germination and growth were studied. Stocksolutions of the two heavy metals were prepared at a concentration of 1000 mg/L, in distilled wat... Autori: Dana Luminiţa Sobariu, , Maria Gavrilescu, Mariana Diaconu, Vasile Lucian Pavel ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26062
SOIL STRUCTURE AND WATER-STABLE AGGREGATES
Environmental Engineering and Management Journal › Vol. 12 › Nr. 4 AbstractThe stability of soil aggregates is an indicator of soil structure. Soil acidity affects soil structure stability. Soil acidity has twocomponents: active acidity and exchangeable acidity. In natural conditions, each soil type has a certain level of acidity, which isgiven by its composition, natural vegetation, the chemical composition of precipitations and other factors that cause changes overtime in soil pH. Acidic soils are characterized by physical, chemical and biological properties ... Autori: Dorin Cotiusca Zauca, , Lucian Vasile Pavel ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26064
STUDY ON GLOBAL DIMMING GENERATED BY ATMOSPHERIC AEROSOLS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 4 AbstractThe global diming means a gradual reduction on the earth's surface of global direct irradiance. The global dimming blocks thesunlight that would otherwise cause evaporation, thereby interacting with the global warming. In order to determine somecharacteristics confirming the global dimming were conducted a series of measurements of temperature and luminosity in Iasi.The purpose of the study was to link the urban pollution to the decrease in the solar luminosity during the time of a month... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26065
SOME EFFECTS OF ECO-CEMENT STABILIZATION OF EXPANSIVE SOILS ON CRITICAL STATE PARAMETERS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 4 AbstractThe objective of this paper is to investigate the effect of expansive soil treatment with Eco-Cement (EC) stabilizer, as beingcomposed of an alternative binder that partly substitutes the Ordinary Portland Cement (OPC). The extended use of EC in soilstabilization will carry several significant environmental benefits. Firstly the by-product resulted from the production of iron in ablast furnace will be reused, that otherwise will be stored on the ground in deposits representing an importa... Autori: Anghel Stanciu, Irina Lungu, Mircea Aniculăesi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26069
MAPPING NITRATE LEVELS IN GROUNDWATER USING GIS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 4 AbstractThis paper is an analysis of a case study which entails the assessment of pollution degree with nitrate in the Prut river basin, byanalysing 23 wells. The novelty of this work is the use of modeling done by GIS techniques, namely the Digital Terrain Model(DTM) interpolation technique, to obtain further information starting from discrete information.In the present paper, we emphasized the increasing tendency of nitrates and nitrites content in the underground waters, in directcorrelation ... Autori: Florian Statescu, Gabriela Biali, Lucian Vasile Pavel ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26073
PRELIMINARY TRIAL APPLICATION OF BIOLOGICAL DESULFONATION IN ANAEROBIC DIGESTORS FROM PIG FARMS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 4 AbstractThis paper describes preliminary tests carried out in treatment plants serving two different pig farms in Northern Italy, in order toassess the feasibility of implementing biological sulphur removal from biogas produced by anaerobic digestion processes. Thisnormally consists of mixture of CH4, CO2, and other gases; in the presence of sulphur, H2S is also formed, which must beremoved prior to the gas use in thermal engines, to avoid corrosion phenomena. Sulphur removal in the plants consi... Autori: Andrea G. Capodaglio, Arianna Callegari, Vincenzo Torretta ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26074
WATER MANAGEMENT AT THE FORMER COPPER MINING SITE MEDET (BULGARIA)
Environmental Engineering and Management Journal › Vol. 12 › Nr. 4 AbstractThe scope of the present paper is water management dimensioning closed to the copper mining area in the Medet region(Bulgaria). The mining works left an open pit and several waste rock dumps within the catchment area of Medetska River. Atpresent although the flooding of open pit is going on, it will be finished approximately in 2018. Water treatment is necessary dueto the high concentrations of pollutants (sulphate and copper) in the waters influenced by mining. The objective of the stud... Autori: Gabriela Biali, Petra Schneider, Ralf Löser ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26077
ISOTHERM AND KINETIC STUDIES OF RESIDUAL OIL ADSORPTION FROM PALM OIL MILL EFFLUENT (POME) USING BOILER FLY ASH
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 AbstractThe removal of residual oil from palm oil mill effluent (POME) using boiler fly ash was studied in this paper, with focus on theadsorption isotherms and kinetic studies by measuring the residual oil concentration using UV-spectrophotometer. The percentresidual oil adsorbed decreased from 80% to 5% as contact time was increased from 10 mins to 120 mins but increased from2.74% to 72.98% as initial concentration of residual oil increased from 0.04812 mg/L to 0.2406 mg/L. Pseudo-second order... Autori: Jude C. Igwe, Stella N. Anioke, Uche Arukwe ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26078
DEVELOPMENT OF A TOOL FOR INDUSTRIAL ATMOSPHERIC EMISSION MANAGEMENT IN THE APULIA REGION
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 AbstractAtmospheric emission inventories are useful tools to support informed decision making in air quality management. In theframework of Apulia Region emission inventory, a tool for the industrial atmospheric emission management called TerritorialEmissions Cadastre (CET) was developed. CET is a Web-based system able to store all data related to the industrial plants and toperform spatial queries; its components are used for synchronizing, exporting and querying the underlined database. CET al... Autori: Eleonora Andriani ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26079
STATISTICAL SPATIAL MODELS OF SOIL PARAMETERS. AN APPROACH USING DIFFERENT METHODS AT DIFFERENT SCALES
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 AbstractThe Romanian Soil Survey System does not imply, up to the present date, the use of digital methods in representing fieldcampaign results or for mapping soil parameters. The presented study tests several geostatistical methods to model some soilparameters (soil pH and topsoil humus content), mainly in order to observe the differences induced by the scale of the approachand to test existing data. In this respect, three differently dimensioned analysis scales were chosen, all parts of the s... Autori: Ionuţ Vasiliniuc ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26083
STATISTICAL DESIGN OF EXPERIMENTS FOR THE Cr(VI) ADSORPTION ON WEED Salvinia cucullata
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 AbstractExperiments were designed to optimize the Cr(VI) adsorption on Salvinia cucullata. The significance of different adsorptionparameters along with their combined effect on the adsorption process has been established. A regression equation wasformulated by representing percentage of Cr(VI) adsorption as a function of different independent variables such as contact time,pH, adsorbate concentration and adsorbent dose. The insignificant terms were assessed through student ‘t’ test and are remo... Autori: Saroj Sundar Baral ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26084
CHEMOMETRIC CLASSIFICATION OF ADVANCED OXIDATION PROCESSES FOR THE DEGRADATION OF PHARMACEUTICALS AND PERSONAL CARE PRODUCTS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 AbstractThe present study was focused to classify various advanced oxidation processes (AOPs) to degrade sixteen commonpharmaceuticals and personal care products (PPCPs). The classification was based on the degradation rate constant (h-1).Chemometric techniques like principal component analysis (PCA) and cluster analysis (CA) were used to classify AOPs whichcan efficiently degrade a certain class of PPCPs. The bipolt based on first two principal components (PCs) of PCA modelidentified two distin... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26085
KINETICS AND EQUILIBRIUM ADSORPTION STUDY OF LEAD (II) ONTO LOW COST CLAYS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 AbstractThe performance of four low cost Iraqi clays, bentonite (BT), kaolinite (KT), attapalgite (AT) and flint (FT) to remove lead ionsfrom aqueous solutions by adsorption was investigated. Batch experiments were carried out at pre determined equilibration time,adsorbent dosage, solution pH, particle sizes, ionic strength, initial lead ions concentration and temperature. Adsorption of Pb2+ions was strongly affected by pH and best adsorption is achieved at pH 4.5. The systems were investigated ... Autori: Najwa I. Abdulla ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26086
SPEED DISTRIBUTION INFLUENCE IN ROAD TRAFFIC NOISE PREDICTION
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 AbstractIn road traffic noise issues, experimental measurements are a relevant element in order to understand the problem and to adjustmodels. Sometimes, when measurements are not possible or in the designing phase, prediction models are used to perform anestimation of the equivalent level produced by a road infrastructure. Usually models parameters are obtained by a statistical datafit and thus they are related to the area where measurements have been performed. These models are suitable for st... Autori: Gerardo Iannone ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26087
EXPERIMENTAL STUDY AND NUMERICAL MODELLING OF THE WATER/OZONE CONTACT SYSTEM IN BUBBLE COLUMNS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 AbstractThe ozone oxidation and disinfection stages constitute important technological phases in the modern systems of water treatment,both as unitary stages as integrated ones into systems that use advanced oxidation processes (AOP). More than half of thewater/ozone contact systems used nowadays in the water treatment plants are based on systems of contact in the bubble column.This work here aims at experimentally analysing, in terms of scale, a water-ozone contact system in the bubble column a... Autori: Sorin Claudiu Ulinici ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26088
ELECTROCHEMICAL MINERALIZATION OF REACTIVE RED 147 DYE ON BORON-DOPED DIAMOND ELECTRODES
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 AbstractA study on the electrochemical decolourisation, aromatic ring degradation and mineralization of Reactive Red 147 (RR) syntheticsolutions using boron-doped diamond (BDD) electrodes is presented. Electrolyses were carried out under galvanostaticconditions in 0.1 M Na2SO4 supporting electrolyte using undivided electrolytic cell. Prior to electrolysis application, theelectrochemical behaviour of BDD electrode was characterized in the presence of RR dye by cyclic voltammetry in order toestabl... Autori: Sorina Moţoc ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26089
ELECTROCOAGULATION-TiO2 PHOTO-ASSISTED COMBINED SYSTEM APPLIED TO METHYL ORANGE WASTEWATER REMOVAL
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 AbstractCombined electrocoagulation (EC) and homogeneous phase TiO2 photo-assisted system were applied to methyl orange (MO)wastewater treatment. Optimum including current density, initial concentration of MO, TiO2 concentration, pH, solutionconductivity and electrode distance were investigated. 98% decolorization (initial concentration = 500 mg/L) was achieved in 30min with a current density of 125 A/m2, electrode distance of 2.5 cm, electrolyte KCl concentration of 0.5 g/L, initial pH of 6.86,... Autori: Yi Zhang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26090
ASSESSMENT OF MACROMYCETES USING FOURIER TRANSFORM INFRARED SPECTROSCOPY AND CHEMOMETRICS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 AbstractEight species of macromycetes which grow in phytocoenosis from “Călimani National Park” (Eastern Carpathians, Romania)have been analysed using Fourier Transform Infrared spectroscopy (FTIR). Among the analysed species, five species are beingconsidered edible (Clitopilus prunulus, Pleurotus eryngii, Macrolepiota rhacodes, Lacaria laccata and Suillus luteus) and threespecies are being considered toxic (Lyophyllum connatum, Paxillus involutus şi Gyromitra infula). The results of f... Autori: Aurel Pui ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26091
STUDIES ON THE TOXICITY OF COMPOSITE TANNERY EFFLUENT USING GUPPY (Poecilia reticulata) AS A FISH MODEL
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 AbstractEast Calcutta Wetland ecosystem is a Ramsar Site in India covering almost 51 km2 and is one of the largest of its type. Thiswetland receives a massive load of almost untreated industrial and domestic effluents every day, throughout the year, that hasbeen effectively utilized in pisciculture for having a better yield (2.85 metric tons of fish per 0.01 km2 of water body per annum).The present investigation was carried out to study the toxicity of the untreated effluents discharged from tan... Autori: Utpal Singha Roy ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26094
INFLUENCE OF NITRATE LOAD ON SULFUR TRANSFORMATIONS IN THE RHIZOSPHERE OF Juncus effusus IN LABORATORY-SCALE CONSTRUCTED WETLANDS TREATING ARTIFICIAL DOMESTIC WASEWATER
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 AbstractTwo laboratory-scale constructed wetlands planted with Juncus effusus were used to investigate the effect of nitrate load on thesulfur transformation dynamics related to the removal of organic carbon and ammonium. Organic carbon was removed at aconstant high mean level of 80% (inflow of 25 mg/L total organic carbon), irrespective of the nitrate load. In contrast, sulfatereduction responded immediately to the presence or absence of nitrate in an opposing manner, indicating a high abundanc... Autori: Shubiao Wu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26095
ENVIRONMENTAL IMPACT ASSESSMENT FOR TRADITIONAL VERSUS RECYCLED ROAD ASPHALT MIXTURES
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 AbstractThe evaluation of the environmental impact of transport infrastructure entails a complex characterization of factors, attitudes andconsequences. In the frame of an ecologically friendly approach, sustainable alternatives and solutions for road asphaltpavements production and exploitation must be identified. A comparative evaluation of the environmental impact for recycledand traditional road pavements asphalt mixtures, expressed as the amount of equivalent carbon dioxide, per ton of mixt... Autori: Alina Mihaela Nicuţă ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26096
UTILIZATION OF OLIVE OIL AS A POTENTIAL OXYGEN-VECTOR IN STIRRED BIOREACTORS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 AbstractA new approach to environmental protection management is the aerobic microbial digestion of food industry wastewaters byusing those waters as substrate, while the pollutants contained work also as oxygen-vectors. In biotechnology, oxygen masstransfer is a key parameter involved in the design and operation of mixing–sparging bioreactors and it can be analyzed by meansof the oxygen mass transfer coefficient (kLa). The influence of a second liquid phase with higher oxygen affinity (in this ... Autori: Elena Folescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26097
TOWARD A BLACK SEA COMMUNITY TAKING THE ADVANTAGES OF HYDROGEN ECONOMY-ENERGY
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 AbstractThere are a quite large number of studies published in the last decade, dealing with the possible pass of the human society to thehydrogen-based energy. The efforts made by researchers all around the world, in order to bring technical solutions, seemremarkable, but at global level only minor progresses were made toward this major change. Furthermore, most of studiespredicted a fuel crisis, but not a possible economical crisis with significant effects on the developing renewable energytec... Autori: Ştefan Stanciugelu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26099
SECOND GENERATION BIOFUELS AND BIOMASS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 Mother Earth Investments AG, is actively working onthe development 2nd generation bioenergy feedstocks.In this book, Mr. Jansen generously shares hisknowledge in the field, in particular, regarding thechallenges and opportunities in development ofbiomass-derived fuels. This essential guide toinvesting in bioenergy commodities details secondgeneration biofuels from a scientific, technical andeconomic perspective, and discusses their globalenvironmental, political and financial impact.The book is ... Autori: Roland A. Jansen ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26100
THE ROLE OF GREEN CHEMISTRY IN BIOMASS PROCESSING
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 The book edited by Haibo Xie and NicholasGathergood focuses on one of the most importantscientific issues of the 21 century which is thereplacing fossil fuel with sustainable alternatives suchas biomass. Fossil fuels are conventional rawmaterials for many industrial sectors includingchemical and energy production. Usage of fossil fuelis limited by their availability, price and carbonfootprint. Biomass is a renewable resource globallyavailable, cheaper and carbon sequestering. Step bystep shiftin... Autori: Adrian Catalin Puitel ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26101
EDITORIAL - A SPECIAL ISSUE DEDICATED TO ENVIRONMENTAL LEGISLATION, SAFETY ENGINEERING AND DISASTER MANAGEMENT
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
The ELSEDIMA International Conference on
“Environmental Legislation, Safety Engineering and
Disaster Management” held its 9th edition in 2012. This
edition was organized by the “Babeş-Bolyai” University
of Cluj-Napoca - Faculty of Environmental Science and
Engineering, together with the Ministry of
Administration and Interior - General Inspectorate for
Emergency Situations, the Disaster Preparedness and
Prevention Initiative for South – Eastern Europe and
S.C. I... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26102
ASSESSING THE ENVIRONMENTAL QUALITY OF THE VENICE LAGOON WATERS USING THE E-QUALITY SOFTWARE TOOL
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
According to the Water Frameword Directive the classification of water bodies environmental quality and the achievement of
“good status” by 2015 are requested for all the European aquatic environment, including transitional waters such as coastal
lagoons. Although progresses have been done and many results have been achieved, several aspects of the WFD implementation
can be further improved and current limitations are more evident for some categories of water bodies such a... Autori: Andrea Critto ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26103
RP-HPLC ANALYSIS OF CARBONYL COMPOUNDS IN SOME INDOOR AIR SAMPLES IN A FACULTY FROM CLUJ-NAPOCA
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
This study describes a reversed-phase high-performance liquid chromatography (RP-HPLC) method for the analysis of several
carbonyl compounds in air samples. The air samples were collected using a passive sampling method and cartridges based on
florisil impregnated with 2,4-dinitrophenylhydrazine (2,4-DNPH). After derivatization the carbonyl compounds were analyzed
by liquid chromatography technique coupled with UV detection. The developed RP-HPLC method was used to analyze... Autori: Carmen Roba ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26104
DESCRIPTION OF AEROSOL PROPERTIES OVER CLUJ-NAPOCA DERIVED FROM AERONET SUN-PHOTOMETRIC DATA
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
This paper presents some optical and microphysical properties of aerosols measured over the Cluj-Napoca city, at the Faculty of
Environmental Science and Engineering, Babeş-Bolyai University. This site is part of the Romanian Atmospheric 3D Research
Observatory (RADO) and the Aerosol Robotic Network (NASA-AERONET) and is equipped with the only sun and sky tracking
radiometer (Cimel CE 318A sun-photometer) in Transylvania. By analyzing Direct Sun measurements like Aero... Autori: Nicolae Ajtai ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26105
REDUCED UPTAKE OF Cd AND Pb BY Miscanthus sinensis x giganteus CULTIVATED ON POLLUTED SOIL AND ITS USE AS BIOFUEL
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
The cultivation of Miscanthus sinensis x giganteus on a polluted soil near Copsa Mica – Romania has started in 2008. Since then
every March and August the roots and stems have been analyzed, showing a very low amount of heavy metals in the aerial parts
in February, when the harvesting takes place. The combustion properties of the material are similar to those of lignite, but
without sulphur and with low ash amount. Because cultivation of edible plants poses the risk of hea... Autori: Constantin Horia Barbu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26106
REGIONAL DEVELOPMENT AND ESTABLISHMENT OF RENEWABLE ENERGY CLUSTERS IN NORTH-WEST REGION OF ROMANIA
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
In order to link the question of renewable energy to regional development and territorial cohesion, the article aims to present and
evaluate recent initiatives taking place in the North-West Development Region of Romania, with emphasis on emerging
renewable energy clusters. Moreover, we will present a case-study on geothermal energy cluster in Northern Transylvania. The
state-of-art analysis is a result of a previous FP7 project, while the action plan has been derived from... Autori: József Benedek ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26107
EFFECT OF BATCH TIME ON THE PARETO OPTIMAL OPERATING SOLUTIONS FOR A CHEMICAL REACTOR BASED ON FAILURE PROBABILITY INDICES
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
Recently, a new failure probability index was introduced that characterizes the operation of highly sensitive chemical reactors
(i.e. when highly exothermic / hazardous reactions are conducted). Based on this, the current paper exemplifies the application of
the risk analysis methodology proposed to generate the Pareto optimal operating solutions accounting for reactor productivity
maximization (product yield) and probabilistic risk minimization. The multi-objective optimi... Autori: Anca Dan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26108
FAST CHARACTERIZATION OF PYRIDINE USING ION MOBILITY SPECTROMETRY AND PHOTOIONIZATION DETECTION
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
Being involved in the synthesis of precursors for amphetamine and amphetamine-like drugs, pyridine (Py) may be also regarded
as a by-product found when these drugs are obtained via the Leuckart method. Also, pyridine is well known as a biomarker of
microorganisms, when those are subjected to pyrolysis before analysis by various instrumental techniques. Consequently, since
Py is not commonly found in the air, its presence as a contaminant at trace levels in a room could ind... Autori: George-Bogdan Ghira ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26109
TRIHALOMETHANES VARIATION IN URINE UNDER DIFFERENT CONDITIONS OF HUMAN EXPOSURE
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
Known as the most important byproducts of water disinfection with chlorigen chemicals, trihalomethanes (THMs) are
incriminated in causing severe effects upon human health. The exposure pathways that can lead to potentially significant uptake
of THMs include for adults ingestion of tap water and inhalation of THMs in vapor phase resulting from bathing, showering and
washing. The purpose of this paper is the exposure assessment to THMs through ingestion, inhalation and derma... Autori: Anca Elena Gurzău ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26110
BIODEGRADATION OF POLY(HYDROXYBUTYRATE)/POLY(VINYL ALCOHOL) BLENDS BY FILAMENTOUS FUNGI
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
Poly(hydroxybutyrate) (PHB) is a biodegradable thermoplastic polyester with very high potential for industrial applications. The
properties could be improved by mixing with another polymer, natural or synthetic, such as poly(vinyl alcohol) (PVA). The
resulting polymer blends are potentially able to achieve the desired performance for different applications. Biodegradation
modifies mechanical, physical and chemical properties of a given material. PHB are degraded by diverse... Autori: Luiza Jecu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26111
COMBINED OPTOELECTRONIC METHODS USED IN THE MONITORING OF SO2 EMISSIONS AND IMISSIONS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
This study focuses on the local scale behavior of SO2 emissions resulting from lignite-combustion thermal power plants. The
investigations aimed at monitoring the SO2 emissions and imissions over a two week period in September 2010. One of the
largest power plants from Eastern Europe was chosen for monitoring using different optoelectronic techniques. Rovinari power
plant (44o54’45”N – 23o09’44”E) is one of the largest electricity suppliers of Romania, having 4 groups of 3... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26113
ROMANIAN SURFACE WATER QUALITY: TARNAVA MARE RIVER BETWEEN MEDIAS AND COPSA MICA CASE STUDY
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
A set of 500 water samples collected from various sites of Tarnava Mare River, between Medias and Copsa Mica were analyzed,
during three years (2010-2012). The physicochemical parameters like: temperature, pH, electrical conductivity (EC), total
dissolved solids (TDS), salinity, calcium (Ca2+), magnesium (Mg2+), sodium (Na+), lead (Pb2+), chloride (Cl-), sulfate (SO4
2-),
ammonium (NH4
+), nitrite (NO2
-) and nitrate (NO3
-) were determined. The results were co... Autori: Ioana Piştea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26114
STUDY OF TROPOSPHERIC AEROSOL TYPES OVER IASI, ROMANIA, DURING SUMMER OF 2012
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
This research has been performed during summer time at Iasi Atmosphere Optics, Spectroscopy and Lasers Laboratory site
(LOA-SL), aerosol monitoring station (47.19N, 27.55E). In order to properly identify and characterize the aerosol types, Aerosol
Robotic Network (AERONET) data and sun-photometer measurements were analysed using parameters such as: optical
thickness, spectral dependence of Ångström exponent (α), spectral dependence of Single Scattering Albedo and the ... Autori: Florin Unga ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26116
SAFETY LEVELS REACHED BY REINFORCED SOIL STRUCTURES
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
The paper deals with reinforced soil structures used in critical infrastructures for ecological landfills. During the last 17 years in
Romania 28 such landfills were completed. Romania is however a country where strong earthquakes often occur. About 60% of
its territory feels the seismic actions which combine with the existing ones. During earthquakes in the massive structures of
landfills, huge inertial forces are developing. Due to uncontrolled movements and deformations... Autori: Cristina Feodorov ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26118
FLY ASH FROM THERMAL POWER PLANT, RAW MATERIAL FOR GLASS-CERAMIC
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
Waste recycling represents a very significant issue for the protection of our environment. Large waste quantities (slag and ashes)
are products of the coal extraction industry and its subsequent combustion in thermal power stations. The possibilities of
obtaining crystallized glasses in the CaO-Al2O3-Fe2O3-SiO2 system by introducing in the raw materials mixture ashes from
Mintia Deva thermal power station have been studied. The physical and chemical characterization of the... Autori: Firuţa Goga ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26121
AQUATIC PHYTOTOXICITY OF HEAVY METALS: Cu, Cd AND Zn ECOTOXICOLOGICAL TESTS WITH DUCKWEED PLANTS (Lemna minor)
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
Heavy metals are common contaminants of freshwaters and they can produce toxic effects on aquatic fauna and flora. The ions of
heavy metals existing in freshwaters are well known as toxicants for the aquatic organisms. Duckweed is an aquatic plant of
small size that floats on fresh water surface of lakes and marshes. The small plants are highly exposed to aquatic pollutants and as
a result they are very sensitive to the toxic effects. As consequence the duckweed plants are... Autori: Vasile Oros ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26122
MONITORING THE QUALITY OF THE SLUDGE RESULTED FROM DOMESTIC WASTEWATER TREATMENT PLANTS AND THE IDENTIFICATION OF RISK FACTORS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
Monitoring the quantity of the sludge resulted from domestic wastewater treatment is a current concern in Romania due to the
necessity to reduce any risk. This paper discusses the results of monitoring and examination of sludge deposited temporarily in a
domestic wastewater treatment plant (5000 people equivalent) from qualitative point of view, following the analysis of the
physical-chemical parameters: pH, total solids, specific resistance to filtration, humidity and den... Autori: Casen Panaitescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26123
ANALYSIS OF AIR QUALITY IN TWO SITES WITH DIFFERENT LOCAL CONDITIONS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
The aim of this paper is to analyze how local and atmospheric conditions influence pollutants’ distribution. Two different sites in
Romania were chosen for measurement campaigns: Surlari (44° 34', 26° 19') located into a forest and near a lake, and a suburban
area, Magurele (44° 21', 26° 2'), where the anthropogenic activities dominate. The same equipments for measurements of surface
ozone, CO, NO2, NO and PM10 were used at the two sites. The measurements were performed in... Autori: Sabina Ştefan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26126
EXPLORATORY ANALYSIS OF GAS EMISSIONS FROM NON-COMPLIANT MUNICIPAL LANDFILL USED FOR ENERGETIC EVALUATION
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
This paper presents a research method for the exploratory analysis of non-compliant municipal waste landfills by determining the
gas composition of emissions. The proposed method has the following stages: establishing municipal landfill surface contour by
topographic measurements; setting measuring points on the deposit surface; setting the number of points needed and their spatial
coordinate; field location of points for making exploratory measurements; making and recordi... Autori: Michaela Bianca Vac Soporan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26127
RESEARCH ON NOISE POLLUTION IN DENSELY POPULATED URBAN AREAS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
Being constantly surrounded by sound, in most cases we operate ignoring this “environmental noise”, but when the noise
intensity increases, it becomes a pollutant, adversely affecting the level of professional performance, leading to fatigue, causing
nervousness or decreasing the quantitative and/or qualitative level of performance. The main objective of this paper is to evaluate
the noise problem in the Strand district of Sibiu and to highlight the negative effects affect... Autori: Valentin Petrescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26131
FUZZY-BASED CLUSTERING OF EPICENTERS AND STRONG EARTHQUAKE-PRONE AREAS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 1
Abstract
An original Discrete Perfect Sets (DPS) algorithm was developed and applied to clustering of earthquake epicenters with M≥3.0
in California. The obtained clusters correspond well with the locations of the epicenters of strong earthquakes with M≥6.5.
This fact allows considering them as earthquake-prone areas for the magnitude M≥6.5. We compared the obtained clusters
with the areas recognized in 1976 using Earthquake-Prone Areas (EPA) method. The compariso... Autori: Alexei Gvishiani ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26132
IMPROVING MANAGEMENT OF RISKS AND NATURAL DISASTERS BY REGIONAL GIS DISTRIBUTED APPLICATION
Environmental Engineering and Management Journal › Vol. 12 › Nr. 1
Abstract
The aim of this paper is to provide a framework for the improvement of the processes involving risks evaluation and management
evaluation in Central East Moldavian Region, considering the occurrence of natural disasters, such as floods, earthquakes, forest
fires and landslides. Consequently, a GIS application has been developed in order to graphically reflect and analyze these risks.
The studies on the targeted region would be a starting point to further extensions to othe... Autori: Iulian Furdu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26133
BEHAVIOUR OF SOLID PARTICLES ON A FLAT OSCILLATING SURFACE
Environmental Engineering and Management Journal › Vol. 12 › Nr. 1
Abstract
In many industrial applications most of the solid particles are separated by size and for this purpose there are used the oscillating
sieves. The separation process based on sieves is a complex one and it depends on several factors, such as the properties of solid
particles submitted to the separation process and on the operating regimes of the separating equipment. We have studied the
separation process of the behaviour of solid particles on a flat oscillating surface... Autori: Ovidiu Bontas ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26134
TIME SERIES ANALYSIS OF WIND SPEED AND TEMPERATURE IN TIRASPOL, MOLDOVA
Environmental Engineering and Management Journal › Vol. 12 › Nr. 1
Abstract
This research analyses time series of air temperature and wind speed. Trends and periodical components are defined for both time
series with no significant statistical relationship between them. The spectral analysis of temperature series with no trends shows
the peak frequency fc = 1/12, corresponding to a seasonal periodical component. The graph of the spectral density function of the
wind speed time series does not manifest a seasonal periodic component. Forecasting of ... Autori: Rasid Burtiev ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26135
MACRO AND ULTRA-MICRO SCALE CHANGES OF RAPESEED SEEDLINGS GERMINATED FROM SEEDS EXPOSED TO UVA-VIS RADIATIONS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 1
Abstract
Our researches have focused primarily on variations of different biophysical and biochemical effects on vegetal and animal
material at macro, micro, and ultra-micro scale resulted from changes in environmental condition. Growth and spectral parameters
of rapeseed seedlings from seeds exposed to UVA-VIS radiation with a high pressure lamp which emits incoherent continuously
radiation for different time periods were examined 14 days after germination. These studied parameter... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26138
STUDY ON GREENHOUSE GAS EMISSIONS FROM WASTEWATER TREATMENT PLANTS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 1
Abstract
One of the causes of climate change is the accumulation of greenhouse gases (GHGs). Methane (CH4) is one of the greenhouse
gases, with an ability to trap heat in Earth's atmosphere 21 times greater than carbon dioxide (CO2) per unit mass and in the same
period of time. Because the lifetime of methane in the atmosphere is relatively short, it could be kept under control.
Wastewater treatment plants (WWTPs) are anthropogenic sources of CH4 emissions. Anaerobic digestion of t... Autori: Doru Lucian Manea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26139
ESSENTIAL TOOLS TO MITIGATE VRANCEA STRONG EARTHQUAKES EFFECTS ON MOLDAVIAN URBAN ENVIRONMENT
Environmental Engineering and Management Journal › Vol. 12 › Nr. 1
Abstract
In a world of uncertainty, the only constant is change and rapid change produces a multitude of diverse facts. Risk is an integral
part of life. While no country in the world is entirely safe, the lack of capacity to limit the impact of hazards remains a major
burden for all countries and while the world has witnessed an exponential increase in human and material losses due to natural
disasters, there is a need to reverse trends in vulnerability to earthquakes. Available d... Autori: Gheorghe Mărmureanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26140
ENVIRONMENTAL RISKS OF WASTEWATER SLUDGE DISPOSAL
Environmental Engineering and Management Journal › Vol. 12 › Nr. 1
Abstract
Using sludge with dangerous substances content as an agricultural fertilizer can provide risks for humans and all environmental
components. An important risk factor that had to be taken into account is the combination of sludge used as a fertilizer and
agriculture activities that has its own consequences.
In this paper, a risk evaluation for sludge disposal was elaborated. The most important risk factors in the studied case, wastewater
sludge used as an agricultural fer... Autori: Elena Manea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26141
CHANGES IN GROWTH OF WHEAT PLANTLETS INDUCED BY THE ACTION OF THIAMETHOXAM AND THIOPHANATE-METHYL ON SEEDS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 1
Abstract
Pesticides can be considered useful to eliminate pests, but can also induce negative effects to the processes of germination, growth
and development of plants or disrupt some physiological and metabolic processes. By studying the effect of pesticides on treated
seeds germination, and determination of growth indices, it was possible to evaluate the positive or negative influence or toxicity
of the chemical compounds. The aim of this research is to highlight the effects of d... Autori: Daniela Nicuţă ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26142
THE RELEVANCE OF VOLCANIC HAZARD IN ROMANIA: IS THERE ANY?
Environmental Engineering and Management Journal › Vol. 12 › Nr. 1
Abstract
Volcanic hazard is ignored in natural hazard studies in Romania because no active volcano is known on its territory. However, the
2010 eruption of Eyjafjallajökull volcano in Iceland and its consequences on air traffic safety across Europe and the whole
northern hemisphere dramatically demonstrated that volcanic hazard in a certain area, such as a country, is not necessarily related
to the presence of active volcanoes in the same territory. Therefore, target-focused approa... Autori: Alexandru Szakács ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26146
DEMINERALIZATION OF WATER WITH MIXED-LAYER ION-EXCHANGERS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 1
Abstract
This paper develops a procedure whereby breakthrough curves obtained experimentally for ion exchange process in fixed bed ion
mixed exchangers during water demineralization, can be used to characterize quantitatively and optimize the ion exchange
process. In this regard, based on breakthrough curves there were developed statistical models that correlate three important factors
which influence the process (superficial fluid velocity through the layer, changing layer height,... Autori: Iuliana Rogoveanu Radosavlevici ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26147
ANALYSIS AND MODELLING OF THE SOLUBILITY OF BIOGAS COMPONENTS IN WATER FOR PHYSICAL ABSORPTION PROCESSES
Environmental Engineering and Management Journal › Vol. 12 › Nr. 1
Abstract
Biogas can be used as a renewable and green energy source by upgrading to natural gas. Water scrubbing, which is one of the
most widely-applied upgrading technologies, involves an accurate knowledge of the solubility of the main biogas components in
water, which is essential to the design and optimization of the biogas upgrading process.
In this work, we use several thermodynamic models available in the Aspen Plus software modeling environment to calculate the
solubilit... Autori: Petronela Cozma ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26148
APPLICATION OF A NEURO-GENETIC TECHNIQUE IN THE OPTIMIZATION OF HEAVY METALS REMOVAL FROM WASTEWATERS FOR ENVIRONMENTAL RISK REDUCTION
Environmental Engineering and Management Journal › Vol. 12 › Nr. 1
Abstract
The reason for carrying out this research is related to the significant risk of heavy metals present in wastewater on the
environment and human health. The removal of heavy metal ions from aqueous solutions was performed in a batch system, using
peat (from Poiana Stampei, Romania) as adsorbent. The efficiency of the process was predicted with high accuracy (correlation
with experimental data more than 0.99) based on a feed-forward neural network with two hidden layers. The... Autori: Gabriel Dan Suditu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26150
EQUILIBRIUM STUDY OF Pb(II) AND Cd(II) BIOSORPTION FROM AQUEOUS SOLUTION ON MARINE GREEN ALGAE BIOMASS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 1
Abstract
The biosorption of Pb(II) and Cd(II) ions from aqueous solution on marine green algae biomass (Ulva lactuca sp.) was studied in
batch systems, at initial solution pH of 5.0 and biomass dose of 8.0 g/L, considered as optimum experimental conditions. The
obtained results from experiments of a single-component biosorption were analyzed using Langmuir, Freundlich and Dubinin-
Radushkevich isotherm models. The Langmuir equation describe the biosorption isotherm of Pb(II) and Cd... Autori: Laura Bulgariu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26152
SURVEY ON TYPICAL ORGANIC POLLUTANTS AND HEALTH RISKS OF MAIN WATER SOURCES IN YELLOW RIVER BASIN
Environmental Engineering and Management Journal › Vol. 12 › Nr. 9 AbstractTo understand the typical organic pollutant contamination status of the main source water in Yellow River basin, samples werecollected from fifty source water points (including reservoir and river) in Yellow River basin. The samples were analyzed for therepresentative organic pollutants, including benzene homologous, chlorobenzene compounds, organophosphorous pesticides, and nitrobenzene compounds, total of 17 compounds. It was observed that all concentrations of the 17 compounds in the ... Autori: Jijun Gao ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26155
NAPHTHALENE DEGRADATION IN SOIL INOCULATED WITH MIXED DENITRIFYING BACTERIA
Environmental Engineering and Management Journal › Vol. 12 › Nr. 9 AbstractKnown concentrations of naphthalene were added to soil samples to investigate the anaerobic degradation potential by theinoculated naphthalene-adapted bacteria under nitrate reducing conditions. Naphthalene could be anaerobically biodegraded tonon-detectable levels within 35 days when the initial concentrations were 5.8 mg/kg, 34.7 mg/kg, 61.4 mg/kg, 93.7 mg/kg and146.6 mg/kg in soil, respectively. The degradation rates of naphthalene increased with increasing initial concentrations. The... Autori: Junfeng Dou ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26157
STUDY ON WATER QUALITY AND BIODIVERSITY OF SURFACE MICROLAYER IN FRESH WATERS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 9 AbstractTo explore the water quality and biodiversity of surface microlayer (SML) in fresh waters, we investigated the water status ofSML and subsurface water (SSW) of three fresh waters in China during April to August of 2010, by chemical and biologicalmonitoring methods. The results showed that the indexes such as total nitrogen (TN), total phosphorus (TP), chemical oxygendemand (COD) exceeded the national III or IV level of surface water quality, and the contents of indexes of SML were muchhi... Autori: Jiang Yu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26158
EVALUATION OF URBANIZED ECOLOGICAL ENVIRONMENT QUALITY: A CASE STUDY ON BEIJING CHAOYANG DISTRICT
Environmental Engineering and Management Journal › Vol. 12 › Nr. 9 AbstractThe objective of this study is to evaluate the urbanized ecological environment quality with land use classification system(artificial ecological subsystem, water ecological subsystem and continental ecological subsystem). Three land use type ecosystem combined with characteristics of urban ecological environment conditions (space pattern, environment characteristics, biological characteristics, ecosystem service) established the urban ecological environment quality synthetic evaluation ... Autori: Zhang Chen ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26160
ADSORPTION OF DIBUTYL-PHTHALATE ON HUMIC ACID
Environmental Engineering and Management Journal › Vol. 12 › Nr. 9 AbstractBehaviors of adsorption of di-n-butyl phthalate (DBP) on humic acid and the effects of temperature on these processes are studied by solid phase extraction-HPLC method. The results show that the adsorption amounts of DBP increase with increasingequilibrium-concentrations of DBP. Such results could be well described by Langmuir equation. The maximum adsorptionamount (Qmax) and adsorption constant (k) at 35oC were both lower than those at 25oC. Thus, high temperature is unfavorable to the ... Autori: Zhi-dang Yang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26162
DYNAMIC MECHANICAL COMPRESSION OF ROCK MATERIAL WITH DIFFERENT WEATHERING DEGREES
Environmental Engineering and Management Journal › Vol. 12 › Nr. 9 AbstractRock dynamic mechanical characteristic is the basic information to study the damage of rock structures under dynamic loadsinduced from earthquake or blasting. A nuclear power plant site is a granite mountain of the same active tectonic period. Dynamic triaxial compression experiments need to be conducted on the drill cores of different project parts according to the design requirements. These drill cores were formed in the same active tectonic period, but as a result of the different bur... Autori: Liu Bo ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26163
STUDY OF ECOLOGICAL INHIBITION OF SULFATE-REDUCING BACTERIAL ACTIVITY AND ASSOCIATED POPULATION SUCCESSION IN OILFIELD FLOODING WATER
Environmental Engineering and Management Journal › Vol. 12 › Nr. 9 AbstractIn the conventional water flooding process of Daqing Oilfield in China, the occurrence of abundant sulfate-reducing bacterialpopulations has substantially affected the industrial production. This study was conducted from the perspective of ecologicalsuppression by operating anaerobic ABR reactors and dosing ecological inhibitors in a continuous-flow experiment. The practicaloperating efficacy was investigated and associated dynamic bacterial population succession was analyzed. Results sh... Autori: Bin-song Wang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26165
IMPACTS OF URBAN LANDSCAPE FUNCTIONAL TYPES ON URBAN GREENSPACE
Environmental Engineering and Management Journal › Vol. 12 › Nr. 9 AbstractStudying the relationship between urban typical landscape functional types and vegetation communities will conduct toinformation on management measures, people’s activities etc. Moreover, this could attain an important role for the research ofother ecological phenomena where human activities are involved. According to the data collected from the said plots, the impactof typical landscape functional types of urban core areas on the plant species was analysed. The results show that indigen... Autori: Yantun Song ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26169
EXPERIMENTAL STUDIES ON THE EFFECTS OF DIFFERENT CARBON SOURCES ON PHOSPHORUS REMOVAL DURING DENITRIFYING PROCESS IN THE PARALLEL A2O-MBR SYSTEM
Environmental Engineering and Management Journal › Vol. 12 › Nr. 9 AbstractA novel parallel A2O-MBR system was developed in this study based on the theory of denitrification with phosphorus removal.By utilizing the denitrifying phosphorus accumulating bacteria (DPB), the carbon source in the influent could meet the needs ofboth the denitrification and dephosphorization processes. Therefore, the carbon source restriction in conventional A2O processeswas resolved. The proposed system was inoculated with the sludge collected from the secondary settling tank in a m... Autori: Liang Wang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26170
SIMULATION STUDY ON WATER-PRESERVED MINING IN MULTIEXCAVATION DISTURBED ZONE IN CLOSE-DISTANCE SEAMS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 9 AbstractWith the adoption of lab physical simulation, this paper has studied the moving characteristics of overlying strata and thedevelopment rules of water-flowing fractured zone in multi-excavation disturbed zone in close-distance seams, and analyzed thefeasibility of water-preserved mining in multi-excavation disturbed zone. The experiment result has showed that under thegeological conditions of Suancigou Coal Mine, after the upper slicing mining of upper-6 coal seam, the development height ... Autori: Liqiang Ma ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26173
EXPERIMENTAL INVESTIGATION ON WET FLUE GAS DESULFURIZATION WITH ELECTROSTATICALLY-ASSISTED TWIN-FLUID ATOMIZATION
Environmental Engineering and Management Journal › Vol. 12 › Nr. 9 AbstractA wet flue gas desulfurization (WFGD) system adopting electrostatically-assited twin-fluid atomization injector was presented.Spatial distributions of the droplet sizes, velocity for different voltages were measured using limewater and SO2 removalefficiency for different voltages and Ca/S ratios were tested using limewater drops. The physical and chemical improvementmechanisms were analyzed using spray characteristics and double film theory. The analysis showed that electrostatically-ass... Autori: Zhentao Wang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26175
EFFECTS OF CHLORINE IONS ON THE PHOTOELECTROCATALYTIC DEGRADATION OF ORGANICS USING HIGHLY ORDERED TiO2 NANOTUBE ARRAYS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 9 AbstractAs a new type of photoelectrocatalytic materials, the TiO2 nanotube arrays have drawn a lot of attention for efficientlyphotoelectrocatalytic organic pollutants degradation due to their highly photoelectrocatalytic properties. Yet, the performance ofphotoelectrocatalytic organics degradation using TiO2 nanotube arrays electrode is influenced by Cl-, a kind of typical reducingmaterial. This paper focuses on the effect of Cl- on the different photoelectrocatalytic performance of TiO2 nanot... Autori: Jialing Zhang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26177
POLYCYCLIC AROMATIC HYDROCARBONS IN DIFFERENT SOILS AND VEGETABLES FROM THE PEARL RIVER DELTA, SOUTH CHINA
Environmental Engineering and Management Journal › Vol. 12 › Nr.10 AbstractSurface soil samples and vegetable samples from the Pearl River Delta, South China were collected and analyzed for 16 USEPApriority polycyclic aromatic hydrocarbons (PAHs). The total concentrations of 16 PAHs in soils ranged from 22.1 to 1256.9 ng/g.Naphthalene, phenanthrene, fluoranthene and benzo(b)fluoranthene were consistently the most prevalent individual PAHs. Theconcentrations of 16 PAHs in vegetables varied from 31.2 to 726.8ng/g. Naphthalene and phenanthrene were the predominant... Autori: Song Yantun ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26180
ENVIRONMENTAL HAZARDS OF COAL FIRE AND THEIR PREVENTION IN CHINA
Environmental Engineering and Management Journal › Vol. 12 › Nr.10 AbstractCoal fire is a serious hazard in China and also in other coal-producing countries. A lot of studies have been done by manyinvestigators. This paper analyzes the environmental hazards of coal fire and introduces the current prevention methods. Thestudy reveals that coal fires in Northwest China still induce severe hazards. They result in serious air pollution, water pollution,ecological disturbance and geological disasters, which are analyzed in detail. The current coal fire prevention me... Autori: Xuyao Qi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26184
STUDY ON ENVIRONMENTAL GEOLOGICAL PROBLEMS CAUSED BY SLOPE MANAGEMENT
Environmental Engineering and Management Journal › Vol. 12 › Nr.10 AbstractThe influence of slope management on the surrounding environment is an important environmental geological problem. How toevaluate the slope stability is the most important problem in slope management, and reasonable slope supporting measures can beselected based on the stability of slope and surrounding environment. This paper proposed a new method for evaluating the slopestability. This method is based on the current stress state and the preferred sliding direction. This method is simpl... Autori: Mingwei Guo ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26186
FORECASTING THE INFLUX OF VISITORS TO STATE PROTECTED WILDERNESS AREAS IN CHILE
Environmental Engineering and Management Journal › Vol. 12 › Nr.10 AbstractThis study estimates the number of visitors to State Protected Wilderness Areas (SPWAs) in Chile by origin (national andforeign), using annual data from 1986 to 2011. Two linear regression models were used: one to estimate the number of Chileanvisitors and the other for foreign visitors. The model to predict Chilean visitors in 2013-2014 incorporates the GDP per capita inChile, the annual trend in the conditions of international economic crises, while the model to predict the number of f... Autori: Jaime Pérez-Kallens ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26189
CORPORATE RESPONSIBILITY IN THE TOURISTIC AREA AND ITS INFLUENCE ON CUSTOMER TRUST
Environmental Engineering and Management Journal › Vol. 12 › Nr.10 AbstractToday's society experiences a growing interest in social problems. This leads to the need for companies to assess their impact onthe environment, in its social, environmental and economic dimensions. As a result, organizations are incorporating socialpractices that are used as variables of marketing to attract and retain customers. In this context, the purpose of the present study is twofold; namely to analyze the organizational culture change of the hotels directors because of the requi... Autori: Isabel María Rosa Díaz ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26190
IMPROVING THE ENVIRONMENTAL PERFORMANCES OF IRON POWDERS CARBURIZING PROCESS IN A METHANE-BEARING ATMOSPHERE
Environmental Engineering and Management Journal › Vol. 12 › Nr.10 AbstractConsidering the advantages of steel surface hardening, when less expensive low- and medium- carbon steels can be surfacehardened without the problems of distortion and cracking associated with the through hardening of thick sections, we developedsome research entailing the increase in environmental performance of iron powders carburizing process using methane as carrier.Apart of studies on optimal working parameters and methods, our research addresses improvements in environmentalperform... Autori: Olimpia Ghermec ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26198
ANALYSIS OF INTEGRATION OF SOLAR COLLECTOR SYSTEMS INTO DISTRICT HEAT SUPPLY NETWORKS
Environmental Engineering and Management Journal › Vol. 12 › Nr.10 AbstractSupply of heat energy is of the high importance in the northern countries of the Europe. EU energy policy and high prices of theheat energy resources takes a challenge to find any alternative resources for generation of heat energy. Therefore in this paper the integration of renewable energy source - solar energy into the existent heat energy supply system is analyzed as the alternative or additional source of heat energy. The case study of the Girionys boiler-house (at Kaunas district, ... Autori: Jolanta Dvarionienė ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26201
LOW-COST TECHNOLOGIES FOR SAFE DRINKING WATER IN SOUTH-EAST ASIA: OVERVIEW AND APPLICATION TO THE NORTH OF VIETNAM
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractIn spite of the ambition of the Millennium Development Goals (MDGs), water supply and sanitation are still worryingly deficientin South-East Asia (SEA). Due to the rapid increase in population, increased urbanization and industrial activities, and absence ofa strong regulatory framework, water quality in this region is impaired due to the high levels of contamination. Because of thechallenge of providing safe drinking water from poor quality water sources, development of low-cost drinkin... Autori: Pham Thi Thuy ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26202
STUDENTS’ ENTREPRENEURIAL COMPETENCIES AND ORIENTATION: CURRENT STATUS AND PERSPECTIVES
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractCurrently one can witness a revolutionary change in teaching/learning strategies and an evolution which should reconsider therelation between educational institutions, teaching staff, and students, on the one hand, and economic agents, public or privatecompanies, firms, and NGOs, on the other. Despite the large amount of research focusing on the entrepreneurial phenomenon,there has been limited focus on the effect of education upon enterprise performance in terms of venture creation and ... Autori: Gabriela Boldureanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26204
EVALUATION OF LAND DEGRADATION AFTER FOREST FIRE USING A FUZZY LOGIC MODEL
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractThis study presents a simple, synoptic and suitable for continuous monitoring model based on the fuzzy logic to monitor landdegradation after a forest fire in a Spanish Mediterranean coastal area. The model combined topography and vegetationinformation to assess land degradation status. Topography parameters, slope and aspect were derived from a digital elevationmodel (DEM). Evidences about the soil status were obtained by analyzing the vegetation cover with remote sensing images. TheNor... Autori: Ignacio Melendez-Pastor ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26206
STUDIES ON EXCESS SLUDGE REDUCTION AND MICROBIAL COMMUNITY GROWING IN A NOVEL A+OSA REACTOR
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractExcess biomass produced in the degradation processes of organic pollutants is creating environmental challenges for wastewatertreatment plants. The A+OSA system, a modification of the anoxic / oxic (A/O) process via insertion of a sludge holding tankinto a sludge return line, has been demonstrated to be capable of achieving simultaneous nutrient removal and sludge reduction.Here we report the results of an investigation aimed at evaluating the impact of the sludge holding tank on the bio... Autori: Li Jia ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26207
EFFECTS OF TEMPERATURE ON THE PROPERTIES OF PINE AND MAPLE LEAF LITTER ASH. A LABORATORY STUDY
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractThe dominant litter samples Pinus sylvestris L. needle litter and Acer platanoides L. leaf litter were collected in the coniferousmixed forest located at 54º43‘ N 25º19‘ E (Vilnius, Lithuania) in April 2010. Different heating temperatures (150, 250, 350, 450and 550ºC) and 2 hour heating duration were used to produce ashes. The selected heating temperatures affected mass loss, colour, pH, electrical conductivity (EC), C/N ratio, nutrient concentrations of the ash. The darkness of Munsell ... Autori: Jolita Dūdaitė ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26208
ADSORPTION OF LEAD AND COPPER FROM AQUEOUS SOLUTION USING UNMODIFIED WHEAT STRAW
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractPotential of unmodified Wheat Straw as an adsorbent for the removal of lead and copper was studied. Effect of pH, adsorbentdose, contact time and initial metal concentration on the removal of the metal ions were also investigated. Maximum removal oflead was found to be 43.55% by wheat straw under optimum conditions (pH=5, adsorbent dose=16g/L, contact time= 240minutes, metal concentration=100 mg/L). Unmodified Wheat straw removed 0.381 mg/g of lead. While 56.36% copper removalwas achieve... Autori: Mehwish Anis ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26209
KINETICS AND EQUILIBRIUM OF COPPER AND CHROMIUM IONS REMOVAL FROM AQUEOUS SOLUTIONS USING SAWDUST
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractThis work presents the removal of heavy metal ions (Cu2+ and Cr3+) from aqueous solutions with the use of pine (Pinus silvestris) sawdust. The experiments were conducted in a batch mode. Kinetic and equilibrium parameters of biosorption – which are best described by pseudo-second order and Langmuir models – were determined. The maximum sorption capacity at pH 5 and a temperature of 20°C for pine sawdust amounted to 21.47 mg/g for Cu2+ ions and 39.63 mg/g for Cr3+ ions, respectively.Therm... Autori: Anna Witek-Krowiak ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26210
REMOVAL OF ACID BLACK DYE BY PUMICE STONE AS A LOW COST ADSORBENT: KINETIC, THERMODYNAMIC AND EQUILIBRIUM STUDIES
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractThe removal of Acid Black 1 dye was investigated by acid treated pumice stone as a low cost adsorbent, since acidicmodifications were expected to improve the sorption capacity. The main components of the considered adsorbent were SiO2 andAl2O3 and acid treated pumice shows irregular structure. The effect of various parameters such as the initial dye concentration,the contact time, the temperature and the pH were studied. An increase of the contact time, the initial dye concentration or a... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26211
ENHANCED REMOVAL OF FECAL BACTERIA BY ZINC-MODIFIED ZEOLITE IN AN INTERMITTENT MEDIA INFILTRATION SYSTEM
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractThe reuse of a wastewater treatment system was investigated using intermittent media infiltration (IMI) to evaluate the fecalcoliform (FC) removal efficiency with natural zeolite containing clinoptilolite from the state of San Luis Potosí, Mexico and itszinc-modified form (Zeo-Zn). The municipal wastewater, which was from Saltillo, Coahuila, Mexico, was treated for FC analysisfor four months. The physicochemical properties of zeolite were analyzed, and their behavior as filter media for ... Autori: Sasirot Khamkure ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26212
COAGULATION COMBINED WITH FENTON PROCESS FOR THE TREATMENT OF WATER-BASED PRINTING INK WASTEWATER
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractWater-based printing ink has been used widely and perfectly in printing the packaging of food, drug, and wine products etc.However, due to the need of altering different colors of ink, most water-based printing ink wastewater was generated from theequipment cleaning process. Coagulation combined with Fenton process has been used for this kind of wastewater treatment inthis study, results showed that coagulation using polyaluminium chloride (PACl) as coagulant and ferrous sulfate (FeSO4) ... Autori: Xiangjuan Ma ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26214
LEACHING PROPERTIES OF LEAD PASTE IN SPENT LEAD-ACID BATTERY WITH A HYDROMETALLURGICAL PROCESS AT ROOM TEMPERATURE
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractIn this study, as part of developing a green recycling process of spent lead-acid battery that can avoid both smelting and electrowinning, leaching agent citric acid and other additives (such as sodium citrate and hydrogen peroxide) in aqueous media were reacted with spent lead-acid battery paste. PbO, PbO2 and PbSO4, which are the three main components in a spent lead-acid battery paste, were leached to form lead citrate precursor which was crystallized and then separated from the solut... Autori: Xinfeng Zhu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26215
FAST AND ECONOMICALLY VIABLE REMOVAL OF A CATIONIC DYE FROM AQUEOUS SOLUTIONS: KINETIC AND EQUILIBRIUM MODELLING
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractAdsorption of a cationic dye, methylene blue, from aqueous solutions by using sawdust (without any modification) by batchadsorbers was investigated. The surface characterization of the saw dust was carried out by Fourier transform infrared (FTIR) andscanning electron microscopy (SEM) and pHzpc of the surface was also determined. Effects of different parameters such ascontact time and initial concentration, temperature and pH on the process of removal were studied. The process of removal ... Autori: Sushmita Banerjee ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26216
TECHNO-ECONOMICAL EVALUATION OF POST- AND PRE- COMBUSTION CARBON DIOXIDE CAPTURE METHODS APPLIED FOR AN IGCC POWER GENERATION PLANT
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractGlobal warming is happening due to increasing level of carbon dioxide and other greenhouse gases into the atmosphere. In orderto reduce this rising level of CO2 emitted by human activities, carbon capture and storage technologies are being developed.The present paper investigates and compares, from a techno-economical point of view, two of the most used conceptual methods(post- and pre- combustion) for CO2 capture generated from the fossil fuel power generation sector. For post-combustio... Autori: Anamaria Padurean ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26217
INDICATORS FOR THE ASSESSMENT OF EXPOSURE TO GEOMORPHOLOGIC AND HYDROLOGIC PROCESSES
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractThe recrudescence and diversification of natural and anthropic hazards over the past decades are mainly attributed to an increasein the vulnerability of human communities. Understanding this vulnerability, as central predictive variable within the riskequation, proves to be a highly useful tool in land planning, namely in the development of various strategies. The current paperaims at proposing and integrating certain indicators into the methodology used in the evaluation of exposure to ... Autori: Adrian Grozavu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26218
REDUCING AMMONIA, CHEMICAL OXYGEN DEMAND AND COLOR FROM PRAWN POND WASTEWATER USING COMPOSITE MEDIA
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractLow water quality due to high levels of ammonia, chemical oxygen demand (COD), abnormal pH, and undesirable water color isprevalent in many prawn ponds in Malaysia. A composite medium used in the treatment of prawn pond effluent was examinedfor the reduction of undesirable parameters. The composite medium is a mixture of limestone, activated carbon, zeolite, and ricehusk. Experiments were conducted under three different conditions, i.e., sole aeration, adsorption, and adsorption with pre... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26219
AN EVALUATION OF MODIS/AQUA BIO-OPTICAL ALGORITHMS IN ARCTIC WATERS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractDespite the Moderate Resolution Imaging Spectrometer (MODIS/Aqua) presently collects data on operational basis, evaluationof its biogeochemical products from standard bio-optical algorithms is scare especially in Arctic waters. The present study isaimed to evaluate several MODIS/Aqua bio-optical algorithms and MODIS/Aqua remote sensing reflectance (Rrs) products inKongsfjorden waters on the western side of Svalbard, Arctic. Data sets consisting of in-situ measurements of radiometric quan... Autori: Palanisamy Shanmugam ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26220
STUDY ON THE RELATIONSHIP OF VISIBILITY AND AEROSOL CHARACTERISTICS IN TAIPEI
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractIn an urban environment, visibility strongly reflects human safety and welfare. Generally, visibility is dependent on particlescattering and absorption. The former is influenced by light wavelength, atmospheric gaseous species and particle characteristics,especially number and size distribution. Therefore, it is necessary to establish the relationship between visibility and particlecharacteristics. Furthermore, it is important to understand the formation mechanism of secondary aerosols. ... Autori: Chih-Ming Ma ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26221
DETERMINING THE EFFECTIVE WIDTH OF RIPARIAN BUFFERS IN KOREAN WATERSHEDS USING THE SWAT MODEL
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractRiparian buffers play an important role in improving water quality, providing wildlife habitat, and reducing suspended sedimentsand pollutants entering the water body. The efficiency of pollutant reduction by a riparian buffer is greatly influenced by thewidth of the riparian buffer. In this study, the Soil and Water Assessment Tool (SWAT) model was applied to the YudeungStream watershed, Daejeon Stream watershed, and Gap Stream watershed to determine the most effective width of the ripa... Autori: Jongpil Moon ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26223
GREEN TECHNOLOGY FOR 6-AMINOPENICILLANIC ACID PRODUCTION - STUDY OF PENICILLIN G HYDROLYSIS IN A BIOREACTOR WITH MOBILE BED OF IMMOBILIZED PENICILLIN AMIDASE UNDER SUBSTRATE INHIBITION Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractThe efficiency of enzymatic hydrolysis of Penicillin G to 6-Aminopenicillanic acid under substrate inhibition has been analyzedfor a bioreactor with mobile bed of immobilized penicillin amidase. The results indicated that the optimum values of temperatureand pH remained the same as for homogeneous hydrolysis using free enzyme. The inhibitory effect induced at higher PenicillinG amount in liquid phase was attenuated by increasing the size of the biocatalyst particles. For this reason, at ... Autori: Ramona Mihaela Matran ISSN: 1843 - 3707 |