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

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

A number of corporate management tools have been developed during the last decades. This has given the impression that industry is in the lead for developing a more environmentally sound and sustainability-adopted future as concerns the production and the products they are working responsible from. This paper includes a short review of some key tools, including cleaner production assessments, life cycle assessments, environmental management systems, environmental management accounting and variou...
Autori: Thomas Lindhqvist
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25148

AbstractMalaysia is a country that has recorded a phenomenal economic development success story. One of the most important problems is solid waste due to inadequate management practices. This resulted in an increase in the amount of waste generated. The national average in at 0.5-0.8 kg/person/day, but in the cities the figures have escalated to 1.7 kg/person/day. This paper addresses the current practice of solid waste management and its disposal in Malaysia. Currently, the waste management app...
Autori: Abdelnaser Omran, Abdullah Mahmood,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25140

This study presents an evaluation of the catalytic performances of Fe containing clay-based catalysts for the wet hydrogen peroxide catalytic oxidation (WHPCO) of 4-chlorophenol (4-CP) aqueous wastes. The catalysts were prepared by well-established techniques, their properties being determined by DRX, BET and chemical analysis techniques. All the tests were performed on a laboratory scale set-up. The ion-exchanged clays were the most active catalysts (100 % 4-CP and 84 % COD removal for Fe-Mt) b...
Autori: , Cezar Catrinescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25157

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

AbstractThe paper analyzes some aspects of waste management in Romania and, in particular, in Iasi County, in view of the European perspective. Urban and rural waste management is considered and collection, transport, processing, recycling or disposal of waste materials is discussed relative to the National Waste Management Strategy and the National Plan for Waste Management, as well as European and national legislative framework.It was showed that land disposal will continue to be a disposal op...
Autori: Ana-Maria Schiopu, Ion Apostol, Maria Gavrilescu, Monica Hodoreanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25203

Experiments in a Pilot Plant (PP) are extremely important and relevant for the substantiation of research. This is the way to set up the most suitable coagulation-flocculation reagents, optimum operating conditions (injection point, reaction times, etc.),compatibility with the processes at the actual Water Works and real possibilities for further improvement.The present work aimed at verifying the previously obtained results in laboratory under PP working conditions for optimizing the coagulatio...
Autori: Adina Pacala, Alina Anghelina, Dalila Marşavina, Ilie Vlaicu, Katalin Bodor, Mihaela Anghel
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25156

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

Contain all the articles from this issue Risk assessment and management - tools for sustainable developmentMaria GavrilescuSustainable alternatives for petrochemical wastewater managementCarmen Teodosiu, Lidy E. Fratila-ApachiteiThe role and the place of oxidant reagents in wastewater treatmentIoan RoscaEnvironmental Psychology, a new direction in the psychological fieldCarmen Catalina IoanChanging concepts of high performance to socially sustainable organizationCostache Rusu, Nerida DavisU...
Autori: Abdelnaser Omran
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25166

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 issueBiosorption of Cu2+ ions from aqueous solution by Enteromorpha sp.Loredana Brinza, Matthew Dring, Maria Gavrilescu  Environmental impact assessment for steel processingBrindusa Robu, Carmen Zaharia, Matei MacoveanuEnhanced primary treatment of municipal wastewater by ion exchange and membrane processesDaniela Teleman, Peter A. Wilderer, Carmen Teodosiu, Thilo K?śtzle Best practices in kraft pulping - benefits and costs Dan GavrilescuAspects of waste m...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25177

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

AbstractThe perovskite structure was synthesized by sol-gel method type citrate. Three perovskite LaMnO3 samples were obtained after calcination and were characterized by XRD, XPS and TPR. The catalytic testing was carried out in SCR-HC equipment (HC=C3H6 and C3H6 respectively) in presence and also in absence of oxygen atmosphere. The results pointed out a good activity in NOx reduction but only in oxygen absence. As it was expecting, LaMnO3 perovskite has shown a good activity for hydrocarbons ...
Autori: Helmut Papp, Ion Balasanian, Liliana-Mihaela Chirilă, Wladimir Suprun
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25222

AbstractLaboratory scale experiments were conducted in order to investigate the photolysis of Reactive Blue 19 (RB 19) dye using UV as the irradiation source in alkaline solution. The effects of operating parameters such as, pH, initial dye concentration, UV dosage, hydrogen peroxide and oxygen have been evaluated. The results indicate that the UV photolysis process in alkaline solution is ideal for decolorizing of RB 19 and it can be taken as a starting step to establish the economical feasibil...
Autori: Abbas Rezaee, Ebrahim Hajizadeh, Gholamreza Mosavi, Mohamadtaghi Ghaneian, Seyyed Jamalodin Hashemian
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25245

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

AbstractHollow fiber polyacrylonitrile membranes with three different MWCOs (i.e. 6, 13, 50 kDa) have been tested for dead-end ultrafiltration of a combined refinery and petrochemical secondary effluent. The effluent treatment envisaged further recycling as cooling water make-up following an ultrafiltration/reverse osmosis advanced treatment scheme. Criteria for ultrafiltration evaluation included flux restoration by backwashing, turbidity removal efficiency and water recovery. The membranes cou...
Autori: , Lidy E. Fratila-Apachitei
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25258

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

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

AbstractThis paper presents the connection between the heavy metals concentration in soil and their bioaccumulation in lettuce. Lettuce is a very good bioaccumulator of heavy metals and nutrients. In general, plants manifest a certain reaction to increasing the toxic metal concentrations in soil which they are cultivated on. The differences depend on plants sensitivity, and time exposure intensity (concentration of heavy metals, cultivation length, etc.), presence or absence of nutrients and oth...
Autori: Ana-Irina Smical, Elena Pop, Jozsef Juhasz, Vasile Hotea, Vasile Oros
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25299

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

AbstractAt the beginning of 3rd century the humankind finds at a crossroads. Daily, people assist at miracles, live in a time of change, both in economical and rational areas. Energy demand is expected to increase steadily over the next couple of decades, as income levels and economic output expand, especially in the new democratic states after ’90th.Renewable energy resources represent a new opportunity in Romania, with less participation in the market than those forums outside of the country...
Autori: Camelia Ciubota-Rosie, Maria Gavrilescu, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25305

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

AbstractOn the top of the ecological priority list in Romania, waste management is on the third place following the problems regarding the surface and underground water pollution, as well as that of the atmosphere. The clean-up of the landscape represents an issue largely discussed in Romania. The paper presents the advantages of waste management for the landscape, which includes: waste gathering and transfer, waste selection, waste biological treatment and the storage.Some analyses of the const...
Autori: Camelia Capatana, Claudia Maria Simonescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25331

AbstractIn this paper the results of surface water treatment process for drinking purpose are presented, using the microfiltrationultrafiltration process. The experimental studies were carried out using a microfiltration-ultrafiltration pilot plant and raw water from Bega River, Timisoara as feed. To assess process performance, the water quality, e.g., turbidity, total coliforms and hardness parameters were determined for two different operating regimes subjected to filtration time. A good effic...
Autori: Camelia Podaru, Cristian Danielescu, Florica Manea, Georgeta Burtica, Ilie Vlaicu, Viorel Patroescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25332

AbstractSolid waste management problems proved to be complex in origin and in solution. The rapid economic development and population growth experienced by the State of Penang, Malaysia have resulted in a tremendous increase in the quantities and types of solid wastes generated. Domestic solid waste is the most visible consequence of this economic development. However, considerable amounts of this waste could be recycled and reutilized if separated. This paper reviews the current status of solid...
Autori: Abdelnaser Omran, Abdelsalam O. El-Amrouni, Abdul Hamid Pakir, , Latifa K. Suliman, Mahyuddin Ramli
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25353

AbstractA study was fulfilled concerning the source and the distribution of PAHs in the effluent proceeding from an oil refinery. The monitoring of the PAHs concentration in the refinery’s effluent also was performed during a year long. The practical goal of the work was to observe the complying with the limits imposed by the current legislation and to identify the potential risks of exceeding these limits in the future. For this study, gas chromatographic and HPLC methods were used. The metho...
Autori: Anca Iuliana Birladeanu, Claudia Irina Koncsag, Mariana Popescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25357

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

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

AbstractUltrafiltration (UF) represents an important option for the advanced wastewater treatment as it offers good performances from both technical and economical points of view, for the removal of suspended solids, colloids and some of the organic compounds present in different effluents. The occurrence of priority organic pollutants in wastewaters streams and the environment has raised intensive scientific debates about their effects and the possible abatement technologies. As part of a broad...
Autori: George Barjoveanu,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25390

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 paper describes in brief the electro-osmosis process and reviews the possibility to use it in dewatering the pulp and paper waste sludge. The waste sludge main characteristics and dewatering methods from the Vrancart SA factory are revealed. After the experimental method and test bench description, some results from the preliminary laboratory tests on the Vrancart SA sludge are presented and discussed....
Autori: Dorin D. Lucache, Adrian Bulgaru, Dan Ioachim, Elena Danila
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25392

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 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 photocatalytic degradation of sulfamethazine, a sulfonamide drug, has been investigated experimentally, in aqueous heterogeneous solutions containing n-type oxide semiconductors as photocatalysts, and by simulation, using neural network modeling. Through direct neural network modeling, the evolution of the photocatalytic oxidation process is evaluated as function of illumination time and type of catalyst. Inverse neural network modeling is a particular optimization that gives inf...
Autori: Ciprian George Piuleac, Ioannis Poulios, Silvia Curteanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25430

Abstract The paper presents the preliminary experimental results performed at laboratory scale set-up for different combined mechanochemical treatments of final effluents from a zootechnical farm from the central Moldavian region of Romania. Because of the high content of pollutants into wastewaters, the soil can be polluted and also the ground waters. To avoid this soil pollution episode, some combined mechano-chemical processes were studied and applied into a specific technological order as...
Autori: Carmen Zaharia, Mioara Surpăţeanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25434

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 This paper aims to propose a new solution for rational valorization of the secondary powder materials from steel makingin electric arc furnaces. The elaborated steel quality as well as the economical advantages represented by secondary powdermaterials recirculation were studied. A good correlation between the proportion of brickets loaded into the melt and the melting ofcarbon has been found. The proportion of the EAF dust brickets can grow even at 5-7%. Zinc presence could havenegat...
Autori: Mirela Gabriela Sohaciu, Avram Nicolae, Cristian Predescu, Stefan Velicu, Gheorghe Gh. Calea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25438

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 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 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 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 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 paper proposes itself to present some aspects about woody biomass as renewable source of energy and about one of the main product namely wooden briquettes. There will be put the accent on physical features of wooden briquettes namely its density but there has be not forgotten the ecological influences. It is also stated the conditions of experimental, type of machine that is used in laboratory experiments, type and feature of raw material and wooden briquettes. Finally some condi...
Autori: Aurel Lunguleasa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25491

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 This paper is a study about the symbiosis between the environmental aspects – innovation and competitive character of an industrial organization in our modern and sophisticated world. In actually global market and in conditions of world sever recession, for any organization or economic sector, the chance for surviving and development is given by adopting an innovative culture. This work contains case studies about the necessary steps for developing an innovative organization, a deb...
Autori: Florin Negoescu, Eugen Axinte, Gheorghe Nagit, Adrian Iosub
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25517

Abstract The idea of sustainable farming relies on raising its yield along with a safe and constant gain with minimum environmental impact and by ensuring the population’s food security. Sustainable agriculture is a large concept that encompasses the complexity of this production system, the biological stability of farming plants and varieties, the conservation and protection of natural resources, but also the implementing and generalization of high-output modern technologies. Sustainable a...
Autori: Brindusa Robu, Carmen Cătălina Ioan, Edinel Robu, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25520

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 In this work the experimental conditions to synthesize, by direct hydrothermal synthesis, self-bonded pellets of ETS-10 phase containing iron were studied. The following gel composition was used: xNa2O-0.6KF-1.28xHCl-yFe2O3-0.2TiO2-1.49SiO2-39.5H2O with 0.8Â???xÂ???1.4 and 0.015Â???yÂ???0.08. The products obtained were characterized through X-ray diffraction on powders (XRD), thermal analysis (TG, DSC, DTG), scanning electron microscopy (SEM) and microanalysis (EDS). The data obtai...
Autori: Pierantonio De Luca, Danilo Vuono, Monica Filice
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25544

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 Transferability process identifies the transportation projects which could be implemented successfully in different cities in order to encourage the good practices. This paper proposes a method to evaluate the environmental efficiency of a project by using a hybrid approach based on utility theory and data mining techniques. Transferability principle is applied to show the environmental efficiency of an access controlled area in the hyper centre of two different cities. COPERT III te...
Autori: Catalin Popescu, Luminita Ion, Tatiana Cucu, Jean-Marie Boussier, Augustin Mitu, Daniela Uta
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25560

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 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 This article presents the use of salt water springs in the Moldavian Oriental sub-Carpathians for treating certain diseases, based on archaeological discoveries and ethnographical surveys, correlated with known facts from the literature in the field. Nevertheless, what differentiates it from other similar area in Europe is the intense, unexpected continuity of traditional, nonindustrial water supplying coming from salt springs. Among the uses of salt water and halite in the area, th...
Autori: Ion Sandu, Marius Alexianu, Roxana-Gabriela Curca, Olivier Weller, Constantin Pascu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25574

Abstract Some doses of compost obtained in farms were tested during 2004-2006, comparative to chemical fertilization, at S.C. Soimul S.R.L. from Vacareni Plain, Jijila village, Tulcea district. It was found out that fertilization with 30 t/ha of compost had established the highest production of wheat Dropia variety, 6512 kg/ha, with 40.7% higher than unfertilized variant and 16.8% higher than N160P80K80 fertilized variant. The highest protein content of 15.21% has been obtained in the case o...
Autori: Mihail Axinte, Teodor Robu, Marius Zaharia, Costel Moglan, Carmen Ghitau
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25575

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 Wastewaters of textile and leather dying industries contain significant quantities of water-soluble dyes. Moreover the temperature and pH of these wastewaters may be controlling variables affecting the biosorption performance. In this study the sorption of dark blue dye by Aspergillus biomass and peat was studied as a function of temperature, initial dye concentration, and initial pH values. In addition, the effects of sorbent dosage on the sorption processes were systematically stud...
Autori: Cornel Cojocaru, Cornel Pohontu, Igor Creţescu, Mariana Diaconu, Roxana Elena Benchea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25587

Abstract The slags are an important waste and by-products of metallurgical industry. The present paper summarizes results obtained from physical and chemical analyses on metallurgical slag provided from S.C. ?Mittal Steel Galati? S.A. The physical structure and gradation of granulated slag depend on the chemical composition of the slag, its temperature at the time of water quenching, and the method of production. The following mineralogical components were noticed through bypowder X-ray diffr...
Autori: Maria Cioroi, Licuta Nistor Cristea, Igor Creţescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25588

Abstract The use of biomaterials as biosorbents for treatment of wastewaters will provide as a potential alternate to the conventional treatment methods. The main advantages of biosorption are high selectivity , cost effectiveness and good removal performance. World wide numerous low cost bio materials have tried for biosorption of dyes. In this present investigation, the dead biomass of Penicillium sp. fungus and wood sawdust was used as biosorbents and their capacity to removed malachite gr...
Autori: Cornel Pohontu, Florin Luca, Igor Creţescu, Manea Liliana, Mariana Diaconu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25593

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 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 Geographical Information Systems (GIS) can be used in biological conservation as decision support systems, integrating the spatially referenced CORINE land cover and using data to assess whether natural protected areas cover particular types of ecosystems and/or biogeographical diversity. This study analyzes whether the Natura 2000 sites, which are Special Protection Areas and Special Areas of Conservation declared in Romania cover the diversity of wetlands and coastal areas habitat...
Autori: Alexandru-Ionut Petrisor
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25605

Abstract Anaerobic digestion (AD) is a complex biological system which can be affected by several operational problems. Among them, biological foaming is one of the most difficult to deal with. It has many effects, such as causing gas pipe clogging and probe failures, and it can affect mixing devices, etc. Since the mechanisms involved in biological foaming development are not fully understood, it is not included in standard anaerobic digestion models. For this reason, a knowledge-based risk ...
Autori: Eric Latrille, Ignasi Rodriguez-Roda, Jean-Philippe Steyer, Joaquim Comas, Jordi Dalmau
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25610

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 Artificial neural networks (ANNs) are capable of learning the relationships between the dependent and predictor surface water quality variables and have a high ability to predict from the new data set. In this study, two different ANN methods, the feedforward network (FFN) and the cascadeforward network (CFN) were applied to predict two surface water quality variables such as chlorophyll-a (Chl-a) and fecal coliform (FC) using twelve other variables as an input to the models. Both me...
Autori: Hasan Merdun, Ozer Cinar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25623

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 Two different inocula - acclimated and non-acclimated to fat- were used to evaluate the methane production of cow manure, food waste and oily waste in batch assays. The inoculum adapted to fat had a better performance in the methanisation of substrates with significant lipids content. Furthermore, it is demonstrated that an increase in the ratio inoculum/substrate can enhance the initial methane production rate of oily waste when using a non-adapted inoculum, improving also the ultim...
Autori: Lucia Neves, Maria Madalena Alves, Raquel Ferreira, Rosario Oliveira
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25634

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

? 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

? COMPARATIVE CONSIDERATIONS ON THE STRUCTURE OF SOME MOLYBDENUM/NIOBIUM DOUBLE PEROVSKITES OXIDES ? THE INFLUENCE OF THE STORAGE TIME ON THE STABILITY OF BUTTER ? CaCO3 CONTROLLABLE SYNTHESIS BY DOUBLE EXCHANGE METHOD USING CaCl2 RESIDUAL SOLUTIONS ? OPTIMIZATION OF COAGULATION-FLOCCULATION IN THE TREATMENT OF CANAL WATER ? ANODIC DETERMINATION OF PENTACHLOROPHENOL FROM WATER USING CARBON NANOFIBER-BASED COMPOSITE ELECTRODE ? STUDY OF PRECIPITATES GROWTH IN COAGULATION ...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25663

? Environmental Engineering and Management Journal, Vol. 9 Nr. 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

Considering the membrane fouling problem in submerged anaerobic membrane bioreactors, a set of submerged double-shaft rotary anaerobic membrane bioreactor (SDRAnMBR) was constructed by applying a double-shaft rotary module to submerged anaerobic bioreactor, and the theoretic analysis of the characteristics of hydraulics dynamics in SDRAnMBR has been performed. The membrane fouling performance for treatment of synthetic brewery wastewater was investigated by SDRAnMBR. The results of a theoretical...
Autori: Ling Bai, Chao Liu, Weiguang Lanhttp://www.ecozone.ro/reviste.php?RID=25694

A submerged membrane bioreactor (MBR) was employed to treat wastewater containing different content of seawater in this work. During the process, the operating conditions were as follows: COD was 800-1000 mg/L, ammonium-N was 80-100 mg/L, pH was 7.5-8.5, mixed liquor suspended solids (MLSS) was around 7000 mg/L, dissolved oxygen (DO) was 2-4 mg/L. The results showed that the ammonium-N removal was better than COD removal. Sludge settling property was good in saline wastewater treatment, and the ...
Autori: Jin Li, Deshuang Yu, Dan Wanghttp://www.ecozone.ro/reviste.php?RID=25697

Calcium zincate as an active material in Zn/Ni secondary battery has been successfully synthesized by microwave method. The sample was characterized by X-ray diffraction (XRD), thermogravimetric analysis, scanning electron microscope (SEM), chargedischarge test (CT) and cyclic voltammetry (CV) analysis. The results show that the chemical composition of sample is Ca(OH)2¡2Zn(OH)2¡2H2O with regular spherical shapes. The results from CV and CT measurement indicate that the battery has very high d...
Autori: Mengliang Tong, Xuanyan Liuhttp://www.ecozone.ro/reviste.php?RID=25700

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

Chemical composition data of coalbed produced water can provide information to determine the water sources, understand the evolution, select appropriate treatment processes and increase the utilization efficiency of water resources. Based on methods of hydrogeology, water chemistry and environmental chemistry, the characters of coalbed produced water in the Powder River Basin in the USA and Qinshui Basin in China have been analyzed. Conclusions have been drawn as follows: (1) The coalbed produce...
Autori: Guang Xu, Li Tong, Mei Yang, Yi-wen Juhttp://www.ecozone.ro/reviste.php?RID=25715

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:One of the most complex aspects of water accounting is the assessment of point and diffuse source pollution. At present, thebuilding sector in European countries is responsible for 40% of the total energy consumption. To reduce the European Uniondependency on energy import, the strategy undertaken in Lisbon is to reduce as much as possible the energy consumption ofbuildings and to increase the share of renewable energy sources. As an average, house heating represents about 75% from the ...
Autori: Ferenc Kalmár, Tünde Kalmár
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25750

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: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 work presents the results in investigating the thermal behaviour of passive solar elements, for expanding the existing analysisand prediction methodologies. The interest focuses on solar control through natural shading with deciduous plants. This providesa natural path for incorporating all advantages the passive behaviour, available throughout the year. The simulation of thedynamic energy performance of building elements is developed, starting with a physical modelling of the vario...
Autori: Angelos D. Tzachanis
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25768

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: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 study involved investigating the effects of Cr(III) and the efficacy of powdered activated carbon (PAC) in reducing theinhibitory effects of Cr(III) on activated sludge under sequencing batch reactor (SBR) operation. The addition of Cr(III) into SBRsystem caused significant inhibitory effects on the activity of activated sludge as indicated by drastic drop in specific oxygenuptake rate (SOUR). The increase of Cr(III) concentration from 5 to 10 mg/L further deteriorated the treatment...
Autori: Eiichi Toorisaka, Makoto Hirata, Soon-An Ong, Tadashi Hano
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25773

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:Bioremediation is considered as one of the prominent and cost-effective cleanup technology to treat oily sludge disposals. In the present investigation anaerobic bioremediation of petroleum based oily sludge was studied in a slurry reactor by applying different experimental strategies viz., bioaugmentation, biostimulation and co-substrate addition. Total petroleum hydrocarbons (TPH) present in the oily sludge before and after degradation was extracted using soxhlet extraction procedure....
Autori: Asha Juwarkar, Kuppam Chandrasekhar, Mamilla Prathima Devi, Motakatla Venkateswar Reddy, Ponnapalli Nageswara Sarma, Srinivasula Reddy Venkata Mohan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25794

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:The paper presents the results of a study carried out using the Artificial Neural Network (ANN) for prediction the coagulation/flocculation process of suspended solids in water treatment plant (WTP). In this research 5 kinds of Poly Aluminum Chloride (PAC) as coagulant were used to examine the impact of coagulant kinds, PAC dosage and influent turbidity for removal of suspended solids. Determination of optimal coagulant doses is vital, as insufficient dosing will result in undesirable t...
Autori: Gagik Badalians Gholikandi, Mohammad Delnavaz, Reza Riahi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25806

Abstract:Analysis and debates of the scientific world and regional/local communities led to the conclusion that environmental problems are a global priority. European Union requested Member States the implementation of the Framework Directive specific for each environmental factor. In this context, Romania has pledged to achieve „good ecological status of water bodiesâ€? by the year 2015. The paper deals with the water quality monitoring of the Upper Olt River and the mathematical modeling of ...
Autori: Gabriel-Oreste Sumbasacu, Nicolai Sîrbu, Virgil Petrescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25813

In recent years, a new line of research, named eco-efficiency theory has become an issue of considerable interest. The most important works in relation with this topic focus on the fact that enterprises can maximize their economic benefits and minimize the impact on the environment at the same time. Therefore, the recommendation is to choose the so called strategy win-win, which allows for getting a double economic environmental benefit by means of a good management of productive resources, the ...
Autori: Esteban Pérez-Calderón, Jose Mondejar-Jimenez, María-Leticia Meseguer-Santamaría, Patricia Milanés-Montero
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25816

Heavy rainfall events have produced significant damages and casualties in the Moldavian Plateau (Romania) in the last decades. Such phenomena are characterized by large spatial and temporal variations, and the forecast of their occurrence is thus very challenging. This study aims to compare the radar estimations and the rain gauge measurements, in order to improve the quantitative precipitation estimation (QPE) in the area of interest. The research uses data from the WSR-98D (Weather Surveillanc...
Autori: Alexandru Dumitrescu, Aurora Bell, Bogdan Antonescu, Sorin Burcea, Sorin Cheval, Traian Breza
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25940

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

Abstract:The concept of sustainable development has become an important objective for policy makers, since the key principle ofsustainable development understands the interdependence between economy, environment and society concerns.The objective of this study is to analyze the supports for sustainable environmental remediation, considering sustainabilityindicators and sustainable remediation practices, based on both methods that are known for a long time as well as emergentprocesses and technol...
Autori: Isabela Maria Simion, Maria Emiliana Fortuna, Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25837

In recent years, a new line of research, named eco-efficiency theory has become an issue of considerable interest. The most important works in relation with this topic focus on the fact that enterprises can maximize their economic benefits and minimize the impact on the environment at the same time. Therefore, the recommendation is to choose the so called strategy win-win, which allows for getting a double economic environmental benefit by means of a good management of productive resources, the ...
Autori: Esteban Pérez-Calderón, Jose Mondejar-Jimenez, María-Leticia Meseguer-Santamaría, Patricia Milanés-Montero
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25845

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

The availability of good quality water is an indispensable condition for preventing diseases and improving the quality of life. Water is one of the most important renewable resources, which must be prevented from deterioration in quality. Various physicochemical parameters like pH, alkalinity, total hardness, total dissolved solids, calcium, magnesium, nitrate, have a significant role in determining the potability of drinking water. In this study, samples were collected from wells situated in vi...
Autori: Maria Cioroi, Mirela Praisler
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25853

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

The paper aims to present the environmental impact of pulp and paper manufacturing and the most important production and control practices to minimizing this impact. The environmental consequences of manufacturing pulp and paper from pulping and bleaching processes are discussed in qualitative and quantitative terms. In these processes, sulfur compounds and nitrogen oxides are emitted to the air, and chlorinated and organic compounds and nutrients are discharged to the wastewaters. Large quantit...
Autori: Adrian Catalin Puitel, Dan Gavrilescu, Gheorghe Dutuc, Grigore Craciun
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25857

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

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

Fluorescence spectroscopy is a promising approach to the characterization of natural aquatic components and organic pollutants, due to its rapid analysis and high sensitivity. Petroleum products had been studied, using fluorescence technique, in numerous occasions, as seawater and soil contaminant or as raw sample. Nevertheless, no complex assessment has been made on fluorescence real–time spectra of freshwater diesel oil contamination. This study reports a 5–days experiment on an urban rive...
Autori: Elfrida M. Carstea, Gabriela Pavelescu, Luminita Ghervase, Marina Tautan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25882

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

Since the last century, as a consequence of advanced industrialization, the remarkable growth of population, and its mobility have turned the field of transport into the main factor responsible for air pollution attributable to mobile sources of pollution. The continuous accumulation of various pollutants in the environment determines severe consequences on humans, animals and plants, buildings, works of art and landscape. Road transport represents, through its characteristic features – high f...
Autori: Gabriela Mitran, Ion Tabacu, Sorin Ilie, Viorel Nicolae
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25898

An alternative preparation method for PAC (pre-hydrolyzed aluminium chloride with general formula Alm(OH)nCl3n-m) by electrochemical synthesis is presented in this paper. The electrochemically obtained PAC (E-PAC), in which the most effective species of the polymeric Al component were estimated by 27Al RMN method, with properties similar to the properties of a commercially available PAC solution, was successfully generated in a electrochemical reactor. For obtaining as much as Al13 polymer by el...
Autori: Adina Pacala, Ciprian Radovan, Ilie Vlaicu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25901

Two experimental periods have been undertaken to investigate the biodegradability of sewage streams (mainly regarding the organic substances) produced by a gas cartridge production, filling and distribution company. A sequencing batch reactor (SBR) was used for the laboratory examinations launched with municipal sewage sludge with a concentration of approx. 3 g MLSS/L. The various conditions in the reactors followed each other cyclically (fill, anoxic, aerobic, settle, draw) three times a day. T...
Autori: Bence Fazekas, Karoly Reich, Krisztian Varga, Viktoria Pitas, Viola Somogyi, Zsuzsanna Banyai
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25902

The presence of pollutants in food raises some serious questions concerning their potential impact on consumers health, being necessary to monitor their distribution in the environment. The present work provides data regarding levels of organochlorine pesticides (lindane, p,p’- DDT, p,p’- DDE, p,p’- DDD, HCB, aldrin, dieldrin, endrin and hepthaclor) and PAHs: acenaphthene (Ace), acenaphthylene (Acy), fluorene (F), naphthalene (Np), anthracene (An), fluoranthene (Fl), phenanthrene (Ph), ben...
Autori: Alina Soceanu, Danut Tiberius Epure, Gabriela Stanciu, Simona Dobrinas, Viorica Popescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25905

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

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

AbstractEnforcement is a crucial final step in any policy process, including environmental policies. Ideally policy formulation issubsequently implemented and enforced. Enforcement is needed to make sure that the envisioned effects are realized in the end.The questions we put forward in this paper are what the meaning of enforcement is; how enforcement can be put on the politicaland administrative agenda; what difficulties are to be countered when strengthening enforcement at the local level. We...
Autori: , Theo de Bruijn, Vera Vikolainen
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25980

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

AbstractOn a daily basis one is confronted with litter. Most forms of litter are, however, of no concern to people. Nonetheless, litteraccounts for serious economic costs, and causes negative effects to health, safety and biodiversity. Most countries implementlitter reduction policy programs, often in the form of litter collection and penalties for littering. Litter reduction does notnecessarily have to be a government initiative as grassroots and business initiatives have shown; for instance, c...
Autori: , Laura Franco - Garcia, Theo de Bruijn, Thomas Hoppe
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25983

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

AbstractEU policy on waste management stresses the importance of an integrated approach to waste management, which includesconstruction of waste disposal facilities with prevention of waste generation and recycling, in line with management hierarchy:prevention of waste and its negative impacts; recovery of waste through recycling, reuse, safe final disposal of waste where thereis no possibility of recovery.This paper address the issue of municipal waste management and the impacts generated into ...
Autori: Ana-Maria Şchiopu, Cristina Ghinea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25987

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 a model and an algorithm used to develop a solar radiation database for Romanian territory. In order toobtain this database, two main steps were performed. In the first part, a clear sky solar radiation model was presented, inaccordance with the latest models published in European Solar Radiation Atlas. After this, a digital elevation model has beendeveloped, based on the Shuttle Radar Topography Mission database, which, together with the previously mentioned model,a...
Autori: Ciprian Nemes, Marcel Istrate
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26010

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

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

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

AbstractThere are many treatment methods used to remove color from textile wastewater, and Fenton oxidation, a well known AdvancedOxidation Process is one of the most efficient. Apart of Fe(II), other metal ions have been used as catalysts in Fenton’s Reagent,and Cu(II) proved to be a good alternative.In this study the effect of the concentration of dye, catalyst and hydrogen peroxide were studied and optimized for thediscoloration process of Reactive Black 5 using a Fenton-like process, H2O2/Cu...
Autori: Andrei-Petru Bertea, Armand-Florin Bertea, Romen Butnaru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26042

AbstractThe paper intends to contribute to the stages of bioremediation technologies elaboration, by means of experiments and efficiencydemonstrations of adequate biological depollution and ecological reconstruction methods. During the 2009-2011 period, heavymetals and metalloids, etc phytoextraction tests were performed with Lolium perenne L, from tailing samples collected fromwaste heaps and tailings dams of the mining exploitations (Rodna, Bistriţa–Năsăud, Fundu-Moldovei, Sucea...
Autori: Alexandru Crihan, Alin Bolonyi, Bianca Malschi Florian, Cecilia Roman, Dana Malschi, Dorian Brăhaiţa, George Ghira, , Marin Şenilă, Mirela Miclean
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26044

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

AbstractThe role of human resources in agricultural exploitations proved to be an essential matter due to the decisive influence on theagricultural crop efficiency and production results. There exist particularities regarding the calculation of the human resourcesnecessary in vegetal crop production, animal husbandry and other activities connected with agriculture. From an economicalfinancialpoint of view, the analysis of human resources efficiency is based on two indicators, as follows: labour ...
Autori: Carmen Olguta Brezuleanu, ,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26068

AbstractThe removal of residual oil from palm oil mill effluent (POME) using boiler fly ash was studied in this paper, with focus on theadsorption isotherms and kinetic studies by measuring the residual oil concentration using UV-spectrophotometer. The percentresidual oil adsorbed decreased from 80% to 5% as contact time was increased from 10 mins to 120 mins but increased from2.74% to 72.98% as initial concentration of residual oil increased from 0.04812 mg/L to 0.2406 mg/L. Pseudo-second order...
Autori: Jude C. Igwe, Stella N. Anioke, Uche Arukwe
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26078

AbstractTwo laboratory-scale constructed wetlands planted with Juncus effusus were used to investigate the effect of nitrate load on thesulfur transformation dynamics related to the removal of organic carbon and ammonium. Organic carbon was removed at aconstant high mean level of 80% (inflow of 25 mg/L total organic carbon), irrespective of the nitrate load. In contrast, sulfatereduction responded immediately to the presence or absence of nitrate in an opposing manner, indicating a high abundanc...
Autori: Shubiao Wu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26095

AbstractThis paper presents the results of the research analyses and laboratory studies, aiming to develop design guidelines and suitabletechnologies for the construction of durable and environmental friendly rigid pavements by using recycled cement concrete,resulted from various demolition works. Various recycling principles and technologies, specific laboratory methods of improvedtechnical solutions to enhance wear coefficients, density homogeneity, mixture contamination and water absorption o...
Autori: Marius Muscalu
ISSN: 1843 - 3707Abstract This paper presents the results of the research analyses and laboratory studies, aiming to develop design guidelines and suitable technologies for the construction of durable and environmental friendly rigid pavements by using recycled
http://www.ecozone.ro/reviste.php?RID=26098

The book edited by Haibo Xie and NicholasGathergood focuses on one of the most importantscientific issues of the 21 century which is thereplacing fossil fuel with sustainable alternatives suchas biomass. Fossil fuels are conventional rawmaterials for many industrial sectors includingchemical and energy production. Usage of fossil fuelis limited by their availability, price and carbonfootprint. Biomass is a renewable resource globallyavailable, cheaper and carbon sequestering. Step bystep shiftin...
Autori: Adrian Catalin Puitel
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26101

The ELSEDIMA International Conference on “Environmental Legislation, Safety Engineering and Disaster Management” held its 9th edition in 2012. This edition was organized by the “Babeş-Bolyai” University of Cluj-Napoca - Faculty of Environmental Science and Engineering, together with the Ministry of Administration and Interior - General Inspectorate for Emergency Situations, the Disaster Preparedness and Prevention Initiative for South – Eastern Europe and S.C. I...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26102

Abstract According to the Water Frameword Directive the classification of water bodies environmental quality and the achievement of “good status” by 2015 are requested for all the European aquatic environment, including transitional waters such as coastal lagoons. Although progresses have been done and many results have been achieved, several aspects of the WFD implementation can be further improved and current limitations are more evident for some categories of water bodies such a...
Autori: Andrea Critto
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26103

Abstract Being involved in the synthesis of precursors for amphetamine and amphetamine-like drugs, pyridine (Py) may be also regarded as a by-product found when these drugs are obtained via the Leuckart method. Also, pyridine is well known as a biomarker of microorganisms, when those are subjected to pyrolysis before analysis by various instrumental techniques. Consequently, since Py is not commonly found in the air, its presence as a contaminant at trace levels in a room could ind...
Autori: George-Bogdan Ghira
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26109

Abstract A set of 500 water samples collected from various sites of Tarnava Mare River, between Medias and Copsa Mica were analyzed, during three years (2010-2012). The physicochemical parameters like: temperature, pH, electrical conductivity (EC), total dissolved solids (TDS), salinity, calcium (Ca2+), magnesium (Mg2+), sodium (Na+), lead (Pb2+), chloride (Cl-), sulfate (SO4 2-), ammonium (NH4 +), nitrite (NO2 -) and nitrate (NO3 -) were determined. The results were co...
Autori: Ioana Piştea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26114

Abstract This research has been performed during summer time at Iasi Atmosphere Optics, Spectroscopy and Lasers Laboratory site (LOA-SL), aerosol monitoring station (47.19N, 27.55E). In order to properly identify and characterize the aerosol types, Aerosol Robotic Network (AERONET) data and sun-photometer measurements were analysed using parameters such as: optical thickness, spectral dependence of Ĺngström exponent (α), spectral dependence of Single Scattering Albedo and the ...
Autori: Florin Unga
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26116

Abstract The article presents the development of a mathematical model concerning thermal desorption in a tubular electric furnace, using the linear regression analysis principle. With a range of experimental data obtained from some laboratory tests on water evaporation plus pollutant (Hexaclorocyclohexane - HCH), evaporation resulting from the application of thermal desorption on some soil samples; a mathematical model was developed to calculate the mass of substance evaporated fro...
Autori: Calin Vasile Prodan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26125

Abstract In many industrial applications most of the solid particles are separated by size and for this purpose there are used the oscillating sieves. The separation process based on sieves is a complex one and it depends on several factors, such as the properties of solid particles submitted to the separation process and on the operating regimes of the separating equipment. We have studied the separation process of the behaviour of solid particles on a flat oscillating surface...
Autori: Ovidiu Bontas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26134

Abstract Large amount of radioactive sources generate gamma rays of various energies and intensities. Gamma-ray spectroscopy is applied for the quantitative study of the energy spectra of gamma-ray sources. In the present paper, a statistical analysis of the energy spectra of gamma-ray spectroscopy monitored during 4 years at the “Dosimetry and Radioprotection” Laboratory from ”Vasile Alecsandri” University of Bacău is provided. Several new mathematical parameters were calcula...
Autori: Marius Stamate
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26144

Abstract This paper develops a procedure whereby breakthrough curves obtained experimentally for ion exchange process in fixed bed ion mixed exchangers during water demineralization, can be used to characterize quantitatively and optimize the ion exchange process. In this regard, based on breakthrough curves there were developed statistical models that correlate three important factors which influence the process (superficial fluid velocity through the layer, changing layer height,...
Autori: Iuliana Rogoveanu Radosavlevici
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26147

Abstract After any treatment process of wastewater results residual sludge that is characterized depending on the type of the wastewater or by the sludge treatment type. The sludge treatment process can be divided in three important stages: the preliminary stage (with the sludge thickening), the stabilization stage, and the dewatering stage. The paper shows the results of the research for the identification of the most efficient organic cationic flocculants, which might be used wit...
Autori: Mariana Turcu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26149

AbstractWith the adoption of lab physical simulation, this paper has studied the moving characteristics of overlying strata and thedevelopment rules of water-flowing fractured zone in multi-excavation disturbed zone in close-distance seams, and analyzed thefeasibility of water-preserved mining in multi-excavation disturbed zone. The experiment result has showed that under thegeological conditions of Suancigou Coal Mine, after the upper slicing mining of upper-6 coal seam, the development height ...
Autori: Liqiang Ma
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26173

AbstractToday's society experiences a growing interest in social problems. This leads to the need for companies to assess their impact onthe environment, in its social, environmental and economic dimensions. As a result, organizations are incorporating socialpractices that are used as variables of marketing to attract and retain customers. In this context, the purpose of the present study is twofold; namely to analyze the organizational culture change of the hotels directors because of the requi...
Autori: Isabel María Rosa Díaz
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26190

AbstractThe purpose of this paper is to analyze the impact on rooms pricing of environmental management practices in the hotels ofAndalusia (Southern Spain). Empirical evidence is obtained using a database that was created as part of the project Quality,Productivity and Competitiveness in the Hospitality Industry for Andalusia (PO7/SEJ-02889). From this database, we use asample statistically representative of hotels in the region and applied a hedonic pricing model. The main reason for using thi...
Autori: Alejandro García-Pozo
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26192

AbstractThe transport of hazardous substances is an essential economic activity because it represents a quite relevant percentage of thetotal goods transportation. The risk associated to such an activity is fundamentally related to the possibility of an accidenttriggering that may cause negative environmental and public health consequences. A recent example is the Viareggio accident(2009), which involved the blast of tank wagons containing liquefied petroleum gas (LPG) and caused more than thirt...
Autori: Vincenzo Torretta
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26200

AbstractThe dominant litter samples Pinus sylvestris L. needle litter and Acer platanoides L. leaf litter were collected in the coniferousmixed forest located at 54ş43‘ N 25ş19‘ E (Vilnius, Lithuania) in April 2010. Different heating temperatures (150, 250, 350, 450and 550şC) and 2 hour heating duration were used to produce ashes. The selected heating temperatures affected mass loss, colour, pH, electrical conductivity (EC), C/N ratio, nutrient concentrations of the ash. The darkness of Munsell ...
Autori: Jolita Dūdaitė
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26208

AbstractThe current literature on SMEs presents a range of factors that influence their decisions regarding the adoption of environmentalmanagement practices. In particular, some common factors are the pressure from stakeholders, the awareness of environmentalissues, the level of local authorities’ support, the benefits arising from the adoption of such practices and the role ofenvironmental regulations. This paper examines some of these factors through a case study research methodology on two G...
Autori: Ioannis E. Nikolaou
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26213

AbstractLow water quality due to high levels of ammonia, chemical oxygen demand (COD), abnormal pH, and undesirable water color isprevalent in many prawn ponds in Malaysia. A composite medium used in the treatment of prawn pond effluent was examinedfor the reduction of undesirable parameters. The composite medium is a mixture of limestone, activated carbon, zeolite, and ricehusk. Experiments were conducted under three different conditions, i.e., sole aeration, adsorption, and adsorption with pre...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26219

AbstractRiparian buffers play an important role in improving water quality, providing wildlife habitat, and reducing suspended sedimentsand pollutants entering the water body. The efficiency of pollutant reduction by a riparian buffer is greatly influenced by thewidth of the riparian buffer. In this study, the Soil and Water Assessment Tool (SWAT) model was applied to the YudeungStream watershed, Daejeon Stream watershed, and Gap Stream watershed to determine the most effective width of the ripa...
Autori: Jongpil Moon
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26223

AbstractThe efficiency of enzymatic hydrolysis of Penicillin G to 6-Aminopenicillanic acid under substrate inhibition has been analyzedfor a bioreactor with mobile bed of immobilized penicillin amidase. The results indicated that the optimum values of temperatureand pH remained the same as for homogeneous hydrolysis using free enzyme. The inhibitory effect induced at higher PenicillinG amount in liquid phase was attenuated by increasing the size of the biocatalyst particles. For this reason, at ...
Autori: Ramona Mihaela Matran
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26224

AbstractIn this article, hydrodynamic parameters and overall Oxygen mass transfer coefficient of petroleum based micro-emulsions in anairlift reactor were investigated. Four different petroleum-in-water micro-emulsion systems containing kerosene, heavy naphtha,light naphtha and diesel as oil based were used with concentrations of 3% and 7 % (v/v). The experimental data were supportedby simulation results obtained from the Computational Fluid Dynamics (CFD) method. The CFD was properly able to si...
Autori: Mostafa Keshavarz Moraveji
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26234

AbstractIn this work, a four factor three-level Box–Behnken factorial design based on response surface methodology (RSM) wasemployed to optimize the removal of phosphate from synthetic wastewater (mineral salts medium-MSM) by the bacterialconsortium (Bacillus sp. RS-1, Pseudomonas sp. YLW-7, Enterobacter sp. KLW-2). A mathematical model was then developedto show the effect of each medium composition and their interactions on phosphate removal. The effect of the lactoseconcentration (X1), pH (X2)...
Autori: Krishnaswamy Usharani
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26235

AbstractNutrient runoff is an environmental concern. There is a need for a robust method of predicting nutrient concentrations in runofffrom feedlots to facilitate management practices. To investigate the feasibility of using multiple linear regression (MLR) andartificial neural network (ANN) in predicting nutrients in runoff, simple water quality paramters (e.g., pH and EC) of runoff froma feedlot in North Dakota, USA, were used to train an ANN. Both models accurately predicted potassium concen...
Autori: Bilal Cemek
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26236

AbstractThe applications of biofilm treatment technologies for domestic wastewater are being increased in many parts of the world. Theaim of the study is to assess a compacted aerobic attached growth fix-film unit (termed Bio-cache) for treatment of small volumedomestic wastewater. The system consists of the miniature plastic packing matrix, which provides a large surface area of 300m2/m3, so as to maintain the high rate growth of viable organisms responsible for organic degradation. The study o...
Autori: Alireza Valipour
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26266

AbstractThe main objective of this study is to investigate the utilization potential of oil well-derived drilling waste (DW) in the firedshale-brick production. Different mixtures were suggested for the experimental work with the DW content varying from 20% to40%. The prepared briquettes from different mixture were fired at a temperature ranging from 950°C to 1050°C for 1 h, with aheating rate of 2~3°C /min. Water absorption, apparent porosity, bulk density, weight loss by ignition, firing shrin...
Autori: XiangGuo Li
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26269

AbstractOil spills inflict serious pollution on the environment. Numerous environmental rules and regulations have been made to improve oil spill response and cleanup performance. However, current oil spill control technologies have failed to ensure environmental safety and ecosystem integrity. Cleanup efforts often lead to more environmental hazards in one way or the other causing public outcry for alternate energy sources. Since hydrocarbon driven energy demand is expected to rise in the fores...
Autori: Abdul Aziz Al-Majed, Abdulrauf Rasheed Adebayo, Mohammed Enamul Hossain
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26278

AbstractOceans have been proved to be an important resource due to their abundant reserves in oil and gas. However, because of the extent of oil exploration and development in recent years, the marine ecological environment has been increasingly affected. At present, the control and treatment of environmental pollution from offshore drilling both at home and abroad have focused on end-treatment after problems have already emerged. Nevertheless, preventative measures and appropriate control links...
Autori: Guancheng Jiang, Guangquan Liu, Hao Deng, Rongsha Wang, Shuixiang Xie, Yu Xu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26279

AbstractIn the present work an optimized experimental condition has been developed for the treatment of pulp and paper mill wastewater using an electrocoagulation process. The removal efficiency of 85 % COD and 94 % of color with a good repeatability of results (RSD <3%) has been achieved under the optimal experimental conditions of pH-7, treatment time of 2 h and a current density of 15 A/m2. In this study, wastewater from paper mill has been used and thus, high efficacy of removing the poll...
Autori: Chhaya Sharma, Rajni Sharma, Satish Kumar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26281

AbstractThe significant increase in air transportation expected over the coming decades, combined with the initiation of the emissions trading system (EU-ETS) within European aviation, is increasing the requirement for airlines to find new levels of efficiency in their operating practices leading to reduced emission levels. Technological developments are expected to lead to substantial reductions in fuel burn and emissions over the long term, including aircraft design optimization and the use of...
Autori: Athanasios J. Kolios, Stuart Howe
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26282

AbstractIn the present paper, support vector machines (SVMs) are used to develop a quantitative structure-activity relationships (QSAR) model for the reaction rate constants (-logkNO3) of 115 heterogeneous organic compounds, through reaction with nitrate radicals (NO3•) in the troposphere. Two quantum chemical descriptors used as the inputs for the SVM model were calculated with density functional theory (DFT), at the B3LYP level of theory with 6-31G(d) basis set. The best predictions were obtai...
Autori: Bing Yi, Jiyong Deng, Xinliang Yu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26284

AbstractThe objectives of this study were to investigate of cadmium and chromium adsorption from aqueous solutions by using orange (Citrus sinensis var Tampson) and sour orange (Citrus aurantium) mesocarp. The chemometric approach was applied for the optimization of removal percent of Cd2+ and Cr6+. To optimize Cd2+ and Cr6+ removal percent, the effect of four experimental parameters on removal percent was investigated by means of multivariate analysis. The considered factors were Cd2+ and Cr6+ ...
Autori: Maryam Bagheri Ardebilian, Mohammad Ali Zazouli, Pouneh Ebrahimi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26287

AbstractWorldwide, waste materials are produced as a by-product of industrial manufacturing and placed in storage areas. One of the waste materials is filter cake (FC). FC is formed during the infiltration of cooling water in steel factories. The main aim of this research is determination of optimum usage of FC in the production of impermeable layer on ground by using fuzzy model approach. Because of this, in the study, FC as a waste material was hardened with cement and an impermeable layer was...
Autori: Ä°lker Bekir Topďż˝u, Murat Karacasu, Tayfun Uygunoğlu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26288

AbstractSecondary aluminium production inherently generates significant amounts of slag of variate composition and including dangerous compounds. Consequently, a care treatment of the resulted slag is imperatively necessary for preventing the environment pollution and for recovering valuable materials even if present in low amounts. The aluminium recovering procedure is based on a chemical and hydrometallurgical slag treatment, leading to the technical grade aluminium sulphate (AS), possible to ...
Autori: Carmen Tociu, Cristina Maria, Elena Diacu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26295

AbstractThe monitored natural attenuation (MNA) of groundwater contamination is in many cases considered to be a cost-effective andappropriate strategy to manage the remediation of contaminated aquifers. A prerequisite for the public acceptance of such NAremediationapproaches is that the efficiency of the presumed NA-processes should be proven. This proof must be based on anextensive hydrogeological and in-situ characterization of the ongoing aquifer processes. Additional investigations of aquif...
Autori: Achim Möller, Anja Berning, Anne Berghoff, Bernd Mahro, Christoph Wortmann
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26312

AbstractThe aim of this study was to evaluate the results of an urban pilot project on separate collection of packaging wastes. The projecthas been performed in a developed and industrialized city of Turkey, Kocaeli with the aim of collecting packaging wastesgenerated in residents, public offices and other business offices. The project was carried out according to packaging wastemanagement plans developed by sub-municipalities in coordination with Kocaeli Metropolitan Municipality. Total monthly...
Autori: İsmail Özbay
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26325

AbstractThis paper presents a study of the thermoaerodynamic spectrum inside an asymmetrically heated vertical channel of a doubleskinfaçade. A double-skin façade is an envelope construction that consists of two transparent surfaces separated by an airchannel. The numerical modeling was developed using the Ansys-Fluent simulation software under conditions of forcedconvection, using a three-dimensional geometry and a “k-ε standard” turbulence model. Then, experimental tests were performedon ...
Autori: Cătălin George Popovici, Cătălin Grigoraş, , Theodor Mateescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26332

AbstractAlgal blooms in reservoirs used for both fish and drinking water production are a major water quality problem. The authorsassessed data gathered from both published literature and from their own field enclosure experiments to analyze the relationshipsof phytoplankton chlorophyll α concentrations with biomass and algal cell count. Experimental data were collected from indoorlocations, field enclosures, and natural water bodies. Under laboratory conditions, where the types of algae an...
Autori: Chang-juan Zang, Chao Lin, Feng Gao, Hong-chuan Pan, Miklas Scholz, Min Wu, Sheng-lan Du, Sui-liang Huang, Yong Guo
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26335

AbstractToxic cyanobacteria are an emerging and increasing threat to public water supplies across the world. As a result,it is essential tominimize the risk from toxic cyanobacteria and their metabolites, and the key is to be vigilant and monitor for cyanobacteria andcyanotoxins throughout the source water and the treatment plant. The present study aims to verify the validity of the traditionalprocess of coagulation and chlorination to remove microcystins (MCs) in the Xinxiang water plant in Chi...
Autori: Bang-Jun Zhang, Qiong-Qiong Ding, Wei-Hong Zhang, Xiao-Yu Li, You-Hai Xie
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26345

AbstractThe adoption of Carbon tax is usually thought to be one kind of important economic measures to reduce carbon emissions. Onthe one hand, the adoption of carbon tax can reduce the use of fuels that contain high percentage of carbon, and promote thedevelopment and use of renewable energy. On the other hand, the measure will affect energy prices, supply and demand, andincome distribution, thus causing negative effects on economic growth. This paper discusses the design of the basic taxations...
Autori: Yan-bing Cai
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26371

AbstractThe environmental pressure brought by foreign direct investment (FDI) to China has been an increasingly common topic. It is thecurrent and later policy tropism to protect environment all-sided and keep the environmental elements continual use in making useof FDI in China. Environmental effect of FDI is a "double blade sword". This paper first analyzes the environmental effects ofFDI and the terms of its positive effect, and then analyzes the negative environmental impacts of FDI in China...
Autori: Hong-Min Qu, Lu Yang, Yan-Bo Zhang, Ye Liu, Ze-Shen Wang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26372

AbstractAcid rain is a general term used to describe acid depositions, i.e. rain, fog and snow (known as wet deposition), as well as acidgases and particles (known as dry deposition). Acid rain is of particular environmental concern in Romania, as many soils havelately become acidic, causing serious damages to plants, animals and human beings. The purpose of this study is to evaluate bysimulation the impact of acid rain on a podzol sample taken from the Retezat National Park, a Romanian protecte...
Autori: Clementina Moldovan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26399

AbstractEmployers notified about working places under special conditions are required to develop Preventive and Protective RevisedPlan, in order to ensure the improvement of workers safety and health protection, including specific measures and actions, so thatthose working places comply with the norms and operate under normal conditions by the late 31 December 2013.This paper considers some outcomes of the Nucleu Program PN 07450226 funded by Romanian National Authority for Research(ANCS) and de...
Autori: Marius Kovacs
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26404

AbstractStatic electricity represents one of the potential ignition sources for the explosive atmospheres. The test methods for materials, ingeneral, and especially the test methods for textile fabrics for assessment of the protective performances in static electricity, haveknown a permanent evolution alongside newly developed electrostatically dissipative materials. Within the National Institute ofResearch and Development for Safety in Mines and Explosion Protection (INCD-INSEMEX) new testing s...
Autori: Mihaela Părăian
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26405

AbstractIn Romania’s industrialized areas there are a large number of people, and therefore the amount of generated waste becomesimportant. Moreover, waste management activities have a high share in local and national administration. Prahova County hadthe highest national average density of 62.83 inhabitants/km2. With two major cities, Ploiesti and Campina, the composition ofthe urban and rural waste stored in landfill does not always respect the existing norms at national and local level. The s...
Autori: Casen Panaitescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26423

AbstractOpen-cycle desiccant air conditioning represents an attractive alternative to the classical method based on electric vaporcompression. The performance of the rotary dehumidifier has a significant effect on the capability, size and cost of the whole airconditioning system. In the present paper a detailed two-dimensional mathematical model of coupled heat and mass transferprocesses manifesting at the moist air-solid desiccant interface has been formulated. It was studied packed bed absorbe...
Autori: Carmen Ema Panaite
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26434

AbstractThe objective of the study is to set up and calibrate a model using the soil and water assessment tool (SWAT) in order to simulatethe water flow in the Buyo Lake located in west of Cote d’Ivoire and to test and evaluate the usefulness and the performance ofthe model. In this study, we had used the ArcSWAT graphical user interface to manipulate and execute the major functions ofSWAT model from ArcGIS tool. Hydrological modeling of Buyo Lake Basin was carried out with the ArcSWAT interface...
Autori: Tanoh Jean-Jacques Koua
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26442

AbstractThis paper presents a three-dimensional mathematical model which characterizes the variation of sound pressure levelpropagation and the variation of attenuation of the sound pressure level propagated in an enclosed space. The variable taken intoconsideration both in the experiments and in the mathematical modeling were: the positions of the acoustic screen to noisesource; the height of the microphone to record the sound pressure level for a variable number of walls. The mathematical mode...
Autori: Claudia Tomozei
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26443

AbstractThe process of semi-volatile aerosol particle evaporation was studied with respect to both computational and experimentalapproaches. A Sinclair-La Mer type aerosol generator was used to produce monodisperse particles from four n-alkanes(tetradecane, hexadecane, octadecane, eicosane) while particle sizing and FID measurements were applied to quantify particleandvapor mass and their subsequent phase distribution. Aerosol dilution and later stationary analyses in a flow tube at two timeinte...
Autori: George C. Dragan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26448

AbstractIn the present work, the kinetics of amaranth dye biosorption onto the roots, stems, leaves and the whole plant of water hyacinth(Eichhornia crassipes) were studied for differential evaluation of the plant’s biosorptive potential to remove the toxic dye fromaqueous solutions. E. crassipes´ leaves showed the highest level of amaranth dye biosorption (43.1 mg/g), followed by the entireplant (31.18 mg/g), the roots (28.51 mg/g), and finally by the stems (23.97 mg/g). The same differential t...
Autori: Imelda Guerrero-Coronilla
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26463

AbstractIn the last decades, the surface of Romanian forests decreased due to an intensive harvesting and, as a consequence, the price ofpulpwood significantly increased. In the same time, the regulations for environmental protection were successively hardened inRomania, so that all chemical pulp mills were closed for economic and environmental reasons. In these circumstances, Romanianpaper producers shifted to recovered paper as raw material. This decision is in accordance with trends of Europe...
Autori: Adrian Cătălin Puiţel
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26462

AbstractIn this study a new generation of plate-type laboratory air treatment biofilter is applied for the removal of gaseous contaminantsfrom air. The packing material for the biofilter consists of porous plates arranged vertically one after the other to produce acapillary humidification effect. The porous plate is made of polymer to secure the stiffness of the plate. Birch fibre granulesthermally treated in a steam explosion reactor are fixed on both sides of the polymer board. The granules ar...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26480

AbstractThe most important issues of the new millennium are the adaption of renewable energies; and the establishment and operation ofsocial and technical systems that have little impact on the environment. People must undertake to solve this problem during theestablishment of the everyday life of the settlements. In the course of this study, the authors surveyed the documents related tothe energy strategy of the local municipalities of the Northern Great Plain region. This document analysis was...
Autori: Balázs Kulcsár
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26544

AbstractAnaerobic degradation (AD) of municipal solid waste (MSW) depends on the moisture and nutrient distribution within thebioreactor; these factors are affected by leachate recirculation. In this work, the effects of leachate recirculation of 15 to 120 byvolume percentage (%V) on AD were studied. The ojectives of this study are as follows: a) to determine which recirculation rateprovides the best conditions for accelerated anaerobic degradation (AD) and b) to determine the optimal range of r...
Autori: Maria del Consuelo Hernández-Berriel
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26557

AbstractThe distribution of mixing time for a split-cylinder gas-lift bioreactor has been investigated for simulated broths with apparentviscosities up to 26 cP. The results indicated important variation of mixing time on the height of riser or downcomer, as well asdifferent behavior of dispersion flows in the two regions. Thus, the highest mixing efficiency for the ascending circulation hasbeen recorded for the intermediary positions, placed above the sparger. Contrary, for the downcomer, the i...
Autori: Anca-Irina Galaction
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26560

AbstractThe incorporation of phosphorus (P) into sediments and the changes in its bioavailability under intermittent P input and sedimentresuspension conditions were investigated via laboratory experiments. The sediments were disturbed daily for 10 min and thenallowed to settle for 1430 min after each disturbance to simulate the intermittent sediment resuspension conditions. The removalof soluble reactive P from the overlying water under sediment resuspension was greater than that under static c...
Autori: Li Dapeng
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26567

AbstractPresent study was envisaged to study chelators-metal interaction in phytoaccumulation of metals as a bioremediation technologyto decontaminate metal pollution and adsorption of metals on soil. Lactuca sativa was used as model plant for phytoaccumulationto identify uptake of Cadmium (Cd) and Lead (Pb) and their subsequent accumulation in edible tissue of plant. Cadmium andlead were two selected metals for phytoaccumulation and copper was also studied for adsorption experiment. Green house...
Autori: Audil Rashid
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26568

AbstractEnd-of-life tires are waste materials that pollute landscapes when they are disposed of in tire dumps. However, its life cycle is notfinished when they are scrapped. The rubber of end-of-life tires could be used for new purposes as construction material in roadrehabilitation. A gap-graded mix characterization was carried out in this work by means of laboratory and field performancetests. The mixture has a high content of crumb rubber (CR) by weight of bitumen. Crumb Rubber was added to t...
Autori: Victor F. Vázquez
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26577

AbstractThe potential application of methemoglobin from bovine blood to remove aromatic compounds in the presence of hydrogenperoxide has been evaluated. The organic compounds herein tested include phenols, amines or hydrocarbons, which arepollutants deriving from different industries and display high persistence and toxicity in waters. The oxidative process has beencharacterized by soluble hemoglobin and immobilized on Eupergit CM, using 4-chlorophenol as a model substrate. Theobtained ...
Autori: María Teresa Pérez-Prior
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26580

Abstract Biodegradable chitosan was used to cover fertilizer granules with an inert, impermeable layer in order to obtain a material with controlled release properties. The process was performed in a laboratory drum granulator. Prepared materials were characterized with available analytical methods (XRD, optical microscopy). The layer thickness of the obtained materials was in the range of 0.047 – 0.5425 mm. The degree of nutrients' release (0.64-0.965 within five hours) were deter...
Autori: Krzysztof Lubkowski
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26583

Abstract The biological removal of organic matter from a cosmetic wastewater by sequencing batch reactors has been optimized by analyzing the influence of the hydraulic retention time as well as the inclusion of anoxic and/or aerobic stages in the process sequence. Hydraulic retention time of 5 d led to the highest total organic carbon and chemical oxygen demand removal regardless the sequence used. Although a completely aerobic sequence can be used for cosmetic wastewaters treatment, the al...
Autori: Montserrat Tobajas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26589

Abstract Cadmium leaching experiments from hazardous waste containing 16.5 wt% CdO were conducted using H2SO4. Dominant experimental and process parameters were determined by factorial design. Six controlling factors were considered, i.e. solidliquid ratio, acid concentration, reaction time, particle size, stirring speed and temperature. Analysis of variance (ANOVA) was used to identify main effects and their interactions. An empirical model, based upon experimental results, was developed to...
Autori: Mahdi Gharabaghi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26590

Abstract The objective of this study is to develop a mathematical model which would confidently predict the rate of substrate degradation of an oil-water emulsion in a laboratory-scale completely-mixed continuous flow reactor using the photo-Fenton treatment process. Two models are developed from first principles and the predicted substrate removal rates for both models are compared with experimental data. The principal conclusions of the study are that both models produce good correlations ...
Autori: Maha A. Tony
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26613

Abstract This article presents the results of investigations addressing the accumulation of heavy metals in different layers of the Lake Talkša, Lithuania. For the sampling from the ice of intact structure of the sediment the turf borer was used. Concentrations of these heavy metals in sapropel layers were determined in the extracts of sapropel. After the preparation of samples, the concentration of Pb, Ni, Cr, Zn and Cu were measured in the laboratory by means of atomic absorption sp...
Autori: Justyna Kozlovska
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26615

Abstract The interest in waterborne paints amelioration increased lately due to the toxicological effect of certain ingredients on human health, the restrictive environmental legislation and the depletion and escalation in price of raw materials. Research efforts in formulating waterborne paints are directed to insure low volatile organic compounds (VOCs) emission while maintaining and even improving their properties. This paper presents a waterborne paint formulation process. The required ...
Autori: Andrei Ionut Simion
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26639

Abstract 18F-FDG is a glucose analog in which the hydroxyl group on the second carbon is substituted with 18F, being used as an indicator of glucose uptake and cell viability. The aim of this work was to synthesize the 18F-FDG and to validate the methodology for the assessment of its both radiochemical and chemical purities, according to the European Pharmacopoeia. The proposed methodology encompasses three chromatographic methods: radio-HPLC, radio-TLC and HS/GC. Radiochemical impurities ...
Autori: Mirela Mihon
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26640

Abstract The caraway (Carum carvi L.) samples were collected from little meadows situated in Harghita Mountain (Mădăraş Ciuc, Harghita Băi, Jigodin, Tuşnadu Nou), where a relatively small area was covered by a group of rich populations of wild cumin. The harvested plants are dried by: a) convective laboratory dryer in thick layer, b) static outdoors in sunshine, and (c) static in a warm indoor place in darkness. The hand-picked seeds were separated from debris by sie...
Autori: Csaba Dezső András
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26646

Abstract Anaerobic digestion was analyzed as the biological process that converts the organic matter present in various types of wastes, activated sludge from the wastewater treatment facilities respectively, into biogas. Latest advancements in the mathematical modeling, simulation and control practices have helped in gaining a better insight of the process. In this paper, an energy efficiency and techno-economical investigation of anaerobic digestion technology for the CHP cogeneration unit...
Autori: Alexandrina Zuza
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26648

Abstract Hydrogel membranes obtained by neat polyvinyl alcohol (PVA) or PVA with various bio insertions like: Scleroglucan (Scl), Zein (Zein) or Cellulose (Cel), were subjected to diffusion and sorption/desorption experiments using different type of dyes such as: Crystal Violet (CV), Methylene Blue (MB), Congo Red (CR). If the sorption, desorption or diffusion of a dye in/from/through a hydrogel is usually monitored by the dye solution analysis, in this case the transport phenomena are follo...
Autori: Adina Papancea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26649

Abstract The capacity of ion exchange resins, MN 500 and C100 H, for the removal of copper ions from aqueous solution has been investigated under different conditions, namely: initial solution pH, initial metal-ion concentration and contact time. The adsorption of Cu(II) on these resins follows the first-order reversible kinetic. The film diffusion of Cu (II) in these ion exchange resins was shown to be the main rate limiting step. The studies showed that these cation exchange resins can be ...
Autori: Cristina Modrogan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26658

Abstract The development of biodiesel industry in the recent past brought into discussion the valorization of glycerol as the byproduct of this technology. Dehydration of glycerol leads to acrolein, mainly used as a raw material in the production of acrylic acid and its esters. Several research efforts dealing with the synthesis of acrolein from glycerol are reported in the literature. However, they are limited to catalyst testing on laboratory scale, no attention being paid to the process f...
Autori: Ionut Banu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26666

Abstract The variation of the content of 12 phenolic compounds from 5 months aged Cabernet Sauvignon and Merlot wine samples treated with siliceous and aluminosiliceous porous materials was analysed through a HPLC method. The standard physical-chemical analyses (alcoholic concentration, total acidity, volatile acidity, relative density, reductive sugars, total dry extract, non-reductive extract, free SO2, total SO2, pH) were registered. The used nanomaterials: SBA-15, Al-MCM-41, KIT-6 were s...
Autori: Camelia Elena Luchian
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26667

Abstract Magnetic contamination is considered more and more as a challenging issue related to biosphere pollution with magnetic materials originating in natural and artificial sources (volcanic eruptions and respectively industrial activities that contributed to iron and other metal compounds spreading in air, water and soil). Aiming to study the impact of magnetic metal ions such as iron and cobalt on the metabolism of some environmental microorganisms, in this paper an experimental simulat...
Autori: Lacramioara Oprica
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26675

Abstract The degradation and adsorption behavior of dibutyl phthalate (DBP) in methanogenic phase refuse was investigated through laboratory microcosm experiments. The results showed that the half-life of DBP in the sterilized refuse was 5.9 times higher than in unsterilized samples, but that it decreased by 35.8% when dominant bacterial strains were added. Different concentrations of DBP did not have obvious effects on its degradation. The half-lives of DBP were decreased by 53.0%, 37.2% an...
Autori: Chengran Fang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26690

Abstract Adsorption has proved to be an excellent way to treat industrial wastewater, due to its significant advantages like easy availability, inexpensive, ease of operation and highly efficient, compared to conventional expensive adsorbents like activated charcoal, alumina etc. The present investigation focused on utilization of Mangifera indica seed shell substrate for the removal of toxic heavy metals like Fe(II) and Mn(II) from wastewater. Mangifera indica seed shell substrate as an eff...
Autori: Tikaram D. Kose
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26713

Abstract Locally sourced clay from Kuala-Kangsar town in Perak state Malaysia was used in both its raw (RKKC) and modified (MKKC) form as adsorbents for the removal of methylene blue (MB) from synthetic textile wastewater in batch adsorption process. The raw clay was modified through H2SO4 acid treatment, Al(OH)3 ion exchange, calcinations and then molded into beads before freeze drying. The BET surface areas of RKKC and MKKC were 11 and 100 m2/g, respectively; their elemental analysis and ...
Autori: Manase Auta
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26717

Abstract Large quantities of snail and clam shells are left as waste material when their meat is used as food for people. It has been a big problem that how to treat these wastes and usually these are land filled as wastes. In the present paper, these shells are studied as recycling resource for phosphate removal from solutions. Laboratory-scale batch experiments were conducted to evaluate the efficiency of snail and clam shells in removing phosphate from aqueous solutions. Major factors inv...
Autori: Ji Bing Xiong
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26727

Abstract Particle size distribution is one of the most influential factors of most soil physical and even some soil chemical characteristics. As modern measurement techniques are being introduced, the need for comparing new methods with older methodologies arises because comparability means data continuity. Here, three institutes conducted a comparison of particle size measurement among the laser, areometer and pipette techniques. The purpose of the comparison was to a) discover any differen...
Autori: Csaba Centeri
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26733

`Abstract End of life tires require sound accounting of environmental performances to design sustainable procedures for material recovery. Their use in rubber modified asphalt provides could lead to the improvement of technical and environmental performances of asphalt roads, but the effectiveness of simplified procedures is to be proved. During LIFE+ project ROADTIRE, a rubber modified asphalt road prototype, with the upper surface layer containing 10% crumb rubber in the bituminous binder,...
Autori: Irene Bartolozzi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26741

Abstract An experimental study of mixing in autoclave vessel equipped with an anchor impeller was performed on the sludge proceeding from the treatment of mixed municipal and industrial wastewater. This unit operation is part of a process for the recovery of sludge. The mathematical modelling of the mixing was done having in view the scaling-up of this process. The mathematical model allows the calculation of the mixing power N as a function of the impeller diameter d, the vessel diameter D,...
Autori: Ancaelena Eliza Sterpu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26744

Abstract Along with nowadays growth of urban areas and population, it is more and more important to have better water resources management, especially regarding drinking water supply. Maintaining a good state of a water distribution network poses challenges that are addressed by research community. Two of the main challenges in management of water distribution systems are the reduction of energy consumption due to the high pumping requirements in some systems and/or reduction of water losses...
Autori: Mario Castro Gama
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26747

Abstract Extensive use of plastics leads to the increase of non biodegradable wastes that have to be recycled due to both dramatically decrease of natural resources to producing them and to their increasing need as well as due to environmental issues. Most of goods made by materials based on wastes have to be commonly used by people. Antibacterial character of those is necessary to avoid epidemics. This paper deals with determination of antimicrobial character of materials based on polymeric...
Autori: Florica Silvia Cristina Patachia
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26751

Abstract In this study, the comparative photocatalytic activities of undoped and N-doped TiO2 anatase nanocrystals towards the degradation of Reactive Yellow 125 (RY125) azo reactive dye in aqueous solutions under UV and VIS irradiation ranges were investigated. Both nanocrystals prepared by a fast-hydrothermal method using titanium isopropoxide as precursor were characterized morpho-structurally by X-ray diffraction, SEM/EDX analysis and BET measurements. Also, optical features of the nano...
Autori: Corina Orha
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26757

Abstract The link between the spread of diseases and the geographical environment has been made by scientists since a long time. Every element has an entire spectrum of possible effects on a community. One of the main reasons of studying the environment is the understanding of the way the environment conditions influence the human health and the identification of the modalities through which the negative effects of some external factors on this universal good of the society can be reduced. T...
Autori: Călin-Cornel Pop
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26760

Abstract This paper presents a toolset for the efficient control of the indoor air quality and thermal comfort in retrofitted buildings. The refurbishment of existing buildings, compliant to actual regulations, often leads to airtightness and the consequent poor conditions for the occupants that could cause low productivity and even sickness. For this reason, the CETIEB (Cost Effective Tools for Better Indoor Environment in Retrofitted Energy Efficient Buildings) project developed innovative...
Autori: Gian Marco Revel
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26770

Abstract Sustainability issues have driven academic researchers towards the definition of methodological tools to assess the impacts derived from products and services and to make them more ecologically friendly, economically profitable and socially suitable, and whose results have to be clear and understandable to a broad public. In the evaluation of complex socio-environmental systems, like agricultural ones, uncertainty often arises and the quality of decision processes can be a high conc...
Autori: Anna Irene De Luca
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26779

Abstract The Bio.Lea.R project aims to demonstrate the performance of a landfill for less reactive, biologically treated waste (pretreated organic wastes) compared to a conventionally managed landfill, with regard to both environmental (biogas and leachate production) and economic aspects. The objective is to control the pretreated biodegradable waste through a liquid injection in order to achieve the same biogas quantity in a shorter time than in conventional landfill. Laboratory and full ...
Autori: Alberto Godio
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26784

Abstract It has been recently shown that acid activation enhances the ability of zeolitic tuffs to bind weak organic bases. More specifically, tuff containing acid-resistant zeolites (i.e. clinoptilolite) exhibits higher sorption capacity than chabazite/phillipsite-rich tuff. Based on the above considerations, we investigated in depth the adsorption behaviour of two pesticides onto acid-activated clinoptilolitic tuff under different experimental conditions. The pesticides simazine and boscal...
Autori: Stefano Salvestrini
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26791

Abstract Recently several innovative suggestions on how industrial wastes can be utilised in new products have been presented in literature, e.g. as filler or additives in concrete, incorporated in ceramic materials to produce glass-ceramics and pavement construction. In this work, metallurgical materials from secondary aluminium scrap processing and glass waste derived from treatments of packaging and fluorescent lamps were considered for fabrication of new ceramic materials using powder te...
Autori: Rosa Taurino
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26794

Abstract This study was aimed to stimulate laccase production by Trametes pubescens MUT 2400 by using a tomato-based medium. Two sequential 2x2 factorial designs were used to determine the effect of carbon (C) and nitrogen (N) source concentration on laccase activity and biomass concentration; copper was used as the sole inducer (0.75 mM). Analysis of the first factorial design showed that N had a strong positive effect on the maximum laccase activity, which occurred at day 12 of cultivation...
Autori: Federica Spina
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26795

Abstract The identification of the critical source of nonpoint source pollution (NPS) plays an important role in formulation of Best Management Practices (BMPs). SWAT (Soil and Water Assessment Tool) was adopted for NPS nitrogen pollution modeling for Qinhuangdao City. The model was calibrated and validated by Sequential Uncertainty Fitting Version 2 algorithm of SWATCUP (SWAT Calibration and Uncertainty Programs) software. The model was used to quantify contributions of different nitrogen ...
Autori: Jihong Qu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26810

Abstract Drinking of arsenic contaminated waters has been reported adversely affect our health even at a concentration level as low as 10 g/L, therefore the availability of a reliable and cheap, and an environmentally arsenic detection kit is really indispensable. Although simple field test kits have been developed, most of them use toxic mercuric salt as a color-generating reagent for arsenic detection. Hence this study was conducted to develop a simple, cost effective, and environm...
Autori: Keat Khim Ong
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26819

Abstract The recycling of plastic waste is important both in the conservation of resources and the environmental protection. A plastic waste (PE/PP/PS/PVC) was pyrolyzed over a series of post-use FCC catalysts using a fluidizing reaction system similar to the FCC process operating isothermally at ambient pressure. Experiments carried out with these catalysts gave good yields of valuable hydrocarbons with differing selectivity in the final products dependent on reaction conditions. A model ba...
Autori: Ta-Tung Wei
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26836

Abstract Environmental issues have over the last few years become an increasing concern for both the public and for companies, but, less is known about how companies could internalize the negative effects of environmental issues. Public regulators are taking a tougher stance with regards to environmental regulations. As regulations become stricter, firms will have to pay the cost of compliance. In this paper, we attempt to shed some light on how firms could internalize these environmental ef...
Autori: Vera Ferrón-Vílchez
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26838

Abstract Landslides constitute an abrupt and short-lived geomorphic risk phenomena, which may cause significant damages to human made infrastructures or even claim human lives. The present study aims to assess landslide susceptibility, at regional scale, in the Bârlad Basin, situated in eastern Romania. The subject is approached by means of logistic regression analysis, which is one of the main methods employed for this purpose worldwide. A landslide inventory was carried out by digiti...
Autori: Cristian Valeriu Patriche
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26846

Abstract The amount of bottom ash produced in Italy from municipal solid waste incinerators is estimated at over a million tons per year. Up to now, it has almost all been disposed of in landfills. Therefore, large profit margins, from both the economic and environmental standpoint, can be expected from the recovery of this material, or at least from a fraction of it. In this study, a rapid procedure for the recovery of different bottom ash fractions based on mechanical sorting and aging was...
Autori: Ivano Vassura
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26853

Abstract Free cells of Rhizopus oryzae were used to study adsorption of several cations (Cu2+, Zn2+, Mn2+, Ni2+, Cd2+ and Pb2+) from wastewater within various experimental conditions. The influence of biomass dosage, pH and temperature on the removal process was investigated. The sorption efficiency increased with increasing the temperature in the range from 25 ºC to 30 ºC and pH from 5 to 8. The maximum removal percentage was achieved at a biosorbent concentration 0.25 – 0.3...
Autori: Kolishka Tsekova
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26857

Abstract The aim of this study was to determine the content of the main essential trace (Co, Cr, Cu, Mn, Se and Zn) and toxic (As, Cd, Hg and Pb) elements in milk by inductively coupled plasma-mass spectrometry (ICP-MS) and cold vapor atomic fluorescence spectrometer (CV-AFS) following priory microwave-assisted digestion with HNO3-H2O2. The milk samples were collected from local small-scale producers of different parts of Rodnei Mountains, Eastern Carpathians, Romania. Mean concentrations in...
Autori: Oana Cadar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26876

Abstract Waste management in Romania, in particular in Cluj-Napoca city, needs major improvements. By analyzing the results and implementation of waste composition studies which have been performed in different countries, it can be easily noticed that they can play a very important role in the planning stage of waste management, but also in the monitoring and evaluation of the process. Moreover, waste composition studies are an integrated part of waste management planning in developed countr...
Autori: Ioana Nicoleta Pop
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26888

Abstract The CoCrMo alloys have been widely used in artificial knee or hip joints. It is well known that these materials have a good corrosion resistance and acceptable biocompatibility properties. Zirconia as a ceramic biomaterial facilitates the osteoconductivity and tissue osteogenetic capacity in new bone formation around implant. Linear polarization and electrochemical impedance spectroscopy (EIS) were employed to characterize the electrochemical behavior of plasma sprayed yttrium oxid...
Autori: Manuela Romaş
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26896

Abstract In Palestine, environmental problems associated with industrial solid waste (ISW) have increased significantly in recent years. This paper presents survey results on current industrial solid waste management (ISWM) practices in the governorates of Nablus and Ramallah & Al-Bireh, Palestine. Solid waste generated from industries was quantified, characterized and discussed in terms of generation rate, storage, reuse/recycling, transportation, and final disposal. An attempt was made...
Autori: Issam A. Al-Khatib
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26903

Abstract Trace metal elements commonly exist in drinking water. Excessive exposing on them may result in lots of health problems. This paper mainly focuses on the accumulations of Cu2+, Cd2+, and Pb2+ in drinking water supply networks with amorphous Al(OH)3 formation. The effects of pH, water flow rate, and metal element contents were investigated at laboratory bench scale. It was found that chemical adsorption mainly occurred at pH > 7.0. Suspended Al(OH)3 showed a strong adsorption capa...
Autori: Wendong Wang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26906

Abstract The ethanol-gasoline blends have brought new challenges to the in-cylinder mixture air-fuel ratio control for the variable fuel characteristics especially in the traditional PFI (Port Fuel Injection) SI (Spark Ignition) engines. This paper studied all the dynamic links in the intake fuel transfer process from the fuel injectors to cylinders, including the wall-wetting effect and injector fuel flow characteristics. A wall-wetting fuel film evaporation model and an injector fuel flow ...
Autori: Dongwei Yao
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26918

Abstract The relation between the level of implementation of environmental practices and corporate financial performance (CFP) becomes important, especially when environmental policies, with corresponding standards and regulations, are adopted by the company on a voluntary basis and when companies’ economic activities affect stakeholders. In our research, we relate environmental practices with CFP by designing a way of measuring a particular environmental rating for which we didn't...
Autori: Dalina Dumitrescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26920

Aniline is a priority pollutant, which is known as a toxic organic pollutant released as effluent from several industries. Several physicochemical methods have been used for degradation of this pollutant. In this study, photocatalytic degradation of aniline from synthetic wastewater by ZnO nanoparticle was considered. The effects of different variables, such as irradiation time, the amount of photocatalyst, initial pH values and initial concentration of pollutant on the photodegradation of an...
Autori: Ahmad Jonidi Jafari
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26929

The pickling liquor used in the stainless steel manufacturing process is a mixture of nitric and hydrofluoric acid which generates wastewater with nitrate concentrations ranging between 500 and 6000 mgNO3--N/L. In the present study, laboratory-scale anoxic Sequencing Batch Reactors (SBRs) were used to treat high nitrate wastewaters. Two different sludge inocula were tested: one from a Municipal Solid Waste Leachate Treatment Plant (LTP), and the other from a Sewage Treatment Plant (STP). Meth...
Autori: Ana Isabel Pelaez
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26933

Water scarcity, the degradation of freshwater resources, and wastewater pollution are reaching crisis levels, especially in arid regions of the world. The reuse of wastewater was investigated by using intermittent media infiltration (IMI) to evaluate fecal coliform (FC) removal efficiency. Twelve IMI columns were packed with soil and natural filtering materials (sand, zeolite, vermicompost and charcoal) at percentages of 25, 50 and 75. The municipal wastewater was treated for the FC analysis ...
Autori: Sasirot Khamkure
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26935

The aim of this study was to examine the pollutant removal performance of a combined process using horizontal subsurface flow constructed wetland (HFCW) and an oxidation pond (OP) in the treatment of a decentralized domestic wastewater. Waters along the water flow and at different depths of the wetland substrate were sampled and analyzed during continuous operation. It was found that the HFCW-OP combined system presented good organic matter and phosphorus removal capacity. In the first year, ...
Autori: Wendong Wang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26943

The coastal zone accommodates some of the most diverse ecosystems in the world and offers a wide range of ecosystem goods and services; therefore it has become a focal point of human development. Over the last five decades, starting from 1960s, Kuwait has seen a tremendous alteration in the natural coastal morphological landscape (CML) due to the tremendous increase on coastal population that existed 50 years ago to the present manmade environment today. Most of the population is located in ...
Autori: Saji Baby
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26947

To explore the main sources and pathways of heavy metals entering fruits and the corresponding countermeasures, a field survey was conducted in Pujiang County, Zhejiang Province, China. The results showed that heavy metals in fruits came mainly from the use of foliar fertilizers, ripening agents, fungicides, pesticides, and other sprayed materials during the flowering and ripening stages. Therefore, a government program should be established to improve monitoring of agricultural products ente...
Autori: Bin Fang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26955

The flocculation process is applied in wastewater treatment to separate the destabilized colloid particles (or the particles formed during the coagulation phase) by forming flocs. The scope of this research was to identify the predictability of the synthetic organic flocculants use for industrial wastewater treatment. The research was performed at small scale, in laboratory, but also at industrial scale, by applying the synthetic organic flocculants in a real industrial wastewater treatment p...
Autori: Mariana Turcu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26975

This paper presents a study concerning the noise level in an enclosure, perceived through the envelope of the building, as a result of the activities carried outside the enclosure. The building chosen for measurements was a teaching laboratory designed for applicative activities and equipped with installations and devices used in laboratory work. To establish the sound pressure level transmitted from outside the building to inside, three types of noise sources were established: a diffuser, a...
Autori: Claudia Tomozei
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26978

The article studies the adoption of eco-innovation using the diffusion dynamic as a paradigm for investigating the environmental reform in providing public goods. The study focused on the wastewater collection systems and analyzed how the structure of the market, socio-cultural conditions, geographic proximity and the Gross Domestic Product level measured the acceptance or rejection of eco-innovation. The authors investigated the data in order to test three hypotheses, respectively, the influ...
Autori: Iulia C. Terryn
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26981

In this study, Sick Building Syndrome (SBS) is surveyed in the residential buildings of Ekbatan, a district in the Western part of Tehran. A number of 330 individuals were selected randomly. It was investigated whether factors such as the physical conditions of the sampled buildings, occupation and lifestyle-related behavior such as smoking were associated with the intensification of irritation and mental symptoms. The symptoms of SBS were observed positive in 56.4% of the cases. The worst sy...
Autori: Amir Sheikhmohammadi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26998

The arsenic removal from aqueous medium was investigated through adsorption by employing finely powdered bark of Pinus roxburghii Sarg. The batch mode laboratory scale experiments were conducted to investigate the removal efficiency of Pinus bark against total arsenic and the effect of pH, contact time, adsorbent dose and initial adsorbate concentration on adsorption to optimize the process. Langmuir and Freundlich isotherms were used to validate the adsorption data and respective constants w...
Autori: Syed Hasnain Shah
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27013

Accidents in spent nuclear fuel reprocessing plants are a critical issue for the safety of people, of operators and the environment, as well as for the security of the plants. The purpose of this work is to demonstrate the possibility to use a free license code to simulate radiological diffusion after an accident in these particular plants, in order to obtain a model which allows identifying escape routes for the people potentially involved in the fallout. The authors performed a benchmark an...
Autori: Mariachiara Carestia
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27015

This paper presents the results of measurements related to the activity concentrations of 226Ra, 232Th and 40K in autoclaved aerated concrete (AAC) used as building materials for various constructions in Romania. Radiation index (I) and the hazard index (HI) were estimated to assess the risk arising from the usage of AAC materials. Our study considered various AAC samples produced by different companies, in 2015. The activity concentrations of 226Ra, 232Th and 40K were measured using by a gam...
Autori: Dorina Nicolina Isopescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27018

A biodegradable iron based alloy was obtained through classical melting method using a furnace with controlled atmosphere. The metallic material was obtained from high purity materials using a proper obtaining method. The material is proposed as an alternative to magnesium alloys that have a very fast degradation period for applications with longer healing periods (more than 3 and between 12 to 18 months). The material was analyzed using scanning electron microscopy (SEM) and X-ray dispersive...
Autori: Sergiu Stanciu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27023

Maghemite nanoparticles (γ-Fe2O3) were synthesized in order to be used as magnetic adsorbent for two heavy metals, Pb(II) and Zn(II), from aqueous solutions. γ-Fe2O3 was prepared from magnetite nanoparticles and was tested for single and binary aqueous solutions. Efficiency removal (%) for single solutions appears only after 10 minutes and was higher than 80%. In case of binary solutions, same results regarding efficiency removal were registered after 60 minutes, being almost 90% ...
Autori: Ecaterina Matei
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27029

Removal of Cd(II) from aqueous streams is of special concern because of its very high toxicity and persistent nature. The sorbents based on natural and waste materials have very promising performances in the treatment of Cd(II) contaminated waters. Very few reviews are available that provide valuable information on the various aspects of the utilization of natural and waste materials for Cd(II) metal ions removal. In this context, this review examines a wide range of materials as green sorben...
Autori: Lavinia Tofan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27033

Recently, environmental scientists have been focused their attention on the occurrence and the elimination of specific organic compounds in water. Among them, chlorophenols are considered to be a public health problem due to their carcinogenic properties. Thus, there is an important need to find new strategies to efficiently transform these compounds to no toxic or inactive by-products. In this work the photocatalytic removal of 2,4-dichlorophenol in water solution was investigated at laborat...
Autori: Lidia Favier
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27034

Renewable resources, biopolymers and bio-based materials are keywords of the sustainable development and environmental sustainability concepts. Biopolymers, the green alternatives to fossil fuel based polymers, have already found different feasible applications, from consumer goods to regenerative medicine. Keratin is the biopolymer contained in the skin derivatives and appendages and is one of the the proteins with the most sophisticated architecture nature could produce. It is found in huge...
Autori: Hossein Rajabinejad
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27043

Deforestation has been recognized as an important environmental threat in the hilly area of Eastern Romania during the last two centuries. Nowadays, these former forested lands are extremely degraded through soil erosion and gullying due to improper human impact. Under such background, the paper aims at reconstituting the natural forest cover of the late 18th century, prior the aggressive deforesting actions. The methodology is based on two key elements: old maps and soil typology, both integ...
Autori: Iulian Cătălin Stângă
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27062

This paper seeks to empirically examine the relationship between Environmental Activities (EA) included as part of Corporate Responsibility (CR), and corporate image, loyalty, and trust in the hotel sector. It also examines the impact of image on trust, and the impact of trust on loyalty. Data were collected from a sample of 134 customers of four four-star international hotels. The data were processed with PLS-Graph software, using structural equations to test the hypotheses. The findings rev...
Autori: Beatriz Palacios Florencio
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27070

Since the link between tourism and economic growth is not automatic, a country must meet certain characteristics in order for this link to occur and make it sustainable through time. Among these characteristics, environmental and sustainable policies, the existence of hard and soft infrastructure, a regulated labour market and economic and financial indicators play a key role. Therefore, Country Risk Score (CRS) can represent a good indicator of the sustainability of countries. Using Country ...
Autori: Roberto Cervelló-Royo
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27074

There is an increasing social and political awareness of the importance of the development of an environmental responsibility orientation among firms. However, despite a growing interest of environmental management research in Hospitality Industry in the last decade, there are still relevant topics that have not received sufficient attention yet. Research tends to focus on large companies almost neglecting Small and Medium-sized enterprises. Based on evidence from “The Eurobarometer 381...
Autori: Ángela González-Moreno
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27078

While the water quality issues in suburban watersheds have been greatly attributed to rapid urban development and stormwater runoff, pollution contribution from agricultural practices are still significant but often overlooked. The objective of this study is to assess water quality impacts of managing both agricultural and urban lands in a suburban watershed. Neshanic River watershed is a headwater watershed with mixed land uses located in Hunterdon County, New Jersey, USA. It has 40% of agr...
Autori: Zeyuan Qiu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27081

There is an extensive literature covering a number of considerations for installing noise barriers to protect living areas. In fact, noise barriers are the most popular mitigation measure on major roads across Europe. This paper aims to review some situations where the use of noise barriers is not fully recommended. Fortunately, there are available wide ranges of technical noise solutions as an alternative to the barriers. What we propose in this article is to create a simple procedure to hel...
Autori: Alina Mihaela Petrovici
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27088

In order to improve the soil fertility, several eco-friendly alternatives to traditional cultivation practices have been proposed. The use of biofertilizers, such as rhizobacteria with different plant growth promoting properties is an environmentally-friendly option to achieve sustainability in agriculture. In this context, two bacterial strains (Bacillus pumilus R3 and Pseudomonas lini R7) isolated from the rhizosphere of runner bean plants were assessed for their plant growth promoting abil...
Autori: Gabriela Mihalache
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27108

The aim of this study is to investigate an innovative way to utilize the char obtained from tyres pyrolysis, in order to realize lightweight materials for building. Pyrolysis residue, mixed with three types of waste glass, has been used as raw material to obtain lightweight materials, exploiting its capability to behave as foaming agent. The results demonstrate that the pyrolysis char is a good foaming agent for the mixtures 50/50 with glassy sand and packaging glass waste, thermal treated at...
Autori: Fernanda Andreola
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27119

We computed the Product Environmental Footprint (PEF) to identify the environmental performance of recycled wool by means of data belonging to a real case study in Italy. First, we analyzed inventory data quality by computing the data quality rating (DQR) index, according to the criteria provided by the PEF protocol. Quality of specific and generic data (selected from the Ecoinvent database) was evaluated as excellent and good, respectively. We then quantified the impacts related to each rele...
Autori: Silvia Bamonti
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27121

Sequencing Batch Biofilter Granular Reactors (SBBGRs) represent an innovative technology; coupling granular and attached biomass and operating in a batch mode. These systems allow good removal rates with low sludge production and space requirement. A particular application, consisting of an aeration unit and an upflow SBBGR in series, has been tested at pilot scale. The pilot system was installed at a conventional activated sludge plant and fed with average-strength urban wastewater after pre...
Autori: Paolo Cirello
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27123

This work was aimed to test the suitability of an epoxidized cardanol derived plasticizer for the production of soft PVC characterized by low environmental and toxicological impact soft PVC. Nowadays, the use of natural derived plasticizer in soft PVC industry is emerging as valid alternative towards conventional phthalate plasticizers, in order to reduce the environmental and toxicological impact of soft PVC. In facts, cardanol is a natural and renewable resource, characterized by a wide wor...
Autori: Antonio Greco
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27128

In this study, the potential for biogas production from biodegradable bioplastics was evaluated. Mater-Bi® (a family of maizestarch based flexible films) and PLA (PolyLactic Acid; a rigid, polylactide-based, polymer) bioplastics were digested in laboratory batch reactors, alone or in co-digestion with pig slurry or scotta (partially deproteinized cheese whey), at 35°C or 55°C. Methane (CH4) and hydrogen (H2) production were monitored during the incubation period. Maximum CH4 (Mmax...
Autori: Ciro Vasmara
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27134

Today, different tools are associated with environmental protection context, which ca include, among others: environmental programmes, objectives and targets, training, incentive schemes, audit frequency, site inspections, administration and community relations. The assessment of different aspects of environmental quality and protection, in a qualitative or quantitative manner is based on various indicators, addressing the three components of sustainability: economic, social, environmental. ...
Autori: Mihnea Costoiu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27163

Environmental problems that result from increases in the generation of urban solid waste are compounded by the inadequate management of wastes generated by large-scale meal production at Food and Nutrition Units (FNUs). With the growth of eating out sector, solid waste management of FNUs should be focused on minimizing waste generation, while considering all regulations enforced, including those related to hygienic quality of food. The goal of this study was to determine the quantities and t...
Autori: Jaqueline Zotesso
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27168

Hesperaloe funifera was studied as a new raw material for paper manufacturing and lignin recovery. An experimental design was carried out to improve the quality of the obtained pulp varying the process temperature (155, 170 and 185 ºC), time reaction (20, 40 and 60 minutes) and soda concentration (5, 10 and 15 %). All experiments were carried out with 1% anthraquinone. Lignin content, holocellulose content, α-cellulose, viscosity, Kappa number and drainability were determined in the d...
Autori: MŞ Ángeles de Andrés
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27185

In this paper we present the results of the long term survey of the low frequency (50 Hz÷ 20000 Hz) background magnetic induction (B) in some residential areas. Firstly, we present the triaxial measurement system proposed, realized and calibrated by authors, which has an uncertainty of about 5%. This instrument can make the automatic long term survey with the characterization of the magnetic fields, being adequate to estimate the human exposure. We used our instrument to perform both spot...
Autori: Ionuţ Nica
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27203

Any modern enterprise, with focus on marketing and management success have to be based on market principles, pursuing the main objectives, of increasing production and services in terms of sustainable development. In this context, rural tourism and agritourism, with a high rate in rural areas, is a major factor, with direct consequences on local development and meeting the consumption needs of tourists. There are several advantages of the agritourism which had been described previously such as: ...
Autori: Elena Leonte
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27206

Groundwater originating from two rural communities from Cluj and Bistrita Nasaud counties was analyzed using parallel ion chromatography, the focus being on major anions (chloride, nitrite, nitrate, phosphate and sulphate) and cations (potassium, sodium, ammonium, calcium and magnesium). These analytes were determined simultaneously using a Shimadzu two-channel instrument with non-suppressed conductivity detection, separations being carried out using an Allsep Anion 7u column and an Universal Ca...
Autori: Edward Muntean
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27211

The application of advanced oxidation processes (AOPs) emerged as an interesting topic during the last decade. Many studies have been devoted to the complexity of phenomena imposed by AOPs, and a lot of effort was made to justify the application of AOPs. However, the reliability of AOPs has not been an issue of any extensive work. In this work, failure analysis and comparative reliability study were performed for the chosen AOP system, i.e. a laboratory scale photo- and sonoreactor, during the p...
Autori: Ivana Grčić
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27220

In the present study, the effect of chitosan as an eco-friendly coagulant aid was investigated for removing turbidity (bentonite) and humic acid (HA) in the coagulation process. The effects of various operational parameters such as initial pH of the solution (4-9), dosage of chitosan (1-4.5 mg/L), dosage of alum (10-40 mg/L) and initial turbidity (10-150 NTU) were investigated. An artificial neural network (ANN) model was used to predict the performance of turbidity removal efficiencies by coagu...
Autori: Abdolmotaleb Seid Mohammadi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27223

Life Cycle Assessment (LCA) is a methodology that can be used to evaluate the environmental performance of municipal solid waste management systems (MSWMS). Despite of Waste Directive provisions, this methodology is insufficiently applied as a decision-support method able to identify the best option for the waste management in Romania. In this paper we applied LCA methodology to study of the municipal waste management system of Cluj County, supported by GaBi software. The aim of this study is to...
Autori: Gabriela-Emilia Popiţa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27225

In this research, Response Surface Methodology (RSM) was employed to optimize five operating variables including initial pH, current, reaction time, initial hexavalent chromium concentration and dosage of polyaluminum chloride as a coagulant for the removal of hexavalent chromium and its relative operating cost by electrocoagulation process. Central Composite Design (CCD) was applied for the optimization process. The results showed that increase of polyaluminum chloride dosage was beneficial for...
Autori: Sepideh Sadeghi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27230

The Strategic Environmental Assessment (SEA) is both a technical and administrative procedure with (mandatory) extensive application throughout Europe, holding a primary role in sustainable territorial development. Objectives of the SEA process are to: provide a high level of protection for the environment, and promote sustainability of development by contributing to the integration of appropriate environmental considerations in the adoption and implementation of specific plans and programs. In ...
Autori: Vincenzo Torretta
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27231

The effect of ceria content on the physicochemical properties and catalytic performance of nanostructured CeO2/Al2O3 for removal of toluene from waste gas stream was studied. The properties of the catalysts were addressed using XRD, FESEM, BET, TPR-H2 and FTIR techniques. XRD patterns confirmed the formation of CeO2 with average crystallite size of 7.8-8.7 nm. FESEM images confirmed the presence of fine particles between 25.2-189.1 nm. BET results showed that nanostructured CeO2/Al2O3 had high s...
Autori: Saeed Saedy
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27245

Developing countries have seriously low adoption rates of sustainable agricultural practices (SAPs) and there is a need to understand why. This paper reviews 31 past studies focusing on the factors influencing the adoption of SAPs. Using a vote count methodology, SAPs adoption is revealed as a complex set of behaviors which depend on a range of socio-economic, agro-ecological, institutional, informational, psychological factors and perceived attributes. Identified within these six dimensions, ma...
Autori: Yeong Sheng Tey
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27253

The Storm Water Flow (SWF) and the Dry Weather Flow (DWF) canals carry composite industrial and municipal effluent (nearly 50,000 m3 d-1) from Kolkata city. Wastewater from SWF and DWF canals is used for pisciculture at the East Calcutta Wetland (ECW) for nearly a century. A wastewater fed pisciculture pond was selected to study the efficiency of the pond in treatment of wastewater. Monthly changes of hydraulic variables viz. inflow and outflow rates, depth, hydraulic loading rates, detention ti...
Autori: Abhishek Roy Goswami
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27255

Non-availability of good quality water in sufficient quantities and the environmental impacts of used water discharges have led to the treatment and reuse of the aquaculture water contaminated with dissolved organics and ammonia rather than discharging it. This paper explores the effectiveness of in-situ sediment microbial fuel cell (MFC) for aquaculture water treatment along with generation of electricity. A sediment microbial fuel cell (SMFC) was designed and the efficiency of stainless steel ...
Autori: Thypparampil Karunakaran Sajana
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27261

This paper describes laboratory experiments conducted to investigate groundwater flow and solute transport within the capillary fringe (CF) and exchanges between the CF and the region below the water-table. An experimental bench was developed in order to simulate an unconfined aquifer, to observe the development of the CF and to study nitrates transfer from groundwater to CF, and also the fate of nitrates into the CF. The experimental bench has three compartments, the middle one being filled wi...
Autori: Mihaela Amalia Diminescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27277

Water quality is a very important aspect in the perspective of durable, urban and rural development. At European level, several directives were implemented, with the purpose of regulating the degree of pollution for water sources. Both surface and underground water resources in Romania are being affected by pollutants, such as nitrites, phosphorus, generated through irrational usage of chemical fertilizers, but also through the discharge of urban waste water directly into river courses. The spat...
Autori: Andrei Enea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27280

The paper discusses the pollution status in the case of an important NE Romanian watercourse (Siret River) in Pascani town area based on the analysis of some water quality indicators (pH, temperature, dissolved oxygen, organics (COD and BOD5), conductivity, fixed residues, nitrogen-based nutrients (N-NH4+, N-NO3-, N-NO2-), phosphates, total phosphorus (P), total calcium (Ca2+), magnesium (Mg2+), iron (Fe2+, Fe3+), turbidity and suspended solids content) measured at three local strategic control ...
Autori: Carmen Zaharia
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27281

The Amara Lake is located at the south-eastern part of Romania. It is a shallow lake with an average depth of 3m and average extent of 1.32 km2, having a particular importance for the area in which is situated. This importance derives from its main functions in the ecosystem, namely: source of food, shelter and breeding place for almost 54 bird, balneary tourism attraction and jobs for the residents of Amara who live in the northern part of the lake. Under these conditions, the sustainable devel...
Autori: Ofelia Axinte
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27282

The paper is focused on the sustainability of packages manufactured from corrugated board. The arguments proving that corrugated board is an eco-friendly material intended for goods packaging are discussed considering carbon footprint, water footprint, Life Cycle data released as a result of comprehensive analyses elaborated by specialized bodies and scientists. A “cradle-to-cradle” approach is promoted since corrugated board is fully recyclable, it is reusable and easy disposable. M...
Autori: Teofil Câmpean
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27290

The present paper focuses on the environmental pillar of a new and innovative framework for sustainability assessment of VET - Vocational Education and Training - providers. By employing case study methods on a research sample of 6 VET providers in the Mures County, Romania, we have determined the sustainable development challenges that VET providers face. The results are used to elaborate the core subjects of the framework in accordance with existing practices at VET providers. The framework is...
Autori: Liviu Moldovan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27294

According to literature, aggregate stability of soils is influenced by: particle size and soil texture, soil structure, content of Ca2+ and Mg2+, mineral clay type, soil content of organic matter, soil processing degree. This paper aims to investigate the influence of some physical, microbiological and chemical properties of saline soil concerning water-stable aggregate. The hydro system stability of the aggregates appears in the specialized studies as having a positive correlation with microorg...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27300

Ground water is an important source of clean water supply throughout the world. A growing literature on the management of groundwater which takes into account the interaction of groundwater with surface water resupply sources (e.g., streams or lakes) is driven by concerns of intensified global fresh-water use coupled with increasing industrial and agricultural pollution levels. Our joint laboratory and numerical experiments simulate water withdrawals via two pumping wells from an unconfined aqui...
Autori: Anca Marina Marinov
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27302

The present work illustrates the results of a long-term field experiment with sewage sludge used on agricultural land in order to assess the influence of sewage sludge on wheat crop productivity. The experimental research was conducted for three years as following: the evaluation of the agricultural use of sewage sludge in the year of application and its residual effect in grain and in soil for the next two years. The sewage sludge considered in the framework of the study was from Sfantu Gheorgh...
Autori: Diana Mariana Cocarta
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27303

Climate and environmental conditions primarily affect the yield and quality of agricultural products. Turkey’s environment shows different characteristics between regions because of the position of the Turkey in the World. In the agricultural product industry, different techniques are used to measure the physical properties (diameter) of the agricultural products to determine the effect of the climatic difference between regions on the quality of goods. Many factors affect the classificati...
Autori: Metin Dağtekin
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27308

The purpose of this paper is to integrate recent results on the remediation of organic contaminated soils, and introduce a physical remediation method—thermal desorption technology. There are mainly four kinds of thermal desorption technology, which include rotary kiln, fluidized bed, microwave and vacuum strengthen far-infrared thermal desorption. Through comparing with four kinds of remediation methods, rotary kiln and fluidized bed are more mature technologies, which have high treatment...
Autori: Zhongxin Tan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27310

Considering the actual environmental issues, the waste management has become a major challenge in Europe and worldwide. Recycling the waste into sustainable products can be an alternative to landfill with positive effects on the costs and environmental pollution. In this respect, in the last years numerous studies and research emphasize the utilization of different type of waste to obtain materials for building applications. The aim of this paper is to assess the effect of using sewage sludge ge...
Autori: Petronela Nechita
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27315

In this paper we address Corporate Social Responsibility (CSR) as a competitive factor in textile and fashion value chain. CSR assumes a large range of activities focused on one or multiple targets, from work conditions to social programs, or environmental impact. The influence of CSR strategies on market performance depend on how truthful consumers will understand and believe to be the values offered by companies. The qualitative research has considered seven case studies from Portuguese textil...
Autori: Graça Guedes
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27316

This study considers the removal of diclofenac (an important representative of pharmaceuticals and personal care products - PPCPs) from the secondary effluents of Iasi municipal wastewater treatment plant by means of different advanced oxidation processes (homogeneous Fenton, photo-Fenton and photolysis), carried out in a laboratory scale reaction system. The influence of three qualitative or quantitative factors (Fe3+ concentration, the absence/presence of UV-A radiation and H2O2) was studied i...
Autori: Cezar Catrinescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27322

Chlorophenols, commonly found in industrial effluents, are considered as priority pollutants because they may cause severe environmental impacts and human health related problems. Nanofiltration (NF) represents an important option for the removal of chlorophenols present in aqueous effluents. This study presents some results on the performance of nanofiltration for the removal of 4-chlorophenol and 2,4-dichlorophenol from synthetic wastewaters considering the selection of adequate operating and ...
Autori: Corina-Petronela Musteret
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27324

The remarkable photocatalytic properties of titanium dioxide and the high adsorption capacity of the mesoporous materials were combined to obtain active photocatalysts for the decomposition of Rhodamine 6G dye. The mesoporous TiO2 was obtained by the controlled hydrolysis-condensation of titanium isopropoxide, using hexadecyl-trimethyl-ammonium bromide as template, followed by calcination to remove the organic matter. Subsequently, this sample was doped with sodium wolframate and platinum. T...
Autori: Doina Lutic
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27325

To evaluate the effects of seasonal fluctuations, soil types, land use and management inputs on the abundance and composition of soil bacteria, twenty soils types from Moldavia region located in north-eastern Romania were compared. Changes in soil microbiota are an early and sensitive indicator of soil pollution and can be used to predict long-term trends in soil quality. The use of microbial properties as indicator of soil pollution is easily measured and can also be measured accurately across ...
Autori: Eugen Ulea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27333

Risk management forecasts those situations that can damage the proposed goals or jeopardize the completion of projects in time. The aim of this paper is to highlight risk management tailored practices for pavement roads maintenance projects. All presented practices and risk management analysis are consistent with international standards, processes and assets. Present work also describes a particular analysis and prioritization of risk factors for their implementation in a web application. For ri...
Autori: Dan Benta
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27340

The global renewable energy share should reach and exceed 30% by 2030. Mini-scale hydropower installations are environmentally-friendly technologies, unlike large hydroelectric power plants that have certain drawbacks from the environmental point of view. A safe and clean solution is the cross-flow turbine, but the commercial types require a minimum head, usually captured by additional hydro-technical works that can also damage the environment. In this context, a very good solution could be a lo...
Autori: Daniela Popescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27343

Environmental education is an important field of study at the university level and also in the framework of adult education. Awareness about the environmental issues at global level is becoming increasingly important for the new society, representing one of the most significant factors for ensuring sustainability. In this respect, a number of European programs are addressed to the people willing to develop projects on this topic, aiming to stimulate the mobility of the involved staff, in order t...
Autori: Madlena Nen
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27345

Deforestation is a vital problem at global level, being one of the main causes of climate change. Volume of wood used in construction, furniture and pulp and paper industries increases year by year. Stopping the decrease of forests surface is of imperative importance from the point of view of sustainability. Pulp and paper industry faces with severe lack of pulpwood and for this reason other raw materials are taken into consideration. Chemical pulp can be partially replaced with recovered paper ...
Autori: Adrian Cătălin Puiţel
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27348

This paper displays the results of the studies obtained according to the tests performed within INSEMEX explosives testing facilities, which concerns the establishing, on scientific grounds, of a procedure system of assessing the safety parameters for explosive charges used in fire-damp hazard mines, with a view to observe labour safety and health requirements while resorting to the safe and efficient rock blasting with explosives. As important results, it should be underlined the fact that the...
Autori: Attila Kovacs
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27356

Explosion-proof equipment must be designed so that the ignition of the surrounding explosive atmosphere to be avoided. This is very important because an explosion can have particular implications over goods, life and not least over the environment. One of the ignition sources of an explosive atmosphere is represented by hot surfaces. Each equipment designed to operate in explosive atmospheres develops a maximum surface temperature. The specific standards used to assess explosion protection chara...
Autori: Lucian Moldovan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27358

Drilling waste management for oil and gas industry involves collection, transportation, processing, recycling, disposal, and monitoring of waste materials in order to reduce their effects on health and environment. In the Exploration and Production industry, environmental concerns have made effective management of drilling waste at well sites a great priority. Effective waste management is thus a key element in a successful drilling project. The industry therefore relies on effective expertise a...
Autori: M. Enamul Hossain
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27375

The monomer with ketimine side group, 2-(1-(benzylimino)ethyl)phenol (2-BEP), was synthesized from the condensation of 2- hydroxyacetophenone and benzyl amine. The enzymatic oxidative polymerization of 2-BEP was performed in the presence of hydrogen peroxide using horseradish peroxidase (HRP) as catalyst. The oxidation reaction was carried out in various solvents and phosphate buffers at room temperature. These studies have shown that a dark brown polymer was successfully synthesized by utilizin...
Autori: Senem Tapan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27377

The electronic waste (e-waste) is increasingly flooding Asia, especially in developing countries. E-waste could precipitate a growing volume of toxic input to the local environment if it was not handled properly. This brings the evaluation of environmental impact from electronics an essentially important task for the life cycle assessment (LCA) and the end-of-life management of electronic products. This case study presented a quantitative investigation on the environmental impact analysis on ele...
Autori: Srivalli Chellvarajoo
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27384

Chemical precipitation is an effective and relatively low cost method for removal of heavy metals. The removal of lead ions from wastewater by a precipitation process was investigated using sodium sulfide and sodium carbonate. Precipitation experiments were performed using storage battery wastewater with lead concentration of 8.8 mg/L and synthetic wastewater with different lead concentration ranging from 5 to 600 mg/L. A series of experiments (each concentration) were carried out under differen...
Autori: Mehraban Sadeghi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27388

Because of increased environmental consciousness, pollution emissions reduction has been stressed by more and more governments these days, and the environmental management system (EMS) has become one approach for many firms to comply with environmental regulations. However, with rapidly changing technologies along with increasingly complicated environments, how to select a suitable EMS project has become an important issue that has never been discussed comprehensively. First, tolerating vague a...
Autori: Hsing Hung Chen
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27391

The research work aimed at analysing the drinking water quality in Vilanculos (Mozambique) and at investigating the influence of poor sanitation management on drinking water quality. The purpose was to understand the reasons of water source contamination and re-contamination in the water supply chain, in order to define strategies to control source contamination and to suggest practical ways for reducing the risk of recontamination. A first phase of microbiological drinking water quality monito...
Autori: Silvia Gibellini
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27406

Two montmorillonitic clays were modified with N-(methoxy-polyethylene glycol) ethylene diamine and tested as sorbents for removal of Rare Earths (REs) from aqueous solutions. Lanthanum was chosen as representing element of REs family and adsorption tests were performed with the aim of selecting a system with good uptake efficiency for the pollutant abatement in wastewaters. The effects of pH were studied and the properties of the obtained final materials were evaluated with simple model syst...
Autori: Elena Maria Iannicelli-Zubiani
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27408

The anaerobic digestion (AD) of fat-containing waste is often prolonged in time and problematic. Differences in AD performances could rely in a different probability for microorganisms to access the substrate. The aim of this study was to study the AD of waste cooking oil (WCO) with a biophysical approach. Two laboratory experiments were carried out using model systems consisting of WCO + hydration medium (HM) in 100 mL, static, in-batch reactors. In the first experiment, we assumed the WCO to H...
Autori: Francesca Fiume
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27409

The transport of both goods and passengers notably influences air quality. If strong decisions by the governments will not be taken, oil consumption for transport will be nearly doubled in 2030 if compared with 2000, thus considerably increasing the atmospheric presence of greenhouse gases. To boost the purchase of alternatively supplied cars would avoid serious, if not catastrophic, climatic changes. Our investigation shows what the situation is concerning new cars sold by SINA, an official ...
Autori: Veronica Novelli
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27411

Sharing economy business experiences are rapidly rising worldwide and deeply changing structures and models of customers purchasing attitudes and needs. Inspired by principles of sustainable consumption, its starting point is the idea that every underutilized resource is a wasted resource. Beyond the digital services implemented by sharing platform, there are also social and physical places where communities are experimenting the potential of collaborative and innovative solutions: purchasing...
Autori: Paola Sposato
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27417

This study was conducted to evaluate the cyanide removal efficiency by coupled process of Fenton and coagulation/precipitation from aqueous solution. The study was performed at laboratory scale in a batch system. Variations of pH, Fenton and precipitation reagents (molar ratios of Fe2+/H2O2 and ferric chloride), contact time and initial concentration of cyanide were investigated, and the optimum conditions obtained from each of the Fenton and precipitation processes were followed in the coupl...
Autori: Ahmad Jonidi Jafari
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27426

Cascade dams alter the movement and accumulation of heavy metals in sediments along the river continuum. 27 sample crosssections were taken in July 2011 from the Xiaowan, Manwan, and Dachaoshan dams in the middle reach of the Mekong River in southern China and analyzed for content of heavy metal (Zn, Cr, Pb, As, Cu, Ni, and Cd) concentrations in the dammed river reach. There were evident spatial variations of the heavy metal concentrations downstream and upstream of the three cascade dams; t...
Autori: Li Deng
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27436

Soil erosion by water, sediment transport, sediment deposition and their impact on watershed area are complex processes. Therefore, the state of theoretical knowledge and mathematical modeling of them are still in an incipient phase. Most of the existing mathematical models are based on relations obtained either experimentally or in laboratory conditions, either in situ or physical models; because of existence of multitude factors involved in these processes and influence each other. These m...
Autori: Erika Beilicci
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27449

Considering that glass containers are generally highly transparent they are good candidates for spectroscopic measurements and application of a transmittance for glass separation. The selection of glass container samples directly from municipal waste disposal bins, characterized by different colors, thicknesses, and shapes was done. Transmittance spectra of clear, green, amber and black clean glass containers were recorded, along with spectra of the usual bottled liquids. Positions of the absorp...
Autori: Dragana D. Strbac
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27452

In this study, the adsorption of Cu(II) ions on the uncalcined and calcined nanocrystalline hydroxyapatites was investigated. The nanohydroxyapatites were prepared by wet coprecipitation method and their physicochemical properties were investigated using XRD, BET and SEM-EDX analysis. The uncalcined and calcined hydroxyapatite samples have crystal sizes smaller than 100 nm and a specific surface area of 325 m2/g and 69 m2/g, respectively. The effects of solution pH, adsorbent dose, initial solut...
Autori: Ana Maria Mateiuc
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27464

In recent years, increasing temperatures and extreme weather conditions have had a significant impact on quality of life, especially in terms of the environment. Governments have made environmental preservation a priority and have received public support in turn. We formulate models to investigate a company’s optimal production quantities over two periods, including green technology efforts, to examine the impact of a carbon trading policy. We build separate inter-temporal production mode...
Autori: Changsong Ma
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27469

An apatitic calcium phosphate gel (HaG) was elaborated and used to treat municipal wastewater in a physicochemical cycle prior to the standard biological degradation process. Preliminary laboratory batch experiments outlined the kinetics of heavy metal sorption by monitoring the concentrations found in filtered fractions as a function of treatment time. On site experiments were performed in a municipal wastewater treatment plant by derivation of real wastewater into an experimental tank. In this...
Autori: Nathalie Lyczko
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27488

The Vrancea seismogenic area, located at the South-Eastern Carpathians in Romania, is generating extreme destructive subcrustal earthquakes in Europe. The largest events generated in the last ten years in the Vrancea subcrustal domain occurred on May 14, 2005 (01:53, 45.64oN, 26.53oE, h=149 km, Mw = 5.5), April 25, 2009 (17:18, 45.68oN, 26.62oE, h=110 km, Mw = 5.4) and October 6, 2013 (01:37, 45.67oN, 26.58oE, h=135 km, Mw = 5.2). The purpose of the present paper is to determine the seismic ...
Autori: Mircea Radulian
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27492

Nowadays, the polyolefins (polyethylene, polypropylene) are increasingly consumed in large amounts for many applications. This issue causes a concern regarding the environmental impact of the waste materials generated after the first use. Mechanical recycling of polyolefin wastes helps to conserve oil and gas resources and reduce the polymeric waste accumulation in environment. In this paper, the modification of some post-consumer polypropylene (rPP) properties coming from packaging processi...
Autori: Maria Râpă
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27493

This paper highlights the utility of rice husk ash for the adsorption of Cr(VI) ions from aqueous solutions. Rice husk ash (RHA) is produced when rice husk is burnt for various purposes. Application of Treated Rice Husk Ash (TRHA) as an adsorbent for the removal of Cr(VI) from aqueous solutions has been investigated. For this purpose, RHA was thermally treated. RHA and treated RHA (TRHA) were characterized by XRD, SEM and FTIR to investigate the effect of treatment on the nature and surface char...
Autori: Varsha Srivastava
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27504

Protected areas are valuable ecosystems standpoint providing various ecological processes and functions. Unfortunately, during the recent decades, population growth and human development have been changed the land use/land cover of the most protected areas in the world. Varjin Protected Area is one of the oldest protected areas. In this study, landscape metrics were used to reveal landscape patterns in Varjin Protected Area using Landsat satellite imagery from 1986, 2000 and 2010. For this purpo...
Autori: Shirkou Jaafari
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27512

This work describes the variations in nitrogen (N) and phosphorus (P) removal performances and bacterial population dynamics in response to different influent C/N and C/P ratios in a novel BNR-IC process combining biological nutrients removal (BNR) with induced crystallization (IC). A good nutrients removal performance was achieved at 7.8 of C/N ratio and 23.3 of C/P ratio, where P and TN removal efficiencies were 94.0±2.4% and 90.5±4.3%, respectively. Moreover, significant changes...
Autori: Haiming Zou
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27523

Irrigation is an increasingly important practice for sustainable agriculture. Water reuse as refined or non-refined wastewater can help agroecosystem productivity. Contaminated water may influence seed germination. Two experiments as laboratory and pot were carried out to assess impact of different levels of laundry detergent and water stress on seed germination and early growth in maize. At the laboratory experiment, seeds were treated with solutions of 0, -0.01, -0.09, -0.6 MPa polyethylene gl...
Autori: Hassan Heidari
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27527

Recently, the studies about vitamin B12 increased due to the high number of people who can develop vitamin B12 deficiency, namely: vegetarians, pregnant women or with vitamin B12 malabsorption. One solution to correct the low nutritional intake of vitamin B12 can be using food supplements or pharmaceuticals, based on the vitamin B12 microencapsulation. In the present research, the vitamin B12 microencapsulation and the controlled release of fresh and 4 months’ storage samples of vitamin B1...
Autori: Ioana C. Carlan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27559

In recent years the organizations’ has gone from resource-based economy to a knowledge based economy. Likewise the organizations’ success in this turbulent environment depends on its sustainable orientation which implies integration of various management practices. Such a management practices considered to be a driving force to sustainable development are environmental management system (EMS) and knowledge acquisition. In this context, it’s required to measure the organizationa...
Autori: Daniela Geanina Luca Cososchi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27567

According to EU Strategy for the Baltic Sea Region, Lithuania obligates to ensure sustainable growth, gain and maintain good condition of marine environment until 2020. In accordance with the sustainability approach, every potential cost and energy cutting as well as social sustainability measure for wastewater treatment should be explored. Nonetheless, Lithuania wastewater treatment plants (WWTP) in the sustainability context have never been evaluated before. A comprehensive set of 30 sustainab...
Autori: László Gyenge
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27578

According to EU Strategy for the Baltic Sea Region, Lithuania has to ensure sustainable growth, gain and maintain good condition of marine environment until 2020. In accordance with the sustainability approach, every potential cost and energy cutting as well as social sustainability measure for wastewater treatment should be explored. Nonetheless, Lithuania wastewater treatment plants (WWTP) in the sustainability context have never been evaluated before. A comprehensive set of 30 sustainable dev...
Autori: Jolanta Dvarionienė
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27583

The influence of the active compound of Moringa oleifera Lam (MO) seeds was evaluated by different methods for the preparation of the natural coagulant in the treatment of surface water. Nine methods were analyzed, comprising samples of seed powder with different granulometry, aqueous and saline solutions, evaluated before and after oil extraction from MO seeds. Tests of coagulation/flocculation and sedimentation were accomplished using simple Jar Test. Natural coagulant dose of 50 mg.L-1 identi...
Autori: Karina Cardoso Valverde
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27588

This work evaluates the effect of 5 mixtures of water treatment sludge, soil from the Cerrado region (Brazil) and a commercial substrate on the growth of 4 species of native plants (Copaifera langsdorffii, Astronium fraxinifolium, Peltophorum dubium and Tabebuia roseo-alba) from the Brazilian Cerrado. A randomized design was setup with four repetitions and WTS loading rates of 0, 204, 417, 638 and 869 g/kg. Plant sampling for analysis was performed at 30, 60, 90, 120 and 150 days after planting,...
Autori: Paulo Scalize
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27593

The paper presents a case study of a significant intervention conducted on a major Italian airport for improving the structural and functional properties of the runway safety STRIP in order to fulfill specific national and international standards. The STRIP had to accomplish strict requirements in terms of the maximum longitudinal and transversal terrain slope and minimum values of bearing capacity; in particular, soil bearing capacity was identified as the main lack and thus the most urgent ac...
Autori: Maurizio Crispino
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27603

In order to investigate the influence of coal macerals on biomethane production, two types of coal samples were collected respectively from Malan mine in Gujiao and Shaqu mine in Liulin, Shanxi. The vitrinite, inertinite and liptinite were separated by the methods of hand picking and float-and-sink test. Meanwhile, biomethane production experiments using the raw coal samples, vitrinite-rich coal samples, inertinite-rich coal samples as substrates were carried out in the laboratory. Finally, the ...
Autori: Hongyu Guo
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27620

The link between the concentration of biodegradable organic matter and the rate of phenol removal in anaerobic conditions was examined in this work. This study was undertaken using a laboratory scale anaerobic stabilization pond and five closed reactors at two retention times, 2 and 5 days. The initial concentration of phenol and soluble COD decreased in the anaerobic pond effluent and the reactors with increasing hydraulic retention time; 98.6 % phenol removal was observed in reactors after 50 ...
Autori: Ali Almasi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27623

Polycyclic aromatic hydrocarbons (PAHs) are very hazardous compounds. This investigation is the third in a series of three experiments carried out in conventional wastewater treatment plants with regard to PAHs. The first experiment regarded the analysis of PAHs in a municipal wastewater sewage system and in the wastewater treatment plant (WWTP) effluent, followed by a comparison between the observed removal efficiency and FATE model (US-EPA) predictions. The second experiment was carried out in...
Autori: Vincenzo Torretta
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27629

The growth of a non-axenic Phormidium bigranulatum-dominated mat was tested under a range of chemical parameters and types of substrate. Total biomass yield (in term of mg chlorophyll a) of mats grown on muslin cloth (0.64 mg) and cotton mesh (0.62 mg) were significantly higher than those on other substrates, such as, nylon net (0.50 mg), sands of river Sone (0.43 mg) and river Ganga (0.30 mg), rice husk (0.38 mg) and saw dust (0.21 mg). The Phormidium mat would be easy to handle in bioremdation...
Autori: Dhananjay Kumar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27635

In this study, a soil washing process in the presence of a nonionic surfactant solution of Tween 80 or Triton X-100 was investigated. Sandy soil was contaminated in the laboratory with naphthalene (10 mg/kg and 5000 mg/kg) and anthracene (25 mg/kg and 200 mg/kg), then washed with surfactant solution. A preliminary water washing step showed the performance of water in the removal of the two polycyclic aromatic hydrocarbons (PAH), especially naphthalene. The effect of Tween 80 and Triton X-100 was...
Autori: Razika Khalladi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27637

The paper describes the main results from a study of cement bound mixtures for road foundations with the aggregate matrix consisting of industrial wastes, i.e. foundry sands (FS), electric arc furnace (EAF) steel slags and bottom ash from municipal solid waste incineration (MSWI), combined in five different proportions. The laboratory investigation involved a preliminary analysis of the chemical, leaching, physical and mechanical properties of the industrial wastes, followed by a mechanical char...
Autori: Marco Pasetoo
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27645

Inadequate sanitation and poor infrastructure for waterborne sanitation are common in many developing countries. The anaerobic/aerobic baffled reactor (AABR) is a sustainable option for water sanitation in developing countries. In the present study, a 2.50 m3 AABR reactor working with real municipal wastewater was monitored. Four sequenced chambers, the first three being anaerobic and the fourth aerobic composed the AABR reactor. AABR efficiency and performance were examined during four diff...
Autori: Gustavo Henrique Ribeiro da Silva
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27656

The main objective of this research was to evaluate the environmental impact generated by municipal solid waste during its collection, transportation, treatment and processing in the south-west region of the department of Norte de Santander, Colombia, by means of Life Cycle Assessment (LCA). Three strategies for waste management were considered: the current baseline situation, wherein 100% solid waste was taken to the landfill; plus, an optimistic and a pessimistic scenario in which solid was...
Autori: Oscar Orlando Ortiz-Rodriguez
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27665

Timber harvesting activity represents one of the major sources of the forest terrain erosion. Several studies have been performed in order to quantify the rate of soils erosion by considering the practices used in forestry, and some of them concluded that the associated erosion can be regarded as the price of having roads. The current study focused on the used practices in developing skidding trails and the associated erosion phenomena. There was found that some of the used practices (the lon...
Autori: Cristian Ionuţ Duţă
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27673

Leakage through flaws in geofilm was examined with laboratory tests by flexible wall permeameter. Samples cracks were cut open by the sharp blade, with the results that the widths of the flaws were the same while the lengths were different. During the research, a series of laboratory permeameter tests have been performed to determine the influence of the various factors on the leakage rate of water through the flaw at the center of geofilm. The impact of various parameters examined included t...
Autori: Guangwei Zhang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27674

One of the main challenges for the development of biomass algal system production is the high operational and capital costs for these technologies. A great opportunity to overcome these challenges may however exist in the integration of wastewater treatment with algal biomass production. The algae are used for treatment of industrial wastewater, for purification of effluent originating from livestock production, while the studies concerning the use of algae species for the treatment of aquacultu...
Autori: Katya Velichkova
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27684

Adsorption, desorption, and kinetics behavior of Gd(III) ion on chelating resin were investigated in this paper. Batch adsorption studies were carried out with different pH, contact time, and temperature. The adsorption of Gd(III) follows the Langmuir model better than the Freundlich model. The apparent activation energy Ea and adsorption rate constant are k308 4.16 kJ/mol and 6.01×10-5 s-1, respectively. Thermodynamic parameters such as ΔH, ΔS and ΔG indicated that Gd(II...
Autori: Leilei Pi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27688

Industrial wastewater is of particular importance. In most wastewater treatments, physicochemical parameters are used to determine the performances which are costly while protozoa can be used as less expensive biological indicators to determine the efficiency of the treatment plant. The purpose of this study was to investigate the relationship between protozoa and physic-chemical characteristics of the Abadan wastewater treatment industry. Samples were collected from wastewater stabilization po...
Autori: Abotaleb Bay
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27694

The presence of nitrogen in its reduced forms serves as an indicator of natural aquatic system degradation. The excessive concentrations of nitrogen in reduced forms (NH4+, NO2-) found in the sections of the the Shireutsi (of the Prut River) and the Olaneshti (of the Nistru River) prove that these sites are areas to focus efforts on improving water quality. Laboratory simulations indicate a good environmental buffer action of natural waters to potential pollution in Sculeni and Ungheni sections ...
Autori: Petru Spataru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27698

This paper aims to identify the influencing factors of the acceptable amount of compensation (AAC) of farmers for controlling fertilizer-induced water pollution, and build a valid ecological compensation mechanism to curb the water impact. To this end, the ecological compensation for farmers is viewed as a good way to reduce fertilizer-induced pollution at drinking water sources, and the opportunity cost is introduced into the discussion of farmers’ AAC. To avoid the gaps of previous studi...
Autori: Jie Lin
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27781

The quantification of heavy metals in dry and wet weather derived (runoff and snowfall) sediment from roads, under three different environmental conditions, has indeed the potential to allow improved understanding on urban diffuse pollution. With that aim, the reported study determined the concentrations of Cd, Cu, Pb, Ni, Cr and Zn in road sediment, which are reported to be found in elevated level in the road-traffic environment, and associated pollution levels at four different sites, represen...
Autori: Sudip K. Pal
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27776

The aim of this paper is to show the results of two methodological approaches applied for decontamination of the Midia Port dredged sediment to assess their potential reusability. Firstly, the sediment samples were defined in physical, chemical, microbiological and ecotoxicological terms. The results were compared to the limit values established by environmental regulations for dredged sediment management. Some sediment samples exposed a very high concentration of hydrocarbons; the sediments wer...
Autori: Irina Catianis
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27770

Influence of soil pH on the mechanical characteristics of glass reinforced plastic (GRP) pipes type was often investigated in different situations encountered in the field. GRP degradation is directly proportional to the exposure to soil with non-neutral reaction. The theoretical and experimental results lead during time to design standards, which allow the application of GRP pipes in water and soil, so as minimum interferences with the materials used in the manufacture of pipes would appear. Sa...
Autori: Ana Diana Ancas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27768

The probabilistic estimation and the risk analysis of the exposure to pesticides through the ingestion of plants and food products is an important task for ensuring informed decision making and appropriate consumer protection. Monte Carlo-based methods are powerful tools in this regard, allowing for the empirical estimation of the distribution of exposure values, as well as for carrying out a corresponding uncertainty analysis. Such findings are important for assessing the exposure risk for mult...
Autori: Petronela Cozma
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27754

A study was conducted to determine the composition and concentration of trace metals in suspended particulate matter (PM10) and indoor dust in two academic buildings of Universiti KebangsaanMalaysia. One building was in the final phases of renovation (UR) and the other building had just finished renovation (AR). PM10 sampling of air was performed using a low volume sampler (LVS), and samples of indoor dust were obtained using a brush and a small plastic bag. The compositions of trace metals in b...
Autori: Mohd Talib Latif
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27758

Debris from deciduous trees in the form of park green waste was investigated as a potential biosorbent for the removal of chlorinated solvents from water. The sorption properties of beech leaves and cupules, oak leaves and acorns, birch leaves and lime leaves (all tree species common for a moderate climate) in a non-modified form were investigated with regard to the removal of perchloroethylene, 1,1,2-trichloroethane and 1,1,1,2-tetrachlorothane. The preliminary results showed that these biosorb...
Autori: Marek Tobiszewski
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27760

Indoor environment significantly affects occupants’ health and productivity. However, in smart buildings and cities, it can be improved thanks to the implementation of innovative ICT systems and services. Thermal comfort is one of the most complex aspects to be considered to enhance occupants’ well-being, because of the relevant role played by subjective parameters (physiological, psychological and cultural) in its evaluation. This challenge can be tackled by integrating wearable dev...
Autori: Andrea Calvaresi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27783

In the light of water shortages, frequently affecting many regions worldwide, domestic rainwater harvesting, and greywater reuse systems represent an alternative source of water. This study fits this framework providing a hydraulic/hydrological model developed by means of the EPA’s Storm Water Management Model. The model has been applied to a case study, which consists of an apartment building located in the city of Bologna and equipped with a hybrid rainwater-greywater recycling system. C...
Autori: Sara Simona Cipolla
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27789

Recently, more and more companies are implementing good environmental practices. Environmental certifications, besides being valuable management tools for companies, given the opportunity to strengthen their role on the market. An example of such virtuous behavior is the case of Valcucine, an enterprise of the Livenza furniture district in Northern Italy. Valcucine focuses its care in the production of furniture, in particular of kitchen units, characterized by sustainable production, eco-compat...
Autori: Veronica Novelli
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27797

The research has been focused on concretes in which the continuous phase is some kind of polymeric resin and the discrete phase is some type of mineral aggregate. Such composite materials are known as Polymer concretes (PC) and boast several advantages such as lower weights, higher resistance to corrosive environments and chemical attacks, faster curing and lower permeabilities. In PC the inorganic fraction can reach up to 90% of the total and is made up of aggregates such as sand and gravel. Th...
Autori: Paolo Pozzi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27799

This paper exposes the research activities regarding REBAF (Energetic Recover of River Biomasses) project, focused on the maintenance operations self-sustainability of the Secchia river (Italy). Poplar was found as the most abundant and representative wood plant of Secchia riverbanks, with a good behavior during gasification process: from 1 hectare of maintenance every three year, it was possible to produce 23 MWh of electrical power and 31 MWh of thermal power. The biochar obtained was characte...
Autori: Vittorio Vezzali
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27804

Activated sludge (AS) is the mainly used biological process in water treatment; therefore, assessing the influence of various operating conditions on this process is relevant. This study aimed to evaluate at laboratory-scale the influence of the gas-to-liquid volume ratio (RG/L) and the stirring speed (SS) on the biodegradation of carbamazepine (CBZ) by activated sludge. For this purpose, a central composite design (CCD) was used in association with response surface methodology (RSM). Batch cult...
Autori: Samer Semrany
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27869

Hepatitis A virus (HAV) is well known as a major public health problem, with a high index of occurrence especially in regions and environments with poor sanitation and water quality. From a biochemical viewpoint, acute hepatitis A virus infection is revealed by the considerably elevated serum transaminase levels and by bilirubin metabolism disorders, since it may often be clinically asymptomatic. Our paper is aimed at analyzing the evolution and significance of biochemistry tests for this type o...
Autori: Andrei Vâță
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27860

The aim of this paper was to investigate the possibility of incorporation non-metal fraction (NMF) in concrete products as a substitute for aggregate on industrial scale, while other studies are mostly based on NMF incorporation in concrete only on laboratory scale. Mineral filler was supplemented with 5, 10, 15 and 20 wt.% NMF from waste printed circuit boards (WPCBs) and its influence on concrete quality was assessed based on compressive and tensile strength conducted on laboratory and indust...
Autori: Vitomir Premur
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27857

Tunisian fish-processing industries generates large amounts of by-products. Their disposal is an increasing environmental and health problem. For an economic utilization, these by-products may be used in producing higher value-added products such as protein hydrolyzates. In this study, protein hydrolyzates with different degrees of hydrolysis (12%, 20% and 26%) were prepared from heads and viscera of Sardinella aurita using crude protease of Bacillus licheniformis NH1. The obtained hydrolyzates ...
Autori: Nabil Souissi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27852

In this paper, an improved engineering model and analysis techniques are presented of the fly ash particles coagulation with droplets in Venturi tubes of industrial scale, based on spatial variation of the collection efficiency of particles on individual droplets, accounting for spray water flow polydispersity and particle size distribution, which allows to define optimal droplets size and spray water flow rate at different modes of thermal power units operation. The model is validated with the ...
Autori: Igor Volchyn
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27836

This paper seeks to evaluate the quantities of e-waste in Botswana from 2000-2019, with a view towards formulating an effective and sound e-waste management system. Due to a lack of complete historical records on e-waste quantity and quality, this was achieved by the Grey Model GM(1,1) forecasting method. Our estimations indicate that an average weight of about 293.18 tons of e-waste will be generated in 2019 in the country. Considering an economic lifespan of between 3 and 10 years, more e-wast...
Autori: Daniel Mmereki
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27838

This study was carried out to determine the feasibility of applying a freeze concentration technique to rarefy milking wastewater using either a stationary wastewater vessel (the first series of tests) or a rotary ice–making machine (the second series of tests). In this study, we investigated the impact of freezing temperature, initial milking wastewater concentration and vessel depth upon the removal rate of chemical oxygen demand (COD). Results show that when the freezing temperature ...
Autori: Yingjie Dai
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27845

The main topic of this study is the photo-optical and electrochemical behavior of a series of fluorinated copolyimides containing both oxadiazole and perylene moieties in the main chain. The polymers prove a strong photo-optical stability on a large temperature domain and display different types of photoluminescent behavior in solution and in solid state, with emission maxima in the bluish and green–yellow domains. Cyclic voltammetry investigations suggest that the polymers can be easil...
Autori: Radu-Dan Rusu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27883

The native and surface modified adsorbents from agricultural waste, such as Psyllium stalks (PS) were investigated for their ability to remove the Coomassie Brilliant Blue (CBB) dye from aqueous media. The native and surface modified adsorbents were characterized by the Fourier Transform Infrared spectroscopy (FTIR). The results show that the Sodium Bicarbonate Treated Carbon (SBTC) has good surface properties for the removal of the CBB dye from aqueous media. The SBTC was analyzed by Scanni...
Autori: Premkumar Manickam Periyaraman
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27898

A system dynamics (SD) process-based simulation model was developed using an object-oriented environment to simulate phosphorus (P) transformations in a two-stage pilot scale Dewatered Alum Sludge Cake (DASC) based Constructed Wetlands (CW), which is operated from February 2009 to January 2010 to treat relatively high concentration animal farm wastewater. Structural Thinking Experiential Learning Laboratory and Animation (STELLA v9.1.4) conceived on the principles of SD was used for the deve...
Autori: Lordwin Jeyakumar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27907

In this study, Mg-doped ZnO nanoparticles with 2% Mg content were synthesized by sol-gel method. The structure and morphology of the nanoparticles were characterized by TEM, BET and UV-Vis absorbance techniques. From TEM image, it was found out that the nanoparticles had uniform size and uniform distribution. BET analysis revealed that in comparison with pure ZnO, Mg 2%/ZnO nanoparticles had a higher specific surface area. Based on UV-Vis absorbance analysis, Mg 2%/ZnO nanoparticles shifted t...
Autori: Nahide Zarei
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27909

This paper presents the results of a case study conducted between 2.04 and 24.04.2013 in order to establish the most relevant indicators that characterize the influence of outdoor air pollution, with particulate matter having a nominal diameter less than 2.5μm (PM2.5), on the quality of indoor air from a new building. The tests consisted in simultaneous determination of the daily average PM2.5 concentrations at four indoor sites and at one outside, nearby the building. The average PM2.5 c...
Autori: Elena Bucur
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27914

Recent studies have demonstrated how buyers can influence the environmental performance of suppliers. However, although industrial waste accounts for much of the waste generated in the west, little is known about how industrial waste is managed downstream. We present an analysis of the drivers influencing the decision to opt for waste-to-recovery rather than disposal facilities. The drivers were investigated by a questionnaire survey. Findings show that the manufacturing industry is more like...
Autori: Natalia Marzia Gusmerotti
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27915

Biosorption of copper(II) by lyophilized and thermally treated bacterial biomass of Pseudomonas aeruginosa PAO1 and Pseudomonas fluorescens BME in aqueous suspension was studied. The cell surface properties were characterized and the experimental conditions, e.g., pH, adsorption time, and initial metal concentration were optimized for efficient biosorption. The surface charge was negative at pH above 2.5 for P. aeruginosa, and above pH 4 for P. fluorescens. The highest copper(II) uptake was ...
Autori: Anikó Kőnig-Péter
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27917

The objective of this paper is to investigate eco-efficiency in a durable goods manufacturing system. It is intended to apply a method used in a company producing heating devices within the boiler sector. A hybrid methodology is used to assess the eco-efficiency of manufacturing processes, based on combining Material Flow Analysis, Life Cycle Assessment, and Material Flow Cost Accounting. This provides an effective approach to evaluate environmental and economic performance in the context of ...
Autori: Aldona Kluczek
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27918

In this study we investigated the possibilities of using recyclable fine and coarse grain waste obtained by grinding Polyethylene Terephthalate (PET) containers, as light filling materials for different applications (clay dams, highway embankments, and backfills behind retaining structures. Various geotechnical tests were performed on clayey soil and soil-PET mixtures using recycled fine and coarse granules of Polyethylene Terephthalate bottles. The results indicated that the use of the recyc...
Autori: Osman Gunaydin
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27920

Among all the prominent contributors of municipal solid waste (MSW), schools have been chosen for the study since the rate of solid waste generation and its respective composition has not been reported or rather has been underestimated in the schools of Puducherry region. Hence, the present paper is an attempt to fill up this gap in our knowledge. The existing waste management system in selected schools was unsystematic and relatively scarce to meet the waste management objectives in precise ...
Autori: Rajamanikam Ramamoorthy
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27921

The main aim of this paper was to obtain, on the base of sensitivity analysis, a guide for correct operation of the sewage treatment plant at Eforie Sud which uses sequential batch reactors (SBRs). For this purpose several original procedures were realized. An initial regression model was obtained using the SBR simulation with STOAT 5.0 software, confronted with the process data collected on-line. As it was expected, the range of these data was small, corresponding to the usual domain of SBR ...
Autori: Cristina Singureanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27923

In recent years companies have become more interested in the implementation of sustainability principles in their business activities. However, despite the improvements in their practices, an increase in the amount of general consumption often exceeds the achieved progress. Thus, it is essential to consider that the relation between consumption and production should be evaluated systematically and technological approaches are not enough to realize the goal of sustainable consumption and produ...
Autori: Gintė Jonkutė
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27931

The objective of this work was to evaluate the effects of six lactic acid bacterial strains originated from different natural habitats of fermented food and feedstuff on pasture grass and alfalfa laboratory scale silages. The prepared mini silos were inoculated with the following bacterial strains alone or in combination: Lactobacillus brevis LbB (2x107 cfu/mL), Enterococcus faecalis EF (3.6x108 cfu/mL), Lactobacillus plantarum subsp. plantarum LbP (2.8x108 cfu/mL), Weissella paramesenteroide...
Autori: Éva Laslo
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27933

Sustainable development brings in advance a new set of values that will guide the future model of economic and social progress, values that focus on human and his current and future needs, on the natural environment - protecting and preserving it, as well as on mitigating the current deterioration of ecosystems. The present paper aims at improving a calculation method for measuring the ecological footprint generated by road traffic, through modifying the concept of integrating variables, incr...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27948

For assessing the intrinsic safety to mechanical sparks, two dedicated methods are implemented in testing laboratories and further used for the conformity assessment of products with regard to explosive atmospheres ignition, namely: impact test and friction test. The purpose of the article is to present the results obtained by using the first method mentioned, results which shall be applied in further research for comparison with the ones resulting from the friction test. The article presents...
Autori: Adrian Marius Jurca
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27957

The research carried out in the specialized Laboratory of the National Institute for Research and Development in Mine Safety and Explosion Protection - INSEMEX Petrosani has identified the causes of high pressure peaks occurrence in the case of large electric motor enclosures as: the extremely large internal volume, the geometrical shape of motor enclosures and the very intricate and complex internal arrangement of such motor enclosures, having in mind the tendency of motor manufacturers for ...
Autori: Mihai Magyari
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27960

Explosion-type accidents can cause significant human losses and material damages; therefore, special attention has to be granted to explosion risk assessments and to the development of appropriate explosion-protection measures. Such measures of protection aim to reduce the explosion risk to acceptable levels, in compliance with regulations and standards in force, so as to provide the proper safety level for humans as well as to prevent damage to the surrounding goods and environment. The flas...
Autori: Marin Silviu Nan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27961

Being able to estimate the quantity of pollutants that can be spread in the environment is a factor of paramount importance in the industrial panorama. In order to accomplish such aim, a crucial step is the estimation of the so-called source term, that is the rate of generation (or release) of a substance in a generic process. A proper estimation requires to consider both the machinery and the unit operations present into the analysed system. For such reasons, ad hoc considerations and models...
Autori: Marco Barozzi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27964

In the mineral matter of coal there are microelements chemically bounded to organic matter or mineral impurities in various combinations that catalyzes the evolution / involution of a spontaneous combustion phenomenon as an accelerator in the oxidation reaction or which slows down these processes. Specialised literature analyzes the phenomenon of coal self-heating based on several theories of which we exemplify the theory of coal oxidation, the theory of pyrite and the theory of the microele...
Autori: Cristian Tomescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27966

In order to highlight the impact of environmental pollution for Romanian nursing mothers we evaluated the concentration of heavy metals and trace elements in their blood and breast milk. The evaluation was done taking into account the pollution level of mother’s residence: Bucharest (an industrial and heavy transited town, identified as the highly polluted area) and a small town (without industrial plants, identified as less polluted area). The determination of heavy metals and trace eleme...
Autori: Larisa Prioteasa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27973

The present paper is a multidisciplinary investigation of the indoor air quality inside the Multipurpose Hall of the University of Oradea, based both on specific monitoring and questionnaire-based survey to identify people’s perception in this regard. The monitoring, carried out during October-November 2016 when the heating did not work, was focused on: relative air temperature and humidity (Thermohygrometer data logger Klimalogg Pro), carbon dioxide (CO2) (Extech Instruments CO250 model a...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27981

Water retention capacity and hydraulic conductivity are major soil hydraulic properties that influence soil quality and the environment. The objective of this work was to assess major soil hydraulic characteristics in response to the effect of soil management and tillage practices. Eight soil treatments were considered: conventional tillage, reduced tillage, no-tillage, fallow notillage, abandoned soil, compacted soil, plough on compacted soil, and application of super absorbent polymers. The...
Autori: Fereshte Haghighi Fashi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27996

The paper presents an experimental system enabling a laboratory simulation of several types of critical situations and aggravating circumstances (sources of smoke, fog, rain, heat) using a thermovision equipment. The critical situations taken into consideration are those caused by human negligence or natural disasters such as earthquakes. Aggravating circumstances are those considered as being limit. The proposed thermovision equipment with appropriate accessories must highlight and determine...
Autori: Catalin Spulber
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27997

The paper reports on the preparation of polysiloxane hydrophobized viscose-maghemite/goethite magnetic composite with properties appropriate for uses in oil spill sorption from polluted aqueous media. A multi-step procedure was employed to obtain the polymeric composite. The structures of the prepared samples and precursors were analyzed by Fourier transform infrared spectroscopy (FTIR), whereas their morphology was investigated by means of scanning electron microscopy (SEM). The hydrophobic...
Autori: Răzvan Rotaru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28008

The main focus of the current research work is an identification of sustainability of textile wastewater management (STWM) practices and subsequently to suggest a conceptual framework that influences the STWM practices on performance improvement. By exhaustive literature review, STWM practices are examined and designated highly significant STWM practices for further analysis. The proposed design shows a clear interpretation of sustainable textile wastewater management that depends on economic pe...
Autori: Punyasloka Pattnaik
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28058

Several theoretical studies were oriented towards the relationship between the main two building design estimators (building energy consumption and indoor environmental quality) but very little experimental research has been carried out in order to underline the correlation between this two parameters. This paper is focused towards the experimental study of the correlation between these two design estimators. Several indoor comfort parameters (air temperature, radiant mean temperature, sound ...
Autori: Mihai Toderaşc
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28042

The concept of the sustainable development which is defined in terms of the triple bottom line (economic, environmental and social) is becoming increasingly important. Until now, however, the social aspects have been under-investigated in comparison to environmental and economic aspects. From the product design point of view there is an emergency for development tools and methodologies that are directly linked with the social pillar of sustainability. The research has as main target to discover ...
Autori: Nikolaos Efkolidis
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28052

This study is a comparative assessment of domestic water quality collected from 35 sampling points in seven typical rural communities in Abia State, Southeast Nigeria. Physicochemical parameters such as pH, conductivity, turbidity and bacteriological parameters such as plate count and total coliform were analysed in the laboratory using standard World Health Organization (WHO) methodology. Results indicate that there are significant variations (p<0.05) in the physicochemical parameters of the...
Autori: Oliver O. Odikamnoro
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28054

This paper focuses on the effect of some water quality parameters of river water which helps in the calculation of water quality index (WQI) that culminates in the development of a regression model for prediction of WQI of the river system in India. The index was calculated by arithmetic index method using twelve various experimentally estimated water quality parameters such as potential hydrogen, chlorides, dissolved oxygen saturation, nitrates, sulphates, phosphates, total dissolved solids, bi...
Autori: Divya Airattil Haridas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28065

Most people is aware that outdoor air pollution can impact human health, including indoor air pollution. Human exposure to air pollutants indicate that indoor levels of pollutants may be two to five times, and occasionally more than 100 times, higher than outdoor levels. These levels of indoor air pollutants are of particular concern because most people spend about 90 percent of their time indoors. In this manuscript we monitored indoor pollutants in a school building with two different methodol...
Autori: Patrizia Aversa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28072

Proteins from Hermetia illucens (or Black Soldier Fly, BSF) have been employed in this study as possible source for bioplastic formulation. This type of bioplastic can replace the actual materials employed in agriculture, avoiding the critical issues concerning the soil pollution due to conventional plastic end-life. Different plasticizing agents (glycerol and polyethylene glycol) have been tested and the ability to generate a homogenous film, through wet casting, has been evaluated. Characteriz...
Autori: Silvia Barbi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28074

The embedment of circular economy principles in cities is an opportunity to reduce the urban waste production and resource consumption towards closed-loop systems. In particular, the adoption of circular economy strategies as regeneration, optimization, sharing and loops can overcome waste and inefficiencies of linear economy. This paper presents some circular economy practices bringing an integration of circular strategies at urban scale. This work was funded by the Research into Electrical Sys...
Autori: Francesca Cappellaro
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28076

Multiple activities carried out on coastal areas expose marine sediments to contamination and their management has a great socio-economic importance with a high impact on economic development of coastal areas. However, there is an increasing shift towards the use of more sustainable approaches for managing ‘contaminated’ sediments. Using a case study of the Favignana Habour in Italy, this paper evaluates three approaches for the management of these sediments. The results of simulatio...
Autori: Sergio Cappucci
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28082

Agriculture is a highly water-demanding sector. Developed in recent years, the precision farming approach allows to optimize irrigation without compromising crops productivity. WSN networks are a key element of this approach because they allow to monitor continuously large number of parameters providing the possibility of a real-time intervention on field management practices. The WSN networks can be used to measure traditional parameters such as precipitation, soil moisture, or irradiation and ...
Autori: Sara Simona Cipolla
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28083

The study describes the start-up phase of the door-to-door separate collection service of municipal solid waste (MSW) in a large metropolitan area, analysing not only the performance in terms of separately collected waste but also the feedback from citizens on how to improve it. For the scope, the case study of the city of Bari (Southern Italy) was considered. The methodological approach involved primarily the subdivision of the entire municipality into eight homogeneous territorial zones (HTZ) ...
Autori: Sabino De Gisi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28084

Sediments in coastal areas can accumulate a variety of contaminants, acting as both carriers and long-term secondary sources of contamination for aquatic ecosystems. Nowadays, there is a growing interest on developing new assessment criteria of sediment ecological quality for setting priorities and management strategies of contaminated materials. According to the literature, the weight of evidence (WOE) approach has been developed to provide a multidisciplinary characterization which combines di...
Autori: Francesco Todaro
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28089

The latent relationships between lean product development (PD) and green PD appear to be in its infancy in literature. Thus, the main objective of this research is to uncover the intersection of lean and green with PD issues, by building a conceptual framework of the field and proposing synergies among practices from these paradigms. A research design is proposed listing the lean and green practices in PD through a systematic literature review process. Firstly, papers were gathered from internat...
Autori: Rosania Monteiro Coutinho
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28092

Fluidization characteristics and separation properties of fluidized beds with different bed structures were studied. The stability of fluidized beds with different structures decreases with the increase of bed height. The uniformity and stability of density of rectangular fluidized bed is better than that of square and circular fluidized bed at the same bed height. The influence of fine coal content on the density distribution of fluidized bed has little relation with the bed structure. Separati...
Autori: Shulei Song
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28094

The normal operation of spray humidification air cooler hinges on the good contact between droplets and air in the humidification chamber. The spiral pressure nozzle was chosen for the experiment on inlet air spray cooling. During the experiment, the spray cooling performance and atomization features were examined, and the cooling effects of different nozzle layouts were compared.Through the analysis of heat and mass transfer, the critical pressure of the spiral pressure nozzle was determined, a...
Autori: Xiaoqing Huang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28110

This study is an attempt to monitor the indoor microclimate and the microbiological contamination of some indoor objects inside a wooden Orthodox church. Standard microbiological techniques were used for the isolation and identification of the fungi present in the dust of the superficial surface of the paintings chosen to be investigated for biodeterioration. Samples were taken from approximately 1 cm2 of the surface of the analysed paintings (cotton canvas, wood, on primer) using the cotton swa...
Autori: Dorina Camelia Ilieș
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28114

The maintenance of flexible roads or roads at end of life service generates high quantities of reclaimed asphalt pavement every year. The reuse of these materials, considered for a long time as waste, allows a substantial saving in transport, energy, and maintains dwindling natural resources. Recycling of asphalt also helps to reduce inert waste storage volumes, and conserve valuable landfill space. The applicability of recycled asphalt was tested in laboratory, and asphalt mixtures containing 2...
Autori: Mehena Oualit
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28117

The production of food wastes is a serious issue in developed and developing countries. The biogas production technology is one of the most sustainable methods for treating food wastes. Currently, there is a great need to implement suitable methods to enhance biodegradation and methane production. This study investigated the effect of manure addition and leachate lime-pretreatment on the biogas and methane production from spoilable municipal solid wastes using a hybrid anaerobic-aerobic bioreact...
Autori: Fatemeh Aliasgari
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28123

The present study represents an extension of ergosterol production by Saccharomyces cerevisiae fermentation processes using oxygen-vector by establishing the influence of the analyzed main factors, such as aeration efficiency and hydrocarbon concentration. The study has been developed for batch and fed-batch fermentation systems and has been focused on the variation of ergosterol content inside the yeast cells during the fermentation cycle in correlation with hydrocarbon volumetric fraction, COV...
Autori: Corina Ciobanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28130

In order to reduce environmental impacts from final disposal, an interest in reverse logistics has caught the attention of both firms and academicians. However, motivational factors or drivers have to be considered to efficiently perform reverse logistics, as well as the different perspectives from stakeholders. Thus, the purpose of this study is to evaluate the interrelationship among reverse logistics drivers under the perspectives of the key stakeholders. A grey-based DEMATEL (Decision Makin...
Autori: Marina Bouzon
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28133

In Spain, most substrates used in the production of plants in containers, are composed of peat in combination with other components such as pine bark, perlite or vermiculite. In order to find alternatives to the use of peat, shredded switchgrass (Panicum virgatum L.) biomass was evaluated as a component of the substrates. Five substrates were prepared with the following proportions, by volume, of commercial substrates:switchgrass: 100/0, 75/25, 50/50, 25/75 and 0/100. Pots were filled with the ...
Autori: Jose Alberto Oliveira Prendes
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28134

Municipal wastewater treatment is a global issue and an expensive process. Treatment of the wastewater using algal growth is a cost-effective approach, because of easy propagation of algae in wastewaters through utilization of most of the nutrients and in turn reduces the pollution load. As a preliminary research work, laboratory scale studies were done using native algal species collected from particular sources. They were grown in different pond waters to observe the biomass development in co...
Autori: Iqbal Ansari
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28135

Soluble dyes are intensively used in various industrial activities. They represent an important class of water pollutants from which they are rather difficult to remove. This paper focusses on the elimination of Congo Red (CR) ionic azo dye by adsorption on a low cost material. Cherry stones were used for activated carbon preparation by carbonization method. A temperature of 600 °C and a time of 4 h were found as adequate parameters for the physical activation and led to a final white powder...
Autori: Cristina-Gabriela Grigoraș
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28153

The industrial water quality of a thermal power plant is of high importance, and a process water treatment station being always required. Whatever the adopted treatment system is, it is accompanied by the production of different amounts of sediment and sludge, which must be disposed and valorized. This paper presents in detail, the physical-chemical treatment system applied for the industrial water production in a Romanian thermal power plant (Veolia Energy Iasi Co.), referring to its installati...
Autori: Dorina Stănciulescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28154

The Cellets product represents a cellulose material, which combines different properties such as the perfect sphericity, fine particle size distribution, low friability and solubility, and inertness. The experiments were carried out with Cellets 200 granulated celluloses used as a filling material for a laboratory glass column, using diluted dye solution (9-10 mg of dye /L of solution) at adequate initial pH (4.7). The effect of flow rate was investigated, and the modeling of experimental data f...
Autori: Iulia Nica
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28155

Apart of new equipment’s development such as absorption columns with higher efficiency, for chemical industry, there is a strong need for greenhouse gases reduction in order to assure the environmental protection and, consequently, many studies regarding the purification methods of exhausted gases have been performed. There are several types of reactors used for gases purification, such as: bubbling jet reactor, combined packed and spray tower absorber, cable wet scrubber and packed column...
Autori: Elisabeta Droniuc Hultuana
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28160

The pyrolysis of frying palm oil was studied in continuous stationary process, in a micropilot plant. The main factors affecting the products yields are temperature and residence time. For the studied parameters range (temperature: 475oC - 630oC and residence time: 120 s- 240 s), the gas yield varied between 7.9% (w/w) and 63.3% (w/w), related to feed. Unsaturated hydrocarbon yields (olefins) can reach 24-29% (w/w) related to feed, at the right processing parameters, the main products having goo...
Autori: Ana Maria Sivriu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28162

The paper covers the results of a study, carried out during 2005 and 2018, regarding the impact of sludge dump of a wastewater treatment plant from Iasi city, Romania, on the soil characteristics. Experimental research was conducted to highlight the evolution of the heavy metal content of both the material in the storage site and the soil in its proximity. The following heavy metal concentrations were analyzed with atomic adsorption spectrometry method: Zn, Ni, Cr, Pb, Co, Cu and Cd. Research ha...
Autori: Georgiana Cezarina Bartic Lazăr
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28164

Invasive plant species, like Indigo bush (Amorpha fruticosa L.), Boxelder (Acer negundo L.), Japanese knotweed [Fallopia japonica (Houtt.) Ronse Decr] are altering the conservation status of terrestrial ecosystems along the Mureș Floodplain Natural Park in Romania. On a long run, and a large geographic scale, the invasive species have a high potential to generate a negative impact on the environment and the economy. Hence there is a stringent need of preventing, tracking down, and controlling i...
Autori: Oana BrĂŽnzan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28170

Adsorption of diazinon from aqueous solution was studied by using cross-linked Chitosan/Carbon Nanotube (CHN-CNT) in a fixed-bed column. The cross linked CHN-CNT with 2.5% of MWCNT was prepared with a protected crosslinking method. The effects of the initial concentration of diazinon, bed-height, and flow rate on the adsorption of diazinon onto the cross linked CHN-CNT were investigated. The highest bed capacity of 29.47 mg/g was obtained at the initial concentration of 50 mg/L, flow rate of 10....
Autori: Tahere Taghizade Firozjaee
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28174

Environmental quality is directly influenced by the level of pollution generated by economic, industrial or anthropogenic activities and directly affect the citizens’ life quality and wellbeing, and ensuring a good status of environment it is a stringent topic that must become the major interest for the local public authorities. The main goal of this study is to evaluate the environmental quality in Iasi city, how the overall quality is influenced by the level of pollution and what are the...
Autori: Silviu Petru Grecu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28180

In cold, high-latitude regions, snow evaporation can significantly influence the snow water equivalent and thus change the regional water balance in early spring. In order to explore how the snowfall event and environmental factors affected the snow evaporation rate in the northern Daxing'an Mountains in China. From the snow melting period of March 2016 to April 2018, the eddy covariance method was used to explore the relationship between environmental factors and snow evaporation. The resul...
Autori: Youwei Lin
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28181

Traditional winemaking for subsistence is at the heart of rural households in traditional cultural landscapes where the bioclimatic conditions allow wine production. As these wines are typically not assessed for their elemental content, their consumers could be exposed to various contaminants. Our goals were the followings: (i) to understand the elemental composition of non-commercial traditional wines from three cultural regions of Eastern Europe (Romania) and (ii) to find the main chemical fac...
Autori: Xintia Odett Dembroszky
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28189

Clearly, the purpose of this paper is to find an answer to the following question “Is the ethanol additive more environmentally friendly for an SI engine or for a CI engine?”. The tests, therefore, were conducted on both an SI and a CI engine for the same parameters under both same conditions and laboratory. Ethanol was blended into neat diesel (D100) and neat gasoline (G100) at the same proportion (10 vol. %) and two blends were prepared in the study, namely D90E10 and G90E10, re...
Autori: Suat SarÄądemir
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28190

The western forests and rangelands of Iran in Zagros Mountain are valuable ecosystems for protecting the water and soil resources and providing the habitat for endemic fauna and flora. These ecosystems have widely destroyed by human interferences in the recent years. The land cover mapping using an accurate method is the first step to prevent the further destruction of these ecosystems. The aim of this study was to generate a land cover map of Ilam (Western Iran) using Sentinel-2A data at 10 m s...
Autori: Saeedeh Eskandari
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28192

Nine samples of recycled acrylonitrile butadiene styrene (ABS) with organic montmorillonite and fire retardants adding were combined to prepare ABS copolymer nanocomposites. A very good dispersion of clay and fire retardant was noticed in the recycled ABS (reABS) matrix. The effect of montmorillonite and fire retardants on the mechanical and thermal properties of the reABS nanocomposites was further investigated. Experimental results showed that the addition of organic montmorillonite increased ...
Autori: Tudor Mihai Simionescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28203

LED waste quartz sand (LEDWS), which is a prominent by product of the LED manufacturing process, may contaminate the environment because it comprises specific heavy metals (e.g., As and Cu), which are hazardous ingredients to the environment when disposed of improperly. Therefore, this study investigated the use of light-emitting diode (LED) waste quartz sand to partially replace Portland Type I cement (OPC) to evaluate the feasibility of reusing it as a pozzolanic material. The SiO2, Na2O, and ...
Autori: Kae-Long Lin
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28207

Diesel oil (DO) as a mixture of alkanes and aromatic compounds causes damage to the ecosystem in terrestrial and aquatic habitats. One of the best methods of treating contaminated areas is to use microorganisms in a bioremediation method that can degrade pollutants. The aim of this study was to isolate indigenous bacteria with high biodegradation potential of DO from oil-contaminated wastewater. Bacterial isolation was performed using a mineral medium containing contain 1% DO as the sole source ...
Autori: Sharareh Dashteepour
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28224

Environmental laboratories could use a quality management system (QMS) to organize their management activities in order to promote the standardization and reliability of the results generated. This research aimed to construct and apply a diagnostic model to identify the implementation of the best quality management practices based on the ISO 17025 standard in an environmental laboratory at the State University of Maringá, Brazil. The implementation of management practices was conducted o...
Autori: Bruna Maria GerĂ´nimo
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28228

The olive oil extraction industry is one of the most polluting wastewaters from the food industry, which is considered an important economic activity in the world. The environmental effects of olive wastewater are related to chemical and organic loading, which is resistant to biodegradation processes. The purpose of this study was to determine the efficiency of combined electrocoagulation, catalytic ozonation, to reduce organic load and improve the biodegradability of olive oil sewage. The pres...
Autori: Mohammad Reza Khani
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28261

The urban eco-environment is greatly affected by the ecosystem and landscape pattern of the wetlands nearby. Based on geological information system (GIS), this paper explores the landscape, plant distribution and animal distribution in a constructed wetland of the Yellow River Basin through field survey, identifies the landscape pattern of the ecosystem in the study area through correlation analysis, and thoroughly evaluates the health of the wetland ecosystem based on statistical results. The ...
Autori: XueLing Zhang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28266

The treatment of acidic wastewater of copper sulfide produces a huge amount of sediment, which can be processed into the planting matrix for ecological restoration of mines. This paper attempts to screen out the plants suitable for the acidic wastewater sediment, laying the basis for ecological restoration of mines. Therefore, 14 plant species were selected for preliminary tests on survival rate and growth tests in sediment pond. The survival rates and growth conditions of each plant species in...
Autori: Jinchun Xue
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28268

The Jinghui Canal Irrigation District (JCID) is a highly productive agricultural area of Shaanxi province, China. Because of severe water scarcity, implementing water-saving renovation practices for agricultural sustainability is necessary. To determine the influence of different water saving practises on the shallow groundwater system in the JCID, ArcGIS and Processing MODFLOW are used to simulate changes in shallow groundwater in the irrigated farmland in this area. The results show that field...
Autori: Fenggang Dai
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28278

From the perspective of Micro-Low-Carbon Economy, this paper studies the low-carbon manufacturing decision model of manufacturing enterprises considering carbon emission trading and green technology input under the carbon cap. The paper shows that the manufacturing enterprises have optimal output and this is unique under the carbon cap. The low-carbon manufacturing decision is addressed under three situations: carbon emission trading, green technology input and joint decision. The research shows...
Autori: Ma Changsong
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28279

In this paper, we propose innovative solutions for reusing an inactive offshore gas platform and its associated infrastructures as a scientific research hub, where an integrated energy system and innovative environmental monitoring methods are envisaged. To this end, the Azalea A platform, located in the northern Adriatic Sea, is considered a good pilot site. This study analyzes the engineering solutions on Azalea A for the combined production of solar and wind energy coupled with hydrogen produ...
Autori: Ilaria Antoncecchi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28284

Waste prevention is one of the main strategic objectives of the European waste management policy and it is also at the basis of circular economy concept. This paper explores the connection between waste prevention and circular economy in the context of Emilia-Romagna Region (Italy). Since 2015, Emilia-Romagna regional government has approved a circular economy Regional Law, including a series of actions supporting both European waste hierarchy and circular economy. All these actions promote a t...
Autori: Francesca Cappellaro
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28290

The present study proposes to identify some important factors for sustainable environmental development. Sustainable Development Goal (SDG) 4 from Agenda 2030 is focused on education including university. In addition, higher education has a central role in delivering a number of the other SDGs. The universities become a role model of sustainable development and environmental protection behavior and practices. The purpose of this study is to examine the relationship between environmental attitu...
Autori: Sinan Saraçli
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28345

Côte d'Ivoire is one of the world's leading producers and exporters of agricultural products. Unfortunately, the multiplicity of stakeholders in this sector and the absence of legislation and regulations have contributed to the pollution of the various hydro systems, particularly those of Taabo river basin. The purpose of this study was to assess the ability of the Soil and Water Assessment Tool (SWAT) model to test the applicability of three vegetative filter strips scenarios to m...
Autori: Kouao Armand Anoh
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28346

The present study describes the facile synthesis of silver nanoparticles (AgNPs) by green method using aqueous extract of Gazania rigens. The size, morphological, compositional and optical properties of silver nanoparticles were examined through X-ray diffraction (XRD), Energy Dispersive X-ray spectroscopy (EDX), Scanning Electron Microscope (SEM), and UV-Vis spectroscopy respectively. Ultraviolet-Visible spectra showed the absorbance band between 425–460 nm which indicated the synthesis o...
Autori: Tayyaba Shahzadi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28349