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

AbstractEcological economics is an emerging field that offers significant room for creativity and innovation at the conceptual level on how to operationalize sustainability. It integrates economics with ecology and many elements from both the natural and social sciences to provide an integrated perspective on environment-economy interactions. A major policy dilemma that ecological economics addresses is how policy-makers can influence markets, so that they receive the 'right' signals from the na...
Autori: Kes McCormick
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25106

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

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

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

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

<!--[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

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

The use of gasoline oxygenated with MTBE (methyl tert-butyl ether) reduced significantly air pollution (16 - 23% lower emissions of CO and 18% lower emissions of unburned hydrocarbons) but increased water pollution. There is no European or national regulations for MTBE in drinking water except for Denmark, which has set a limit value of 30 Âľg/ L for MTBE. USEPA proposed a maximum concentration of 20- 40 Âľg/L. This paper is a review with 70 references on the MTBE production, use, properties and...
Autori: Camelia Beţianu, Florina Ungureanu, Loredana Branza, Lucian Vasile Pavel, Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25122

AbstractAcademics have had numerous responsibilities during the centuries. However, now with global climate changes and the attendant, looming crises, it is increasingly crucial that administrators, faculty members, graduate, undergraduate students, staff members and alumni work together with governmental, non-governmental and industrial members in envisioning societies that are truly sustainable. The visions must then be effectively and efficiently implemented in numerous locations throughout t...
Autori: Donald Huisingh
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25149

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

This paper brings a review on the trends of arc plasma reactors, in the new millennium, as an alternative contribution to the reduction of carbon emission at global level. The development of technically and economically feasible plasma processes for the production of hydrogen is analyzed. Literature provides data on achievable intensification of the involved chemical processes comparing with those from the classic reactors. The hydrogen production is studied starting from hydrocarbons and alcoho...
Autori: Iulian Rusu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25128

The paper presents some investigations and assessments on the impact induced in the environment by a milk processing unit which makes a variety of products. The balance sheets for raw materials were elaborated for all the activities carried on the location; based on these, the synthetic indexes of the impact on the environment were drawn, as well as the specific factors: the extent of the usage of raw material, materials and specific effluents....
Autori: Adriana Ilisoi, , Letitia Cezar, Mihai Nicu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25131

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

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

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

AbsractThe paper highlights the inventory of landfill, focusing on the feasibility study of solid waste disposal sites inventory in the Republic of Moldova and existing situation in waste management, including landfills analysis. The paper contains relevant information on landfills characteristics, their location and description of disposed waste. Technical assistance for the study was provided by the regional project Capacity building for improving the quality of greenhouse gas inventories (Eur...
Autori: Tatiana Tugui
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25135

AbstractFlocculation performance of three chitosan samples with different viscosities (?§ = 400, 800 and 1000 mPas) and two strong synthetic polycations of integral type (PDADMAC and PCA5) on two model aqueous suspensions (kaolin and bentonite) was investigated. The flocculation results indicated that all the polycation samples were efficient in the kaolin flocculation, the turbidity being completely removed at approximately the same polycation dose; the flocculation window ranged between 2.7 an...
Autori: Ecaterina Stela Dragan, Luminita Ghimici, Marcela Mihai
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25201

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

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

AbstractMunicipal solid waste (MSW) management is an important and challenging issue for sustainable development. It is also one of themost controversial problems and a subject of an ongoing debate between different interested parties. A particularly controversial issue is MSW incineration (with or without energy recovery) which has in many countries become a socially unacceptable option for dealing with solid waste. On the other hand, the increasing amounts of waste each year demand immediate a...
Autori: Adisa Azapagic
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25147

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

The article presents the principles on which the upgrading of the ground and surface water treatment plants, respectively the implementation of new technologies are based. The outcome obtained in Timisoara consequently to applying the aforesaid principles and the strategies for the improvement in drinking water quality are also provided....
Autori: Ilie Vlaicu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25151

AbstractOne of the basic principles in the European policy to cope with the growing challenge of water scarcity is that water demand management should be considered before opting for additional water infrastructure. The implication of this is that water must be treated as an economic good, which means that the "user's pays' principle"has to be implemented. At the same time there is much political consensus that the water price has to be "equitable". Water can be subsidized without violating the ...
Autori: Lars Hansson
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25155

The amperometric response in dynamic or fixed potential conditions, as cyclic voltammetry (CV) and chronoamperometry (CA) of a copper oxide-copper electrode was studied and proposed for the fast characterization of the simulated wastewaters containing acetylsalicylic acid (ASA) and sulfur compounds, i.e., thioacetamide (TA) as organic pollutant models. The additivity of the individual amperometric signals in the overall response of the electrode for mixed solutions corresponded to over 95% recov...
Autori: Aniela Pop, Ciprian Radovan, Florica Manea, Georgeta Burtica, Ilie Vlaicu, Joop Schoonman, Marcel Morariu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25158

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

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

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

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

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

Contain all the articles from this issueConsiderations concerning ecological footprint of RomaniaNicolae Peiu, Matei MacoveanuEffects of some industrial wastes on different plant species in hydroponics experimentsRuxandra Bodarlau, Carmen-Alice Teaca, Valentin I.Popa The pollution index, a new technical tool in water quality assessmentMihai Nicu, Marcel Perjoiu Solid waste management in pulp productionDan Gavrilescu Curricular development perspectives: education for sustainabledevelopmentCarmen ...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25174

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

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

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

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

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

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

Contain all the articles from this issueICEEM/02 - ENVIRONMENTAL ENGINEERING SECTION"Treatment Technologies for Gaseous Fluxes"Surface chemistry studies on molybdena–alumina catalystTatiana Yuzhakova, ?kos R?Šdey, Endre Domokos, J??zsef Kov??cs, Monica Caldararu, Cristian Hornoiu, Mariana Carata, G.Postole, Cornel Munteanu, Larisa Strukova, Jozse FazakasHebicidal behaviour of a new N,N'- biquaternary salt of 4,4'- bipyridineServilia Oancea, Marinela Irimia, Gabriela Carja, Anton Airinei, Nicu...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25189

AbstractThis paper presents the architectures of wireless sensor networks integrated in a complex monitoring system for a waste water treatment plant. Presently is a very expressive trend to use wireless technology for smart sensor network communication. The measurement system avoids manual data storage and an Internet server assures remote access from a station with a Web browser. ...
Autori: Florina Ungureanu, Marcelin Iulian Balasca
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25190

Include urmatoarele articole:� Removal of persistent organic pollutants from textile wastewater by membrane processes� Sustainability evaluation of an urban residential settlement� Removal of zinc (II) from aqueous solutions by romanian sphagnum peat moss� Development trends of cold plasma reactors in the global context of carbon emission reduction� Assessing the potential of wind power in Romania within Kyoto targets� Research on the impact induced in the environment by milk process...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25198

Include urmatoarele articole:� Keynote Lectures Energy from municipal solid waste: large-scale incineration or small-scale pyrolysis?� Electrical properties of SnO2-Pt/Al2O3 in reduction atmosphere� Corporate management tools to address sustainability Challenges. A reflection on the progress and difficulties experienced during the last decade� Emerging academic responsibilities and opportunities for promoting regional sustainability� Challenges for integrated water resources management...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25200

? 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

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

Include urmatoarele articole:� "Waste not, want not" a study of household attitude toward recycling of solid wastes� A kinetic model for the crystal violet mineralization in water by the electro- fenton process� Development of a coagulation/flocculation predictive model for turbidity removal from tehran water treatment plants� Removal of cadmium (II) from aqueous solutions by sphagnum moss peat: Equilibrium study� Environmental sustainability based on fuzzy models� Impact of dust emi...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25207

Include urmatoarele articole:� Synthesis of Ferrierite/ZSM-35 type zeolite with ethylenediamine as template� Recovery of p-hydroxybenzoic acid from wastewaters by reactive extraction 1. Extraction mechanism and influencing factors� Relationships between metals extent and cytological characteristics at Prunus persica L. pollen� Smoke Emissions From Diesel Vehicles: A Case Study� Carbon dioxide generation - implications for romanian pulp and paper industry � Enhanced decolorization of ...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25208

Include urmatoarele articole:� Cost sensitivity analysis by Monte Carlo simulation� Mathematical modeling of gas drying by adsorption� Methyl isobutyl ketone combustion over Pt/Al2O3 catalyst� Distribution of oxygen transfer rate in stirred bioreactors with simulated broths� Unsteady heat transfer inside an elliptic cylinder� Triphasic external-loop airlift reactors. Hydrodynamic and dispersion studies� Sustainable combined utilization of renewable forest resources and coal in Roma...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25209

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

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

AbstractThe paper presents original results concerning concentrations of eight heavy metals in soils adjacent to two improperly built municipal waste deposits located in Eforie Sud and Techirghiol, Constanta County, Romania. Measurements have been done on surface and depth soils, during April-October 2006. The applied analytical technique for metal determination was flame atomic absorption spectrometry (FAAS). The mean measured values ranged as follows (in mg/kg dry weight): Cd: 0.09 - 0.15; Co:...
Autori: , Elisabeta Chirilă, Narcisa Elena Ilie
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25213

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

AbstractThe extraction of some pollutants from different matrices, the treatment of hazardous and infectious wastes, the destruction of refractory compounds and the prevention of noxious emissions are the main environmental applications of microwave-assisted chemistry. The advantages and disadvantages of this technique are also considered....
Autori: Carmen Zaharia, Georgiana G. Surpăţeanu, Mioara Surpăţeanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25217

AbstractThe present paper proposes the design of a modules system of measurement and control of data distributed transmission, implemental on automatic irrigation systems of central pivot or linear movement type. By this it is intended to obtain a complex irrigation system that allows optimization of nutrient application....
Autori: Codrin Donciu, Marinel Temneanu,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25219

AbstractThe absorption of CO2 into an aqueous solution with 1.45 mol/L 1,5,8,12-tetraazadodecane (APEDA) polyamine has been studied at three temperature (298, 313, 333 K) in a Lewis type absorber with a constant gas-liquid interface area of (15.34 Âą 0.05) x 10-4 m2. The experimental results have been interpreted using the equations derived from the two film model with the assumption that the absorption occurred in the fast pseudo- first- order kinetic regime. The results confirmed the validity ...
Autori: Chakib Bouallou, Ilie Siminiceanu, Ramona-Elena Tataru-Farmus
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25223

AbstractThis paper discusses the applications of synthetic PONILIT GT-2 anionic polyelectrolyte as soil conditioning agent into a site with high electric field around. All experimental data conclude that the use of a polymeric conditioning agent was increased the soil ability to support vegetation expressed as germination degree for some grass species (e.g., Raigras aristat). The performed values for germination degree increase from 3.05 % to 12.20 % when was added fertilized soil, and respectiv...
Autori: Carmen Zaharia, Ioan Ivanov Dospinescu, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25225

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

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

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

AbstractBased on the polarization curves and electrochemical impedance spectroscopy (EIS) in the case of three commercial alloys (Wirolloy, NicromalSoft and VeraSoft) maintained in artificial saliva, it was established the type and the intensity of the corrosion process by means of the corrosion currents value. The passivation of all the samples occurred spontaneously at the open circuit potential. The corrosion currents value decrease after the alloys maintenance in the corrosive medium due the...
Autori: Daniel Mareci, Gina Ungureanu, Julia Claudia Mirza Rosca, Neculai Aelenei
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25235

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?ˇ2,28% sulphide sulphur, 2,53?ˇ2,58% Fe, 0,07% Cu, 0,05% Zn, 0,36?ˇ0,40% Pb, 0,008?ˇ0,013% Ca and 3,85?ˇ7,97% 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

AbstractThe behaviour of three types of steel, with a variable carbon concentration (from 0.20 to 0.40 %) is studied in medium of ethylene glycol - 10 % methanol - 5 % succinic or adipic acid with water concentration varying between 1 % to 5 %. IR spectroscopy, Xray diffraction and chemical analysis were the methods used for corrosion compounds analysis. The weight losses were measured; also the polarization curves were plotted and the corrosion parameters were established. Based on the obtained...
Autori: Daniel Mareci, Daniel Sutiman, Ioan Iordache, Mircea Teodor Nechita
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25240

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

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

AbstractAs a member of the European Union, and as part of the Kyoto Protocol, Romania has the obligation to implement environmental legislation regarding greenhouse gases (GHG) and to take appropiate actions for emissions reduction. The paper deals with Romanian GHG legislation and with its requirements concerning monitoring, reporting and reduction of GHG emissions, within the field of pulp and paper manufacturing....
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25246

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

The heavy metal concentrations exceeding the standard admissibility, determine modifications of some cytological parameters. Therefore, by this paper, there were determined the concentrations of copper, iron, manganese and zinc from Prunus persica L. pollen grains (Research-Development Fruitgrowing Station, Constantza, Romania) using wet digestion followed by flame atomic absorption spectrometry (FAAS). Then, the main cytological parameters (such as citological viability and germination capacity...
Autori: Dan Mandalopol, Elena Doroftei, Manuela Rotaru-Stancic, Simona Dobrinas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25249

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

AbstractThe crystallization of ferrierite/ZSM-35 zeolite at 180 Âą 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

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

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

AbstractTogether with other public utilities, water supply systems management aims to provide an efficient operation of the system and lower operational costs. In complex water distribution systems there is a large variety of consumers, which differ from one another not only by values of inflows, but also by how this inflows vary from hour to hour. This paper presents a self-organizing based approach to the problem of classification of water consumption profiles from the nodes of a water distrib...
Autori: Gilda Gavrilaş, Mihai Gavrilas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25254

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

AbstractAdvanced closing of paper machine circuits results in the accumulation of the dissolved and colloidal substances (DCS) in the process water. At a critical concentration, the DCS are destabilizing even by small variations in paper machine parameters, producing operational and product quality problems. This article presents results of lab experiments simulating the process water recycling in short circuit of paper machine, without and with addition of fixing agents. Tests were performing w...
Autori: Dan Belosinschi, Elena Bobu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25261

AbstractThe purpose of this paper was to quantify the environmental impact and risk applying a new integrated method designed as a soft SAB. The evaluation of impact and risk induced in environment was performed for surface  waters (Bahlui River, IaÂ?i), considering the presence of some minerals and heavy metals in surface water in high concentrations. The new method for integrated environmental impact and risk assessment that considers the pollutants concentration levels in surface water w...
Autori: Brindusa Robu, Dumitru Bulgariu, Laura Bulgariu, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25262

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

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

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

AbstractCatalytic combustion of methyl isobutyl ketone in diluted air streams over Pt/Al2O3 commercial catalyst was experimentally investigated. The experiments were carried out at space velocities between 180 000 - 600 000 cm3/ (gcat¡h) and ketone concentrations in the range of 900 - 2600 ppmv. On the studied domain of working parameters, carbon monoxide was not detected, although some organic intermediates were formed (especially acetic acid). Their presence was detected in the product mixtur...
Autori: Anamaria Soare, Cristina Gheorghiu, Grigore Bozga, Magdalena Boşomoiu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25271

AbstractThe cost sensitivity analysis of a chemical process was carried out through a sequence of three stages, using three different software applications. In the first stage an alkylation process was optimized with GAMSÂŽ software, the objective function being the profit. This optimization was repeated for the values of five different costs in the frame of a factorial experiment. In the next stage, the objective function-costs dependence was quantified with an artificial neural network, obtain...
Autori: Alexandru Woinaroschy
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25273

AbstractIn India, transportation sector is growing fast and the number of vehicles on Indian roads is increasing at a rate more than 7 percent a year. During the period of 50 years from 1951 to 2001, the number of vehicles has increased from 0.3 million to 43 million i.e. an increase of almost 143 times. This has led to overcrowded roads and noise pollution. The transportation sector is one of the major contributors to noise in urban areas, accounting to as much as 55 percent of total noise on t...
Autori: Arvind Kumar Shukla, Jyoti Bhushan Srivastava, Manoranjan Parida, Sukhvir Singh Jain
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25279

AbstractThis paper presents experimental and theoretical studies regarding the behavior after heat treatment of an AlCu4Mg1 aluminum alloy with positive effect on corrosion resistance. On the basis of these experiments and the regression data obtained, an analysis regarding the influence of heating parameters on quenching and aging in order to obtain a certain stress was made. Two cases were considered: stress and quenching temperature are fixed and aging temperature was determined; stress and a...
Autori: Adrian Dima, Alina Adriana Minea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25281

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

AbstractThe corrosion resistance of three types of low-carbon steels in water-contaminated mixtures of adipic acid and methanol was investigated. The concentration of water in the organic mixture was progressively raised from 1% to 5%, while the carbon concentration in the steel samples varied from 2% to 4%. Infrared spectroscopy (IR) and X-ray diffraction (XRD) were used to investigate the insoluble corrosion products. Based on the weight losses measurements, on the polarization curves and on t...
Autori: Adrian Cailean, Daniel Mareci, Daniel Sutiman, Mircea Teodor Nechita
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25287

AbstractIn this work it had been tested the recovery of some compounds like: Fe2O3, TiO2, PO4 3- ions, Al2O3 from the sludges, which result in the industrial facilities for output of pure uranium dioxide. Solubilization of the chemical compounds from the uraniumwastes was performed in strong acidic media, using adequate methods....
Autori: Alexandru Cecal, Doina Humelnicu, Romeo Iulian Olariu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25288

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

Include urmatoarele articole:� Removal of nickel from aqueous solution by Nordmann FIR (ABIES Nordmanniana (STEV.) SPACH SUBSP. Nordmanniana) cones� Determination of heavy metals in extracts and macerates from garden flowers� Biological phosphorus removal in a high performance single reactor � Advanced Cd2+ removal on dispersed TioO2-fly ash � Remediation techniques for contaminated soils� 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

AbstractThe purpose of this study was to investigate the immobilization of denitrifying bacteria on microbial cellulose (MC) for biological denitrification. A novel denitrifying bacterium, Pseudomonas stutzeri, was immobilized in microbial cellulose and introduced into an up flow packed bed reactor in order to remove nitrate from synthetic influent. The MC presented the high biomass concentration throughout the experiment, achieving 3.4 mg biomass/g support. The efficiency of the system for deni...
Autori: Abbas Rezaee, Hatam Godini, Hossein Bakhtou
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25302

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

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

AbstractThis paper discusses the results of study concerning the interaction between the birch veneer and some compounds with biocide potential action are presented. With this end in view the samples of veneer were immersed in solutions with a concentration of 5% of the following products: unmodified straw lignin or modified through hydroxymethylation, furan resin and tannins dissolved in 0.1 N ammonia solution. To make a comparison, the same combined treatments were applied, using ammonia solut...
Autori: Adina-Mirela Capraru, Elena Ungureanu, Valentin I. Popa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25309

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

Include urmatoarele articole:� Biomass - A source of chemicals and energy for sustainable development � Equilibrium study of Pb(II) and Hg(II) sorption from aqueous solutions by moss peat� Wood-based epoxy resins and the ramie fiber reinforced composites� Studies on the interaction between birch veneer and compounds with biocide potential action� Effect of methanogenic inhibitors, inocula type, and temperature on biohydrogen production from food components� Energy from biomass in pul...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25313

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

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

AbstractMilk products are a very important human nutrient since their consumption has increased in recent years. Good quality measurements are essential to control and maintain milk products and processes quality, both in manufacturing, trade and in research. The presence of toxic elements in powdered and liquid milk may create significant health problems for people. The aim of this paper was to determine the content of major and minor elements in different milk samples, sold in major supermarke...
Autori: Alina Soceanu, Gabriela Stanciu, , Simona Dobrinas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25320

AbstractThe question of whether environmental assessment has achieved its goal of helping to reach better decisions has continually engaged the attention of academics, policy makers and environmental impact assessment practitioners. Answering this question requires several different groups working together and/or in sequence, and examining the effectiveness of environmental impact and risk assessment. EIA has tended to focus on the identification of impacts associated with planned activities or ...
Autori: Brindusa Robu, Elena Doinita Carlig, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25321

AbstractThe paper proposes a solution for life quality improvement by changing the individual’s mentality and creating a sustainable behavior. The solution consists of the development of a psycho-behavioral pattern starting from the Gorgon experiences. The latter are hurtful experiences in the individual’s life the effect of which is a complete or partial emotional components blockage. The hindrance of these components performance affects the individual’s behavior, placing him or her in a ...
Autori: Brindusa Robu, , Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25323

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

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

AbstractThe paper presents the main causes of the sea accidents and disasters, which call for the implementation of a sea pollution and safety management system (SMS) in the navigation companies, for certification purposes, in compliance with the International Management Code for the safe vessel operation and pollution prevention (ISM). For this purpose the objectives of the ISM codes are presented and which are to be found in the implemented Management System.From the main causes of the safety ...
Autori: Carmen Gasparotti, Lucian Georgescu, Mirela Voiculescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25330

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

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

AbstractImproving access to safe drinking water can result in multi-dimensional impacts on people’s livelihood. This has been aptly reflected in the Millennium Development Goals (MDG) as one of the major objectives. Despite the availability of diverse and complex set of technologies for water purification, pragmatic and cost-effective use of the same is impeding the use of available sources of water. Hence, in country like India simple low-energy technologies such as solar still are likely to ...
Autori: , Nanda Kumar, Santosh M. Avvannavar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25337

A study was conducted to investigate the organic compounds residues in different types of coffee from market inThe detection limits ranged from 0.02 ng/kg to 0.04 ng/kg and quantification limits were 0.2 ng/kg. Calibration and recovery studies gave satisfactory results. Concentrations of OCPs in coffee samples varied from 0.001 mg/Kg to 0.007 mg/Kg. The methods provide a rapid and accurate determination of these organic compounds in coffee samples....
Autori: Gabriela Stanciu, Mariana Popescu, , Simona Dobrinas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25338

- 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

Include urmatoarele articole:� Composite membranes with cross-linked matrimid selective layer for gas separation� Determination of organic compounds from different types of coffee by Hplc and Gc-Ecd analysis� An integrated assessment of the suitability of domestic solar still as a viable safe water technology for India� Investigations on the possibility of natural hemp fibers use for Zn(II) ions removal from wastewaters� Removal of acid red 398 dye from aqueous solutions by coagulation...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25340

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

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

AbstractPaint sludge of automotive industry contains heavy metals and other toxic substances. Due to this matter, it has a high pollution potential. Incorrect disposal of paint sludge led to kinds of environmental pollution. Recycling and reusing of wastes can be one of the best solutions for decreasing of pollutant entrance to environment. The purpose of this study was to present a new method of extracting the main components of paint sludge, for determining concentration of elements in paint s...
Autori: Azadeh Akhavan Bloorchian, Seyed Mostafa Khezri
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25346

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

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

AbstractA present challenge for research is to determine how to use the combination of oil, gas and coal most efficiently with the minimum environmental damage. In this paper the authors have compared technologies to produce the electricity using natural gas and coal. The objective of this paper consists in evaluation of the life cycle assessment of the natural gas and coal in order to compare their greenhouse gases (GHG) emissions. In this way, three systems with and without CCS were examined: ...
Autori: Adrian-Alexandru Badea, Cristian Dincă, Gheorghe Lăzăroiu, Tiberiu Apostol
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25355

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

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

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

AbstractThe main goal of this study is to determine the trend in exhaust concentrations during the last 12 years. Accordingly, a nondisperse infrared gas analyzer was used to measure the concentrations of carbon monoxide (CO) and hydrocarbons (HC) emitted from vehicle exhaust. A total of 449 vehicles distributed across model years ranging between 1968 and 2005 were tested under idling conditions. The results indicated that there is a strong relationship between the age of the vehicle and the con...
Autori: Kamel Al Zboon
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25365

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

Include urmatoarele articole:� CsHSO4/mesoporous silica composites - new electrolytes for solid acid fuel cells� Trend in exhaust emissions from in-use gasoline vehicles� Analysis of distribution of oxygen transfer rate in stirred bioreactors for bacterial broths� Electrochemical characteristics of Ti6Al7Nb alloy in Ringer's solution� Pulsed high voltage discharge technology as a new method for killing Hepatitis C virus (HCV) cells� Hydrodynamic modelling of pollution with LNAPL gene...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25367

Include urmatoarele articole:� Environmental Engineering and Management Journal, Vol. 8 Nr. 2� Bioengineering aspects of tissues culture bioreactors for medicine and environmental applications� Removal of bis (1-chloro-2-propyl) ether from wastewater using sonodegradation and biodegradation� A novel plasma reactor for toluene decomposition in contaminated air flow� Study of the copper (II) removal from aqueous solutions by chelating resin Purolite S930 � Analysis of some metal levels...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25371

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

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

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

� Physiological changes in seedling germination and growth plant under chemical stress conditions� Studies on sorption and transport processes of cadmium in soils� Assessment of the anthropogenic impact on water systems by fluorescence spectroscopy� Research on the effects of soil improvement by fertilization on the quality of winter wheat� Halotherapy: From ethnoscience to scientific explanations� Study regarding the sorption of erythrosine from aqueous solution onto soil� Hydroxy...
Autori:
ISSN: 1582 - 9596
http://www.ecozone.ro/reviste.php?RID=25375

AbstractThe quantification of heavy metals presence in the environment is a very important aspect regarding water quality control. The limits for those metals are very well established by Romanian laws and the essence of every validation report is to prove that the method, the apparatus and the operator can reach the established limits. In the present paper such a validation report is presented, proving the appropriate use of Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AE...
Autori: Irina Dumitriu, , Ioana Raluca Bunghez, Rodica - Mariana Ion
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25380

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

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

Abstract Based on qualitative research conducted on teams of Romanian students in Engineering and Management that participated in transnational teams within the framework of an international simulation program on global technologies for sustainable development, specific features in relation with the development of entrepreneurship capacity (values, skills competencies) were identified and examined. It was found that specific cultural biases influenced the way the Romanian students approached var...
Autori: Aida Carmen Hutu, Silvia Avasilcăi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25384

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

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

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

AbstractThe adsorption characteristics of n-hexane vapors from gaseous stream onto two types of hypercrosslinked polymeric resins (MN 202 and MN 250), and a bituminous granular activated carbon (AC 20) was investigated. The n-hexane influent concentration ranged from 2100 to 4500 ppm and the adsorption processes were performed at 30, 40 and 50 ?C. Thermodynamic potentials ?H, ?S, and ?G and isosteric heats of adsorption were calculated from experiment performed at different temperatures (30-50?C...
Autori: Adela Marilena Buburuzan, Cezar Catrinescu, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25393

AbstractPersistent organic pollutants (POPs) are toxic chemicals that adversely affect human health and the environment around. This group of priority pollutants consists of pesticides, industrial chemicals and unintentional by-products of industrial processes. Natural materials, waste from industry and agriculture and bioadsorbents can be employed as inexpensive adsorbents to remove POPs from environmental components by sorption processes. The paper presents various natural sorbents and some ou...
Autori: Laura Carmen Apostol, Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25395

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 ?Źm 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

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

Abstract The potential of using ultrasonic irradiation and microbiological treatment for the removal bis(1-chloro-2-propyl) ether from aqueous solutions has been investigated. Experiments were performed in a continuous bioreactor, 3500 mL volume, and in an ultrasonic bath respectively, using frequencies of 38+1kHz and applying a power of 30 W. Under these conditions, the sonochemical conversion of ether was found to be superior to the biological one. The ultrasound method was improved by air ...
Autori: Mihaela Iordache, Vasile Lucian Pavel, Lim Myunghee, Ioan Iordache
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25403

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

Abstract Protection of plants from diseases, pests and weeds plays a decisive role in agricultural development, as an essential part in planning and policy of numerous countries. Since the plant protection products are mainly chemicals and may be not only poisonous for humans and fauna, but they may also pollute water bodies, ground water and soil with hazardous pollutants, their use have to be environmentally friendly and sustainable. The paper discuss some aspects of benefits and risks con...
Autori: Manuela Olga Pogăcean, Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25405

Abstract A set of experimental data resulted from environmental monitoring and its informational content has to be revealed and checked for its statistical character. As a result in this paper the aim was to verify if the environmental monitoring data obtained for a specific air pollutant monitored during three years presents statistical properties. Based on the results obtained by applying statistical requirements such as fixed location, fixed variation, randomness and fixed distribution, a ...
Autori: Irina Meghea, Mihaela Mihai, Ioana Lacatusu, Tiberiu Apostol
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25410

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

Abstract A facile and straightforward synthesis route, based on the anionic clay structural â€?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

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

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

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

Abstract The paper highlights the combustion possibilities of crude vegetable oils as fuels for stationary application. This is an opportunity of a new utilization in Romania of tee vegetable oils, for electricity production and heating systems, instead of the current situation of using in transportation as biodiesel fuel. The research focuses on crude vegetable oils obtained from some indigenous cultures: rape, soy, sunflower. An overview of the agricultural potential of oleaginous plants is...
Autori: Ion Oprea, Ionel Pisa, , Tudor Prisecaru, Gheorghe Lazaroiu, Gabriel Negreanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25424

Abstract Changing the working space by introducing some radiant panels has the purpose of intensifying the heat transfer by convection and radiation. By centralizing the experimental results, has been obtained an energetic saving of 28.67 – 32.74 % by using radiant panels; the heating speed of the charge raises with almost 50 % and the heating time of the charge decreases. In conclusion, changing the working space by introducing some radiant panels inside the furnace leads to important ener...
Autori: Alina Adriana Minea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25426

Abstract This paper aims to analyze theoretically events in the economy - ecology - environment (natural resources) mega - system. This analysis includes methodologies making use of the first and second thermodynamic principles (for approaching the waste role in technological processes contour toward environment and the entropy variation importance in the main environmental segments), the application of systems theory and theories relating to emergy. The obtained results allow us to propose, ba...
Autori: Avram Nicolae, Cristian Predescu, Maria Nicolae, Mirela Gabriela Sohaciu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25428

Abstract Transition to a more sustainable economy and the consequences of the Kyoto protocol on global climate change, includes a shift of feedstock for energy and chemical industries from fossil fuels and petrochemicals to renewable resources. The use of vegetal fibers as major source of renewable resources represents a valuable alternative both from economical and environmental points of view. Traditionally, vegetal fibers are widely used in textile industry, paper manufacture, and packagin...
Autori: Dan Gavrilescu, Bogdan Marian Tofanica, Adrian Catalin Puitel, Puiu Petrea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25431

Abstract One of most important concern for the food specialists is to solve the sociologically impact problems in parallel with the decrease of the pollution degree through the advanced capitalization of byproducts from the food industry. The paper debates the capitalization of beer industry byproducts known as malt radicles, and their use in the bakery industry, for the obtaining of dietetical bread. Along the malt radicles, KCl and Prima Pan improver were added to the bread’s dough, and...
Autori: Monica Tulbure, Domnica Ciobanu, Adrian Gabriel Feraru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25432

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

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

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

Abstract The paper approaches the environment issue in the context of welding fabrication processes. The introduction presents, synthetically, the place and dimension of welding in the manufacturing industry. Negative aspects regarding the image of weldingdue to the impact on the environment are identified. The driving factors and the main development trends of environmentalfriendly welding processes are analyzed. An action program to change the image of welding from the present "3 D - Dirty,...
Autori: Dorin Dehelean
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25445

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

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

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

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

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

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

Abstract Arsenic (As)-contaminated drinking water is a major problem around the world. The removal efficiency depends strongly on the size of Fe3O4 sorbents.Fe3O4 prepared in laboratory is more efficient in the removal of As and is also more easily recovered from column of magnetic separator than the commercial materials. This would be beneficial in a water treatment system because the As-contaminated Fe3O4 could be flushed from the column permitting reuse of the separator system. The dispers...
Autori: Ionel Balcu, Adina Segneanu, Marius Mirica, Mirela Iorga, Catalin Badea, Iuliana Firuta Fitigau
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25456

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

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

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

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

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

Abstract Wood has been used as an engineering material because it is low in cost, renewable and strong and it requires low processing energy. Wood has many excellent properties that result from its exceptional combination of microstructural, ultrastructural and molecular features. The main drawback is its dimensional instability in the presence of moisture, which can affects also the biological stability. Wood is susceptible to degradation in a number of ways, including rot or decay, insect a...
Autori: Lucia Dumitrescu, Ileana Manciulea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25473

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

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

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

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

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

Abstract The process of quality assurance in the study of foreign languages in Technical Higher Education builds and increases employers’ confidence in the graduates. Thus, acquiring technical and communicative competences becomes a â€?must?? when entering a competitive job market. The qualitative results of our research have revealed some of the factors sustaining students’ excellence performance in the study of foreign languages. In conclusion, the elaboration and implementation o...
Autori: Anca Greculescu, Gheorghe Solomon
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25486

Abstract The paper presents a case study developed within the Danube Environmental Center from the Romanian University â€?Gheorghe Cristea?? of Bucharest. This center is targeted toward linking the material science with the sustainable development concepts, in order to move the awareness of the community alongside sustainable development, as a leading concept of the European development, which becomes essential for the new members as well, in the environmental education field, the geopo...
Autori: Lidia Cristea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25489

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

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

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

Abstract A simple method to synthesize copper, nickel and Cu-Ni nanotubes in alumina membrane by direct electrochemical deposition technique is presented. This work is divided into three main parts: - elaboration of the nanostructured metals supported on Cu and Ni electroconductive support; - SEM - EDX characterization of nanodeposits; - electrochemical characterization of the nanostructured electrodes; Cu and Cu-Ni nanostructures were obtained by deposition through an alumina membrane (...
Autori: Maria Jitaru, Ana-Maria Toma, Mihaela-Claudia Tertis, Ancuta Trifoi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25496

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

Abstract Biofuels represent a possibility for renewable resources conversion, storage and distribution. Today, diesel oil is commercialized only blended with biodiesel, and according to the 30/2003 Directive of the EU, 5.75% of the total fuels used in the transportation sector must be represented by biofuels by the end of 2010. Biodiesel can be produced from vegetable oils, animal fats and used oils. Viscosity is one of the most important characteristics of liquid fuels. The viscosity of liqu...
Autori: Irina Nita, Dan Mandalopol
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25499

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

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

Abstract The rationality of allotting the resources for investments in sustainable agriculture needs the selection of alternative projects depending on numerous factors. The decision analysis process allows the identification of one variant with the highest utility that corresponds to the exigencies of economic, social and environmental impact efficiency. The integrated approach of the objectives specific for sustainable development actually leads to the selection of the investment portfolio ...
Autori: Camelia Burja
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25512

Abstract There are different parameters, which may affect packaging and its sustainability. Up to date, several methodologies and tools have been developed not only to quantify but also to assess the environmental impacts from packaging. Different criteria and indicators have been used depending on the objectives, scope and nature of the evaluation. One of the software tools developed is that one that assesses the packaging sustainability according to the Sustainable Packaging Alliance (SPA) ...
Autori: Jose Jorge Espi Gallart, Jose Luis Vivancos Bono, Mercedes Hortal Ramos, Susana Aucejo Romero
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25515

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

Abstract In the paper is analyzed the possibility of using some industrial wastes for obtaining new building materials. From the industry or from the power station a lot of by-products or wastes have resulted and their storage is a big problem for the environment. In the building material industry a part of these wastes can be used in different ways: for replacing the cement, as addition in concrete, as component of cements, in the mixture of polymer concrete, etc. In the present investigati...
Autori: Marinela Bărbuţă, Nicolae Taranu, Maria Harja
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25525

Abstract Recovered paper is a valuable raw material for the paper industry at global level. Paper made from recovered paper reduces the demand on forests, uses less energy, water and chemicals, produces less toxic releases and reduces solid wastes that must be landfilled or incinerated. This paper is mainly aiming to analyze the driving forces for sustainable use of recovered paper and to discuss the benefits of recovered paper use on paper and board production, as well as on the environment....
Autori: Dan Gavrilescu, Elena Bobu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25528

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

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

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

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

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

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

Abstract The paper makes qualitative and quantitative analyses of heavy metal contamination of surface waters in Iasi City. The examination of data acquisited from the specific sections of the rivers Bahlui (upstream section, Iasi water treatment plant, Holboca section, downstream section, Iasi water treatment station), Nicolina (quarterly data from the established monitoring system) was performed, based on data provided by the Environmental Protection Agency of Iasi District and Prut Water D...
Autori: Corneliu Horaicu, Florea Cornel Gabrian, Irina Grozavu, Catalin Constantin Calu, Monica Horaicu, Brindusa Robu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25546

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

Abstract: This paper analyses and discusses the concept of water footprint, developed in order to have an indicator of water use in relation to consumption of people. The water footprint of a country is defined as the volume of water needed for the production of the goods and services consumed by the inhabitants of the country. The use of water resources comprises water use in the agricultural, industrial and domestic sectors. The overall objective of water management, which adopts integrate...
Autori: , Simona-Andreea Ene Popa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25556

Abstract The purpose of Strategic Environmental Assessment (SEA) is to ensure that environmental considerations inform and are integrated into strategic decision-making in support of environmentally sound and sustainable development. In particular, the SEA process assists authorities responsible for plans and programs, as well as decision-makers. The main benefits of SEA consist in: providing high level of environmental protection, improvement of the quality of plan, program or policy making,...
Autori: Brindusa Robu, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25558

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 â€?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

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

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

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

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

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

Abstract A prehydrolyzed aluminium chloride (PAC), commercial product selected from a previously studied series, and the electrochemically obtained PAC (E-PAC) were tested as coagulants, comparatively with the classical aluminium sulfate (alum). A new method for producing E-PAC has been applied. The level of turbidity, the amount of total organic carbon, the UV-254 absorbance and the residual aluminium were evaluated, for determining the efficiency of the coagulation process in all situations...
Autori: Adina Pacala, Ilie Vlaicu, Ciprian Radovan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25569

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

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

Abstract Tourism and services are important components of any developed European society. The Northern-Eastern Region of Romania (NER), which comprises six counties with various problems, is lacking of good promotion and there are major gaps between the component counties. The failures of the communication and promotion system are caused by an insufficient development of the domestic network of tourist information offices within the towns and villages. The limited financial resources of the l...
Autori: Florin Alexandru Luca, Igor Creţescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25580

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

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

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

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

Abstract The present paper proposes an integrated-treatment process of leachate from a municipal landfill, which involves two treatment steps. The first step consists in diminishing the organic content through an advanced oxidation process using ozone and hydrogen peroxide. The second step is performed in order to diminish the content of heavy metals through a sorption process on a natural low-cost biosorbent, thus the traces of organic substances remained after oxidative degradation or oxida...
Autori: Carmen Paduraru, Corneliu Pohontu, Igor Creţescu, Lavinia Tofan, Marius Sebastian Secula, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25589

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

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

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

Abstract The aim of this study was to investigate the Congo Red (CR) sorption behavior onto six soils from Ia?…?¸i area, with different characteristics. The rate of sorption of Congo red dye molecules from aqueous solution by soil was studied in batch conditions. The rate of sorption was very rapid in the first 5-10 minutes and reached a maximum in 20 minutes. Kinetic modeling analysis of the pseudo-first-order, pseudo-second-order, intraparticle diffusion and Elovich equations reveals that t...
Autori: Camelia Smaranda, Dumitru Bulgariu, Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25594

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

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

Abstract The paper tackles the issue of ecological tourism in Romania?s North-East Region. This region offers some opportunities such as low costs for tourist operators and highly qualified local hosting personnel that can make it attractive. The concept of sustainable development is presented and its features are discussed in the context of tourism. Ecological education is presented as a collateral effect that naturally derives from developing a sustainable tourism, especially in Romania?s N...
Autori: Brindusa Robu, Carmen Cătălina Ioan, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25597

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

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

Abstract Using biomass in combustion, as a renewable source of energy, from ecological and economic considerations, sets special demands for control of the co-firing process. The paper aimed to study the problems like slugging, clogging and ash deposits formed on heat exchange surfaces during the co-firing process of agricultural biomass with coal. There are identifies the main factors that influence the formation of flying ash deposits and corrosion process. Most problems of co-firing proces...
Autori: Corina Rădulescu, Danut Vairenu, Elena Popa, Gheorghe Lazaroiu, Ionel Pisa, Lucian Mihăescu, Simona Zamfir, Tudor Prisecaru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25600

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

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

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

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

Abstract Decision trees and rule-based systems including variants based on propositional and fuzzy logic have been the method of choice for knowledge representation in many applications of environmental decision support systems. Reasons are the ease of use, the capability of representing uncertainty, and the fast computation of results at runtime when using decision trees, rule-based systems, or other similar means for knowledge representation. Unfortunately there are drawbacks related with t...
Autori: Franz Wotawa, Ignasi Rodriguez-Roda, Joaquim Comas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25614

Abstract This paper offers a hybrid approach, for the effective estimation of the maximum water supply and the special water flow in the watersheds of Thasos Island. This modeling effort was carried out by employing both artificial neural networks (ANNs) and kernel algorithms. Moreover support vector machines (SVMs) were used for the optimization of the ANNs. Support vector machines were applied to determine the loss of the developed ANN and to enhance its ability to generalize. As a matter o...
Autori: Lazaros S. Iliadis, Stavros Tachos, Stefanos I. Spartalis
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25615

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

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

Abstract The chlorine is the reagent of the widest application in disinfection processes of drinking water but it shows the short coming of reacting with the organic substances therein giving trihalomethanes with possible cancerous action. For this reason the tendency is noticed of replacing chlorine by reagents with higher disinfecting properties and lack of final toxic products. The chlorine dioxide could be used to this purpose. A comparative study on the effects obtained by treating the P...
Autori: Corneliu Oniscu, Dan George Popovici
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25620

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

Abstract This paper presents an integrated system of management and control for water resources, designated to improve the process of finding sustainable solutions for the problems of water pollution according to EU regulations. It is known that, regardless of the type of the source of pollution, punctual or diffuse, the water quality for both surface and underground waters can be severely damaged. Consequently, measures have to be taken in order to reduce/suppress the water pollution. In ord...
Autori: Aurelia Caldararu, Lucian P. Georgescu, Mirela Voiculescu, Virgil Olaru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25622

Abstract The aim of this study was to evaluate the capacity of certain bacterial and fungal strains - isolated from the dairy industry wastewater - to biodegrade the organic compounds such as casein, lactose and lactic acid similarly to those which determine the organic pollution. The strains able to rapidly biodegrade organic compounds were identified and screened for the inoculum preparation which is afterward tested for the aerobic biological treatment of the simulated dairy-processing was...
Autori: Gabriela Bahrim, George Ifrim, Marian Barbu, Mihaela Palela, Sergiu Caraman
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25625

Abstract The Jajrood River watershed is one of the main drinking water resources of Tehran, the capital city of Iran. In addition it provides many recreational usages. However, a variety of microbial pollutions is commonly perceived in the Jajrood River, among them a high concentration of coliform group bacteria that has caused strong concerns. In this article, different aspects of microbial pollution as well as the main microbial pollution sources in the region are discussed. Coliform group ...
Autori: Mahdi Jamshidi, Mahdi Maghrebi, Masoud Tajrishy
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25627

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

Abstract Mathematical models have become a valuable tool to study the anaerobic digestion process, to guide plant design and optimize operation strategies. Models require accurate and significant parameter values for being useful. Although the identification problem is an issue of concern, often is neglected. The described method for model calibration consists on the performance of simultaneous batch experiments (SBE), which requires simple and usually available equipment, and is based on the...
Autori: Belen Fernandez, Jordi Palatsi, Josep Illa, M. Angels Colomer, Xavier Flotats
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25636

Abstract The structural modification of external surface of NaY was investigated in order to enhance efficient biosorption systems consisting of a bacterial biofilm, Arthrobacter viscosus, supported on that zeolite, for removing hexavalent chromium from aqueous solutions. The supported bacterial biofilm reduces Cr(VI) to Cr(III) and this cation is then retained in the zeolite by ion exchange. NaY zeolite was modified by alkali-treatments using NaOH 2.0 M, with two different contact periods of...
Autori: Bruna Silva, Cristina Quintelas, Hugo Figueiredo, Isabel C. Neves, Manuel F.R. Pereira, Teresa Tavares
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25637

Abstract The aim of this work was the evaluation of the denitrification potential of a consortium of activated sludge adapted to anoxic conditions. As the carbon source is the main parameter influencing the denitrification process, in the first stage three carbon sources (acetate, citrate and glucose) were assayed in batch activity tests. The highest denitrification efficiency was ttained with acetate, being nitrate and nitrite completely reduced. The adapted sludge was then used as a potent...
Autori: Joana Azeredo, Pilar Teixeira, Rosario Oliveira, Zelia Fernandes
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25638

? 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

? 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

? 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

? 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

? 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

? 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

? 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

? 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. 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

? 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

? 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

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

As one of the very few countries using coal as its dominant energy resources, China has the coal production exceeding one thirds of in the world, added to it are the problems of environmental damages and soil resource destructions result from the solid waste, such as mining waste discharged in the process of coal production and fly ash deserted from the electric power plant etc. In this paper, the mineral ingredient of waste and fly ash was tested by X-ray Diffraction. Meanwhile, the deformation...
Autori: Yanli Huang, Jixiong Zhang, Qiang Zhang, Shoujiang Niehttp://www.ecozone.ro/reviste.php?RID=25677

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

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

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

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

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

An increasing recognition of tillage erosion processes has shown that soil redistribution by tillage directly contributes to soil loss in mechanically and nonmechanically agricultural areas worldwide. Soil translocation by tillage is normally measured by means of tracers, with which a volume of soil is labeled, and therefore yielding tillage erosion rates in a field. Two tracer methods for estimating tillage erosion rates were appraised to understand the adaptability to local conditions in the h...
Autori: Jianhui Zhang, Fucheng Lihttp://www.ecozone.ro/reviste.php?RID=25687

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

Hydrogen production via biomass steam gasification and partial oxidation is analyzed from exergy aspect. Based on cypress sawdust gasified from 800°C to 1200°C, the exergy value of H2 from steam gasification rises from 1410.80 kJ kg-1 to 7922.89 kJ kg-1, while that from partial oxidation increases from 988.30 kJ kg-1 to 3097.81 kJ kg-1. The exergy efficiency of H2 from biomass also increases for both steam gasification (6.42–36.08%) and partial oxidation (4.50–14.11%). However, the exergy ...
Autori: Yaning Zhang, Bingxi Li, Hongtao Li, Bo Zhang, Hui Liuhttp://www.ecozone.ro/reviste.php?RID=25693

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

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

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

In this study, the application of freeze-concentration method to treat low-concentration polluted water was demonstrated. The effects of stirring, the temperature in a freezing cabinet and the volume of water involved in the freeze-concentration treatment of pollutants were investigated under laboratory conditions. The removal of pollutant by freeze-concentration treatment was also attempted. Results had shown that the ratio of pollutants removed was about 83% when the experiment was carried out...
Autori: Yingjie Dai, Ying Zhang, Baiyin Liu, Masahiro Teduka, Yongbo Lin, Shunitz Tanakahttp://www.ecozone.ro/reviste.php?RID=25709

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

For a better evaluation of the impact of road traffic about air quality, this paper considers the development of a new evaluation index system and methods. They address the assessment of the air quality around the areas with an intense road traffic, according to Chinese standards considering sulfur dioxide index (SO2), total suspended particles index (TSP), floating dust index (PM10), nitrogen oxides index (NOX) and carbon monoxide index (CO). A systematic air quality evaluation model was establ...
Autori: Zhao-hui Liu, Zhi-bin Qinhttp://www.ecozone.ro/reviste.php?RID=25714

Semi-dry FGD with fabric filter has been extensively studied in recent years. After a series of industrial tests on 300MW boiler with semi-dry FGD and fabric filter, some operation notes were obtained. The test results show that CFB-FGD with fabric filter can be run longer and stable, and its actual performance is even higher than the design parameters. Moreover, the pressure drop of fabric filter after CFB-FGD is 600~800Pa (higher than normal). The fabric filter, which contributes to the desulf...
Autori: Tong Li, Han Yi, Han Xu, Reti Hai, Wang Wenxinghttp://www.ecozone.ro/reviste.php?RID=25716

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

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

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

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

Abstract:This work concerns studies related to strategic development of products in which bio-based plastics are or will be applied, referredto as bio-based products. The studies cover (1) current and potential benefits of bio-based products in extended value chainsincluding activities after end-of-life of products, (2) value communication between stakeholders in extended value chains, and (3)creating an integrated development approach for optimized bio-based products. Most existing models for v...
Autori: J.W. Lin, Jarmila Kopecká, Kim Ragaert, Ludwig Cardon, Maarten De Groote, Rolf Koster
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25728

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

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

Abstract:In this paper the study on the possibilities of converting chopped reed stalk biomass into briquettes is described, in the conditions of harvesting water reed plant from Danube Delta region in winter time and based on briquetting technology used for wood waste from production. The water reed tested in the research has been harvested from Tulcea reed bed, one of the largest in Romania, chopped in a veneer drum chipper and compacted into the hydraulic briquette machine. The paper focuses ...
Autori: Aurel Lunguleasa, Camelia Coşereanu, Constantin - Radu Gheorghiu, Dumitru Lica, Gavril Budău
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25734

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

Abstract:In this paper, the influence of two types of imidazolium-based ionic liquids (ILs) on the properties of sycamore maple (Acer pseudoplatanus) veneers, at 25 0C, 60 0C and 80 0C has been studied by using contact angle measurements and Fourier transform infrared spectroscopy analysis. The measurements showed that wood wettabillity is increased by IL treatment. It has been determined that the ILs decrease the crystallinity and improve the flexibility of the cellulose matrix. Also, it has be...
Autori: Attila Porzsolt, Catalin Croitoru, Christian Friedrich, Silvia Patachia
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25737

Abstract:Incineration plants are used since the beginning of the twentieth century to transform the mixed municipal waste into thermalenergy and to convert the hazardous components of waste into harmless compounds. To minimize the environmental pollutionand maximize the energy efficiency of the produced energy, the control of the complex processes that occur into the waste toenergy conversion is of major importance. In this work, the system identification approach is used to determine the dynami...
Autori: Adrian Danila
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25739

Abstract:A comparative analysis is drawn on the energetic responses numerically simulated for Brasov, Romania location, delivered bytwo mono-axial pseudo-equatorial STCs (solar thermal collectors): a flat plate STC and a STC with heat pipes; the two systemsare destined for future implementation on Transilvania University Campus. Accordingly, two tracking programs are consideredfor the diurnal motion: a) of 1h constant duration steps, for school courses interval (September-June) and b) 1-step pro...
Autori: Maria M. Vatasescu, Veronica E. Dombi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25740

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

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

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

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

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

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

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

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

Abstract:Hydropower exploitation has become a multifaceted task due to continuously increasing interest in all parts of the world but alsodue to inhomogeneity of framework conditions in the social, the political, the regulatory and the economic view. The final successof a plant is not only ensured by a good technical concept or design but additionally by a suitably model of financing, by selectingthe most reliable partners, by evaluating the environmental restrictions or the political stability ...
Autori: Bernhard Pelikan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25761

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

Abstract:A thermodynamic model for accurately predicting the overall efficiency and power output of a solar assembly using a Stirlingengine is presented. It is based on the application of the First Law of Thermodynamics for Processes with Finite Speed and usesthe Direct Method. The proposed model could also be used to better design receivers that concentrate the solar radiation and toproperly size the receiver cavity for a dish solar concentrator. Examples of the optimization of the performance ...
Autori: Alexandru Dobrovicescu, Camelia Stanciu, Dorin Stanciu, Georgiana Tirca-Dragomirescu, Monica Costea, Stoian Petrescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25763

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

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

Abstract:In Romania, the small hydro power scheme (mini-, micro- and pico- hydro power) represents a potential renewable energy sourcefor electrical energy. Nevertheless, this small hydro potential must be used efficiently. The paper proposes an innovative e-methodof integrating design with manufacturing, for a small Pelton turbine. The first part presents the application of Rapid ProductDevelopment (RPD) with focus on Product Design (PD) of a new, very small customized hydropower turbine. This ...
Autori: Anisor Nedelcu, Bogdan Deaky, Razvan Udroiu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25769

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

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

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 Âľm 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

Abnstract:In recent years, solar receivers have been employed in several applications where high temperature fluids are involved, such aspower plants and solar thermal reactor. The possible presence of high temperature gradients could determine reduced receiverefficiency and a short life of the material. Thermal and fluid dynamic analysis of the receiver allows to highlight possible presenceof temperature gradients and to evaluate their values and the more critical zone of the material. Compress...
Autori: Alina Adriana Minea, Oronzio Manca, Salvatore Tamburrino, Sergio Nardini
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25779

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

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

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

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

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

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

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

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

Abstract:Titanium metal and its alloys have been widely used as implants under load-bearing conditions due to their biocompatibility, excellent corrosion resistance and lightness, but their inability to bond to living bone is a setback. The experiments outlined here investigated hydroxyapatite (HA) coating on Ti metal implants, used to enhance their bioactive properties. In this study, specimens of commercially pure titanium (c.p. Ti) and Ti-6Al-4V were etched in either H3PO4 or HCl, and subsequ...
Autori: Chao-Lun Fu, Hsueh-Chuan Hsu, Shih-Ching Wu, Shih-Kuang Hsu, Wen-Fu Ho
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25795

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

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

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

Abstract:The implementation of the EU Bird and Habitat Directives by the ports and dredging industry caused severe project disruptions across North-West Europe in the past. The prevalence of negative experience triggered a new approach, which aims to integrate site-specific ecosystem characteristics and project objectives during the development of the initial project design. This approach is termed "Building with Nature". The authorities and practitioners hope that the new approach will improve ...
Autori: Hans Bressers, Kris Lulofs, Vera Vikolainen
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25801

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

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

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

Abstract:Drinking water produced in water treatment plants almost invariably fulfils the water quality requirements set, for example by the European Union Drinking Water Directive 98/83/EC (EU DWD) and national legislation. However, EU DWD requires that water quality should also meet the requirements at the consumers’ tap. The quality of drinking water changes due to the transportation through the distribution networks and the time spent in the reservoirs until the last point of consumption. W...
Autori: , Ioana Gabriela Dascalescu, Maria Cohl
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25814

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-Ońa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25818

Abstract:Energy Efficiency is a topical concept managed by a wide variety of individuals and institutions from very different areas, bothacademic and professional. Economists, Engineers, Environmentalists, Lawyers and other specialists show, each one of them, anspecific dimension of this so relevant concept, not only for its implications on global evolution of Earth but for its impact onbenefit functions of enterprises.What this paper proposes is to shape a theoretical framework in which, firstl...
Autori: Jesus Rivas, Marta Magadán
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25819

Agrotourism, a form of tourism that falls within the framework of rural tourism, is based on the tourism taking place on farms with the possibility of doing work with the owners of the farm with this being seen as a leisure activity, educational in nature and of interest to members of many groups. The importance of this kind of tourism resides in the possibility of complementing the income generated from the farm with income produced by the tourism, as well as assuring the conservation of the en...
Autori: Ana-María Campón-Cerro, Antonio Pérez-Díaz, Felipe Leco-Berrocal, José-Manuel Hernández-Mogollón
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25828

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

Soil hydraulic characteristics are variable, being influenced by climate changes. Research conducted until now in this area has been based on field soil sampling; their laboratory analysis using experimental techniques; and the use of models and programs for data processing and interpretation. The present research is based on the idea of incorporating smart sensors on site, each one having its own network address, accessible for any location. They can be programmed to send an alarm signal when t...
Autori: Constantin Victor Stătescu, Dorin Cotiusca Zauca, Florian Stătescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25831

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

� 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

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

The aim of this work is the study of activated sludge floc samples stained with different dyes and imaged by Confocal Laser Scanning Microscopy (CLSM). Activated sludge flocs were stained for lipids, sugars and esterase enzyme producing bacteria. Images were acquired for different samples to analyze the structural characteristics of the bioaggregates. The analysis of the CLSM images allowed for the localization and estimation of the quantity of different build-up materials. The 3-D reconstructio...
Autori: Bela Abraham, Botond Raduly, Dan Niculae Robescu, Szabolcs Lanyi, Szabolcs Szilveszter, Szilard Bucs
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25937

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

The International Conference on Environmental Engineering and Management, ICEEM 2011, at its 6th Edition, represents a scientific event that is dedicated to the promotion and dissemination of the scientific results obtained at national and international level in the fields of environmental engineering, environmental management and sustainability. The event was initiated and organized every 2 years, since 2002, by the Department of Environmental Engineering and Management, Faculty of Chemical Eng...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25846

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 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

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

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 mgL-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

Pollutants transfer via the food chain was investigated in a wetland ecosystem from the Lower Prut Floodplain Natural Park in Romania. Trace elements (Cd, Cu, Pb and Zn) were determined by Inductively Coupled Plasma – Optical Emission Spectrometry (ICP-OES) from samples belonging to primary producers and primary and secondary consumers, and also from water and sediments samples. Non-essential trace elements as Cd and Pb exhibited low concentrations in molluscs and fish, but zinc had shown conc...
Autori: Alin Tudorache, Gabriel Chisamera, Gabriel Lucian Radu, Iulia Gabriela David, Laurentiu Rozylowicz, Marius Lucian Matache
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25855

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

This paper is part of LCA studies performed in the frame of FP7 project �Recovered Paper Sorting by Innovative Technologies - SORT IT�. 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

The aquatic species are permanently subjected to various stresses through the ecosystem and the food habit. Elucidating the impact at the cellular level allows us to understand the ways in which the polluting elements and their derivatives can disrupt the metabolism of aquatic organisms triggering apoptosis in individual cells or necrosis affecting groups of neighbouring cells. The aim of this preliminary study is to highlight the influence of the environmental factors on two fish population by ...
Autori: , Camelia Ureche, Dorel Ureche, Gabriel Lazar, Ileana Denisa Nistor, Irina Loredana Ifrim, Iuliana Mihaela Lazar, Marius Stamate, Valentin Nedeff
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25861

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

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

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

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

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

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

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

The metal sensitivity and selectivity of two fluorescent proteins was investigated. The studied proteins are mutant forms of the red fluorescent protein (DsRed); according to our results, both proteins showed sensitivity to the presence of copper[II] and nickel ions. The fluorescence intensity of the proteins has decreased significantly in the presence of copper ions in the micromolar range. Metal binding by these proteins is a reversible process, as addition of a chelating agent liberates the b...
Autori: Beata Abraham, Ildiko Miklossy, Judit Petres, Laszlo Szilagyi, Maria Szabo (Palfi), Szabolcs Lanyi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25870

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

The indoor climate of educational institutions (kindergartens, secondary schools and universities) in Estonia is investigated. The main hazards for students’ health are: the high concentration (over 800 ppm) of carbon dioxide in the classrooms that refers to the inappropriate ventilation; the non-ergonomic computer workplaces where the direction of the natural light (without blinds for the windows) is causing glare on the monitors; the low humidity of the air in winter; the low air temperature...
Autori: Ada Traumann, Piia Tint, Viiu Tuulik
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25873

This manuscript pointed out an error on pseudo-second-order rate equation. The mistake in the model was duplicated in number of papers in recent years. This type of error could be avoided if authors have had paid more attentions to details about the model from the original paper. In addition, it may leads to trouble for the reader to locate the original articles. It is very provoking and time-consuming to search for a reference when the information is not correct. This comment offered informatio...
Autori: Yuh-Shan Ho
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25876

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

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

This research investigates the influence of certain vitamins (A and D2) on the possibility of hydroxyapatite formation on polymer surfaces. A coating method based on biomimetic techniques was used to form a crystalline hydroxyapatite thin layer on porous polyurethane matrix. The method is based on a wet process of hydroxyapatite formation that involves porous polyurethane film soaking in a modified synthetic Simulated Body Fluid (SBF) solution. This modified SBF solution contains vitamin A and v...
Autori: Alina Costina Luca, Constantin Luca, Gabriela Ciobanu, Simona Ilisei
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25884

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

The paper proposes a method and a technology that allows the generation of a very high intensity magnetic field, at a high pressure and within an extremely short period of time into a ferrous material, in order to study the behavior of such material from the magnetic and structural perspective. The method consists in producing the �compression� of an initial magnetic flux that is generated in a coil that has inside a ferrous material cylinder (the armature), subject to testing, done by a con...
Autori: Nicolae Badara, Octavian Tarabuta, Vasile Dobref
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25887

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

Quantification of the floristic matrix is important both for animal’s nutrition and for the biodiversity monitoring of plants species under the influences of substance flow. Our researches have the main aim to study the possibilities offered by Infrared Spectroscopy in rapid, unpolluted and non-destructive analysis of floristic matrix modification from perennial grassland fertilized with organic and/or mineral fertilizers. It was performed three different FTIR models: for Poaceae (R2=0.949; RM...
Autori: Iosif Gergen, Moisuc Alexandru, Monica Harmanescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25892

The concept of collaborative management is considered to be one of the most efficient instruments for sustainable development of some areas, which are under anthropic pressure due to the production of solid waste. The paper stands for the necessity of promoting a collaborative management among the main actors involved in an efficient and sustainable urban solid waste management, in the metropolitan area of Bucharest. The present management is mainly based on the strictly economic vision of manag...
Autori: Andrei Schvab, Daniela Zamfir, Gabriel Pascariu, Ioan Ianoş, Loreta Cercleux, Valentina Stoica
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25893

Wireless local area networks (WLAN) are an increasingly used communication technology employing energy of radiofrequency (RF). Although the power emitted by WLAN systems is relatively small (in Europe, a maximum of 100 mW is permitted in the classic 2.4 GHz frequency band), concerns about possible health effects risks from exposure to radiofrequency (RF) fields originating on WLAN are sometimes expressed by the general public. In such a context, this paper presents results of a survey conducted ...
Autori: Alexandra Salceanu, Eduard Lunca, Igor Creţescu, Valeriu David
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25896

The approached subject presents some features of a methodology for original research, considering the environmental performance as a component of the organizations management performance quantification, by considering the environmental management approach as an integrated environmental informational and decisional concept. The current trend in the assessment of performance management is the integration of the environmental management in the organizations management in a conscious and regulated w...
Autori: Mihaela Luminita Lupu, Nicolae Trofin, Orest Trofin
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25897

Five new aryloxyalkylcarboxylic acid derivatives (diazoaminoderivatives) are studied for their thermal behavior by applying a coupled TG-FTIR technique over the (30-400 oC) range in correlation with the environmental impact of gaseous species resulting by thermal degradation. These compounds are of a particular practical significance since they show a high biological potential as agrochemicals, such as pesticides (herbicides, acaricides, fungicides, growing stimulators etc.). This is why the pap...
Autori: Anca Mihaela Mocanu, Carmen Zaharia, Constantin Iordache, Constantin Luca, Lucia Odochian
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25899

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

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

Abstract A one-stage aerobic moving bed biofilm reactor (MBBR) (Reactor A) and a combined reactor (Reactor B) involving an anoxicgravel-bed biofilm reactor (GBBR) and an aerobic MBBR were applied to the treatment of heavily polluted river water. Reactorperformance was investigated throughout the experiment for almost 200 days and molecular techniques including PCR-DGGE,FISH/CLSM and FISH/FCM were used to reveal the evolutions of bacteria community, abundance of nitrifying bacteria and their...
Autori: Linyun Gu, Xiangchun Quan, Yin Qian, Yuansheng Pei, Zhifeng Yang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25942

Abstract Oil contamination has been one of the most common environmental pollution due to its threat to both human health andecosystems. It is difficult for the application of conventional chemical analysis to detect oil contamination in-situ, estimatebioavailability and rapidly assess the environmental risk. In this study, two bioreporters were employed for the rapid and directdetection of oil content and genotoxicity in a cutting oil contaminated site in China. Acinetobacter baylyi ADPWH_...
Autori: Bo Jiang, Chuan Li, Dayi Zhang, Guanghe Li, Wei E. Huang, Yizhi Song
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25944

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

AbstractIn this study, a novel excess activated sludge (EAS) based nitrification and denitrification process was developed using EAS toprovide nitrifiers and denitrifers for nitrogen removal from the reject water of a municipal wastewater treatment plant (MWWTP).This can achieve a significant reduction in the nitrogen (N) loading in wastewater treatment plants. The results show that theammoniacal-nitrogen (NH4+-N) and total nitrogen (TN) removal efficiencies were in the range from 74.7% to 93.1%...
Autori: Wei Li, Xiaoxia Yang, Xinchao Guo, Yongzhe Yang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25946

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

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

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

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

AbstractThe detection of environmental pollutants has challenged conventional chemical analysis for the rapid estimation of thebioavailability and toxicity of the contamination impact on human health and ecosystems. Magnetic nanoparticles (MNPs)functionalization as bioreporters can enhance the ability for biosensing in complex contaminated samples such as soils, and theimmobilization of bioreporters will promote the detection of gas and online monitoring. In this study, Acinetobacter baylyi ADP1...
Autori: Aizhong Ding, Cheng Chen, Dayi Zhang, Musen Duan, Steven F. Thornton, Wei E. Huang, Yanjun Luo
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25952

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

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 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

AbstractDue to rapid growth in both population and economic development in China, water demand is increasing dramatically andChina is facing more and more severe water scarcity problems. Thus competitions for water (between uses, users and regions) areincreasing which make water use efficiency an important issue in China, together with the uneven spatial and temporaldistribution of water, all of which drive the Chinese government and water planners to find the optimal water resource allocationpl...
Autori: Adrian T. McDonald, Linda See, Martin Clarke, Yanan Jiang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25961

AbstractA rapid increase of wastewater treatment plants (WWTPs) has made the disposal of excess sludge from WWTPs a seriousproblem. In order to enhance the management of sludge, both development of sludge reduction technologies and sludgeevaluation system are of great importance. Based on the survey data from 696 plants in China in 2009, an empirical model wasdeveloped to simulate the production and discharge of excess sludge, which considered influent, temperature, Chemical OxygenDemand (COD), ...
Autori: Chengwen Wang, Tao Xie
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25963

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

A fast economic development in China over thelast three decades has lifted hundreds of millions ofpeople out of poverty. However, an annual GDPincrease of over 10% due to the large scale industrialactivities and fast urbanization has released substantialamounts of pollutants into the environment and exertedtremendous pressure on local ecosystems. Although alarge amount of investment has been made by theChinese government and a series of efforts have beenmade by the environmental regulators, scie...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25965

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

“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

AbstractWastewater streams and particularly industrial effluents tend to increase in volumes and to get more complex in terms ofpollution. Nevertheless, nowadays the focus is directed towards recycling or reuse of treated wastewater so as to close the wateruse loop. Advanced wastewater treatment allows these possible applications by achieving good quality effluent to suit the newpurposes, but the implementation of this treatment stage is a difficult task. This study gives an example on how to ap...
Autori: , Daniela Cailean, Florina Ungureanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25971

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

AbstractThe preliminary assessment of a cost-effective flow-sheet for the production of biodiesel from microalgae lipid fraction wascarried out. The study was based on approximated cost-estimation methods integrated with the simulation software Aspen PlusŽ.Several scenarios were investigated to compare costs regarding the main steps of the biodiesel production process. Ranges ofinput variables from downstream literature and experimental data were used to simulate the sections that define concret...
Autori: Antonio Marzocchella, Giuseppe Olivieri, Piero Salatino, Teresa Guida
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25973

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

AbstractSince contemporary economical development trends are not sustainable, and given the fact that public involvement, educationand training are key to a society that aims toward sustainability, it is obvious that the role of education is to trigger and developchanges in the individual’s values system, behavioral patterns, skills, and attitudes. Providing benchmarks in establishing ageneral framework on education for sustainable development represents a key feature, thus making it possible to...
Autori: Carmen Cătălina Ioan, Maria Ileana Carcea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25979

AbstractEfficient large-scale recycling of polymeric wastes for automotives is of increased interest from ecologic and economic point ofview and represents an important goal for the car recycling industry. One alternative is to develop novel composite materials,relying on waste car parts, for indoor or outdoor large-scale applications, without using small molecular plasticizer or otheradditives but insuring a good compatibility for large percentages of thermoset plastics in the composite. Previo...
Autori: Anca Duta, Cristina Cazan, Dana Perniu, Mihaela Cosnita
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25982

AbstractThis study presents the development and use of a hydraulic-coupled water quality model for the simulation of BiochemicalOxygen Demand (BOD) concentrations in the Bahlui River, a small river located in northeastern Romania. This river experiencesthe typical pollution problems for many Romanian water bodies: heavy pollution from both diffuse and point sources, lowconnectivity to wastewater systems in rural areas and moderate removal of pollutants in municipal wastewater treatment plants.Th...
Autori: , Claudia Cojocariu, Denie C.M. Augustijn, George Bârjoveanu, Ioan Crăciun
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25985

AbstractThe waste management is increasingly important from the point of view of our future and to keep our environment safe for thefuture generations to come. The European Union sets up strategic objectives and goals on priorities and actions in the field ofwaste management. The Waste Framework Directive 2008/98/EC stipulates and sets forth the goals and actions for the nextdecades. The paper deals with the European strategy and the Hungarian practices with special focus on the North-Balatoncom...
Autori: Ákos Rédey, Attila Sarkady, László Dióssy, Róbert Kurdi, Tatiana Yuzhakova
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25986

AbstractThe paper presents and discusses some aspects concerning the development of an expert system designed for surface watermonitoring in the context of sustainable management of water resources in Romania and neighboring countries. Technicalconsiderations, which are worthy to be included in the analysis of such kind of systems, are addressed: the system structure(number, type and location of hydrometric stations), number and type of measured indicators, transducers and sensors used formeasur...
Autori: Anatolie Iavorschi, B. S. Nanda Kumar, Victor Sontea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25988

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

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

AbstractThe use of planar electromagnetic technology led to the improvement of high frequency characteristics of the structures and thedecrease of their size and profile, which made them easier to integrate in different devices. In order to improve these planarstructures, it is known that the parasitic capacitance (EPC) must be decreased. Another method to achieve a better functionality isto increase or decrease the high frequency losses, according to their use. Because the previous studies were...
Autori: Adina Racasan, Calin Munteanu, Claudia Hebedean, Claudia Pacurar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25996

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

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

AbstractThis paper describes an integrated system of wireless temporary pacemakers for remote monitoring of patients suffering fromcardiac arrhythmias, especially atrial fibrillation. The system is built around a low power cardiac pacemaker with wireless datatransmission capability, used for patient monitoring into a limited area. The proposed system is designed to be used in emergencysituations, in healthcare institutes, helping to keep the patient’s heartbeat stable. Each wireless pacemaker at...
Autori: Cristian Rotariu, Hariton Costin
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26004

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

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

AbstractA case-control study was conducted in two Romanian counties (Alba and Cluj) in order to investigate lung cancer risk due toresidential radon exposure. Two hundred and forty-one subjects were included, of which 104 cases and 137 controls. Residentialradon concentrations were monitored using CR-39 track detectors, exposed over a period of at least 6 months. The odds ratioswere estimated by using multivariable logistic regression adjusted for age, sex, smoking status, education and family h...
Autori: Alexandra Cucoş Dinu, Constantin Cosma, Dan Rădulescu, Doina Todea, Dorin Iancu, Ionel Papuc, Loredana Roşca, Mircea Rişteiu, Tiberius Dicu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26011

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

• 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

The first edition of the International Conference„ECOIMPULS 2012- Environmental Research andTechnology” plans to open a conference seriesdedicated exclusively environmental issues. Thescientific topics are devoted to the on-going research onenvironmental topics regarding: „Environment – apolitical, economic and social responsibility”,„Water in a changing world”, „ZERO – waste cities”and „ Energy – beyond the conventional”.This scientific event aims to bring togetherprofessionals, academics, scie...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26015

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

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

AbstractThe developing of the infrastructure for wastewater collection and treatment in Romania is leading more and more to theproduction of huge quantities of activated sludge, as direct result of the application of state of wastewater treatment. The rapidand rational development of a national policy for management of activated on short, medium and long term has emerged as anecessity, and must be implemented urgently.The EU 27 countries consider environmental management of activated sludge as a...
Autori: Ilie Vlaicu, Ioan Neamt, Ioana Ionel, Mihail Reinhold Wächter
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26019

AbstractWaste management includes all activities of collection, transport, treatment, recovery and disposal of waste, includingsupervising of such operations. The framework law that regulates waste management activities in Romania is Law no. 27/2007,approving Government Emergency Ordinance no. 61/2006, amending and supplementing Government Emergency Ordinance no.78/2000 on waste regime. This legislation sets the responsibilities for waste management from generation to disposal, thepriorities in ...
Autori: Constantin Mircea Orlescu, Ioana Alina Costescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26020

AbstractIn this paper the synthesis, characterization and testing of composite material based on multi-wall carbon nanotubes and silverdopednatural zeolite (MWCNT-ZAg) has been investigated for humic acid (HA) adsorption. The surface characterization of thecomposite material has been investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM/ EDX) analysis.The Langmuir and Dubinin-Radushkevich (D-R) models fitted the best experimental data informing that adsorption process ofH...
Autori: Aniela Pop, Corina Orha, Florica Manea, Virgil Tiponut
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26023

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

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

AbstractThe paper presents the research made on the FP7 project „Magnetic Sorting and Ultrasound Sensor Technologies for Productionof High Purity Secondary Polyolefins from Waste” in order to develop a magnetic fluid equipment for sorting of polypropylene(PP) and polyethylene (PE) from polymers mixed waste streams. Because both PP and PE float in water, it is difficult to separateone from the other. The paper presents the principles of inverse magnetic density separation process and the results ...
Autori: Bin Hu, Francesco Di Maio, Guillaume Houzeaux, Liana Baltes, Mircea Tierean, Peter Rem
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26028

AbstractThe performance of two cation exchanger resins, Amberjet UP1400 and Amberlite IR120 in the process of Cs(I) ions removalfrom aqueous solutions was examined. Batch experiments were carried out to determine the influence of several parameters(resin dosage, contact time, temperature and initial concentration of Cs(I) ions) on the removal process. The equilibrium wasreached after 60 min for Amberlite IR120 and after 120 min for Amberjet UP1400, with an overall adsorption performance of~97% f...
Autori: Adina Negrea, Cornelia Muntean, Corneliu Mircea Davidescu, , Mihaela Ciopec, Petru Negrea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26032

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

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

AbstractIodine is essential for the synthesis of thyroid hormones which are extremely important in the process of growth and developmentof human body. The effects of iodine deficiency implies thyroid enlargement (goiter) and others disturbances so called iodinedeficiency disorders (IDD). The iodine deficiency is an ancient but still existing problem with medical and environmentalconnotation. Soil and water from various regions worldwide are iodine deficient. This problem is aggravated by defores...
Autori: Carmen Vulpoi, Cristina Cristea, Cristina Preda, Letitia Leustean, Maria Christina Ungureanu, Maria Gavrilescu, Voichita Mogos
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26038

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

AbstractZinc is an important metal for humans and the environment. Its intensive application in industry has led to water and soilcontamination. A lot of microorganisms both unicellular and multicellular can be applied for removal of metals from theenvironment. The process of zinc adsorption by cyanobacteria Spirulina platensis biomass was investigated. The concentrationsof 0.34 mM and 3.4 mM of ZnSO4ˇ7H2O were used. The process of biosorption of zinc was studied during 1-hour experiment.To dete...
Autori: Gheorghe Duca, Inga Zinicovscaia, Liliana Cepoi, Marina V. Frontasyeva, Sergey S. Pavlov, Svetlana F. Gundorina, Tatiana Chiriac, Valeriu Rudic
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26041

AbstractThis paper presents research into conceptualisation, design and implementation of an innovative web-based virtual environmentfor flood information sharing and dissemination. A system intended to be used by flood management authorities and potentiallyaffectedcitizens is demonstrated. Latest technological advances for collection, archiving and sharing of environmental data usingweb-based Spatial Data Infrastructure (SDI) are used for system implementation. Flood-related data and models are...
Autori: Adrian Almoradie, Andreja Jonoski, Dimitri Solomatine, Florin Stoica, Ioana Popescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26045

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

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

AbstractActing on the recommendations of the Commissioner for Education, Culture, Multilingualism and Youth - Androulla Vassiliou,EU politicians agreed, at the European Council in Brussels - 2010, that education and training are vital for development and thesuccess of society and the current knowledge-based economy. Educational partnerships among all stakeholders engaged ineducation are increasingly important, while teachers and all the professionals involved in training young people must suppor...
Autori: Carmen Olguţa Brezuleanu, ,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26052

AbstractGranular sludge technology – NEREDA is one of the most significant achievements in environmental biotechnology of the XXIstcentury. NEREDA is the latest innovative technology for biological wastewater treatment, which purifies water using the uniquecharacteristics of aerobic granular biomass. Unlike conventional processes, bacteria of the biological process naturally focus incompact granules with good settling properties.Due to the variety of biological processes that occur simultaneousl...
Autori: Ilinca Dinu, Ioan Crăciun, Teodora-Manuela Cornea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26053