AbstractDuring the transition to a market economy, many countries with a planned economy in Central and Eastern Europe face similar challenges when the established socio-economic systems and infrastructures deemed inefficient in a market economy. Also new issues are being raised by the trends of globalization and the vision of sustainable development. In the energy sector the challenges raised by the Kyoto Protocol and its implementation mechanisms are especially interesting, because they are in...
Autori: Andrius Plepys, Giulia Gervasoni, Jean-Philippe Boutin, Kes McCormick, Kristin Seyboth, Luis Mundaca, Marko Ratton, Patrick Lamers, Robert Hlep
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25104

Include urmatoarele articole� Degradation of alcian blue 8 gx by heterogeneous and homogeneous photocatalytic processes� Evaluating the performance of solid waste management models� Bioreactors with stirred bed of immobilized cells 1. Studies on mixing efficiency� Fugitive emissions estimation from petroleum storage tanks� New Ni(II) coordination polymers with insulating and anticorrosive properties� Determination of water quality deterioration at pilgrimage centre along river netrav...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25196

Contine urmatoarele articole:??Â?Â? Alternative energy sources in transition countries. The case of bioenergy in Ukraine??Â?Â? Catalytic destruction of aromatic VOCs on SCR-DeNOx commercial catalyst??Â?Â? Ecological Economics And Transport Systems??Â?Â? Bioleaching of uranyl ions from uranium ores by some algae??Â?Â? Irreversible affinity immobilization of lentil seedling??Â?Â? Evaluation of artificial neural network techniques for river flow forecasting??Â?Â? Hydrogen and sustainable energy. Re...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25194

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

Abstract Hydrogen could be considered a synthetic secondary power carrier fuel in the years to come, subsequent to the fossil fuels economy. Thus the concept 'hydrogen economy' shall be defined, and it will also have a great influence in the future years.The field of power generation (producing electric power), transports, (electric cars), chemistry (hydrogen is a major raw material) are potential users of hydrogen.The experts support, by means of a series of economical and strategic analysis ma...
Autori: Corina Rădulescu, Elisabeta Păsculete, Florentina Condrea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25111

AbstractThe objective of the paper is to present sustainability indicators for municipal solid waste management (MSWM). Sustainability implies environmental, economic and social acceptance. The complexity of the system-in-focus requires the employment of a systems (or cybernetic) approach: Acceptance implies clear objectives, from a specific point of view (here, the viewpoint of the municipal administration is taken), over a time horizon covering at least two generations, a life-cycle considerat...
Autori: Demetrios Panagiotakopoulos, Konstantinia Tsilemou
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25112

<!--[if !supportEmptyParas]--> The photocatalytic degradation of Alcian Blue 8 GX, a copper phthalocyanine cationic dye, has been investigated in aqueous solutions both in heterogeneous and homogeneous systems. Initial colour removal rates in different conditions were calculated in both cases. Influence of amounts of H2O2 and FeCl3 was studied and compared for the two photocatalytic systems. Finally, some conclusions regarding the efficiency of the two photocatalytic processes were es...
Autori: Anca Florentina Caliman, Chrysanthi Berberidou, , Liliana Lazar, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25114

The models describing the flow or the heat and mass transfer in stirred bioreactors can be easily adapted for the continuous phase from the stirred bed bioreactors. But, for the immobilized biocatalyst phase, new models have to be established. Therefore, in this paper the influences of the main factors on mixing for a bioreactor with stirred bed of S. cerevisiae immobilized cells in alginate have been analyzed.. The mixing efficiency continuously increases with rotation speed acceleration for th...
Autori: Anca-Irina Galaction, Anca-Marcela Lupasteanu, Dan Caşcaval
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25116

During 2005 and 2006, in the Infectious Diseases Hospital in IaÂ?i, there were admitted 26 patients suffering by Leptospirosis. The clinical investigations followed the tests of inflammation, the renal and hepatic proofs, the cefalo-rahidian liquid’s aspect, the ELISA Leptospirosis serum tests etc. The Leptospirosis etiology shown that on 50% of the patients, the affection was owed to L.ichterohemoragiae. The average cost of the treatment for a patient was evaluated as around 1000 Euro. The pa...
Autori: Carmen Dorobăţ, Doina Carmen Manciuc, Mihai Nicu, Mihnea Hurmuzache
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25120

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

In recent years the removal of toxic substances especially heavy metals from water and wastewater by using of non-conventional low-cost sorbent (industrial wastes and some natural material including microorganisms, plant-derived materials, agricultural products and by-products, mineral oxides, clays) has received much attention. In this paper efficiency of Zn (II) removal from aqueous solutions by sorption onto Romanian sphagnum peat moss was studied in batch experiments involving process parame...
Autori: Angelica Kicsi, , Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25126

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

AbstractThis paper reviews some practical aspects of the application of algal biomass for the biosorption of heavy metals from wastewater. The ability of different algal species to remove metals varies with algal group and morphology, with the speciation of specific metals and their competition with others in wastewater, and with environmental or process factors. The scattered literature on the uptake of heavy metals by both living and dead algal biomass - both macroalgae and immobilized microal...
Autori: Loredana Branza, Maria Gavrilescu, Matthew J. Dring
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25133

Actual trends in papermaking concern on the use of recycled fibers and minimizing effluent volume by closing water circuit. Beside environmental and economic advantages, both trends can lead to serious problems in papermaking processes due to contaminants introduced with recycled fibers and their accumulation in closed water system. A key factor to avoid disturbances in the papermaking is to prevent the accumulation of detrimental compounds. In this respect, first it is necessary to find out met...
Autori: Dan Belosinschi, Elena Bobu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25134

AbstractDuring the modern history the ability of plant roots to consolidate and strengthen the soil was exploited twice in France: once in1867 by Joseph Monier who created the reinforced concrete, and then in 1962 by Henry Vidal who created structured soils.The paper presents the some results obtained on the ecological protection of floodplain in major riverbeds. The aerodynamic modeling represents an efficient, economic and easy way to work with. The main condition of successful experiments is ...
Autori: Ana Virsta
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25136

AbstractThe goal of this paper is to examine the potential for ecologically and economically sustainable kraft pulp mills. This paper reviews technical and scientific literature on a wide range of factors that will influence the overall impact of a pulp mill on its total environment. The emphasis is on efforts to achieve "closed-loop," or Totally Effluent Free (TEF) mills which eliminate all liquid effluent and minimize the quantity and environmental impact of air and land discharges. An attempt...
Autori: Adrian Puitel, Dan Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25202

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

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

Plants as biomarkers, biosensors and biomonitorsModelling of wastewater treatment of a pulp and paper mill for monitoringCatalysts for heterogeneous photocatalysts. Part I. Possibilities to improve photoefficiency through catalysts modificationThe global assessment method of the water qualityAspects regarding the wood certification in RomaniaDecolorizing of pulping effluents by ammonium lignosulphonate oxidationPowder coatings-based organic filmsOn environmental effects of the pulp and paper mil...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25172

Contain all the articles from this issueICEEM /02 PLENARY SESSION:"Environmental Engineering and Management in the Context of Sustainable Development"Green technology foresight of high technology: Hype of potentials - The challenges from nanotechnology, Biotechnology and ICTMichael S?¸gaard J?¸rgensenIntrinsic properties of noble metals in catalytic selective reduction of NO by propene in lean burn conditionsAnne Giroir-Fendler, Helleh Saadallah, Adela HaletaICEEM/02 - ENVIRONMENTAL ENGINEERING ...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25178

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

? Kinetics considerations concerning the oxidative degradation by photo-fenton process of some antibiotics ? Catalytic wet hydrogen peroxide oxidation of 4-chlorophenol over iron-exchanged clays ? Researches on the negative effects assessment (slugging, clogging, ash deposits) developed at the biomass-coal co-firing ? Contribution to the study of the environmental heritage of a former chemical plant ? Impact of chemicals on derivatives with important therapeutic activity in C...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25376

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

AbstractIn this paper, the application of the heterogeneous photocatalysis in degradation of a cationic copper phtalocyanine dye, used as model of persistent organic compound is investigated by assessing the efficiency of the process. The influence of hydrogen peroxide on the photocatalytic process is studied using two types of commercial catalysts, such as TiO2 Degussa (88% anatase, 20% rutile) and TiONa Millennium (100% anatase). Another electron acceptor, FeCl3 is also used for investigation ...
Autori: Anca Florentina Caliman, , , Ioannis Poulios, Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25211

AbstractThis work presents the state of the art of qualitative and quantitative risk assessment methodologies in a variety of fields. Because risk exists in all ranges of human activity, both private and professional, risk assessment is an attempt to analyze precipitating causes of risk in order to more efficiently reduce its probability and effects. Numerous methodological guidelines within the field of environmental science exist to provide guidance for a risk assessment program, although the ...
Autori: , , Florentina Anca Căliman, Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25226

AbstractEnvironmental pollution has become much more of a problem in recent years than it has been in the past. Pollution caused by garbage disposal, toxic substances sloping from different sources has attracted a great deal of attention and can be a great inconvenient for the environment and for the people. In the face of growing social expectations encompassing both standards of living and environmental concerns, the idea of sustainable development has become popular among governments, industr...
Autori: , Marius Paslaru,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25232

AbstractThe zero waste is a policy, a way, an aim and represents a new approach planned for the 21st century, which includes the resource preservation principles, pollution reducing, increasing of the opportunities to create new jobs and providing the highest degree of economic stability.The strategy of developing the Romanian textile industry sub-sectors envisages the achieving of certain superior production indices, from a physical and value point of view, in 2010, a quantitative increase of t...
Autori: Eftalea Carpus, Emilia Visileanu, Razvan Scarlat
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25236

AbstractBased on the simulation equations, which were developed earlier (Rao, 1999 and Rao et al., 2007) relating the oxygen transfer coefficient k (= KLa20 (?ľ/g2)1/3) with theoretical power per unit volume of water X (= N3D2/g4/3?ľ1/3) and k with actual powerconsumed by the surface aerators per unit volume PV (= P/(V??(g?ľ)1/3), methodology has been demonstrated to the save the energy consumption, defined by ?? (=PV /k), where KLa20 is the overall oxygen transfer coefficient at 20oC, ?ľ is kin...
Autori: Achanta Ramakrishna Rao, Bimlesh Kumar, Neelam Verma
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25243

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

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

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

AbstractIn this paper, the study of synthesis and stability in aqueous solutions of new coordination compounds of Ti(IV) and Zr(IV) with ligand N-hydroxy-succinimide is presented. The salts: TiOSO4¡2H2O and ZrOCl2¡8H2O used for obtaining the studied coordination complexes, can derive from recycling metallic residues resulted in mechanical technologies applied for titanium and zirconium in S.C. ZIROM S.A. Giurgiu.The new complexes were synthesized in aqueous solutions and stability were study u...
Autori: Adrian Cailean, Daniel Sutiman, Doina Sibiescu, Gabriela Apostolescu, Ioan Roşca, Marian Crudu, Mihaela Vizitiu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25265

AbstractAs answer to European Community politics, in Romania the researches for waste reworking and ecological treatment are developing. The researches are focusing on wood wastes for its recovery in energy purposes. The purpose is the enlargement of superior coal utilization area obtained from Jiu Valley coal field, for increasing the efficiency of heating installations for domestic consumption, concordantly to European and Romanian pollutions regulations.Combined utilization of the fuel compos...
Autori: Camelia Bădulescu, Eugen Traistă, Gheorghe Lăzăroiu, Maria Orban, Valeriu Plesea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25267

AbstractIn the theory of relations between economical branches, a variety of balance of connections between the branches (BLR) models is used, whose theoretical construction is based on a series of hypotheses according to the purpose of each model. In this paper models which make use of the natural units are applied in the analysis of fluxes between industrial branches. ...
Autori: Aurel Burciu, Ionel Bostan, Petru P. Condrea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25277

AbstractThe efficient management of electricity consumption is an important tool to approach the basic objectives in the field of energy efficiency and environment protection. The paper describes an artificial neural network (ANN) approach to the problem of electric load profile prediction for a water supply system. The analysis was directed towards two main objectives: to determine the optimum input structure of the ANN with respect to the electric load profiles’ history and to determine the ...
Autori: Gilda Gavrilaş, Mihai Gavrilas, Ovidiu Ivanov
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25278

AbstractIn Serbia, the more recent sustainable development policy faces a number of serious problems, which are emphasized by the slow pace at which post-socialist r,eforms have been performed. Environmental aspects of transition reforms have hardly been tackled so far, the copper complex in the area of Bor (Eastern Serbia) being a notable example of such a delay. In effect, the practice of a more rigorous and systematic ex ante evaluation of possible future development scenarios is at its very ...
Autori: Miodrag Vujosevic,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25282

AbstractThe paper proposes a suitable solution for a one step treatment process of the wastewaters resulted from the textile industry, using a mixture of anatase and modified fly ash. The dyes photo-degradation on TiO2 anatase is well known. The use of fly ash in advanced wastewater treatment, for heavy metal adsorption, represents an environmental friendly process, efficient if the fly ash surface charge is controlled by solubilisation/reprecipitation. The first step in implementing the single ...
Autori: Anca Duta, Maria Visa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25292

AbstractThe paper discusses some aspects concerning the utilization of biomass as a bioenergy resource worldwide and in Romania, since  biomass is considered a sustainable, potentially environmentally sound and a replenishable resource. The biomass categories for bioenergy are analyzed, considering the factors which influence its availability. Biomass energy potential and current use in different regions as well as in Europe is accounted. Also, biomass power as an important alternative for ...
Autori: Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25298

AbstractThe development of technologies for waste treatment, simultaneously with minimizing greenhouse gas emissions, has become a matter of great concern at global level. Biogas systems can help in the fight against global warming by avoiding to escape methane from organic waste, into the atmosphere. Biogas technology is of great benefit to the end-users and the environment by energy, compost and nutrient recovery. Romania is a country with a huge biomass potential. Implementing of biogas techn...
Autori: , Corina Alice Babutanu, Gheorghe Băran
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25300

AbstractThe use of composite fuels using pitcoal and sawdust represents a high perspective. The paper deals with the experimental results focusing on the combustion efficiency of composite fuel briquettes and on the polluting emissions level. A special care is given to the determination of boiler efficiency and to the establishment of exploiting economic conditions, like the supply, cleaning etc. The research of the combustion of pitcoal-wood biomass briquettes is conducted on a 55 kW boiler.A n...
Autori: Gabriel Negreanu, Gheorghe Lăzăroiu, Ion Oprea, Ionel Pisa, Lucian Mihăescu, Radu Indries, Tudor Prisecaru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25301

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

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

AbstractPulp and paper mills generate various quantities of energy-rich biomass as wastes, depending on technological level, pulp and paper grades and wood quality. These wastes are produced in all stages of the process: wood preparation, pulp and paper manufacture, chemical recovery, recycled paper processing, waste water treatment. Energy recovery from wastes of different origin has become a generally accepted alternative to their disposal. Pulp and paper industry expresses an interest in adap...
Autori: Dan Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25307

AbstractNowadays, energetic utilization of biomass, biotechnology attracts a big attention not only from the environmental point of view but also have a social, political and economical impact. According to the Directive 2003/30/EC of the European Parliament and the European Council the emission of greenhouse gases can be reduced by 49% using bioethanol produced by a manufacturing process based on corn, instead of crude oil based fuels. Moreover in Hungary from 1st of July 2007 only gasoline wit...
Autori: , , Gyula Marton, , Jenő Hancsók, Tatiana Yuzhakova
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25312

AbstractThe paper discusses some aspects concerning environmental issues considered from an economic perspective, since economic globalization as well as ecological globalization follows new ways of conditioning each other. In the past the most important thing was the impact of the environmental protection pressure - soil deterioration, water system, the atmosphere and the forests - uponeconomical perspectives. In the recent past years the society had to face the quick growth of the economical i...
Autori: Ionel Bostan, Petru Condrea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25316

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

AbstractSince public concerns about the environmental issues have increased, several universities all over the world have been establishing environmental engineering programs. Environmental engineering programs in Iran at graduate level have been developed since 1990. At the present time, there are ten universities are presenting environmental engineering programs at graduate levels. The environmental engineering education systems of almost all Iran universities are quite traditional. As the env...
Autori: Ahmad Tahershamsi, , Reza Maknoon
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25324

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

AbstractThe removal of Acid Red 398 (AR398) dye from dye-containing solution using coagulation/flocculation process with polyaluminum chloride (PAC) and Alum was investigated. The effect of different parameters involving pH, dosage of coagulant, initial dye concentration, and bentonite as a natural coagulant aid was examined. According to the obtained results, the optimum pH, at which the maximum removal occurred, was about 4 and 5 for PAC and Alum, respectively. However, PAC performed efficient...
Autori: Maryam Hasani Zonoozi, , Mokhtar Arami
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25335

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

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

AbstractThe technological process of basic chemical organic compounds synthesis is included among the economic activities that can affect the environment quality. The environmental impact of chemical organic synthesis is evaluated using the alternative method of global pollution index that considers the concentric circles graphical methodology proposing a scale of the arithmetic mean values for the evaluation scores of each environmental components (e.g. water resources, gaseous emission, soil a...
Autori: Carmen Zaharia, Ilie Murăraşu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25352

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

AbstractThe study on the distribution of oxygen transfer rate in a stirred bioreactor for Propionibacterium shermanii broths underlined the major influence of the presence and concentration of biomass on the interphasic transfer of oxygen. Owing to the bubbles surface blockage by the bacterial cells, the accumulation of biomass from 30.5 to 120.5 g/l d.w. led to the decreasing of kla for about 1.3- 2.4 times. Compared with the simulated broths without biomass having similar apparent viscosity, t...
Autori: Adina Segneanu, Anca-Irina Galaction, Dan Caşcaval
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25364

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

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

AbstractWind energy is being used extensively in various areas as an economically and environmentally friendly type of energy. The number of wind farms is continuously developing and it is foreseen a three time increase in contribution of wind energy to European electricity consumption for next twenty years. A complementary trend, of large potential and expectations, is the revival of the small wind turbines (SWT) (<100 kW), suitable for operating in rural areas with moderate winds. In the ca...
Autori: Irina Tiţa, Doru Calarasu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25383

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

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

Abstract The efficiency of Cd (II) removal from aqueous solutions was investigated using Sphagnum moss peat as sorbent. A 23 orthogonal central composite design was successfully employed for experimental design and analysis of results. The combined effect of the initial solution pH, peat dosage and initial Cd (II) concentration was studied and optimized using Response Surface Methodology (RSM). The optimum values of these variables were found to be pH = 4.72, 14.7 g peat /L and 13.64 mg Cd /L, ...
Autori: Catalin Balan, Corneliu Cojocaru, Petru Bulai, Doina Bilba, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25399

Abstract A new type of wire-cylinder plasma reactor, in which air flow shapes into gas torches is developed. The decomposition performance of toluene in contaminated air flow induced by pulsed corona discharge in the reactor is investigated experimentally under atmosphere pressure and room temperature. It is found that the decomposition efficiency is affected dramatically by air introduction way, and the ejection stimulates the decomposition of toluene compared with the conventional method. T...
Autori: Zhihui Xie, Lingen Chen, Fengrui Sun, Qizheng Ye
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25402

Abstract Green buildings are considered a quick and effective approach to protect the environment by slowing down the consumption rate of primary energy resources and by reducing greenhouse gas emissions. In Europe, appraisals of properties should take into consideration this new feature of buildings by implementing data from Energy Performance Certificates (EPC) into real estate assessment. With this respect, a methodology is proposed and analyzed to be considered in the sales comparison rea...
Autori: Daniela Popescu, Emilia Cerna Mladin, Rodica Boazu, Sven Bienert
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25406

Abstract The paper presents the capacity of biodegradation of selected microorganism, cultivated on liquid culture media to which diesel was added in different amounts, to determine petroleum products and process efficiency. The optimum necessary conditions for development of microbial strains (pH, temperature, the quantities petroleum product / inoculum) have been established with the help of an experimental optimization program, SIMPLEX....
Autori: Dana-Camelia Cocut, Cornel Cojocaru, Mariana Diaconu, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25414

Abstract Phytoremediation is an eco-friendly, cost effective, in situ treatment technology. In the present research study, phytoremediation technology has been employed for remediation of radionuclides namely 137Cs and 90Sr by using living green plant Catharanthus roseus. C. roseus plants were exposed to different activity levels of 137Cs and 90Sr in aquatic condition to assess the efficiency of plants for remediation of radionuclides. C. roseus plants have been found to remediate 70%, 52% an...
Autori: Singh Anamika, Susan Eapen, Madhusudan H. Fulekar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25417

Abstract Up to the present days, the bioprocesses were designed and operated with the aim at achieving some economic, environmental, and social criteria. Sustainability based optimization has to be the next step towards the improvement of the economical, environmental and social parameters of bioprocesses. In this work, sustainability will be treated as an optimization task where the objective function(s) is/are either a performance index or a set of performance indices, subject to economic, ...
Autori: Alexandru Woinaroschy, Dana Irina Ofiteru, Vasile Lavric
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25418

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 As the prevention of the risks is one of the major stakes of any industrial activity, a priori, the evaluation of these risks constitutes one of the principal progress levers of the risks prevention step at a company. It is an opportunity to engage a prevention step in order to preserve health and to improve the employees' safety at work. However, as the companies are increasingly concerned of hygiene and quality, health at the work should be taken into account with the same interest...
Autori: Ghania Chaib, Rachid Chaib, Ion Verzea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25423

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

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

Abstract This study examined the effect of hexane concentration in the inlet gas stream on the treatment performance of a concentric tube internal loop airlift bioreactor with a 7 L capacity, inoculated with a strain of Pseudomonas aeruginosa. The experiments were conducted employing hexane-contaminated air, in 0.62, 1.26, 2.15 and 4.5 g/m3 concentrations at 29 ¹ 1°C. The 100% hydrocarbon removal was verified when effluents containing 0.62 and 1.26 g/m3 of hexane were employed. Under contin...
Autori: Fernando Jorge Santos Oliveira, Leonardo Vazquez, Francisca Pessoa de Franca
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25437

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 Using slag in steel making represents a challenge for road construction industry and decreasing environment interactions also.Steel making slag wit granulations of < 10 mm, which today have not a sure solution, represents the research object. The technological research solutions have aimed reducing CaO free content in these slugs, and reducing slug fraction with granulationof ...
Autori: Florian Zaman, Mirela Gabriela Sohaciu, Ecaterina Matei, Cristian Predescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25439

Abstract At present, dangerous industrial wastes are a main source of environmental pollution because they are stored and deposited improperly. Besides, dangerous industrial wastes could also be a source of secondary raw materials which are not well capitalized. This fact causes substantial losses of secondary raw materials and energy and it is explained by the lack of certain technologies of treatment, capitalization and final removal that are technically and economically sustainable. To ide...
Autori: Neculai Mihailescu, Vasilica Daescu, Elena Holban, Mariana Nicoleta Badea, Jenica Paceagiu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25447

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 paper presents new studies about the removal efficiency of the biochemical treatment process of the Municipal Wastewater Treatment Plant from Constanta city, during 2008. Influent and effluent samples of biochemical treatment stage were collected and ammonium concentration, chemical oxygen demand (CODCr) and biochemical oxygen demand in five days (BOD5) were measured, aiming to study the evolution of the removal efficiency, during 2008. Additional analyses have been performed in ...
Autori: Elisabeta Chirilă, Camelia Draghici, Adriana Puhacel
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25458

Abstract The studies of Cu (II) adsorption were conducted by testing various sawdust types. Two biomass, oak sawdust wood (Querqus robur) and white poplar sawdust wood (Populus alba), have been compared considering their efficiency for copper removal from diluted water solutions. Raw sawdust proved no efficiency in adsorption. Therefore, pre-treatment processes were developed and optimized, to enhance the sawdust affinity for heavy metals adsorption. The optimized pre-treatment conditions are...
Autori: Dora Lucaci, Anca Duta
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25460

Abstract The paper presents the comparative study regarding the turbidity removal using aluminium sulphate Al2(SO4)3*18H2O and polyaluminum chlorides, Aln(OH)mCl3n-m, commercial name, Sachtoklarr 39, in water treatment plant from Covasna City. The parameters that influence the treatment process and the efficiency of turbidity removal were studied. The water characteristic parameters of Basca Mare and Covasna rivers - the two sources of water alimentation for Covasna water treatment plant were...
Autori: Daniela Simina Stefan, Cristina Costache, Viorica Ruxandu, Monica Balas, Mircea Stefan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25462

Abstract Economical development in the Arges district, in the recent years, presents some aspects regarding the compliance with noise environmental regulations. The noise and its impact on human health is one of the most important objectives of the health assurance policy. In this paper a comparative study of urban noise in the principal cities of the Arges district is performed. The data monitoring of noise polution were carried out by using of specific standard methods with a Sonometer Delt...
Autori: Ion Iosub, Silvia Iosub, Victor Grigorie, Aurelia Meghea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25463

Abstract In designing an efficient photovoltaic system, the meteorological data of the system location must be considered. Field data registered over years prove the importance of the implementation site characteristics in the design and optimal exploitation of a PV system, because wetting and atmospheric gaseous and particulate pollution can strongly distort the incident solar radiation. Thus, in addition to the efficiency of the solar module, the tracking efficiency, the clouds crossing fac...
Autori: Dorin Valentin Diaconescu, , Ioana Sinziana Hermenean, Maria Monica Vatasescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25464

Abstract 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 Corrosion control, using inhibitors like, polymerisable porphyrins and multifunctional nanocomposites, is extremely useful in many environments. Phosphogypsum is a waste product resulted from the process of obtaining the phosphoric acid and it can be also used as corrosion inhibitor; in a mixture with other coating materials. Two types of modified porphyrin: Na4TFP Ac - dissolved in KOH and H2SO4 and H2TPP - dissolved in benzonitrile, were tested. The structure characterization of pho...
Autori: Ionel Balcu, Adina-Elena Segneanu, Marius Constantin Mirica, Mirela Ioana Iorga, Corina Amalia Macarie, Iuliana Popa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25477

Abstract In order to improve the photo-efficiency of the electronic process as well as the response into the visible part of the spectrum, TiO2 doping with heavy metal (cadmium, cooper and nickel) have been employed. The objectives of this work are: (a) to prepare doped Me(Cd, Cu, Ni) TiO2 by doctor blade (DB) and spray pyrolysis deposition (SPD) techniques, (b) to characterize the catalysts, (c) to study and compare the activity of the Cd-TiO2, Cu-TiO2 and Ni-TiO2 catalysts on methyl orange ...
Autori: Luminita Andronic, Bianca Hristache, Alexandru Enesca, Anca Duta, Maria Visa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25480

Abstract Various specialists draw attention on the conflict between the industrial civilization and the environment and mention two aspects: 1. The tendency of depletion of natural energy resources, raw materials and food, or consumption of renewable into a rhythm superior to their capacity of regeneration 2. Physical damage and pollution of the environment: water, air and land. It can be said that a sustainable society is the one that shapes its economic and social system so that natural ...
Autori: Dan Duran, Irina Duran, Ciprian Costescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25485

Abstract The motivation of this paper derives from the lack of integrated research and structures for managerial training and consultancy regarding the environment responsibility for eco-business. Also, the research underline the need of training and consultancy for eco-business in industrial small and medium size enterprises (SME) from the West part of Romania. The main aspects that were investigated were: the most needed items regarding the training programs, details about the consulting it...
Autori: Anca Draghici, Monica Izvercianu, Mihaela Vartolomei, Vasile Duran
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25487

Abstract The concept of sustainable development has emerged in order to correlate the need to continue increasing the level of human and increasingly fragile â€?health?? level of environment. At the industrial level, things have moved more quickly. Thus, many companies use waste as fuel, and in some localities they are trying to implement systems for heating cottage on the combustion of waste. They are first to have acknowledged the eco-economical importance of recovery and reuse waste....
Autori: Dan Duran, Irina Duran, Adrian Diaconu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25488

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 The cleanup of environmental pollution involves a variety of techniques, ranging from simple biological processes to advanced engineering technologies. Cleanup activities may also address a wide range of contaminants. Technologies to remediate contaminated soil fall into two principal clean-up approaches: in-situ (which is always done onsite), or ex-situ (which can be done on- or off-site). In-situ treatment deals with contamination without removing material from the ground, while ex...
Autori: Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25501

Abstract The recent results of technical development of low cost GPS systems, geographic information systems, equipment and sensors which are needed to identify the state of the crops and soils have shown a growing awareness in agriculture and related sciences. The actual demand for modern crop management is dominated by the economic pressure and by the social request to increase the transparency of environmental impact of agricultural land. Currently, worldwide there are the public policy a...
Autori: Vergil Marian Muraru, Cornelia Muraru-Ionel, Ion Pirna, Ion Tenu, Petru Cardei
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25504

Abstract This paper presents preliminary results of a batch-scale study assessing the contribution of the multiple phenomena involved in siloxane removal in three-phase biomatrices. Batch scale experiments were undertaken in shaken flasks containing acclimatised culture medium, solid media and siloxane vapours (octamethylcylotetrasiloxane and decamethylcyclopentasiloxane, respectively) under anaerobic gas-phase conditions. Abiotic and biotic phenomena, considered to be possible siloxane remov...
Autori: Gabriela Soreanu, Patricia Falletta, Michel Beland, Kara Edmonson, Peter Seto
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25510

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

Abstract This paperwork is trying to achieve some of theoretical and practical objectives concerning the "agility" concept: to make the differences operational, and to ensure the present surviving and the future development of economical activities in a, more and more, turbulent business environment. Also, the paperwork comes to display a genuine aggregate indicator "Advertising Efficiency Ratio", special developed to help the market players to face - throughout their advertising process - th...
Autori: Gabriel-Petru Luca, Ion Verzea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25513

Abstract The individual physical, chemical, and biological interactions that determine the exposure of plants and animals to chemicals associated with soils are of great importance in the assessment of contaminants bioavailability. Understanding of bioavailability processes is at last needed to improve the scientific basis of risk assessment and is the purpose of the present research. Since bioavailability processes are embedded within existing human health and ecological risk frameworks, so...
Autori: Brindusa Mihaela Robu, Camelia Smaranda, Florentina Anca Căliman, Laura Carmen Apostol, Lucian Vasile Pavel, Maria Gavrilescu, Raluca Maria Hlihor
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25516

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 Economic viability depends upon the sustainability of project effects. The economic analysis of projects should include an analysis of the financial sustainability of project agencies, and the environmental sustainability of outputs and inputs. Practical experience of project effects has drawn attention to the way in which financial and environmental effects impinge on benefit sustainability. Postevaluation experience also shows that, unless such factors are taken into account, econo...
Autori: Luminita Horhota
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25519

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 Life Cycle Cost Analysis (LCC) and Social Life Cycle Analysis (SLCA) are available methodologies for the economic and social assessment of a product or process along its life cycle. Different approaches regarding LCC and SLCA have recently emerged and several hypotheses are currently on testing and discussing. This paper shows existing LCC and a SLCA approaches as well as the methodology applied in the particular case of a paper recycling process. This study gathers part of the Europ...
Autori: Beatriz Ferreira Pozo, Antonio Dobon Lopez, Carlos Lopez Lopez, Maria Calero Pastor
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25529

Abstract Peat moss has been widely used as low-cost adsorbent to remove a variety of pollutants, including organic compounds and metal ions from aqueous effluents. Various functional groups allow such compounds to bind on active sites of peat moss. The adsorbent used in this study was Romanian peat moss sampled from Poiana Stampei (Romania). The adsorption of Co(II) ions from aqueous solutions on Romanian peat moss was studied in batch experiments, in order to establish the influence of initi...
Autori: Corneliu Caramalau, Laura Bulgariu, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25533

Abstract It is well known that the conventional fuels are responsible for environmental pollution. On the other hand, the unconventional sources for energy and biofuels are more environmentally friendly with a lower pollution degree than the conventional ones. Following the European Union Directive 2003/30/EC regarding the use of biodiesel in mixture with conventional diesel and its gradual replacement, Romania has either to produce its own percentage of biodiesel for the mixture or to import...
Autori: Teodor Robu, Alexandru Dragos Robu, Aurel Chiran, Elena Gindu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25540

Abstract Nowadays the global climate change is one of the most significant questions from environmental, social, political and economic point of views. Global warming caused by green house gases emitted into the air is a result of the human activities (Energy Revolution, 2005-2007). The majority of the industrial processes has significant impact to human life and deteriorates the natural environment. In this paper different technologies (three industrial technologies) will be dealt with spec...
Autori: Zsofia Kovacs, Orsolya Kakucs, Janos Lako, , Tamas Fulop, Tatiana Yuzhakova, , Endre Domokos
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25545

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

Abstract The study contains a theoretical and methodological examination of the relationship between the environmental and economic efficiency of firms. It reframes the crucial question, not whether, but when environmental efficiency improvements are profitable for firms? The paper develops the novel concept of eco - profit and try to identifies three gaps in the previous knowledge: (1) the relationship may not be constant across environmental efficiency levels, which means that it needs to b...
Autori: Luminita Horhota
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25557

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

Abstract The Integrated Water Resources Management (IWRM) concept evolved over time, the focus on river basin management, consultation and coordination with all water users, and the use of the â€?polluter pays?? principle being all included in the EU Water Framework Directive (EC Directive, 2000), which forms the basis of water management undertaken in Europe. The role and significance of water resources for sustainable development, as well as the water crisis experienced nowadays are ...
Autori: , Claudia Cojocariu, Corina - Petronela Musteret, Ioana Gabriela Dascalescu, Ionut Caraene
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25559

Abstract 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 White mustard (Sinapis white) is an annual plant of the Cruciferae family originating from the Mediterranean region and is cultivated in Europe and Asia, mainly for its seeds, but also for animal feed or crop rotation. White mustard seed is also an important source of vegetable oil that can be used as fuel. The chemical composition of mustard seed (Sinapis alba) includes glucosinolate (sinalbozida, sinapina free), essential oils, fatty oils (glycerides of oleic acid, linoleic, linole...
Autori: Camelia Ciubota-Rosie, Rodica Diaconescu, Irina Volf, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25561

Abstract 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 work presentes a study of preparation and stability in aqueous medium of complexes obtained by the reaction between Fe(III) with 2-amino-6-methoxy-benzothiazol-sodium sulphonate ??†’1 naphtol-4-sodium sulphonate. In this purpose, the investigation methods applied were as follows: pH-metry, conductometry, and the UV-VIS spectrophotometry. The molar combination ratio of ligand to central metallic atom, and the stability constants for new obtained compounds were determined usin...
Autori: Doina Sibiescu, Gabriela Carja, Ioan Roşca, Laura Chirila, Mihaela Vizitiu, Romen Butnaru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25585

Abstract The removal efficiency of Pb(II) from aqueous solutions by sorption on a bifunctional acrylic ion exchange resin with groups of hydroxamic acid and amidoxime is presented. It was found that Pb(II) sorption potential varies as function of solution pH, initial metal concentration, contact time and temperature. From aqueous solutions with Pb(II) initial concentration of 82.96 ?ŽÂ?g/mL the sorption percentage is 98.64%. The Langmuir and Freundlich isotherms were used to model the Pb(II) ...
Autori: Anca Ceica, Carmen Paduraru, Igor Creţescu, Lavinia Tofan, Violeta Neagu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25586

Abstract 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 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 The former Arad Chemical Fertilizer Plant had an important polluting effect on environment and, although it was shut down in 1990, its environmental heritage still exists. The paper contains a short description of the former plant and its impact on the environment, mainly on the quality of water and soil and emphasizes the effects of polluting heritage that still exists. Today, one of the major problems on the platform of the former Fertilizer Plant is the existence of all concrete b...
Autori: Aurica Grec, Florin Dumescu, Ladislau Klein
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25599

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

Abstract Chlorophenols were selected for this study because most of them are toxic and difficult to biodegrade. They represent a particular group of priority toxic pollutants listed by the US EPA in the Clean Water Act and by the European Decision 2455/2001/EC. The efficiency of advanced oxidation processes for degradation of chlorophenols has been extensively documented. The catalytic wet hydrogen peroxide oxidation process, involving oxidation with H2O2 and solid catalysts in mild reaction ...
Autori: Brindusa Dragoi, , Cezar Catrinescu, Daniela Arsene
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25601

Abstract Some samples consisting in silica functionalized in different degrees with dihydroxy-azomethine groups have been tested as sorbents for copper (II) ions from aqueous solutions in different conditions. An indirect monitoring procedure for the complexing process was approached: UV-VIS absorption intensity ? time variation for the metal-containing solution in which complexing silica was soaked. In order to find the conditions in which the maximum efficiency in the metal absorption can b...
Autori: Ciprian-George Piuleac, Maria Cazacu, Silvia Curteanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25608

Abstract 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 The olive mill wastewater (OMW) is a stable emulsion composed by water, olive pulp and residual oil. An approach for using this waste as a renewable resource is of greater interest. Several authors have been studding physicochemical treatment methods. However, the biological treatments allow not only the treatment, but also the effluent valorization, by producing several valuable products. This effluent is also a source of natural antioxidants and its extraction is economically attra...
Autori: Carina Pereira, Cristiana Goncalves, Isabel Belo, Madalena Alves
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25635

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

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

? POLLUTION PREVENTION, A KEY TO ECONOMIC AND ENVIRONMENTAL SUSTAINABILITY ? A COMPARISON BETWEEN DIFFERENT SCENARIOS OF ROMANIAN MUNICIPAL SOLID WASTE TREATMENT BEFORE LANDFILLING ? A STUDY ON ENERGY CONSUMPTION IN ROMANIA ? ENVIRONMENTAL INFLUENCES ON STRESSED METALLIC SURFACES ? ASPECTS OF HYDRODYNAMICS AND MASS TRANSFER IN DIFFUSED AERATION SYSTEMS ? THE STATUS OF SOME SELECTED HEAVY METALS IN ROADSIDE SOILS OF BURSA PROVINCE, TURKEY ? PREPARATION AND CHARACTERI...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25656

? AN ASSESSMENT OF OPERATIONAL PARAMETERS FOR THE REMOVAL OF CHLOROPHENOLS FROM WASTEWATER ? ENVIRONMENTAL SCIENCES: A PSYCHOLOGICAL-BEHAVIORAL MODEL FOR RESEARCHERS ? ECOLOGICAL AGRICULTURE: DYNAMICS OF THE BIOLOGICAL ACTIVITIES IN SOILS CULTIVATED WITH MAIZE UNDER THE INFLUENCE OF ORGANIC FERTILIZATION ? SOLAR-ASSISTED JOULE-BRAYTON ENGINES USED TO REDUCE CARBON DIOXIDE EMISSIONS ? STUDY OF THE ENVIRONMENTAL EFFECTS OF HEATING SYSTEMS ? MIXED JET-VORTEX METHOD FOR ...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25662

? COMPACT MICROPULSE BACKSCATTER LIDAR: AIRBORNE AND GROUND-BASED APPLICATIONS ? STUDIES OF THE IMPACT OF AEROSOL OPTICAL PROPERTIES ON CLIMATE CHANGE PROCESSES ? A STUDY OF THE AEROSOL OPTICAL PROPERTIES AT TWO AERONET STATIONS FROM ROMANIA ? COMPLEMENTARY ATMOSPHERIC URBAN POLLUTION STUDIES IN THE NORTH-EAST REGION OF ROMANIA, IASI COUNTY ? ?NGSTR?M TURBIDITY IN THE LOWER LAYERS OF THE TROPOSPHERE ? LIDAR MONITORING OF ANTHROPOGENIC POLLUTION AND NATURAL PHENOMENA ...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25665

? Environmental Engineering and Management Journal, Vol. 9 Nr. 4 ? THE PROTECTION OF EQUIPMENTS USING VOLATILE INHIBITORS ? CONTINUOUS SURFACE TEMPERATURE MONITORING TO ESTIMATE SENSIBLE HEAT LOSS BY BUILDING FINISHES ? RECYCLE OF POLYAMIDE DYEING WASTEWATER FOLLOWING DECOLORIZATION WITH POLYMERIC SORBENTS ? PERFORMANCE EVALUATION OF AMINO ACID SALT-BASED COMPLEX ABSORBENTS FOR CO2 CAPTURE ? ADSORPTION EQUILIBRIUM STUDIES ON COPPER (II) IONS REMOVAL BY NATURAL WASTE USIN...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25666

? HYDROGEL MICROSPHERES BASED ON ENVIRONMENTALLY FRIENDLY POLYMERS WITH POTENTIAL BIOMEDICAL APPLICATIONS ? STUDY ON THE MIXING EFFICIENCY IN A BASKET BIOREACTOR WITH IMMOBILIZED YEASTS CELLS ? MANAGEMENT OF WASTE FROM ELECTRICAL AND ELECTRONIC EQUIPMENT IN CYPRUS ? A CASE STUDY ? SEPARATION AND CHARACTERIZATION OF ANTHOCYANINS BY ANALYTICAL AND ELECTROCHEMICAL METHODS ? AN INTEGRATED DECISION AID FOR IDENTIFYING AND PRIORITIZING STRATEGIES IN FOREST MANAGEMENT ? INFLUEN...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25668

Carbon issue is becoming more important all over the world. Plate glass is a typical kind of building materials and the life cycle carbon emission of plate glass is a big contributor, resulting from the energy consumption in the stages of its life cycle which includes four aspects: raw materials acquirement, materials transportation, production and embodied consumption of energy carriers. Based on the relevant data calculation from China’s condition, the life cycle carbon emission of plate gla...
Autori: Meng Liu, Wenlong Li, Qunying Cheng, Yueer He, Xinyun Caohttp://www.ecozone.ro/reviste.php?RID=25672

The combustion process plays the important role to improve performance and emission of diesel engine. To improve the rate of combustion process, the fuel-air mixing process should be accelerated. In this paper, based on the Double Swirl combustion chamber, from the macroscopic characteristics and simulation analysis, the effect of the incylinder forced swirls on performance and emission of diesel engine was studied. The results indicated that due to the incylinder forced swirls, the distribution...
Autori: Chang-Yuan Wang, Fu-Shui Liu, Xiang-Rong Lihttp://www.ecozone.ro/reviste.php?RID=25673

The removal efficiency of p-xylene from gas stream was experimentally investigated in a dielectric barrier discharge (DBD) reactor, which was combined with catalyst, MnO2/Al2O3 pellets, in the discharging and the afterglow area, respectively. The CO2 selectivity of the two kinds of structure was also discussed. The results showed that in both the situation, the synergetic removal efficiency of p-xylene by the DBD-catalyst hybrid system increased with increasing the discharge power and decreasing...
Autori: Hongxia Liu, Yun Liuhttp://www.ecozone.ro/reviste.php?RID=25674

Material Flow Analysis (MFA), as a method of Industrial Ecology (IE), is a useful tool to measure and analyze the material metabolism or physical dimensions of a society’s production and consumption at various scales. However, there are different MFA frameworks and points corresponding to different researching scales. This paper proposes to introduce a physical Input- Output Table (PIOT), as means to establish the Eco-industrial parks MFA model (EIPs-MFA) and indicator systems, for analyzing t...
Autori: Yao Shi, Rusong Wang, Jingru Liu, Jianxin Yang, Tianzhen Juhttp://www.ecozone.ro/reviste.php?RID=25676

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

Rhizobag incubation experiments were conducted to study microbial biomass carbon (MBC), microbial biomass nitrogen (MBN), soil respiration and enzyme activity (urease and phosphatase) in the rhizosphere soil of three different wetland plants and its influence on the removal of total organic carbon (TOC) and total nitrogen (TN). MBC, MBN, soil respiration and enzyme activity were higher in the rhizosphere than in the non-rhizosphere soil of the wetland plants. Microbial activity in the rhizospher...
Autori: Defu Xu, Hua Fang, Xianghua Xu, Xiaoli Zhao, Yingxue Lihttp://www.ecozone.ro/reviste.php?RID=25679

Treatment of mustard wastewater with high salinity and organic concentration by electrochemical degradation was studied. The influence of the critical parameters of electro-oxidation such as pH, current density, salt concentration and energy consumption on the removal efficiency of COD and NH3-N was studied using porous carbon electrode. It was found that the COD and NH3-N removal efficiency could be enhanced by increasing pH, current density and salt concentration. The current density of 0.032A...
Autori: Hainan Ai, Qiang He, Hongxiang Chai, Xuebin Hu, Tengrui Longhttp://www.ecozone.ro/reviste.php?RID=25685

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

The paper analyses the removal efficiency and fluorescence spectroscopic characterization of landfill leachate dissolved organic matter (DOM) fractions in the combined stripping, fenton oxidation, sequence batch reactor, and coagulation process. The high contents of DOM of landfill leachate in each process unit were fractionated into HA, FA, and HyI. The result was the combined process availability for effective removal of DOM fractions. The removal rates for DOM, HA, FA and HyI were 91.9%, 97.1...
Autori: Zhiping Liu, Jin-song Guo, Fang Fanghttp://www.ecozone.ro/reviste.php?RID=25702

Because the green building industry starts late in China, both the government and developers have a vague view on incremental cost conception, component and algorithm of water-saving projects for green building. According to the comparative analysis of the project and economic efficiency between green building and traditional building in water-saving and water resource utilization aspect, this material presents the conception, component, algorithm and calculating method of the incremental cost i...
Autori: Qiang He, You-Zhi Hao, Fang Zhao, Hong Xiang Chaihttp://www.ecozone.ro/reviste.php?RID=25703

Fuel injection system, intake system and the geometric shape of combustion chamber are the three key factors to the fuel-air mixture and combustion process for diesel engine. long with the need of high power density in diesel engine, the pressure of intake is higher increasingly. Together with the effect of high pressure fuel injection, the fuel-air mixture and combustion process is hard to spread as usual. In this circumstance, the performance of power, heat efficiency and emission in diesel en...
Autori: Shang Yong, Liu Fu-Shui, Li Xiang-Ronghttp://www.ecozone.ro/reviste.php?RID=25704

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

Adding ferric or bio-ferric agent is method to improve membrane fouling and prolong membrane life.This paper analyses the influence of ferric content on treatment effect of printing and dyeing wastewater, through examining the change of COD and dyestuff content in supernatant with the change of ferric content in sludge and in supernatant. COD in supernatant is reduced with increase of ferric content in sludge, and the dyestuff content in supernatant is reversed, which might be due to the adsorpt...
Autori: Shifeng Ji, Chunmei Gao, Hong Yang, Ming Chu, Chunfeng Wanghttp://www.ecozone.ro/reviste.php?RID=25711

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

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

Abstract:Under the circumstances of the deficit in total energetic resources of the Republic of Moldova, non-traditional sources as wind,solar and hydraulic energies are very opportune. Concurrently with the conventional energy resources (fossil fuels, atomic energyetc.), wind energy begins to regain its positions not only from ecological, but also from economical point of view. Also, the windenergy conversion systems could play a significant role in the production of mechanical, electrical ener...
Autori: Anatol Sochireanu, Ciupercă Rodion, Ion Bodnariuc, Ion Bostan, Ion Dicusară, Ion Sobor, Iulian Malcoci, Marin Guţu, Nicolae Trifan, Oleg Ciobanu, Radu Ciobanu, Radu Crudu, Valeriu Dulgheru, Viorel Bostan, Vitalie Gladîş
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25717

Abstract:The textile industry uses high quantities of water which in many cases are disposed to the environment with inadequate treatment.In this work the effluents from the polyamide textile industry containing Bemacid Gelb, Bemacid Rot and Bemacid Blau weretreated by heterogeneous photodegradation. Treatment performances have been evaluated in terms of conductivity, turbidity, totaldissolved solids (TSD), chemical oxygen demand (COD), total organic carbon (TOC), biochemical oxygen demand (BOD5...
Autori: Luminita Andronic
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25720

Abstract:Point of zero charge (PZC) is defined as the condition at which the surface charge density of a material equals to zero and, formost of the solids it is strongly pH dependent. The PZC can be controlled by tuning the solid surface properties (crystallinestructure, morphology) and by a proper environment control, thus it is important to evaluate the PZC for a certain type of material,in given working conditions, for enhancing the efficiency in the targeted application (e.g. layer by layer...
Autori: Laura Maria Bertus, Radu Adrian Carcel
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25721

Abstract:An efficient conversion of kinetic energy of river waters into mechanical or electrical energy without building barrages isprovided by micro-hydropower stations. Increased efficiency is achieved by an optimum position of the blades withhydrodynamic profile. The formulation used to compute the hydrodynamic forces is an inviscid - boundary layer model. Microhydropowerstation provides kinetic energy conversion of river water into mechanical or electrical energy without buildingbarrages. In...
Autori: Anatol Sochireanu, Ion Bostan, Ion Dicusară, Nicolae Trifan, Oleg Ciobanu, Radu Ciobanu, Valeriu Dulgheru, Viorel Bostan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25723

Abstract:In order to comply with the 20-20-20 Directive, by which every EU member state has pledged to produce 20% of the energy byusing renewable sources, solar energy for heating became a much addressed to topic, as a viable and up-scalable option. Researchis devoted to increasing the efficiency while reducing the production costs and the development of novel solar thermal systemswith dish collectors can contribute with innovative solutions. Thus, the first step in the development process, the...
Autori: Daniela Ciobanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25730

Abstract:A specific topical issue both for small hydropower plants and wind turbines refers to the discrepancy between the relatively lowspeed of the water turbine/wind rotor and relatively high speed of the electric generator: the turbine/rotor has higher performancesat lower speeds, while the generator performances are increasing with the speed. Usually, this problem can be solved connecting aproper speed increaser between the turbine (increaser input) and generator (increaser output). Besides...
Autori: Codruta Jaliu, Oliver Climescu, Radu Saulescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25732

Abstract:The demand for new and high performance products in the automotive industry is increasing exponentially and this trend imposesinnovative concepts for cars. The future solutions for the automotive industry may find their answer in the fabricationtechnologies and also in alternative propulsion and energy production.The car design field cannot ignore the global economic crisis, imposing new approaches in terms of materials and cost effectivetechnologies and by the means of environmental pr...
Autori: Mihai Comşiţ
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25733

Abstract:In order to capture as much solar energy as possible, the photovoltaic converter has to follow the sun movement during a day; thiscan be achieved by a tracking system. Most tracking systems have complex and costly structures that can provide wide anglevariations. This paper presents a geared linkage that is build up by a planetary system of gears fitted on a linkage, and thus helpsin reaching wide angles. Starting from a patented linkage, which reaches ≈200° angular strokes, by a...
Autori: Dorin Diaconescu, Ioana Hermenean, Nora Creanga
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25736

Abstract:The European countries have few fossil fuel reserves and the main goal of the Lisbon strategy is to promote the utilization ofrenewable energy sources. In Hungary, because of the huge amount of thermal water reserves, geothermal energy might be one ofthe energy sources which can help to raise the share of renewables in the energy market of the country. Beside the positive aspectsthe use of thermal water for energy purposes have some important physical, environmental and economical aspec...
Autori: Ferenc Kalmár, Imre Csáki
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25738

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

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

Abstract:Composite manufacturing from plastic wastes of polyethylene terephthalate (PET) type, sand-blasting represents a materialrecovery of the wastes. This process can be achieved, with the purpose of reducing the material consumption which is in deficit,production costs, and the duration of the technological processes.Thermoplastics composites obtained by a melting process at 170-200 oC, wastes incorporation and solidification in forms replacesuccessfully the thermo rigid composites obtained...
Autori: Ioan Ropotă, Marcela Muntean, Mihai Bratu, Ovidiu Dumitrescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25741

Abstract:The national legal framework harmonization, including in areas concerning environmental protection, with the Europeanstandards in the field, is a goal of paramount importance with regard to Romania's accession to the EU structures. From thisperspective, all the organizations, agencies and individuals operating in this field must be acquainted with the European Union'sprograms of environmental action.In this context, the paper aims to provide an overview of the relevant trends and develo...
Autori: Constanţa Enea, Constantin Enea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25742

Abstract:Methyl orange and methylen blue are two dyes resulted from the textile industry. They are not raising just esthetical problems, butthey are toxic and hence harmful to aquatic animals. The aim of this study is to test the capacity of three types of sawdust (oak,willow and white poplar) and mixed substrates, sawdust: fly ash (FA), to remove the methyl orange (MO) and methylen blue(MB) from wastewater. The influence of contact time, solution pH and initial concentration of dyes on the blea...
Autori: Anca Duta, Dora Lucaci
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25752

Abstract:The paper presents the results obtained when using one ketonic Mannich base BM (1-(2’-hydroxyphenyl)-3-(1-piperidinylamino)propan-1-one hydrochloride) as corrosion inhibitor in saline environment, for different types of carbon steels,with various alloying elements. The Mannich base was synthesized and used in corrosion experiments, in concentrations varyingfrom 0….1300 ppm. The corrosion experiments were performed by potentiodynamic polarization studies, with 50 mVs-1 scanrate. The ...
Autori: Andreea Milea, Cristina Bogatu, Ileana Manciulea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25754

Abstract:Hydrothermal synthesis was used to obtain nanostructured TiO2 based nanopowders. There were prepared pure and ZrO2 dopedcompositions consisting mainly of anatase phase with crystallite size up to 20 nm. The agglomerates of the as-synthesizedmaterials had dimensions ranging from a few hundreds nanometers to 200 microns. The investigations concerning the thermalbehavior revealed the presence of an exothermal effect at around 550oC which could indicate a possible phase transformation ofana...
Autori: Adrian Mihail Motoc, Anca Duta, Oana Raita, Radu Adrian Carcel, Radu Robert Piticescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25758

Abstract:The aim of this paper is to present an assessment of the importance of mobility in the context of lifelong learning in the field offuture human resources - students, in particular - in order to contribute to sustainable development. Developing, adapting andbroadening the range of skills of individuals to create and fill the jobs of the future are the most important contemporary Europeanaim. The process of improving workforce skills involves a mutual gain for both employers and companies...
Autori: Crina Radulescu, Madlena Nen, Radu Stoika
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25759

Abstract:The paper presents a computer modelling and experimental validation for the thermodynamic performance of parabolic troughsolar collectors (PTSC) used in a micro-combined cooling,e heating and power (mCCHP) system. The thermal efficiency, fluidoutlet temperature, heat gain and heat and optical losses of the collector are calculated depending on the collector geometry,optical properties, fluid properties, fluid inlet temperature and flow rate, solar insolation, wind speed and ambient temp...
Autori: Ion V. Ion, Lizica Simona Paraschiv, Spiru Paraschiv
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25760

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

Abstract:The increasing of energy consumption and fossil fuel emissions (especially CO2, SO2 and NOx) and the limitation of crude oilreserves, determined a growing trend toward renewable energy technologies, like solar, wind, geo-thermal energy and biomass forbiofuels.From all the renewable energies sources, biomass attracts more and more interest being a renewable resource with economicpotential, which can be found all over the world, with positive environmental properties due to neutral emissi...
Autori: Anca Sauciuc, Angela Potetz, Georg Schlaub, Gerald Weber, Hermann Hofbauer, Lucia Dumitrescu, Reinhard Rauch, Ziad Abosteif
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25762

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

Abstract:A thermodynamic model for studying the overall efficiency and power output of a solar assembly using a Stirling engine ispresented. It is based on the application of the energy and exergy balance equations to the system components. The results of theproposed model are generated as a function of solar incident radiation whose analytical estimation is presented. The numericalapplication is set for a solar assembly operating in Bucharest, composed by a parabolic dish mirror, a plane receiv...
Autori: Adina Gheorghian, Alexandru Dobrovicescu, Camelia Stanciu, Dorin Stanciu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25764

Abstract:The state support programs on retrofitting buildings built with prefabricated technology has a decade-long history in Hungary.The launch of the Green Investment Scheme (GIS) in 2009 has introduced a new path: the performance-oriented approach. Thenew model is designed for implementing more complex renovations on a deeper level. The system is in accordance with theEPBD (EPBD, 2002) and exact savings must be quantified for all projects. The present paper outlines the past and the present ...
Autori: Attila Talamon, Tamás Csoknyai
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25765

Abstract:The paper presents a method to improve the efficiency of a photovoltaic (PV) string by employing a mono-axis trackingmechanism. The tracking system was optimized so that it has minimum energy consumption during tracking. The PV stringsimultaneously changes the daily position using a linear actuator which transmits the motion to all modules by a rack-pinion gearmechanism. The system is designed in virtual prototyping concept with the following software solutions: for the solid modeling -...
Autori: Cătălin Alexandru, Nicoleta-Irina Tatu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25766

Abstract: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:The present study proposes a comparative analysis on the clean electric energy response given by two types of PV (photovoltaic)tracking systems implemented on the same location: the azimuth and the pseudo-equatorial. The analysis is done based on analgorithm applied on the two-axes and one-axis systems. The tracking is done according to various laws, obtained by combiningdaily, seasonal and annual tracking programs. The algorithm and the comparative analysis are exemplified, by numerica...
Autori: Dorin Diaconescu, Maria Monica Vatasescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25770

Abstract:Ash is a waste that can be an efficient substrate in wastewater treatment for the immobilization of heavy metals and for dyesremoval. For an up-scalable wastewater treatment process, efficient substrates, with relatively constant behavior are needed andmodifying the adsorbent surface can be a feasible solution. Fly ash, resulted from coal burning, and wood ash are mixtures mainlycontaining metal oxides and carbon in various proportion, depending on the initial raw material.The paper pre...
Autori: Maria Visa, Mihaela Nacu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25771

Abstract:The oxidation of low grade complex concentrates (Cu, Pb and Zn) in aqueous media (weak alkaline) oxidized nonferrous metalsconcentrates is carried out at high pressure. Leaching is the subsequent processing step in metal extraction. The paper studies theinfluence of some parameters (temperature, time, L:S ratio, excess) on the leaching efficiency of nonferrous metals from oxidizedconcentrate. The optimum parameters determined are: S/L ratio of 10/1, 25% reactive excess, leaching tempera...
Autori: Cornelia Lupu, Dragoş Taloi, Liliana Gherghe, Luminita Mara, Teodor Velea, Vasile Predica
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25774

Abstract:This study aimed to assess the coagulation performance using simple aluminum sulfate (Alum) and pre-hydrolyzed polyaluminumchloride (PACl) coagulation agents by conventional global parameters, i.e., turbidity and organic matter expressed by totalorganic carbon (TOC) and chemical oxygen demand (COD), and non-conventional spectrophotometric parameters.Non-conventional spectrophotometric parameters, expressed as absorbance recorded at different wavelengths, i.e., A254, A280,A365, allowed d...
Autori: Florica Manea, Georgeta Burtică, Ilie Pisoi, Smaranda Masu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25777

Abstract:In this paper, photo-catalytic process for treatment of phenolic wastewater by TiO2 nano powder immobilized on concrete surfacein a recirculation hydraulic flow was investigated. The process affected by different operational conditions that the optimum onescould be obtained from variables interchange. Taguchi method as a proper method for design of experiments and optimizationwas used to find optimum conditions. Selected five parameters at four levels were consists of initial phenol con...
Autori: Bita Ayati, Hossein Ganjidoust, Mohammad Delnavaz, Sohrab Sanjabi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25778

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

Abstract:Lightweight materials are more viable for use in invariably hot or cold climates than in temperate climates. However, it is possibleto use lightweight construction systems and specifically membranes even in housing buildings in temperate climate areas, if theirproperties are well explored, allowing better environmental performance and cost effectiveness than conventional solutions. In theouter skin and in dividing elements, architectural membranes can be used as thermal regulators, for ...
Autori: António Pedro Reis, Joăo Pedro Couto, Paulo Mendonça
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25781

Abstract:The present paper is concerned with the determination of the appropriate subsidy level for environmental friendly technologyvehicles. For this purpose, the economic calculation of the corresponding environmental benefit is necessary, which is realizedthrough the calculation of the negative environmental externality that could be avoided, if the examined subsidies have beenestablished. For the calculation of the latter, the EcoSenseLE tool has been applied here, using life-cycle airborne...
Autori: Dimitrios A. Georgakellos
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25782

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:One of the basic conditions for the operation of nuclear installations is security operation. The complexity of the phenomena inheavy water detritiation plants, determine the use of advanced equipment for technological processes involved. Pilot Plant forTritium and Deuterium Separation developed the cryogenic technology of tritium separation from tritiated heavy water. Theprocess is based on an catalyzed isotopic exchange module, where the tritium is extracted from tritiated heavy water...
Autori: Sorin Gherghinescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25787

Abstract:In this study, removal of nitrate from aqueous solutions was investigated using an anion exchange resin, Purolite A-520E. Theinfluence of several experimental parameters, such as initial solution pH, resin dosage, phase contact time, initial concentration ofnitrate ions from aqueous solution, and temperature, has been examined in batch experiments. The results of this investigationreveal that the ion exchange process is favored at the initial solution pH (around) 6.8. The resin studied ...
Autori: Anca Ceica, Igor Creţescu, Ion Balasanian, Laura Bulgariu, Liliana Lazăr
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25788

Abstract:Experimental research evaluated the possibilities of air treatment efficiency of a cylindrically shaped bio-charge, namely straw, toremove volatile organic compounds from the air. As determined during experiments, the air treatment efficiency of the straw biochargefor acetone removal reached 97.3%, while for butanol removal the efficiency was 86.0%. It has been determined that, withvolatile organic compound concentrations increasing biological air treatment efficiency is decreasing as h...
Autori: Alvydas Zagorskis, Petras Vaitiekunas, Pranas Baltrenas, Raimondas Leopoldas Idzelis,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25790

Abstract:Recovery of residual ammonium nitrogen (NH4+-N) from dissolved air flotation (DAF) pretreated poultry slaughterhouse wastewater was studied by means of magnesium ammonium phosphate hexahydrate (MgNH4PO4.6H2O, MAP) precipitation in a lab-scale batch study. The maximum recovery values were obtained as 80.2%, 97.1% and 53.6% with the addition of MgCl2.6H2O + KH2PO4, NaH2PO4.2H2O + MgSO4.7H2O, and MgOHCO3 + 85% H3PO4 at pH 9.5, respectively. Based on the physicochemical findings, subsequent...
Autori: Aylin Gunay, Idil Ozis, Ilter Turkdogan-Aydinol, Kaan Yetilmezsoy
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25797

Abstract:In this paper, the effect of the ultraviolet light on various pathogen microbial strains present in drinkable groundwater samples (wells) from Constanţa County, Romania (localities Moviliţa, Topraisar, M. Kogălniceanu) was analyzed. The investigations were conducted in an original UV-C irradiation prototype installation for water samples. The efficiency of this prototype in destroying the pathogen agents present in drinkable groundwater was established by monitoring the p...
Autori: Bogdan Negreanu-Pîrjol, Elena Gorun, Remus Zăgan, Sabina Zăgan, Ticuţa Negreanu-Pîrjol
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25802

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 insufficient waste collection service and scarcity of studies about municipal solid waste (MSW) generation in rural communities from developing countries has negatively influenced how MSW is managed by residents and authorities. This has brought about pollution and affected the quality of life of the residents from those communities. This study aims to determine the quantity and type of household waste generated, as well as to know the perception of the community on MSW management i...
Autori: Carolina Armijo, Paul Taboada-González, Quetzalli Aguilar-Virgen, Sara Ojeda-Benítez
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25810

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

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

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

The environment is an intrinsic component of most tourism products, and in segments, such as rural and outdoor tourism, it is the reason for their existence. In recent years, tourists have been including respect for the environment as a factor in their purchasing decisions; and many businesses are using this factor as a differential component to increase their market competitiveness. However, few studies have examined the use of the environment by tourism firms as a competitive strategy and what...
Autori: Alejandro García-Pozo, José-Luis Sánchez-Ollero, Macarena Marchante-Lara
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25820

Measuring progress of the tourism destinations in the area of sustainability has now become one of the major challenges facing policymakers action. Sustainability is a dynamic concept. In fact, in reality, it really can be measured is not �sustainability�, but �progress towards sustainability�, bearing in mind that this is not an ideal target linked to a fixed state of harmony, but a continuous process of adjustment and reorientation of tourism development to achieve the balance between ...
Autori: Juan-Ignacio Pulido-Fernández, Marcelino Sánchez-Rivero, Yaiza López-Sánchez
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25821

The relationships between economic growth, environmental sustainability and energy are of great interest among researchers and policy makers. One of the theoretical conclusions that have received most attention is the convergence of the per capita carbon emission levels. But empirical results of theoretical growth models that include the environmental variable or estimated Environmental Kuznets Curve are not conclusive. This paper uses a multivariate state-space model to examine the process of c...
Autori: Gema Fernández-Avilés, Jose Mondejar-Jimenez, Josep Illa, Manuel Vargas-Vargas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25823

An iron(Fe+3) oxide/hydroxide nanoparticles-based agglomerates (AggFe) suspension adsorbent was synthesized for efficient, cost-effective phosphate removal. A strong effect of AggFe concentration and pH level of water containing phosphate on removal efficiency was shown. It was found that phosphate adsorption onto the AggFe suspension may be described by pseudo-secondorder reaction kinetics and the Langmuir isotherm model. The unique adsorption properties of synthesized AggFe adsorbent are demon...
Autori: Grigori Zelmanov, Raphael Semiat
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25829

This paper presents a study on the integration of two advanced treatment processes for the removal of priority organic processes from wastewaters: catalytic oxidation (Fenton homogenous process) followed by ultrafiltration. The aim of this study was to assess the removal efficiency for 4-chlorophenol (used as model pollutant), as well as the decrease in effluent toxicity in various processes conditions. The experiments have mainly focused on studying the effect of the oxidant dose of the catalyt...
Autori: , Cezar Catrinescu, Corina Petronela Musteret, Daniela Arsene, George Barjoveanu, Petru Apopei
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25834

Human nature constantly tends to place personal interest first, to the detriment of general interest. In this respect, tax and duty payers have always attempted to evade payments on their tax liabilities, resorting to various tactics, as they view such compulsory payments as detrimental to their wealth and income. On the other hand, the state seeks to maximise its receipts from taxes, duties, excises etc. In Romania, after 1990, an entire range of anti-tax reactions occurred in the sphere of pub...
Autori: Carmen Sandu, , Marius Vorniceanu,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25835

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

� SUSTAINABILITY IN ENVIRONMENTAL REMEDIATION � EVALUATING THE CLIMATIC CHANGES IN THE HYDROLOGICAL FLOW REGIME OF THE MOLDAVIAN AREAS � ENSURING ECONOMICAL AND FINANCIAL SUSTAINABILITY: STATE FISCAL CONTROL - A WAY TO PREVENT AND REDUCE TAX AVOIDANCE � COMBINED OXIDATION AND ULTRAFILTRATION PROCESSES FOR THE REMOVAL OF PRIORITY ORGANIC POLLUTANTS FROM WASTEWATERS � THE FREE LEVEL UNIFORM POST-DARCY FILTRATION THROUGH A SPHERE-MADE HOMOGENOUS MEDIUM � HSLA ST...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25838

The reactive extractions of propionic acid with TOA dissolved in three solvents with different dielectric constants (dichloromethane, butyl acetate, n-heptane) without and with 1-octanol as phase modifier have been comparatively analyzed. The results indicated that the mechanism of the interfacial reaction between acid and extractant is controlled by the organic phase polarity. In absence of 1-octanol, the structures of the extracted complexes are RCOOH.Q2 for dichloromethane and butyl acetate, ...
Autori: Alexandra Cârlescu, Anca-Irina Galaction, Dan Caşcaval, Mădălina Poştaru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25938

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

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

Biomass is a very interesting natural source to obtain renewable energy as well as chemical products based on a renewable feedstock. Fuel produced from renewable resources is widely regarded as an option to substitute traditional fossil fuels and thus to answer to the adjunct climate debate. For the production of chemical substances from renewable substrates many process options are in investigation worldwide at the moment. However the ecological benefits of these technological options have to b...
Autori: Anton Friedl
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25856

The present study describes the preparation of a filtering medium from a polymeric cellulosic support (filter paper) by functionalization with monochlorotriazinyl-β-cyclodextrin. The permanent immobilization of cyclodextrins confers the new material special properties and the potential for a better decontamination of liquid and gaseous effluents. The structure, physicomechanical and filtration properties of the filter paper, successfully functionalized with MCT-β-CD, have been emphasiz...
Autori: Ana-Maria Grigoriu, Constantin Luca, Florin Ciolacu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25862

In this study, we have tested the possibility of utilization of three types of natural low-cost sorbents: (Sphagnum moss peat, natural moss peat and alkaline treated moss peat) for the active biomonitoring of air quality from Căliman National Park area (Dorna Basin), during of two months (September – October 2010). The concentrations of some heavy metals (Pb, Cd, Cu, Mn and Fe) in the sorbent samples were used as an indicator of the level of air pollution in the studied region. After expo...
Autori: Iulian-Ovidiu Sandu, Laura Bulgariu, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25868

Among the different types of waste products tested, the bark of different Pinus species have been identified as a promising class of low- cost sorbents for heavy metal binding. In this context, the potential of Romanian pine bark wastes as green and economical sorbent for cadmium (II) ions removal from aqueous solutions has been tested in batch conditions as function of initial pH, contact time, sorbent dose, metal ion concentration and temperature. The equilibrium data at three different temper...
Autori: Anca Miron, Brindusa Robu, Carmen Paduraru, Lavinia Tofan, Roxana Laura Mihailescu Amalinei
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25871

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

Nowadays, advanced wastewater treatment has become a stringent step for the removal of priority organic pollutants and many technologies have been proposed in order to achieve effluents with a superior quality for recycling or reuse purposes. This research is focused on the possibilities of using an integrated process, comprising 2 stages: the advanced oxidation process of ultrasonication and a membrane separation process, ultrafiltration. The main objective of the study is to assess the efficie...
Autori: , Daniela Cailean
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25880

Fly ash and fly ash based zeolites are inorganics used for improving soil quality. In the current paper, the hydrothermal modification of fly ash was studied. Three methods have been employed for this purpose. The first method involved the use of an autoclave, where synthesis has been performed at a temperature of 120 0C and a treatment time of 4 to 8 hours. Within the second method, the modification of the ash at a temperature of 600 0C by fusion was carried-out. In this method, a mixture of as...
Autori: Corneliu Munteanu, Daniel Bucur, Lacramioara Rusu, Maria Harja, Marinela Barbuta, Ramona Carla Ciocinta
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25885

The Landra Wastewater Treatment Expert System is developed by the University of Pannonia (Hungary, Veszpr?Šm). The flexible, simulation-based software provides the possibility to choose the built-in mathematical models or the user may create a new one arbitrarily. A customized program codes can be created according to the technological description, the input data and the control strategy provided by the user. This way the efficiency and reliability of the system is significantly enhanced. An imp...
Autori: , Endre Domokos, Tatiana Yuzhakova, Viola Somogyi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25888

This paper describes the scientific framework established within doctoral and postdoctoral programs designed to contribute to a thorough understanding of the specific processes involved in environmental engineering and protection, as to improve the environmental management and performance in an efficient and sustainable way. A coherent conceptual framework is developed for the analysis and management of some specific approaches in engineering and environmental protection (pollution phenomena, de...
Autori: Cristina Ghinea, Daniela Tudorache Fertu, Isabela Maria Simion, Laura Carmen Apostol, Mădălina Petraru, Maria Emiliana Fortuna, Maria Gavrilescu, Petronela Cozma, Raluca Maria Hlihor
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25891

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

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

The present study was carried out to highlight the areas where heavy metal content in the soils from Rodna mining perimeter exceeds normal limits and to attempt to reduce the concentration of free heavy metal ions by using natural zeolite from the Dej tuff. In order to emphasize the heavy metal content and their accumulation in soil in Rodna region, 35 soil samples were collected from the upper and deeper layer (about 0-10 and 10-20 cm depth) and analyzed to determine total and free Cu, Pb and Z...
Autori: Ramona Nimirciag
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25900

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

Tourism is one of the essential components of population services and a major influence factor for economic and social development. The tourism industry is characterized by a great structural complexity, in multiple forms of this service.This industry can also have an impact on the natural resources and environment in the various tourist destinations, on everyday life of these locations and also on the individuals from those areas, whether rural or urban. Nowadays, tourism faces different challe...
Autori: , Elena Elisabeta Pomeanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25903

Abstract An activated sludge from SBBR (sequencing biofilm batch reactor) reactor filled with Fe0  as filler had been acclimated to Fe(III)rich environment aiming at secure an enrichment culture of iron-reducing bacteria. The dissimilatory Fe(III) reduction ability and its efficiency on the effect of nitrogen and phosphorous removal by dosing different Fe(III) under anaerobic condition were investigated. The mechanism was also proposed based on the results derived from the experiment a...
Autori: Jie Li, Juanjuan Feng, Siyuan Zhai, Ya’e Wang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25943

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

AbstractVegetable waste was used as the fuel of a two-chamber microbial fuel cell (MFC) for simultaneous power recovery and wastedegradation. Effects of ultrasonic pretreatment, organic loadings, anolyte pH adjustment on the MFC performance wereinvestigated. Results showed that higher power generation and organic compounds removal efficiency were achieved in theMFCs with the vegetable waste pretreated with ultrasonication at >1.0W/mL compared to the un-pretreated control. A maximumvoltage of ...
Autori: Kun Tao, Xiangchun Quan, Yanping Quan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25953

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

AbstractBased on the field survey, this paper analyzes the relationship between groundwater and ecological environment in arid andsemiarid areas in northwest China. Groundwater in the arid and semiarid areas is a natural resource with economic and ecologicalvalues. The concept of the ecological value of groundwater is firstly presented. This ecological value can be reflected in fouraspects: (1) the maintenance of base flow in rivers and areas of lakes and wetland; (2) the supply of physiological...
Autori: Donghui Cheng, Jinling Kong, Lei Duan, Wenke Wang, Zeyuan Yang, Zhoufeng Wang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25962

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

AbstractPolyvinyl alcohol (PVA) is a typical refractory organic pollutant with low biodegradability and high molecular weight. Thispaper presents data on the radiolysis of PVA in aqueous solutions by using ionizing radiation. Response surface methodologywith Box-Benhken design of experiment was applied to analyze the interactions among initial concentration of PVA, absorbeddose, and initial pH of aqueous solutions on PVA removal efficiency. 9.4-89.4% PVA was removed based on differentcombination...
Autori: Jianlong Wang, Jinping Tian, Lujun Chen, Shijun He, Weihua Sun
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25967

“The Exploratory Workshop „Progress inEnvironmental Engineering, Biotechnology andManagement in The Frame of Knowledge-BasedSustainable Economy” took place in the contextwhen worldwide research shows that the currentindustrial system supports a population that useresources and generates waste, consuming the Earth'ssupply, but who’s biocapacity is far outweighed bythe increased demand of products for a developmentsystem that often works on unsustainable bases.Today’s challenge is the integration ...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25969

AbstractConsumption and related waste production is an integral part of our daily lives. The waste generation worldwide depends on theeconomic strength of the given region/country, and it increases from year to year. More and more attention is drawn to the re-use,recycling, reutilization of the waste which are driven mainly by environmental concerns and economic interests. Regional wastemanagement systems have been established in Hungary with the support of EU funds, which process the waste acco...
Autori: Ákos Rédey, , Attila Sarkady, László Dióssy, Róbert Kurdi, Tatiana Yuzhakova
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25970

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

AbstractNumerous governments have adopted innovative policy instruments to deal with important environmental policy challenges.Various forms of negotiated instruments may offer the potential to improve on environmental performance beyond whatregulation alone can accomplish. Dutch covenants, which represent negotiated agreements with sectors of industry as targets ofbehavioral change in terms of mitigation of pollution, waste minimization and sustainable products and processes, provide auseful sa...
Autori: , Kris Lulofs, Laura Franco, Theo de Bruijn, Yanyan Xue
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25972

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

AbstractIn this paper, the background of bioethanol as an alternative fuel to conventional one is analyzed with the aim of examining theefficiency of biomass-to-fuel conversion by poly-generation taking into account the energy integration approach for a completerecovery of the process’ exergy potential.Based on literature data it is underlined that exergy analysis represents a primary tool to analyze the ethanol production processfrom an integrated point of view....
Autori: Anton Friedl, Maria Gavrilescu, Petronela Cozma
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25974

AbstractIn this paper integrated network of continuous reactors for the decontamination of gaseous flows in heterogeneouscatalytic gas-liquid-solid – also applicable for bioremediation systems is investigated. For this purpose, duringprocess integration we have identified strategies to develop an optimal system for a variety of well-definedrequirements and to discover ways to ensure cost efficiency to achieve the requirements of sustainable industry in theframe of knowledge-based sustainable eco...
Autori: Maria Gavrilescu, Oana Marlena Penciu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25977

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

AbstractThe WINGEMS software is a useful tool in analyzing, mathematical modeling and synthesis of chemical processes. Thissoftware can be applied to simulate various stages of the papermaking process. An example of simulation and modeling ofprocess is presented for paper stock preparation line for papermaking. On the basis of data obtained during process analysis, it ispossible to elaborate a strategy for control and monitoring of technological parameters and, while the efficiency of the proces...
Autori: Corina Măluțan, Theodor Măluţan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25981

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

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

This special issue of EnvironmentalEngineering and Management Journal is dedicated tointerdisciplinary research and discusses multipleresults addressing environmental issues inElectromagnetic Compatibility (EMC) andEngineering in Medicine and Biology (EMB) areas.Some of the most significant researchdirections considered in this issue entail theelectromagnetic pollution together with a survey ofelectromagnetic environment in order to analyze andquantify the biological and health effects ofelectro...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25990

AbstractThe paper outlines a technique to mitigate the power frequency magnetic field produced in its vicinity by the transport anddistribution power lines. The technique consists in introduction below the line conductors of a passive loop of rectangular shape.Due to the induced currents in the rectangular frame, the total magnetic field below this structure is significantly reduced. Themethod’s efficiency depends by the line conductor’s configuration and also by the dimensions of the frame. The...
Autori: Călin Munteanu, Emil Merdan, Ioan T. Pop, Sorin Deleanu, Vasile Topa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25994

AbstractIt is already demonstrated that mental or psychological stress can affect human health, since it is a major risk factors for numerouscurrent diseases such as: high blood pressure, congestive heart failure, coronary diseases, stroke, causing often sudden death.These diseases are particularly dangerous in the case of car drivers, since they have to make accurate and fast decisions evenunder stress condition. Frequently, the stress can be detected by different methods with various degrees o...
Autori: Alexandru Păsărică, Cristian Rotariu, Hariton Costin
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26008

AbstractDue to high energy costs and the rising consciousness of energy issues in the textile industry, saving energy became a significantproblem. Since a large amount of the energy required in textile finishing is needed in the form of steam for various processes,recovering wastewater heat has great potential for cost reduction. In this research, it was studied the heat recovery from cellulosictextiles finishing wastewater, based on a case study in a textile company. After examining the wastewa...
Autori: Armand F. Bertea, Gheorghe Condurache, Răzvan Berariu, Romen Butnaru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26013

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

AbstractWater distribution networks are complex systems that require innovative technological solutions enabling an integrated andrational water resource management. This paper presents the application of data analytics approaches on flow and pressure data,continuously measured at crucial points of the network, for improving efficiency of leak localization. The general goal is toreduce time and costs for physical check and consequent rehabilitation activities.Although the general benefits provid...
Autori: Antonio Candelieri, Enza Messina, Francesco Archetti
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26018

AbstractThe hydrodynamics of two equipments from a surface water treatment pilot plant has been investigated through residence timedistribution (RTD) experiments using brine solution as tracer. Computational Fluid Dynamics (CFD) procedure, which isincreasingly utilized to study a wide variety of complex environmental fluid mechanics processes, was used to predict the flowpatterns and other properties of flowing fluids (e.g. velocity, concentration of species etc.). In this work, ANSYS Fluent 14....
Autori: Adina Pacala, Alain Liné, Alexandru-Dan Filep, Cosmina-Mariana Militaru, Teodor Todinca
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26030

AbstractMaking tourism more sustainable, means not only to control and manage the negative environmental impacts of this sector.Tourism is unique in the sense that it can provide both economic and social benefits for local communities and it can alsostrengthen the awareness and support for environmental conservation. The purpose of this paper is to provide a framework formore sustainable tourism development policies, but also a set of instruments to implement these policies. We used in this stud...
Autori: Carmen Teodosiu, Elena Elisabeta Pomeanu, Eric Boutin, Simona-Andreea Ene Popa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26031

AbstractIn this paper we analyzed some characteristics of vacuum sewer systems from technical, economical, environmental and socialperspectives. The vacuum sewer systems transport wastewater with lower pressure (p<pat), and are compared to conventionalsewer systems with free level (p = bed) - gravity and under pressure systems (p>pat) - gravity or pumping systems. Vacuumsewer systems are recommended for rural communities and residential neighbourhoods surrounding urban areas, developed ons...
Autori: Corina Panfil, Ion Mirel, Izabella Szigyarto, Monica Isacu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26035

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

AbstractWater and its sustainable use is closely connected to developments in other fields, such as industry, agriculture and services,energy, nature conservation and health. The pressures imposed by the higher water demands, quality of discharges and climatechange raise new water challenges which can be overcome only by coordinated efforts of multiple stakeholders throughcooperation and participatory processes.This study presents how public participation – within the context of integrated water...
Autori: Carmen Teodosiu, George Bârjoveanu, Joanne Vinke-de Kruijf
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26039

AbstractWater quality is an inportant concern for the ecosystem state from a particular region. Since the continuous urban and economicdevelopment induces a negative impact on entire hydrological cycle, this study investigates the water quality of a Romanian lake,located in the Surduc area - Timis County. This perimeter has undergone significant economic development in the past twodecades due to increased tourism potential and the number of holiday residences.We proposed hybrid materias for the ...
Autori: Adina-Elena Segneanu, Cornelia Bandas, Florentina Cziple, Ioan Grozescu, Paula Sfîrloagă, Titus Slavici
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26040

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

In 2012, the Faculty of Hydrotechnics,Geodesy and Environmental Engineering of The"Gheorghe Asachi" Technical University of Iasi,Romania celebrated 50 years of education in the fieldof hydraulic engineering at the Polytechnic Instituteof Iasi.In 1948, in the same time with the EducationReform in Romania, in Galati, the Faculty ofHidrology was founded. At the same time, studentswho were attending the Rural EngineeringSpecialization in Bucharest were also transferred tothe new established Faculty....
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26048

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

AbstractIncreasing the labor force employment and participation rates is sustained by capitalization of human opportunities existent inrural areas. This entails a flexible and inclusive labour market and a decreasing rate of exclusion for some rural groups.This paper highlights the need of facilitating the access to the labour market by achievement of professional skills needed in nonagriculturalsectors from rural areas for the vulnerable groups as well as the entrepreneurial groups. The analysi...
Autori: Carmen Olguta Brezuleanu, ,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26059

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

AbstractConstruction and demolition waste (C&DW) are the result of inefficient and unsustainable use of natural resources and energy inproduction processes and other human activities, leading to economic losses. In this paper, the Ecological Footprint (EF), as a newindicator and methodology in environmental sustainability assessment was used to calculate where and how the humans induceimpacts on the environment, in particular due to the generation of C&DW. Ecological footprint makes a re...
Autori: Alessandra Bonoli, Cristina Ghinea, Isabela Maria Simion, Maria Gavrilescu, Nicolae Taranu, Sebastian George Maxineasa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26070

AbstractThe concept of firm reputation is tightly connected to the concept of corporate social responsibility and implicitly to that ofsustainable development. Reputation is the achieved result of the company out of factors such as economic viability, socialinvolvement and ecological health. The strength of a firm`s reputation is the ability to empower with core competences and usethem efficiently for both creating economic value and meeting the legal interests of the stakeholders. The main assu...
Autori: Manoela Popescu, Roxana Arabela Dumitraşcu, Vadim Dumitraşcu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26071

AbstractThis paper describes preliminary tests carried out in treatment plants serving two different pig farms in Northern Italy, in order toassess the feasibility of implementing biological sulphur removal from biogas produced by anaerobic digestion processes. Thisnormally consists of mixture of CH4, CO2, and other gases; in the presence of sulphur, H2S is also formed, which must beremoved prior to the gas use in thermal engines, to avoid corrosion phenomena. Sulphur removal in the plants consi...
Autori: Andrea G. Capodaglio, Arianna Callegari, Vincenzo Torretta
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26074

AbstractOne of the main objectives of S.C. AVI-TOP S.A. Războieni – Iasi management is the implementation and continuousimprovement of a functional environmental management system in accordance with European standards and their integration intothe unit’s management systems. Environmental management strategy at S.C. AVI-TOP S.A. Războieni – Iasi aims to achieve abalance between economic and environmental protection outcomes, directing all activities towards eliminating pollution. Thepap...
Autori: Aurel Chiran, Benedicta Drobotă, Elena Gindu, Monica-Ionela Pandelea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26076

AbstractThe scope of the present paper is water management dimensioning closed to the copper mining area in the Medet region(Bulgaria). The mining works left an open pit and several waste rock dumps within the catchment area of Medetska River. Atpresent although the flooding of open pit is going on, it will be finished approximately in 2018. Water treatment is necessary dueto the high concentrations of pollutants (sulphate and copper) in the waters influenced by mining. The objective of the stud...
Autori: Gabriela Biali, Petra Schneider, Ralf Löser
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26077

AbstractThe present study reports the efficiency of almond shell as a cheap and available material for the removal of Cu (II) fromcontaminated aqueous solutions. The equilibrium experiments indicated that Cu (II) sorption obeyed the Langmuir isotherm at26, 40 and 55oC. The highest value of the maximum uptake (Qo) from the Langmuir equation was found 6.783 mg g-1 at 40oC.The various thermodynamic parameters such as ΔGo, ΔHo and ΔSo were also calculated. The values of ΔGo varie...
Autori: Soheil Aber
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26080

AbstractA study on the electrochemical decolourisation, aromatic ring degradation and mineralization of Reactive Red 147 (RR) syntheticsolutions using boron-doped diamond (BDD) electrodes is presented. Electrolyses were carried out under galvanostaticconditions in 0.1 M Na2SO4 supporting electrolyte using undivided electrolytic cell. Prior to electrolysis application, theelectrochemical behaviour of BDD electrode was characterized in the presence of RR dye by cyclic voltammetry in order toestabl...
Autori: Sorina Moţoc
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26089

AbstractCombined electrocoagulation (EC) and homogeneous phase TiO2 photo-assisted system were applied to methyl orange (MO)wastewater treatment. Optimum including current density, initial concentration of MO, TiO2 concentration, pH, solutionconductivity and electrode distance were investigated. 98% decolorization (initial concentration = 500 mg/L) was achieved in 30min with a current density of 125 A/m2, electrode distance of 2.5 cm, electrolyte KCl concentration of 0.5 g/L, initial pH of 6.86,...
Autori: Yi Zhang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26090

AbstractWaste electrical and electronic equipment (WEEE, e-waste) represent the category of municipal waste with the fastest growthrate of the quantities generated particularly in developed countries. In Romania the WEEE management concerns have emergedrecently and the amount of information and data available is limited and sometimes irrelevant. In this case, studying the forcesthat influence WEEE management system directly or indirectly is useful for both the national and international stakehol...
Autori: Nadia Ciocoiu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26092

AbstractThere are a quite large number of studies published in the last decade, dealing with the possible pass of the human society to thehydrogen-based energy. The efforts made by researchers all around the world, in order to bring technical solutions, seemremarkable, but at global level only minor progresses were made toward this major change. Furthermore, most of studiespredicted a fuel crisis, but not a possible economical crisis with significant effects on the developing renewable energytec...
Autori: Ştefan Stanciugelu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26099

Mother Earth Investments AG, is actively working onthe development 2nd generation bioenergy feedstocks.In this book, Mr. Jansen generously shares hisknowledge in the field, in particular, regarding thechallenges and opportunities in development ofbiomass-derived fuels. This essential guide toinvesting in bioenergy commodities details secondgeneration biofuels from a scientific, technical andeconomic perspective, and discusses their globalenvironmental, political and financial impact.The book is ...
Autori: Roland A. Jansen
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26100

The 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 The main purpose of this paper is to identify, highlight and analyze the recycling possibilities for the activated glass derived from the treatment of the cathode ray tubes (CRT) waste equipment and to demonstrate the recycling viability, economical and environment protection efficiency. A total of 95 pieces of waste electronic equipments (TVs and PC monitors) were processed and a number of five TVs and five PC monitors from the ‘95s were analyzed. Significant quantitie...
Autori: Antoanela Popovici
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26124

Abstract An original Discrete Perfect Sets (DPS) algorithm was developed and applied to clustering of earthquake epicenters with M≥3.0 in California. The obtained clusters correspond well with the locations of the epicenters of strong earthquakes with M≥6.5. This fact allows considering them as earthquake-prone areas for the magnitude M≥6.5. We compared the obtained clusters with the areas recognized in 1976 using Earthquake-Prone Areas (EPA) method. The compariso...
Autori: Alexei Gvishiani
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26132

Abstract In order to accomplish the water quality standards required for a specific use, the continental surface water is treated through a sequence of operations and unit processes. The treatment technological flowsheets carry out, partially or totally, the removal of various pollutants, every treatment step being used for improving one or more qualitative parameter. The treatment scheme is specific to water source type and water use. One of the basic operations for water treatmen...
Autori: Oana Tirtoacă Irimia
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26136

Abstract Agriculture is an axis of socio-economic development of the area of Denguele, Cote d’Ivoire. The evaluation of a project carried out as part of an agricultural campaign requires the handling of large amounts of heterogeneous data for effective monitoring. The design of an appropriate management tool is needed to organize and communicate information useful for decision making. The aim of this work is to provide a useful tool for a better management of information related to...
Autori: Arthur Brice Konan-Waidhet
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26137

Abstract The paper presents several aspects regarding the optimization of the operation for a mixed cycle gas turbine, Titan 130S type, installed at S.C. CET S.A. Bacau, during the warm season. The optimization entails the partial loads operation and has been done using the multicriterial analysis, taking into consideration the operation restrictions required for this type of gas turbine. The criteria that regard this analysis are: thermal energy requirements, the global efficiency...
Autori: Marius-Ion Stanila
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26145

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 The reason for carrying out this research is related to the significant risk of heavy metals present in wastewater on the environment and human health. The removal of heavy metal ions from aqueous solutions was performed in a batch system, using peat (from Poiana Stampei, Romania) as adsorbent. The efficiency of the process was predicted with high accuracy (correlation with experimental data more than 0.99) based on a feed-forward neural network with two hidden layers. The...
Autori: Gabriel Dan Suditu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26150

AbstractThis paper analyzes spatial effect of urbanization level, land use efficiency and their coordinative development degree of Xinjiangfrom 1995 to 2010 based on Exploratory Spatial Data Analysis and coordinative development degree model. It was found that the urbanization level and land use efficiency take on apparent spatial agglomeration. The hot spots concentrate mainly in the north slope of Tianshan Mountain and the corridor along South Xinjiang railway, and the cold spots distribute ma...
Autori: Yuanjing Qi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26167

AbstractMethane production and concentration from six cells were investigated in two landfills in China. Long-term monitoring tests wereconducted to evaluate the methane recovery efficiency of active wells. Results showed that the recovery efficiency of a wellsdistribution simulation method was 75.6% to 83.5%, which was much higher than 50.1% to 53.6% when considering the EPAmethod in the EST (Ecological Sludge Evapotranspiration Technology) cover structure. The recovery efficiency of methane in...
Autori: Qiang Xue
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26174

AbstractA wet flue gas desulfurization (WFGD) system adopting electrostatically-assited twin-fluid atomization injector was presented.Spatial distributions of the droplet sizes, velocity for different voltages were measured using limewater and SO2 removalefficiency for different voltages and Ca/S ratios were tested using limewater drops. The physical and chemical improvementmechanisms were analyzed using spray characteristics and double film theory. The analysis showed that electrostatically-ass...
Autori: Zhentao Wang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26175

AbstractAlong with the rapid economic development of China, the large amount of carbon dioxide (CO2) emission has become constrainton future sustainable development. The Chinese government has established a series of policies to come with the high CO2-emission resulting from economic development with the target to reduce its carbon intensity (CO2-emissions per unit of grossdomestic product (GDP)) by 40-45%, and to decrease the energy intensity (energy consumption per unit of GDP) by 20% by theye...
Autori: Feng Xu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26181

AbstractAdopting the theories and methods of emergy analysis, the annual average emergy input-output of the Lake Nansi wetlandecosystem is calculated. Further, the emergy analysis chart is drawn to evaluate the energy flow and the economic value of thelake. The structure and functions of the Lake Nansi wetland ecosystem are analyzed as a whole. The results showed that theamount of the input solar emergy (including sunlight, wind and rainfall) of the Lake Nansi is 1.11×1021 1021 solar emergyjoule...
Autori: Liang Chunling
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26183

AbstractThis study estimates the number of visitors to State Protected Wilderness Areas (SPWAs) in Chile by origin (national andforeign), using annual data from 1986 to 2011. Two linear regression models were used: one to estimate the number of Chileanvisitors and the other for foreign visitors. The model to predict Chilean visitors in 2013-2014 incorporates the GDP per capita inChile, the annual trend in the conditions of international economic crises, while the model to predict the number of f...
Autori: Jaime Pérez-Kallens
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26189

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

AbstractEnvironmental proactivity is a key research topic as it arises as a value-adding creator and therefore constitutes a competitiveadvantage for companies. In this paper, we classify industrial companies according to their environmental proactivity and thenwe determine whether their economic performance differs in relation to the firms’ environmental position. We analyzed 132Spanish industrial firms located in the Valencian region and apply quantitative methods to conduct the analysis. The ...
Autori: María-del-Val Segarra-Ońa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26194

AbstractThough at a first sight the potential of tourism was advocated, without any doubt, as an routine tool for improving the welfare ofthe population, in recent years several works have appeared that criticize the universal validity of tourism as a development tool,whose premise is that the relationship is not automatic between the two dimensions, but instead a country must meet certaincharacteristics in order for this link to occur and, therefore, calls into question the solution implemented...
Autori: Juan Ignacio Pulido-Fernández
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26197

AbstractGlobal energy demand is following a strong upward trend. As highlighted by the latest analyses the overall black coal resourcesare able to satisfy human needs for more than 200 years including the particular case of intensive exploitation. According to theInternational Energy Agency (IEA) renewable energy and natural gas resources have encouraging perspectives for furtherexpansion. Even so coal will continue to cover almost a quarter of primary energy resources needs. The EU is currently...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26199

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

AbstractSupply of heat energy is of the high importance in the northern countries of the Europe. EU energy policy and high prices of theheat energy resources takes a challenge to find any alternative resources for generation of heat energy. Therefore in this paper the integration of renewable energy source - solar energy into the existent heat energy supply system is analyzed as the alternative or additional source of heat energy. The case study of the Girionys boiler-house (at Kaunas district, ...
Autori: Jolanta Dvarionienė
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26201

AbstractGallinaceous feathers are an abundant solid waste from the poultry processing industries, which poses disposal problems. Akinetic study dealing with the adsorption process of wool reactive dye, Yellow Lanasol 4G (CI Reactive Yellow 39), ongallinaceous (Gallus gallus, Cobb 500) feathers was carried out. The main research goals of this work were to evaluate theviability of using this waste as adsorbent and to study the kinetics of the adsorption process, using a synthetic effluent. Thechar...
Autori: Sónia Adriana Figueiredo
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26203

AbstractCurrently one can witness a revolutionary change in teaching/learning strategies and an evolution which should reconsider therelation between educational institutions, teaching staff, and students, on the one hand, and economic agents, public or privatecompanies, firms, and NGOs, on the other. Despite the large amount of research focusing on the entrepreneurial phenomenon,there has been limited focus on the effect of education upon enterprise performance in terms of venture creation and ...
Autori: Gabriela Boldureanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26204

AbstractSimultaneous uptake of Cd(II) and Pb(II) by corn in two artificially contaminated soils (sandy and sandy loam) amended withtwo doses of natural (NM) and modified (MM) montmorillonite were investigated in a pot experiment under greenhouseconditions. Results showed that the addition of NM and MM to sandy loam soils didn’t have significant effect on the uptake ofCd(II) by roots, then is translocated to the aerial tissues. On the contrary, uptake of Cd(II) by shoots was increased in potscont...
Autori: Hadis Hosseini
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26205

AbstractPotential of unmodified Wheat Straw as an adsorbent for the removal of lead and copper was studied. Effect of pH, adsorbentdose, contact time and initial metal concentration on the removal of the metal ions were also investigated. Maximum removal oflead was found to be 43.55% by wheat straw under optimum conditions (pH=5, adsorbent dose=16g/L, contact time= 240minutes, metal concentration=100 mg/L). Unmodified Wheat straw removed 0.381 mg/g of lead. While 56.36% copper removalwas achieve...
Autori: Mehwish Anis
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26209

AbstractThe reuse of a wastewater treatment system was investigated using intermittent media infiltration (IMI) to evaluate the fecalcoliform (FC) removal efficiency with natural zeolite containing clinoptilolite from the state of San Luis Potosí, Mexico and itszinc-modified form (Zeo-Zn). The municipal wastewater, which was from Saltillo, Coahuila, Mexico, was treated for FC analysisfor four months. The physicochemical properties of zeolite were analyzed, and their behavior as filter media for ...
Autori: Sasirot Khamkure
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26212

AbstractAdsorption of a cationic dye, methylene blue, from aqueous solutions by using sawdust (without any modification) by batchadsorbers was investigated. The surface characterization of the saw dust was carried out by Fourier transform infrared (FTIR) andscanning electron microscopy (SEM) and pHzpc of the surface was also determined. Effects of different parameters such ascontact time and initial concentration, temperature and pH on the process of removal were studied. The process of removal ...
Autori: Sushmita Banerjee
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26216

AbstractGlobal warming is happening due to increasing level of carbon dioxide and other greenhouse gases into the atmosphere. In orderto reduce this rising level of CO2 emitted by human activities, carbon capture and storage technologies are being developed.The present paper investigates and compares, from a techno-economical point of view, two of the most used conceptual methods(post- and pre- combustion) for CO2 capture generated from the fossil fuel power generation sector. For post-combustio...
Autori: Anamaria Padurean
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26217

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

AbstractWhite Storks (Ciconia ciconia L.) may cause severe outages in electric networks leading to poor power quality service.Furthermore, bird fatalities often occur as consequence of electrocution. Therefore, equipment damages, economical losses ofindustry and electric corporations and bird deaths persuaded the main electric distribution operator and the regulator toimplement management programs of storks’ activities in the vicinity of electric distribution substructure to minimize storkfatali...
Autori: Pedro M.M. Araújo
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26229

AbstractCd (II) removal efficiency of free and immobilized fungal consortia of 48-h-old Mucor sp. HI33 + 72-h-old Gliocladium virideAI003 + 72-h-old Aspergillus niger AH09 from aqueous solutions were tested under different aeration systems. Cd (II) removalby free cells under air bubble system aeration was higher (99.91%) than under shaker system aeration. Cd (II) removal byimmobilized fungal consortia was higher (83.18 %) under shaker system aeration and lower in air bubble system aerationrespec...
Autori: Arifa Tahir
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26232

AbstractIn this research, response surface methodology (RSM) was applied to model the effect of main operational variables includinginitial pH, initial phosphate concentration, current density and reaction time on phosphate removal by electrocoagulation. It wasfound that the decrease of initial pH and initial phosphate concentration, and the increase of current density and reaction time are beneficial for improving phosphate removal efficiency. According to the ANOVA (analysis of variance) resul...
Autori: Mohsen Behbahani
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26237

AbstractNon-pesticide persistent organic pollutants (POPs) under the Stockholm Convention include polychlorinated biphenyls (PCBs),polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDDs/PCDFs), polybrominated diphenyl ethers(PBDEs), polybromobiphenyls (PBBs) and perfluorooctane sulfonate (PFOS), which are industrial chemicals and/orunintentional byproducts that remain in the environment, bioaccumulate in human and animal tissue through the food chain, andhave adverse effects ...
Autori: Wen-Tien Tsai
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26239

AbstractWashing black aluminum (Al) slag to obtain soluble salts is an important stage of the smelting slag treatment at technologicalprocess. This process is used to recover Al as a coagulant for water purification. This research aims at establishing the optimalconditions for washing (e.g. temperature (T), solid: liquid ratio (S : L), time, the recirculation waters in the system). The goal ofresearch was to determine: a) the removal with maximum efficiency of the soluble salts from black Al sla...
Autori: Romanita Teodorescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26243

AbstractThis paper continues the previous investigations regarding the technology for the Aluminum (Al) recovery as Al sulfate fromblack Al slag. Leaching is the next compulsory step in the Al extraction process. The paper studies the influence of mothersolutions´ (MS) recirculation resulted from the process within the system over the quality of Al sulfate and the siliceous residue(R) and, the aluminum nitride (AlN) hydrolyses in the leaching process. The optimum parameters determined are: *the ...
Autori: Romanita Teodorescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26250

AbstractThe present study is aimed at a long-term treatment performance of a constructed wetland with horizontal subsurface flow atJimlíkov, Czech Republic. The system was put in operation in 1993 and the treatment performance is evaluated for the period1998-2009 due to non-existence of results from the beginning of operation. The parameters of concern were BOD5 (biochemicaloxygen demand), COD (chemical oxygen demand), TSS (total suspended solids), NH4-N (ammonia-N) and TP (totalphosphorus). A t...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26258

AbstractEnergy efficiency in buildings is a key issue in achieving sustainable development. Many decision support methodologies andtools have been developed, mainly based on energy consumption measurements or simulations and rules designed by experts toconstruct Building Energy Management Systems. An extension of this information from raw consumptions to energy efficiency isrequired. In addition, a visual depiction of this information with temporal and spatial resolution, applied to the differen...
Autori: Mark Richard Wilby
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26259

AbstractThis study is focused on simulating and optimizing design and configuration of anaerobic baffled reactor (ABR) by means ofartificial neural network (ANN). This approach is aimed to assess an efficient ABR performance in various operational conditionstreating municipal wastewater. For this purpose, to analyze comprehensively on a base of experimental data, the system isoperated in two pilots of 48 liters net volume made of 8 compartments. In 7 months, more than 130 sets of data are obtain...
Autori: Gagik Badalians Gholikandi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26260

AbstractThe aim of this study is to elaborate a survey on the efficiency of three anti-aging cosmetic formulations by applying FourierTransform Infrared Spectroscopy (FTIR) with Attenuated Total Reflection (ATR) in order to characterize and identify thespecific recognition markers of the active ingredients. FTIR (ATR) spectrometry in specific regions was applied also to theingredients used in these products, depending on their role in the specific cream. Comparing the different composition of th...
Autori: Anca Maria Juncan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26261

AbstractThe construction industry is one of the main sectors of energy consumption and carbon emissions in China. The new-types ofbuilding materials can be produced by recycling industrial solid wastes which is an effective solution to development of greenbuilding materials and abatement of environmental emissions. In this paper, new-types of bricks made of fly ash (residuesgenerated in coal combustion) and coal gangue (a kind of solid wastes generated in coal mining and coal production) and the...
Autori: Haitao Zhang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26265

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

AbstractA novel RHA/PFA/CFA sorbent was developed by sol-gel method using three types of ashes, i.e. rice husk ash (RHA), palm oilfuel ash (PFA) and coal fly ash. From surface analysis of selected RHA/PFA/CFA sorbents, the spent sorbent had more compactstructures covered by irregular rough surface and the specific structure of raw RHA, PFA, and CFA were no longer visible. Inaddition, lower specific surface area was obtained for spent RHA/PFA/CFA sorbent. Batch studies were performed to evaluatet...
Autori: Irvan Dahlan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26272

AbstractThe extent of the problem of the excessive fluoride in drinking water remains an important health issue. In the present work,strong-base anion resins were investigated to assess their sorptive removal capacity of fluoride from water. It was found that theremoval of fluoride was high at natural pH (7) and was improved for increasing contact time and adsorbent dosage. Themaximum sorption of the resin was 13.7 mg/g according to the Langmuir model, namely higher than the values reported in t...
Autori: Mohammad Taghi Samadi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26273

AbstractThis paper presents the full-scale treatment of nylon production wastewater in a wastewater treatment plant in Henan province, Central China. In this case, a 9600 m3/d capacity wastewater treatment plant was installed to treat the wastewater generated from the production of nylon-66 salt, based on the biological anaerobic filter (BAnF) combined with an anoxic/oxic (A/O) process. The performance of the biological combined system was monitored over a 75-day period. The results revealed tha...
Autori: Chunlian Xu, Haiming Huang, Jiankun Dai, Jianrong Qi, Qianwu Song, Shaowei Wu, Wenjun Wang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26276

AbstractThe aim of the present study was to investigate the mechanism of Cr(VI) bioaccumulation by livingand active Phanerochaete chrysosporium. Fungal growth was inhibited beyond 10 mg L-1 Cr(VI) concentration thereby reducing the chromium bioaccumulation capacity. The optimum pH was found to be 6 for the growth and bioaccumulation of Cr(VI) by P. chrysosporium. Bioaccumulation efficiency decreased from 81.47% to 23.82% when Cr(VI) concentration was increased from 10 to 40 mg L-1. A Fourier tra...
Autori: Kaustubha Mohanty, Somasundaram Murugavelh
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26280

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 this study, the experimental performance of a single slope solar still coupled with an evacuated tube collector was investigated. A single slope passive solar still (PSS) and single slope active solar still (ASS) integrated with an evacuated tube collector were fabricated with an area of 1 m2 and tested in the composite climate of Coimbatore, Tamilnadu, India, (Latitude: 11°N; Longitude: 77°E and an altitude of 409 m above sea level). High water  temperatures in the range of 84.2...
Autori: Karuppusamy Sampathkumar, Palanisamy Senthilkumar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26286

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

AbstractThis paper presents the results of the removal of arsenite and arsenate ions from an aqueous solution using Fenton modified solid waste vegetable oil industry (SWVOI). Several factors (such as pH, contact time and Fe2+/H2O2 ratio, initial arsenic ion concentration and adsorbent concentration) that affect the arsenic ion adsorption on the SWVOI adsorbent material were investigated. The sorption characteristics of the adsorbent material before modification were also studied and compared wi...
Autori: Hoda Amiri, Mehdi Ahmadi, Nemat Jaafarzadeh, Susana Silva Martínez
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26290

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 efficiency of solar disinfection (SODIS) was evaluated and enhanced by concentrating sunlight at low pH values in a solar collector disinfection (SOCODIS) system at different sunlight intensities and is highlighted in the author’s earlier findings. In order for further improving the rainwater disinfection, simple technique like wrapping the PET bottles with heat-resistant plastic bags (Wp) were used for enhancing the thermal/synergistic effects of solar radiations. An analysis of the...
Autori: Abdulrahman Ali Alazba, Mooyoung Han, Muhammad Nasir Amin, Muhammad Tahir Amin
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26298

AbstractAerobic granulation is a novel biotechnique for the treatment of coloured wastewater containing toxic xenobiotics in sequencingbatch reactor (SBR). The aerobic granules were investigated as a potential biomaterial for biodegradation of p-nitrophenol. Theremoval efficiency of p-nitrophenol was 93 % after 65 days of operation at 8 hr hydraulic retention time (HRT). The aerobicgranules were cultivated at a p-nitrophenol loading rate of 0.9 kg m-3 day-1, with sodium acetate as co-substrate t...
Autori: Pijush Kanti Mondal, Rais Ahmad
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26302

AbstractA new cell design which makes an efficient use of the cathodically evolved H2 to improve the mixing efficiency and thefloatation ability during electrocoagulation was used to remove dyes from waste solution. In this study, the decolorization andCOD reduction of colored solutions containing reactive and basic dyes by electrocoagulation was investigated using aluminumelectrodes in a batch mode. The effect of operating parameters such as current density, initial dye concentration, NaClconce...
Autori: El Sayed Zakaria El Ashtoukhy
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26303

AbstractThis investigation compared the performance of Fenton and photo-Fenton oxidation processes in the treatment of sulfidic spentcaustic wastewater. Response surface methodology, particularly central composite design was used to investigate the effect ofFe/H2O2 and H2O2/COD in assessing treatment process efficiency. Empirical models were developed to describe the relationshipbetween the factors and responses. The models were validated through analysis of variance and were further used in pro...
Autori: Azmi Aris, Mohd Ariffin Abu Hassan, Sharifah Hanis Yasmin Sayid Abdullah, Siti Fadilah Md Noor, Zainura Zainon Noor
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26307

AbstractThe paper compares the electrocoagulation performance during the removal of Acid Brown 14, Acid Yellow 17, Acid Blue 113and Acid Black 172 dyes from aqueous solutions. For this purpose, pH changes and effectiveness of main parameters includinginitial dye concentrations and current densities for the selected dyes were examined. In addition, effluent turbidity, energyconsumption and amounts of released aluminum were also investigated. The present work shows that Acid Yellow 17 removaleffic...
Autori: Mahsa Taheri, , Mokhtar Arami
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26310

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 ever-growing demand for environmental assets is a phenomenon of our times. Calculating the value of these assets couldplay an important role in providing information about them and also contribute to their conservation and improvement. However,the intangible and subjective aspects involved in this kind of valuation make it difficult, if not impossible, to value them by thetraditional methods. This paper proposes the use of the Analytic Multicriteria Valuation Method (AMUVAM), which i...
Autori: Jerónimo Aznar, María Vallés-Planells, Vicente Estruch-Guitart
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26313

AbstractResearch concerning the efficient use of energy (EUE) and use of renewable energy sources (RES) is growing in the scientificliterature. However, there is a general lack of research concerning management perceptions of companies’ EUE, especiallycompared to research on households. This study examines management perceptions of companies as energy consumers inSlovenia. Data were collected using a combination of quantitative and qualitative methodology. The major finding is thatawareness of t...
Autori: Aleksandra Pisnik Korda, Borut Milfelner, Damijan Mumel
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26318

AbstractThe aim of this paper was to study the performance of a single-stage rotating biological contactor with supplemental aeration interms of removal efficiency of organic and nitrogen content. Research was based on fifteen samples collected during the fouryear period. The wastewater was low strength with maximal measured concentration of 362 mg COD/l, 100 mg NH4/l, and 324mg TSS/L. The maximal measured removal efficiency of COD (chemical oxygen demand) and TSS (total suspend solids) were71% ...
Autori: Dragan Cvetkovic, Dusan Gordic, Milorad Bojić, Srdjan Stosic, Vanja Susterstic
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26322

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

AbstractA septic tank is an essential part of the decentralized wastewater management system. The aim of the experiment described inthis paper was to evaluate the impact of the method of sampling and hydraulic retention time (HRT) on the performance of acircular three chamber septic tank and to design a septic tank for a single household with four residents and wastewater flowrateof 0.6 m3/d. It was found out that the difference between suspended solids (SS) and chemical oxygen demand (COD) remo...
Autori: Ala Kirjanova, Mindaugas Rimeika, Regimantas Dauknys
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26329

AbstractThe optimal development and survival of certain animal and plant species has sometimes been used as a sustainability indicatorregarding environmental health or quality in a given territory. In this sense, the number of endemic species is an importantindicator of proper environmental conservation. In this paper we study the relationship between the number of endemic plantsand certain environmental variables related to human and economic development in various European countries. A statist...
Autori: Esteban Navarrete-Álvarez, José-Manuel Quesada-Rubio, María-Dolores Huete-Morales, ,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26330

AbstractThe removal of phosphorus by strongly basic anion exchanger was investigated. Removal efficiency increased with contact time,resin mass and initial solute concentration, while temperature showed a reverse effect. Equilibrium data were best fitted ontoLangmuir isotherm model (R2>0.99). Maximum sorption capacity of the resin was 66.22 mg/g, namely significantly higher thevalues reported in the literature. The Freundlich parameter (n = 4.3) and the Langmuir separation factor (RL = 0.067-...
Autori: Abdeltif Amrane, Hamid Reza Ghaffari, Mansur Zarrabi, Mohammad Mahdi Soori, Mohammad Noori Sepehr, Saied Borji
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26343

AbstractThe importance of energy sustainability has been constantly growing in scientific, political and economic circles. The reason forthis lies in numerous energy and environmental issues that the entire world is facing on an everyday basis. There are severaltheories about the basic elements of energy sustainability. Nevertheless, the dominant current in scientific circles sees energysustainability as a concept relying on two basic elements: energy efficiency and renewable energy sources. Thi...
Autori: Aleksandar M. Vuckovic, Dejan C. Petrovic, Marko M. Mihic
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26349

AbstractThe discharge of industrial effluents is a growing concern for companies, policy makers and the sanitary water system due to thepossible damage to environment. In Spain, wastewater discharge made into the sewer network is regulated locally by the SanitaryTax (ST). Consequently, for the latter, regulation and cost differences exist. In this paper, the role of Spanish STs to promoteenvironmental protection through the treatment of industrial wastewater (IWW) is analyzed. The study is focus...
Autori: Irene Carra, Isabel María Román Sánchez, José Antonio Sánchez Pérez
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26350

AbstractIn the context of the complexity of the environmental system, this paper addresses the problem of environmental modeling,considering the global aspects of sustainability as well as the linkage between environmental and economic issues. The survey onintegrated modeling highlights that the complexity of the environmental problems should be approached on the basis of multidisciplinarycooperation and studies. Furthermore, the European environmental standards and products quality standards im...
Autori: Ion Viorel Matei, Laura Ungureanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26356

AbstractA cloud point extraction (CPE) procedure for the simultaneous preconcentration of trace amounts of Cd(II), Pb(II), Cu(II), Co(II)and Ni(II) ions as a prior step to their determination by flame atomic absorption spectrometry (FAAS) has been developed. Thisdeveloped method is based on the formation of hydrophobic complexes of these metals with the chelating agent 1-(2-thiazolylazo)-2-naphthol (TAN), which then are entrapped “in situ” into micellar media of non ionic surfactantoctylphenoxyp...
Autori: Wanli Huang, Zhixia Zheng
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26357

AbstractUsing the provincial panel data of China during 1995-2009, this paper focused on the effects of carbon taxes on economy andcarbon emissions in China based on different scenarios. Our research makes the following conclusions: Carbon taxes will restraineconomy growth and curb carbon emissions, but the effects will continually decrease with the enhancement of carbon taxes.Increasing carbon taxes will increase output elasticities of capital and labour, but decrease output elasticity of energ...
Autori: Ru-yin Long, Shi-Chun Xu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26360

AbstractAs a typical environment-economy linking system, recycling and its efficiency measurement with a triple-bottom-line (TBL)thinking, increasingly play an important role in the development of real economies and environmental protection. Since theclassic black-box-based data envelopment analysis DEA model may over-estimate the operation performance of a decisionmaking unit (DMU), this paper describes a novel network based on DEA model to narrow the gap between the DEA theory andpractical nee...
Autori: Huaqing Wu, Qiong Xia, Weidong Zhu, Yixian Liu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26362

AbstractTo deal with the undesirable factors in Data Envelopment Analysis (DEA), a non-linear DEA model was previously developedfor a paper production system, where the desirable outputs are increased and the undesirable outputs are decreased for efficiencyimprovement. To convert the proposed non-linear model into a linear one, a linear approximation to the non-linear constraint isused and an approximate efficiency score is obtained. In this paper, we propose a new method to solve the non-linear...
Autori: Jie Wu, Zhixiang Zhou
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26363

AbstractUndesirable outputs are increasingly considered in data envelopment analysis (DEA) for environmental performance assessmentbecause of hot environment issues. However, many practical conditions are not considered during modeling undesirable outputtogether with desirable outputs and inputs. In this paper, we presented several new approaches with considering weightconstraints between undesirable outputs and inputs. Then we constructed cross-efficiency models for measuring eco-efficiency.Fin...
Autori: Jing Yang, Xianguo Li, Zhixiang Zhou
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26366

AbstractThe optimizing transformation of our country’s energy structure relies on the improvement of production efficiencies of domesticEnergy Companies. The efficiency improvement, in turn, is theoretically based on a set of scientific evaluation approaches. DataEnvelopment Analysis, a nonparametric method to evaluate the relative effectiveness of decision-making units, has a strongdiscriminating power to exclude invalid factors. However, DEA is sensitive to the number of evaluated decision-mak...
Autori: Lei Li, Mingyue Li
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26367

AbstractBased on the improved C-D production function model, the relationship of China’s energy consumption, economic growth andcarbon emissions are comprehensively studied in this paper through the panel data in China from1991 to 2009. The researchshows that energy consumption and economic growth have a long-term equilibrium and a one-way causality relationship fromenergy consumption to economic growth. In both elasticity coefficients and contributive rate, energy consumption plays the mostimpo...
Autori: Huifeng Pan, Jian-Min Wang, Li Yang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26370

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

AbstractTo assess the shares of each indicator of environmental and economic benefits in iron and steel enterprises, the entropy weightfuzzy comprehensive evaluation model is built in this paper based on the consideration of entropy theory and fuzzy mathematicaltheory. The weights of each indicator are determined by entropy optimal theory, and the correlative indicators are processed byfuzzy synthesis evaluation, so as to provide some references for environmental and economic benefits evaluation...
Autori: Bin Wang, Hua Li
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26375

AbstractThe energy and environmental regulations of thermal power plants became crucial issues in China due to the coal dependence ofelectricity generation. The regulation costs, which are distributed differently between the plants are evaluated based ondirectional distance functions approach using the input and pollution data of the main thermal power plants in 2008. The resultsof our analysis show that potential cost for complying with the regulations entailing coal consumption for power gener...
Autori: Jinyi Li, Wei Zhang, Xiaohua Xia
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26376

AbstractAs environmental problems are of concern in modern times, decision makers, dealing with resource allocation, should considerenvironmental aspects. This paper examines a resource allocation problem confronted by a central decision making unit. Thecentral unit is assumed to be interested in maximizing the total amount of desirable outputs. The optimal scale of production isobtained by allocating available resources to decision making units (DMUs) efficiently under the current production po...
Autori: Gongbing Bi, Tao Zhu, Yan Luo
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26377

AbstractIn this paper, the panel data model is built to research the dynamic evolution mechanism of the total factor energy efficiency(TFEE). Then by using the panel data of China from 1991 to 2009, this paper estimates China’s TFEE based on the input to theguide DEA model, and empirically researches on the dynamic evolution mechanism of the China’s TFEE by comparativelyanalyzing the contribution rate of every influencing factor to the growth rate of TFEE. The empirical research results show tha...
Autori: Chuan-Xu Wang, Jian-Min Wang, Li Yang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26380

AbstractWoodland covers about one third of Italy. No longer just a source of products for fuels and buildings, forests also have aprotective function against natural disasters like landslides and they also serve as recreational areas for people.Our primary goal was to define an overall method for assessing the possible uses of woodland areas to help those preparing forestplanning instruments for evaluating the productive, protective and recreational functions of the woodlands. We quantified, usi...
Autori: Alessandro Toccolini, Giulio Senes, Natalia Fumagalli, Paolo Ferrario
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26382

AbstractFor efficient, economical and environmentally disposing the waste rock underground, based on principles of waste directbackfilling in fully mechanized coal mining, this paper carries out a field test in 6304-1 working face of Jining No.3 Coal Mine.We first design a waste rock direct underground processing system, including screening-crushing system, transportation system,transfer system, stope backfilling system and coal mining system. Then optimize the waste backfilling and coal miningt...
Autori: Jixiong Zhang, Qiang Zhang, Xu Zhao, Yanli Huang, Zhan Liu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26383

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

AbstractThe simulation of different situations that may occur in the operation of the mine ventilation network is performed on its virtualmodel, developed and optimized using dedicated software. Depending on the chosen scenario, on the network model are applieda number of changes (addition of new ventilation workings, addition / removal of branches and nodes, changes in aerodynamicparameters: pressure, air flow driven by the fan etc.), the ultimate goals being: to assess how the new model obtain...
Autori: Marius Cornel Șuvar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26408

AbstractResearches aim to develop new knowledge in the metal cutting field, using a relatively new technique with a low number ofapplications nationwide, namely the flexible explosive charge with cumulative effect for fast and precise cutting of metals. Theprocedure of cutting with explosives is a process that involves using and handling materials in their solid phase.This procedure isespecially applied in cases where materials are mostly metals and it uses a directed and controlled cumulative e...
Autori: Ilie Ciprian Jitea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26410

AbstractAs the threat posed by global climate change becomes more acute, action must be taken to mitigate carbon emission. Carbonfootprint, as a widely used term and concept, is increasingly being recognized as a valuable indicator in the field of GHG andcarbon emissions management. However, few attempts have been made to investigate precise relationship between carbonfootprint and influential factors. In this paper, STIRPAT model was employed to reveal the dynamic relationships betweencarbon fo...
Autori: Xiangmei Li
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26414

AbstractThis paper describes the application of a specific model and software designated as EVASAN to identify, assess and prevent theoccupational health and safety risks in the Romanian health care sector, developed in the POSDRU/81/3.2/S/48872 projectCOMPEFSAN by the "Alexandru Darabont" National Research and Development Institute on Occupational Safety Bucharest,in partnership with the "Carol Davila" University of Medicine and Pharmacy Bucharest, the Romanian Institute on Economical -Social R...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26419

AbstractThe rapid technical and economic development in the last few years has brought significant advantages to the human society, butit has also generated very serious threats, such as: pollution, technological accidents, and some other forms of environmentaldegradation. Human actions, either intentional or accidental, imposed by the economic and social development, have had, insome cases, a major impact on the environment, turning into potential hazards and causing environmental damage.This p...
Autori: Daniel-Cătălin Felegeanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26426

AbstractMunicipal wastewater, characterized by temperatures of 14-22°C in the inflow of Wastewater Treatment Plants and above 35-40°C in domestic outflows, represents a relevant thermal energy source. A feasibility study of the implementation of heatrecovery from a specific sewer system should take into account several aspects: potential heat capacity (depending on wastewatertemperature and flow rate in the considered area and climate conditions, and on the sewer characteristics), users that cou...
Autori: Silvia Fiore
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26427

AbstractThe study aimed the diversification of fodder yeast assortments with viable economic effects while reducing the environmentpollution by capitalization of wastewaters with high monosaccharides content from pulp and paper industry and residual wheyfrom milk industry. Using the Response Surface Methodology the fabrication recipe has been optimized according to anexperimental program based on a mathematical model with biomass, protein and residual sugar as response functions. Theculture medi...
Autori: Livia Manea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26429

AbstractThe aim of the current study is to analyse the effects of reusing the abrasive material, in different rates, on the quality of surfacesprocessed by abrasive water jet cutting (AWJ) and to correlate it with the environmental impact. In view of this, two aluminiumalloys are processed, Al 2024 T3 and Al 6065 T651, respectively, with large applicability in the aeronautic and machine buildingindustries. It was found that for reusing rates of the abrasive material higher than 60%, a better qua...
Autori: Carol Schnakovszky
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26438

AbstractThe sludge treatment processes represent a priority when we refer to the municipal wastewater treatment, but can implicate verycomplex studies and applications if we consider the industrial wastewater recovery and treatment processes. Even if the industrialsludges are seen as wastes, they can represent an important resource if are properly managed in the storage, treatment andrecovery processes. This paper aims to identify some methods to optimize the coagulation and flocculation process...
Autori: Mariana Turcu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26444

AbstractA lab-scale packed-bed biofilm channel reactor that operates as a plug-flow system equipped with top aeration modules wasconstructed and evaluated. To assess the reactor performance a microbial community able to degrade linuron was used. Changingthe fluid flow rates and the linuron concentrations in the inflowing medium the volumetric loading rates of linuron (BV,L) weregradually increased from 0.29 to 14.93 mg/Lh. During the operation of the reactor, an airflow rate of 0.15 ą 0.05 L/min...
Autori: Erick Marrón-Montiel
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26465

AbstractThe aim of this study is to investigate new perspectives with respect to the greening of the wastewater collection, subsequentlyassessing the value of the vacuum over the conventional wastewater collecting system in rural areas. The research was framedfrom the perspective of policy makers to aid in making decisions about benefits on long term horizon in implementing ecoinnovativeinfrastructure technologies. The study postulates the hypothesis that the vacuum sewerage system is technologi...
Autori: Iulia Carmen Ciobotici Terryn
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26456

AbstractIntegration in the European Union has faced Romania with new challenges and objectives out of which sustainable developmentin rural areas is a priority. A diverse and efficient rural economy is needed, capable of generating resources that will increase thequality of life and observe environmental protection. The analysis presented in the paper brings into evidence economic, socialand environmental characteristics from the Romanian rural areas, compared to EU-27 and a series of developed ...
Autori: Camelia Burja
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26457

AbstractRomania has implemented the most generous program of renewable energy development from the entire European Union. Thiswork studies the implications of the accelerated development of renewable energy and especially wind energy. Because of theinstability of this energy, the need to resort to more than what was recommended for the classic energy was inevitable. That iswhy the favorable impact on the environment was below expectations. Also, important unfavorable economic effects haveemerged...
Autori: Eugenia Grecu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26458

AbstractThe present study is an exploratory one representing the first endeavor to test the opinion of a small group of EnvironmentalEngineering students from the “Gheorghe Asachi” Technical University of Iaşi, Romania in terms of environmental issues. Thepurpose of the research presented in this paper is to determine the opinion of the students who are likely to become professionalsin the field of Environmental Engineering, on the consequences of the Roşia Montană - Gold Corporat...
Autori: Carmen Cătălina Ioan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26459

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

AbstractThe present contribution describes the investigation of a solar air collector for space heating in order to develop more efficientand cost effective energy process. Various configurations of absorber and different air flows through the collector were tested.The influence of the air mass flow on the air outlet temperature and thermal efficiency has been studied. The thermal efficiency,fluid outlet temperature, heat increase and heat losses of the collector are calculated depending on the ...
Autori: Lizica Simona Paraschiv
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26468

AbstractThe paper analyses the hydrologic parameters of the Tarata perimeter with alluvial soils, in order to estimate the values of theTazlau River behaviour, in case of flooding. Tazlau River flow rate has an annual average value of 4.9 mł/s, with a torrentialcharacter when the level of precipitation is increasing. The analysis of this perimeter is of interest today as a result of the existingexcessive erosion. We identified a possible solution to reduce soil erosion through the exploitation o...
Autori: Stelian Cartacuzencu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26469

AbstractPathogenic bacteria are fetal to human health, requiring cost-effective and safe approaches to be removed from drinking watersource. With poly-allylamine-hydrochloride (PAAH) stabilization, magnetic nanoparticles (MNPs) were introduced in this studyto remove pathogenic bacteria by electrostatic interaction and magnet capture. High removal efficiency was achieved for fourmain pathogenic species, as Escherichia, Acinetobacter, Pseudomonas and Bacillus, and over 99.5% of the pathogens can b...
Autori: Yunfeng Xu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26475

AbstractThis study aimed to assess the ability of microorganism populations and two aquatic plant species (water hyacinth - Eichhorniacrassipes Solms and water morning glory - Ipomoea aquatica) to treat domestic wastewater in Nhue Giang pond, Tay Mo village,Tu Liem District, Hanoi City in Vietnam. The results showed that microorganism populations in the pond water contained all ofgroups of microorganisms including bacteria, Actinomycetes, mold and yeast. In water inlet and outlet samples, bacter...
Autori: Nguyen Thi Loan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26476

AbstractThe present study was undertaken to experimentally evaluate the heavy metal (HM) removal capacity of a municipal wastewatertreatment plant (WWTP) as a kind of mass balance. The aim of the work was to find a water or sludge stream in the WWTP thatcould be treated separately for heavy metal removal to maximize the same efficiency of the whole treatment technology.Although literature says that the HM content of sewage accumulates in the sewage sludge, the experimental results showed nocompl...
Autori: Gábor Gulyás
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26477

AbstractThe performance of some complex coagulants derived from weak and medium anionic polymers and medium cationic surfactantin coagulation-flocculation process for water treatment was experimentally investigated by carrying out kinetic studies and bydetermining the optimum coagulant dose. The complex coagulants were prepared from weak anionic and medium anioniccopolymers of acrylamide and sodium acrylate with the commercial names Praestol 2515 and Praestol 2540, and mediumcationic surfactant ...
Autori: Constantin Bobirică
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26478

AbstractWater is essential for development and its use for the industrial and agricultural sector has grown to exceed natural supplies inmany parts of the world. Businesses have became more aware of the water-related risks of their products, facilities and/or supplychain and started to consider the water accounting tools useful for identifying the “hotspots” related to water use and its socialand environmental impacts, improving operational efficiency and communication with stakeholders.The main...
Autori: Simona-Andreea Ene Popa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26482

AbstractIn this study, the reduction of phenolic compounds and other organic pollutants from greenish black (GB) and dark brown (DB)olive mill wastewater (OMW) was investigated. Ultrasonic irradiation in combination with aerobic biodegradation was adoptedas the treatment technique. Operational parameters such as the duration of ultrasonic irradiation, ultrasonic power intensity andultrasonic frequency were tested to determine their effects on phenol, BOD, and COD degradations. It was found that ...
Autori: Zakaria Al-Qodah
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26484

AbstractBiodegradation is a “green”, powerful and cost-effective way to remediate polluted environment. Still traditional biodegradationtechnologies of hazardous hydrophobic pollutants are generally limited by low bioavailability of such contaminants. That is whythere is a need to develop innovative approaches to enhance the efficiency of biodegradation. The aim of the present work was todevelop the basis of an innovative eco-friendly wastewater treatment technology for remediation of effluents ...
Autori: Tatiana Pantsyrnaya
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26487

AbstractThe conducted research has proved the dependence of gas flow rate in the separate channels of the two-level multichannel cycloneat a different inflow velocity and the number of channels. The carried out investigation demonstrates the dependence of changesin velocity in the channels under varying relations between peripheral and transitional flows. The work of a cyclone of the channelis based on centrifugal forces and an additionally occurring filtration process caused by the interaction ...
Autori: Pranas Baltrėnas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26488

AbstractThe purpose of the present study is the comparative investigation of the calcium cations removal from aqueous solutions usingtwo strong acid cationic resins recommended during the last years for water softening. The performances of the two resins wereevaluated by the means of the cationic exchange capacity and the retention degree of the calcium cations. The evaluation of thetwo resins behaviour in the ion exchange process was performed by the means of the FTIR spectra recorded on the re...
Autori: Liliana Lazar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26489

AbstractThe paper presents a hybrid method for the advanced removal of low biodegradable organic compounds from water, bycombining the separation selectivity of the membrane with the oxidation efficiency of the photocatalytic process. The aim of thisstudy is to evaluate the performance of the hybrid method to remove toxic compounds from wastewater. The advanced oxidationprocess, based on a photocatalytic reactor with continuous recirculation, ultraviolet (UV) radiations and a membrane, was usedf...
Autori: Cristina Orbeci
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26490

AbstractThe objective of this study is air pollutants discharging on active centers, depending on its relative electric permittivity, effectivein thermal, chemical and mechanical hydrogen relaxation enabling the fastest velocity of pollutant heat transport. The diagnosticsof relative electric permittivity is carried out on the basis of the daily pollutants mass concentration monitoring results, in sixthday period in the various seasons and locations in Romania and Serbia. The monitoring results ...
Autori: Milan Pavlović
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26507

AbstractAt the University of Debrecen, the Department of Electrical Engineering and Mechatronics operates in the BuildingMechatronics Research Center, where researchers took the initial steps of constructing an intelligent and sustainable building,which involved the configuring of the research infrastructure and the measurement network. In this article, we present a possibleapplication and several advantages of the developed measurement network, which are principally conducive to monitoring thee...
Autori: Eva Adamko
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26530

AbstractThe Electrical Engineering and Mechatronics Department has developed a Building Mechatronics Research Center, whereprofessors and researchers engage in several projects regarding the energy consumption of buildings, which are focused on theimportance of the economic return of building modernizations via simulations. In this article, the prevalent energeticmodernization of buildings and their payback period in Hungary are introduced....
Autori: Emese Bánóczy
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26531

AbstractThis paper will focus on the 2012/27/EU Energy Efficiency Directive (EED). Because the EED is a rather new legal act, itsassessment from an environmental law perspective has been neglected in the scientific literature. The previous regulation(Directive 2006/32/EC on end-use energy efficiency) has already been analyzed from an ecological point of view (Bányai, 2013).Therefore, the next question automatically arises: does the new directive take steps to improve the European Union (EU)regul...
Autori: Orsolya Bányai
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26532

AbstractIn European countries, because of low fossil fuel reserves, energy saving is one of the primary research goals in every energyconsumer sector. In the last several years, several directives were elaborated by the European Commission to enhance the energyefficiency in buildings and increase the use of renewable energy sources. In European countries with temperate climates, in aresidential building with a “traditional” insulation of the envelope, heating represents approximately 65 to 75% o...
Autori: Imre Csáky
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26534

AbstractIn this paper, we develop a rigorous theoretical framework and a practical implementation for the evaluation of the energy- andcost-saving potential of buildings. The goal is to promote sustainability in the context of building energetics by achieving themost efficient, optimal exploitation of the financial resources available for refurbishments. The practical realization of thisconcept requires the evaluation of the optimal refurbishment cost that maximizes the net energetic or financia...
Autori: Árpád Csík
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26535

AbstractIn European countries with temperate climates, heating represents approximately 70% of the total energy consumption of aresidential building. Different Directives of the European Parliament and Council prescribe the enhancement of energy efficiencyand the reduction of energy demand of buildings. Consequently, the control of delivered heat is indispensable. The properoperation of the control system is possible only for balanced central heating systems. In the case of central heating syste...
Autori: Sándor Hámori
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26537

AbstractThe electricity consumption of a country is influenced by several parameters of the national economic structure, the level ofsocietal advancement and the economic climate. Indicators based on the rate of GDP and electricity consumption are widely usedfor characterizing the productivity of an economy. In this paper, the electricity consumption of the household and productivesectors is analyzed based on reference electricity consumption (proportional to GDP) and the relationship between co...
Autori: Judit T. Kiss
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26540

AbstractAmong the various environmental problems arising today, special attention must be paid to the issues related to energy; inparticular one of the most important tasks to address environmental issues is the decreasing of the energy consumption ofbuildings. As a result, much attention has been given recently to research projects aiming to analyze the technological,economical and environmental features of energy efficient buildings. This paper examines such buildings in four regions ofEurope ...
Autori: Gábor Kozma
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26543

AbstractThe aim of the study is to reveal the energy-efficient technologies, related knowledge and information sources of the populationin the Hungarian Northern Great Plain Region and to gain a understanding of their attitude towards the implementation of thesetechnologies. The survey included questions about the alternative building technologies as well as the cost burden limits ofconsidering their application. Special attention was given to getting information about the energy characteristics...
Autori: János Pénzes
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26547

AbstractSocial and economic development can cause land cover changes that significantly affect ecosystem services and functions. Thisstudy investigated the temporal variation in ecosystem service values in response to land cover changes caused mainly by humanactivities in Harbin City, one of the fastest growing metropolitan areas in northeast China. The aim was to provide guidance forregional sustainable development. An evaluation method for ecosystem service values based on land cover change wa...
Autori: Zi Tang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26556

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

AbstractThis paper presents an optimization procedure to minimize the cost of drying in a solar cabinet dryer based on the results of amathematical model. The model has been developed previously for performance analysis of a solar cabinet dryer. The optimalvalues for geometry of the solar collector, mass flux of air through the collector, and initial moisture content are obtained in away that the drying cost is minimized. The results indicate that to optimize the drying cost, the best values of ...
Autori: Samaneh Sami
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26564

AbstractThe objective was to study the degradation of azo dye C.I. Acid Orange 7 (AO7) and intermediates for its synthesis sulphanilicacid (SA) and 2-naphthol (2-N) by Fenton process. Full factorial design and response surface methodology were applied to modelthe system behavior influenced by studied process parameters ([Fe2+] and [H2O2]).Optimal process conditions were determined on the basis of mineralization efficiency. The effectiveness evaluation of appliedtreatment process was conducted on...
Autori: Sanja Papić
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26569

AbstractThe hotel industry constitutes a major sector of the wider tourism industry and, in common with other industries, hospitalityoperations inevitably entail environmental impacts. Requirements for corporate financial reporting are commonplace, but publicdisclosure of the environmental effects of organizations’ economic actions - referred to as environmental reporting – whilegenerally only a voluntary commitment offers a potentially valuable contribution towards assessing the industry’s glob...
Autori: Patricia Milanés-Montero
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26572

AbstractWe reported the results of an isotopic study aimed at evaluating the medium to long-term effects of different water qualities anddeficit irrigation strategies on the ecophysiology of grapefruit in a 7-year-old plantation in SE Spain. For a better understandingof the interaction between nitrogen and salts from reclaimed water, RW, an experiment using natural abundance (δ) of 15N wasconducted. This study showed that in grapefruit crop irrigated with RW leaf δ15N value increased. ...
Autori: Cristina Romero-Trigueros
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26573

AbstractThe aim of the present work is to study the performance of a constructed wetland for domestic wastewater depuration alsoworking as a microbial fuel cell (MFC) under two different subsurface flow modes in the upper cathodic compartment (horizontalflow, HF, or vertical flow, VF), and to compare the efficiency under both situations. A pilot-scale subsurface constructed wetlandtreating domestic wastewater was used, and the installation also included the electrodes and devices needed to work ...
Autori: José Villaseńor Camacho
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26574

Abstract This work performs an energy flow case study on the cosmetics industry in Taiwan. In addition, the energy-saving potential of these options is evaluated. It is found that the total potential energy saving amounts to around 2397.0 GJ. It represented a potential reduction of 179.8 tonnes in carbon dioxide emissions. This study establishes an energy flow analysis and energysaving method for this case study, in addition to identifying potential energy-saving areas. The greatest energy-s...
Autori: Te-Li Su
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26591

Abstract Patzcuaro Lake, placed in the lacustrine zone of Michoacán (central México), has four municipalities around its shoreline, and is an important tourist attraction in the region. Because the area is predominantly rural it lacks many efficient public services, amount them adequate management of solid wastes that is reflected in the insufficient collection services and lack of landfills in the area. The object of this research was to determine the local environmental perce...
Autori: Otoniel Buenrostro
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26604

Abstract The present study deals with the removal of Cr (VI) from aqueous solution by polypyrrole (PPy). Response surface methodology (RSM) was applied for the design and analysis of experiments in the optimization of pH, temperature, initial concentration, contact time and adsorbent dose during the removal of the Cr (VI). The optimum adsorbent dose, temperature, initial concentration of Cr (VI), pH and contact time were found to be 0.8 g, 46.5 oC, 187.5 mg/L, 5.3 and 15.4 min respectively. ...
Autori: Ehsan Hasani
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26614

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 There is broad consensus that adaptation to climate change is necessary and urgent. Numerous documents and guidelines are available that provide advice on how to incorporate climate hazards and risks into spatial policies on the global, European and national scale. The experiences of less developed countries have shown that, rather than simply cascading uniform procedures, methods and techniques of adaptation down from higher to lower levels of governance, a realistic approach calls...
Autori: Nada Lazarevic Bajec
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26612

Abstract The feasibility of catholyte-conditioning to enhance the electrokinetic (EK) remediation of cobalt and lead polluted soil has been investigated in this study. Electrokinetic experiments were conducted using an EK cell 10 cm in width, 10 cm in height, and 50 cm in length. Plate type electrode of graphite was used as electrode material. Two experiments were conducted under constant voltage condition (2 V/cm). The pH values of the soil significantly affect the removal of Co and Pb ions...
Autori: Mahdi Bahemmat
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26623

Abstract A model of an irreversible combined thermionic-thermoelectric generator with internal and external irreversibilities is established in this paper. The performances of the combined generator, in which the heat transfers obey radiative heat transfer law, are analyzed and optimized by using the combination of finite time thermodynamics and non-equilibrium thermodynamics. The general expressions for power output and efficiency versus drop voltage are derived. The influence of finite rat...
Autori: Zemin Ding
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26624

Abstract The environmental impact assessment (EIA) is a compulsory evaluation instrument for environmental management and decision making processes and applies to different phases of activities (plans, programmes, projects and /or existing production or services), because it measures the natural and anthropogenic activities effects upon the environment. These impacts may affect the cultural richness, biodiversity, social-economic conditions and human health as well as the ecosystem equilibri...
Autori: Brindusa Robu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26645

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 Environmental contamination by antimony has been described as a critical issue in many articles. In this study, the Sb(III) removal by two brown algae, Sargassum muticum and Aschophylum nodosum, has been tested. Algae were collected in Viana do Castelo beach (Portugal). Preliminary tests were carried out and, based on the results, Sargassum muticum was chosen for subsequent experiments. Kinetic data were described by pseudo second order model. After about four hours contact time the...
Autori: Gabriela Ungureanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26659

Abstract The class of xanthene dyes has a complex chemical structure, which showed to be toxic for mixed culture of microorganisms (i.e. anaerobic granular sludge). Because of the unwanted effects of Erythrosin B (Ery B) on environmental components and some food confirmed previously, the dye was chosen in this study to evaluate its ecotoxicity. Also, the Ery B photocatalytic degradation products were assessed in terms of their ecotoxicity. Three-days of seed germination and root growth test...
Autori: Laura Carmen Apostol
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26660

Abstract This study focused on the use of jet aeration to treat printing and dyeing wastewater. The related environmental factors influencing the dynamical efficiency of a jet aerator were investigated. Results showed that an ideal linear relation existed between dynamical efficiency and working pressure (R2 > 0.98), with dynamical efficiency decreasing gradually as the working pressure increased. When the gas–liquid ratio was approximately 0.6:1 to 1.4:1, more bubbles were formed b...
Autori: Chunsheng Le
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26664

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 Supercritical fluid and ultrasound assisted extractions were applied as a first step in a complex processing of spruce bark in order to recover polyphenols compounds. The aim of the study was to compare the efficiency of these "green" processes with a conventional extraction technique (ethanolic extraction). Supercritical fluid extraction was carried out in two steps: (i) static extraction for 15 min at 1000 psi with pure CO2 and (ii) dynamic extraction for 45 min at 35, 4...
Autori: Adina Iulia Talmaciu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26680

Abstract In the present paper we studied the competitive transport of p-nitrophenol (pNP) and 2,4-dinitrophenol (2,4-dNP) from aqueous media using the technique of liquid membranes. This technique is very efficient, economic and selective when compared to other removal techniques of phenolic derivatives. The paper presents the influence of the sodium carbonate concentration from the stripping phase, the influence of the concentration ratio [2,4-dNP]/[pNP] upon the selectivity of the transpor...
Autori: Ioana Diaconu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26681

Abstract β-galactosidase from Aspergillus oryzae was strongly immobilized on magnetic particles functionalized with amino groups. By simple incubation without any activating agents, electrostatic interactions between amino groups and enzymes allowed obtaining a strong linkage. The immobilization efficiency was studied with the quantification of amino groups of the particles and of immobilized β-galactosidase. Kinetic parameters, especially the maximal velocity Vmax and the affinity...
Autori: Kalim Belhacene
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26682

Abstract The performance of electrocoagulation (EC) process, a non-specific electrochemical technology, was investigated for the removal of carbamazepine (CBZ), an antiepileptic drug, from water. Experiments were carried out in synthetic wastewater in a batch cell. The respective influences of some key process parameters were studied, such as mixing conditions, initial pH, and current on aluminium electrodes. Experimental results showed that a CBZ removal efficiency of 62% was observed under...
Autori: Tania Yehya
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26683

Abstract The adaptation of commercially available ion-selective electrodes (ISEs) for use in wastewater matrices was demonstrated using multivariate analysis and optimization with the Microsoft Excel Solver tool. The electrodes were characterized in pure analyte solutions, and their parameters were estimated using multivariate analysis and Solver optimization. The ammonium, nitrate, and nitrite ions were measured in model systems that were designed to simulate wastewater. The accuracy of the...
Autori: Natalija Koprivanac
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26687

Abstract Bioplastics are biobased materials, usually easy biodegradable, derived from renewable resources. Evolution of bioplastics production is related to: bio starch and starch mixtures (74.5%); bioplastic products from fermentation (13%), bioplastic from petrochemicals materials (12.5%). They are seen as a viable solution to avoid some environmental impacts caused by the use of fossil-based conventional plastics. In this context, the general objectives of this study entail the analysis a...
Autori: Elena-Diana Comaniţă
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26688

Abstract Data envelopment analysis (DEA) has been recently utilized as a multiple criteria tool for environmental performance evaluation by incorporating undesirable outputs. Most DEA models to measure environmental performance follows the assumptions of crisp data and radial measures. In this paper, we present a fuzzy non-radial DEA approach with Russell measure for environmental performance evaluation. A pair of bi-level mathematical programs is formulated to calculate the lower and upper ...
Autori: Zhongbao Zhou
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26691

Abstract In the process of chitin extraction, shrimp shell powder was treated by Lactobacillus plantarum culture. The efficiency of microbial demineralization (DM) under aerobic and anaerobic conditions was investigated. The shrimp shell powder was incubated at 30 °C for 6 days with L. plantarum. In order to prepare microbial culture, inoculums size was 5% for culture inoculation. Date syrup with total reduce sugar concentration of 30 g.L-1 was used. The value of pH in anaerobic conditio...
Autori: Marjan Khorrami
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26692

Abstract In this research, a small-scale biogas plant using methane fermentation was developed. The electrical energy consumed by the heater/pump and the outside temperature of the small-scale biogas plant were logged from 1 July 2007 until 31 July 2009. The thermal efficiency of the small-scale biogas plant was calculated based on the electrical energy consumed by the heater/pump and the generated gas quantity. The results showed that a total thermal efficiency of 17.5% was obtained in the ...
Autori: Daisuke Tashima
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26694

Abstract The main purpose of this research was to study the biodegradation ability of atrazine by using Arthrobacter sp. as free and immobilized cells of the strain DNS10, under several important environmental factors such as temperature, pH, salinity, substrate concentration. Furthermore, this paper objective was also to assess the process considering the immobilization under extreme conditions, such as high salinity and high atrazine concentration. DNS10 was immobilized on a sodium alginat...
Autori: Zhang Ying
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26702

Abstract In this study, the efficiency of Fenton’s process to remove nickel (II) from industrial plating effluent was investigated. The effect of pH, contact time, concentrations of Fe2+ and H2O2 were surveyed. Kinetic experiments were performed in order to predict the nickel (II) removal rate from wastewater. At pH 1 to 4, nickel (II) removal efficiency increased and declined at pH > 4. The maximum nickel (II) removal efficiency was 98% at 60 min contact time, pH: 4, and Fe2+ and H...
Autori: Mohammad Malakootian
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26704

Abstract The removal efficiency of algal biomass Chlamydomonas reinhardtii for Pb and Cu metal ions was evaluated in single and binary metal systems. Biosorption experiments were performed in solutions containing 0.2 g L-1 of algal biomass at 30oC and pH 6. Initial metal ion concentrations ranged from 10-7 M to 10-6 M. Thermal analysis of the biosorbent indicated that algal cells are composed of groups containing C, H, N, and S. The presence of ionisable functional groups responsible for bio...
Autori: Roula Flouty
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26709

Abstract One of the changes in marketing refers to the redirection of focus from profit to sustainable development. Sustainability marketing can influence sustainable development. The key contribution of the paper is the presentation of holistic approach to sustainable development and sustainability marketing through three dimensions: goals, actors and capital. Holistic management of sustainability marketing in the process of sustainable development is focused on economic, environmental and ...
Autori: Beba Rakic
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26711

Abstract Currently, conventional energy sources i.e. fossil fuels represent the main segment as regards electricity generation. Thus, their contribution to global CO2 emissions is considerable. This study considers carbon capture and storage (CCS) as a promising solution for the environmental problems we are now facing. Based on previous research, post-combustion capture (PCC) has been recognized as being the more appropriate technology for CO2 capturing from the existing power plants. The m...
Autori: Ales Hribernik
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26714

Abstract The paper investigates the role of the Common Agriculture Policy support in the economic sustainability of sheep breeding farms from North-Western Romania (Transylvania), focusing particularly on the Agri-Environment Schemes (AES). The region has important High Natural Value (HNV) grassland areas significant for bio-conservation. To analyze their importance in the overall economic viability, individual data was collected from 207 farms using a stratified sample. A principal componen...
Autori: Mugurel I. Jitea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26716

Abstract Magnetite nano-particles (Fe3O4) were synthesized in order to be used as adsorbent for some toxic metal ions (Cr, Cd, Ni and Cu) present in aqueous solutions (industrial waste waters). The amount of toxic metals (Cr, Cd, Ni and Cu in quaternary aqueous solutions) before and after contact with the magnetite nano-particles was analyzed by flame atomic absorption spectrometry (FAAS). Different operational parameters such as metal concentration and pH of the quaternary solution, as well...
Autori: Ecaterina Matei
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26721

Abstract Impact damage is considered the primary cause of in-service delamination in composite materials and promotes significant reduction in residual strength. Non-destructive techniques (NDT) include several methods able to detect the shape and the size of the interior damages without destruction of the structure or component, which is economically advantageous. The aim of this paper is to evaluate the properties after low velocity impacts using an experimental-numerical procedure based o...
Autori: Ana Martins Amaro
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26726

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 This study was carried out to investigate the adsorption of methylene blue (MB) onto pumice powder, as a low-cost adsorbent for the removal of dyes. The experiments were designed based on a central composite design (CCD) and the process was analyzed and modeled using response surface methodology (RSM). In order to study the adsorption process, three important factors viz. pumice dosage (20- 50 mg/50mL), MB concentration (20-40 mg/l) and contact times (5- 35 min) were chosen as varia...
Autori: Kiomars Sharafi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26729

Abstract In paper processes, the variability of effluent composition and flow is impossible to predict and generally depends on the type of production method used and the manufacturing breakdowns suffered. Wastewater treatment plant operators find it difficult to maintain the efficiency of biological treatment processes. This paper focuses on activated sludge treatment modelling of paper mill wastewater to provide operators with additional support. Based on both standard activated sludge mod...
Autori: Catherine Cadet
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26732

Abstract Wind erosion, which strongly affects both plant and soil development in arid environments, is dependent on soil properties, wind characteristics and plant cover. In a semiarid zone in SE Spain, a new technique consisting of dusting plants with a forced wind stream reduces tillage and significantly increases productivity. By using a blower once a year, dust is raised and partly retained by plants, and eventually ends up in the understory. To assess the influence of this technique on ...
Autori: Carlos Asensio
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26735

Abstract Optimum conditions for the reusability of red mud were explored testing both dried and HCl-activated red mud as a coagulant in the treatment of dyehouse wastewater. Treated dyehouse wastewater was further reused in five dyebaths with different mixture ratios of distilled water (D) and treated wastewater (W) for dyeing fabrics at three color strengths of three reactive dyes. Sludge obtained from the optimum dosage of HCl-activated red mud was tested for its reuse potential in the pro...
Autori: Aylin Yildiz
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26738

Abstract Today, a new generation of software applications can be developed, as IT services developed by software providers can be integrated by solution developers in complex control and monitoring Smart Building Management solutions. This paper introduces the concept of Virtual Smart Building Service Enterprise (SBSE) as a novel perspective to develop an innovated services ecosystem for smart buildings. The Virtual SBSE allows different stakeholder categories to interact in order to develop...
Autori: Monica Drăgoicea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26739

Abstract The paper presents the most economical and less polluting retaining wall system, calculated for the same site, having few different common heights used in design. The paper will highlight the importance of an environmentally friendly solution, but also the most economical solution, which should be the main criteria in the design. Two of the tools used in environmental life cycle assessments (LCA) are the carbon footprint and the energy footprint. The quantification of the carbon and...
Autori: Vasile Farcas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26753

Abstract In this study, the electrocoagulation process using aluminium anodes was tested as alternative for coagulation process for the drinking water treatment using two types of real groundwater sources, characterized by low turbidity, moderate and high organic load, and nitrite and ammonium species for one of them. The optimum operating conditions determined to be pH 6.5, current density (i) 25A/m2 at 30 min resulted in removal efficiency of over 70 % for total organic carbon (TOC) parame...
Autori: Anamaria Baciu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26756

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 Waste management does not try to dispose waste anymore but is searching for the best solution to manage valuable and scarce resources and reduce the negative impact on the environment. Preoccupation in Germany with regard to optimization of waste recuperation and valorization increases and separate collection systems for different waste fractions are taken into consideration. Within this study a pilot project was set up and its results are presented below. The investigation evaluate...
Autori: Mihaela Berechet
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26758

Abstract This paper presents the application of life cycle assessment (LCA) modelling used in the process of comparing the best technology for disposal municipal solid waste (MSW) in the Banjaluka region. Three scenarios were considered: unsanitary landfill, sanitary landfill with gas collection and burning on flare and sanitary landfill with energy recovery. The Banjaluka landfill is currently an unsanitary landfill because a system for collecting and treating gas has not yet been implement...
Autori: Draženko Bjelić
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26767