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

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

River runoff forecasting is one of the most complex areas of research in hydrology because of the uncertainty of hydrological and meteorological parameters and scarcity of adequate records. Artificial neural networks (ANN) can be an efficient way of modelling stream flow processes as it is capable of controlling and modelling nonlinear and complex systems and does not require describing the complex nature of the hydrological processes. In this study, daily river flow is forecasted using two ANN ...
Autori: Cintia Bertacchi Uvo, Dimitri Namgaladze, George Gabitsinashvili
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25110

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

An attempt has been made to develop Water Quality Index (WQI), using six water quality parameters at riverside stations located in the vicinity of temples of Dakshina Kannada district, Karnataka, South India. Rating curves were drawn based on the tolerance limits of inland waters and health point of view. Bhargava WQI method and Harmonic Mean WQI method were used to find overall WQI along the stretch of the river basin. Five point rating scale was used to classify water quality in each of the st...
Autori: Santosh M. Avvannavar, Surathkal Shrihari
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25119

The Kyoto target for Romania was to reduce its carbon dioxide emissions by 8 % from the 1989 levels. The 1989 emissions were around 260 million tones. In 2000 the net CO2 emission - some 125 million tones - were 54% of the net CO2 emission in the reference year -1989, leaving some 115 million tones as a reserve or as a tradable resource to other countries that can not met their Kyoto targets. Assuming that Romania will sell 100 millions tones of its extra quota in accordance to Article 17 under ...
Autori: Ciprian Sebastian Munteanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25129

AbstractThe Kyoto target for Romania was to reduce its carbon dioxide emissions by 8 % from the 1989 levels. The 1989 emissions werearound 260 million tones. In 2000 the net CO2 emission - some 125 million tones - were 54% of the net CO2 emission in the reference year -1989, leaving some 115 million tones as a reserve or as a tradable resource to other countries that can not met their Kyoto targets. Assuming that Romania will sell 100 millions tones of its extra quota in accordance to Article 17...
Autori: Koshy Varghese, L. S. Ganesh,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25130

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

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

AbstractThe mechanisms in the shaping of organic food in Denmark since the 1970'ies are analysed as a contribution to the discussion of strategies for a more sustainable production and consumption of food. The background is the major  achievements in Denmark within organic food since the 1970'ies, but also the recent years' reduction in the land converted to organic farming. The analyses are based on experiences from projects, analyses and literature and draw on innovation theory and theory...
Autori: Michael Sogaard Jorgensen
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25153

In this work, the ability of Romanian peat for sorption of Pb (II) ions from aqueous solution has been determined using the batch experimental techniques. The sorption equilibrium has been studied at different pH values. The equilibrium adsorption level was determined to be dependent of the pH of solution and initial Pb(II) concentration.The equilibrium adsorption capacity of Romanian peat sorbent for lead has been described by seven types of mathematical model isotherms, namely: Freundlich, Lan...
Autori: Brindusa Robu, Corneliu Cojocaru, Laura Bulgariu, Matei Macoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25160

Contain all the articles from this issueICEEM /01 PLENARY CONFERENCETen years of Environmental Engineering and Management education and research at the Technical University of IasiMatei Macoveanu, Carmen Teodosiu ICEEM/01  - Environmental Engineering SectionRemoval of nitrogen oxides from Diesel exhaust: Laboratory studies for development of an SCR-catalyst-system using solid urea as reducing agentWerner Weisweiler High temperature desulphurization of hydrogen sulphide containing ...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25167

Contain all the articles from this issueICEEM/01 -- Environmental Engineering SectionThermodynamic and kinetic study of gas desulphurization by adsorption on zeolites  Ion Untea, Dan Brasoveanu, Madeleine Dancila, Szidonia Bocskor Mixed oxides derived from vanadium substituted layered double hydroxides as catalysts precursors for SO2 oxidationGabriela Carja, Ionel Popa, Gabriela Ciobanu, Nicolae Aelenei The impact of energy production on environment in RomaniaCarmen Zaharia, Mioara Sur...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25168

Contain all the articles from this issue:ICEEM/01 -- Environmental Management Section Corporate environmental competence: A concept for characterising and assessing the environmental practice in companies and product chainsMichael S?¸gaard J?¸rgensen, Marianne Forman Life cycle assessment of some alternatives for the supply of thermal energy in the municipality of Iasi (Romania).Nicolae Peiu Management options for the industrial and municipal wastes in the city of Iasi Carmen Teod...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25169

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

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

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

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

AbstractSolid waste management in Malaysia has become an increasingly important task of local government authorities over the recent years as a result of urban population growth, industrialization and an increase in quantity and variation in the types of waste generated. For this reason the government of Malaysia through the Ministry of Housing and Local Government has taken various measures to promote recycling amongst its population. However, a recycling program is only successful if household...
Autori: Abdelnaser Omran, Adam D. Read
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25228

AbstractEnvironment is a major issue which confronts industry and business in today's world on daily basis. Different industrial activities are degrading various environmental components like water, air, soil and plant vegetation. Cement industry is one of the 17 most polluting industries listed by the Central Pollution Control Board (CPCB). The Jaypee Rewa Cement Cement industry, Rewa, Madhaya Pradesh is located between 24o 33' North longitude and 81o 10' east latitude and is situated at Jay Pr...
Autori: Baby Sunisha, Nagpure Ajay Singh, Shrivastava Preeti, Shukla Ravindra Nath, Shukla Sudheer Kumar, Singh Deepali, Vivek Kumar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25233

AbstractThe disinfection of water containing microorganisms by exposure to pulsed-discharge plasma using a low-temperature gas-liquid hybrid discharge (HD) reactor was studied.The HD reactor consists of a plexiglas cylinder containing the liquid of high voltage electrode above liquid' s surface and grounded electrode submerged in the liquid. The HD could produce both arc discharges in gas and liquid phases. The high-energy plasma arc produces a pressure shock wave, which kills the targeted micro...
Autori: Gamal M. El-Aragi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25242

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

AbstractWith a greater emphasis on the increasing number of diesel vehicles provided with pollution control systems complying to regulatory standards these days than ever before, it is also necessary to look into the emission characteristics of the diesel vehicles with respect to vehicle-related parameters with a view to ascertain as to how the tail pipe emission from the diesel vehicles could be kept under control by adopting suitable strategies. Considering the constraints of data collection a...
Autori: Manoranjan Parida, Mishra Rajeev Kumar, Pandey Govind
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25248

AbstractThe synthesis of some grafted polysiloxane and azo-polysiloxanes with potential applications as rheology modifiers or surfactants for waterborne paints is reported. Nowadays it became very important to design environmentally friendly systems exhibiting the best end-uses properties. Due to their complex architecture and their sensitivity to UV radiation the studied polymeric systems exhibit very interesting rheological properties. All the polymers containing the azobenzenic groups in the ...
Autori: Constanta Ibanescu, Ioana Moleavin, Iulian Nor, Nicolae Hurduc, Viorel Sandu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25252

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

AbstractThe paper reports experimental refractive indices of binary systems iso-propanol - water and iso-propanol - toluene over the entire range of composition at different temperature. Excess refractive indices were evaluated from the experimental data obtained. This derived property was fitted to variable-degree polynomials. The results obtained have been discussed and interpreted in terms of the type and nature of the specific intermolecular interactions between the components....
Autori: Catalin Lisa, Cerasela Huhurez, Gabriela Lisa, Ramona-Mihaela Matran
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25256

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

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

AbstractSelf-regulation can be defined as a public scheme in which private parties volunteer to meet standards established by public authorities; this is the case of the European Commission's eco-management and audit scheme (EMAS). The EMAS aims at promoting improvement in industry's environmental performance by the implementation of company-level environmental management systems, and the systematic evaluation of performance by accredited auditors. Self-regulatory initiatives have in common a co...
Autori: Voicu - Dan Dragomir
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25283

AbstractThe present work describes an investigation of process of ion-exchange separation of tartaric acid in model systems. These investigations will be used for the separation of tartaric acid from secondary wine products. Their valorisation allows obtaining valuable compounds, as well as decreasing the huge quantities of wastes accumulated at wine making factories.As ionic exchangers, there have been used weakly basic anion exchanger Amberlite IRA-67 (tertiary functional amine groups) and str...
Autori: Aliona Mereuţa, Gheorghe Duca, Herbert G. Boechzelt, Natalia Marchitan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25286

Abstract In this paper preliminary results of studies concerning the extraction of uranium(VI) from soils in aqueous PEG (1550) 20 % - Na2SO4 20 % - Na2CO3 10-2-10-3 M two-phase systems are presented, as well as the spectrophotometric determination of extracted uranium with pirocatechol violet (PV). A special attention was given to the experimental factors (pH, redox potential, CO32- anion concentration and initial uranium concentration), which was found to influence both the formation and stabi...
Autori: Daniel Condorachi, Doru Juravle, Dumitru Bulgariu, Laura Bulgariu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25290

Include urmatoarele articole:� Removal of nickel from aqueous solution by Nordmann FIR (ABIES Nordmanniana (STEV.) SPACH SUBSP. Nordmanniana) cones� Determination of heavy metals in extracts and macerates from garden flowers� Biological phosphorus removal in a high performance single reactor � Advanced Cd2+ removal on dispersed TioO2-fly ash � Remediation techniques for contaminated soils� Separation of uranium(vi) from soils by extraction in aqueous PEG (1550) - Na2SO4 - Na2CO3 two-...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25296

AbstractThe 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

AbstractDepletion of world recourses, increasing pollution, and climate change make us shift from linear economy to system economy - an economy of technologies integrated to reach a non-polluting zero emissions production system. Transition to renewable resources requires replacement the present crude oil refinery by biomass refinery. Along with conventional biomass refinery technologies bioengineering and nano-technologies become significant players of systems in the design of clusters of integ...
Autori: Arnis Kokorevics, Janis Abolins, Janis Gravitis
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25304

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

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

AbstractThe Romanian strategy in the field of irrigations for the years of 2008-2011 consists of the modernization of the existing works covering about 3.1 mil. ha, while for the years of 2011-2025 the irrigation of additional area of 0.9 mil. ha is expected. In the climate conditions of Romania, the irrigation has a complementary character over the precipitations. Because of this reason, a correct regime of irrigations needs a very good correlation between watering and precipitations in order t...
Autori: Dorin Cotiusca Zauca,
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25317

AbstractThe occupational safety is that state of the working system where there is no possibility that occupational accidentsand diseases should occur. Considering the specific features of the component elements there are no such full safe working systems for men because there is always a hazard of occupational accidents and diseases.Generally speaking, all the component parts of the system, together with the relations built among them have beenconceived, designed and produced so that there is n...
Autori: Constantin Baciu, Gabriel Dragoş Vasilescu, Valeriu Plesea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25322

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

AbstractNatural hemp fibers have been evaluated for Zn (II) ions sorption from diluted aqueous solutions. In order to establish the optimum conditions, the effect of initial pH of solution, hemp dose, Zn (II) concentration, temperature and contact time of phases on the Zn (II) sorption by natural hemp has been studied. To model the Zn (II) sorption at three different temperatures the Langmuir and Freundlich isotherms have been used. The Langmuir maximum sorption capacities were determined as bei...
Autori: Carmen Paduraru, Lavinia Tofan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25336

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

- Artificial intelligence applications in the atmospheric environment: status and future trends- Kernel methods and neural networks for water resources management- Environmental decision support systems based on models and model-based reasoning- Towards an intelligent tutoring system for environmental decision makers- SBC-MEDIU: A multi-expert system for environmental diagnosis- Fast and accurate residential fire detection using wireless sensor networks- Validation of a knowledge-based risk mode...
Autori: http://www.ecozone.ro/reviste.php?RID=25377

AbstractThe authors propose a calculation example of the optimal sizes regarding the protected areas, taking into account the biological, ecological and behavioral needs of the animal species which are situated in the top of the trophic pyramid. Carnivores and great herbivores are considered the best bioindicators for the Romanian ecosystems....
Autori: Corneliu Maior, Petru Aurel Darau, Viorel Soran
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25342

Abstract        The sorption of metal ions from aqueous solution plays an important role in water pollution control and in recent years there has been considerable interest in the use of low-cost adsorbents. Many researchers have tried to exploit naturally occurring materials as low-cost adsorbents, for removing of heavy metals. In this article the removal performance of various low-cost adsorbents derived from agricultural waste or natural material is evaluate...
Autori: Raluca Maria Hlihor, Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25379

AbstractIntegrated water resources management requires planning and management activities, as well as adequate information and communication within a structure that groups different stakeholders (industry, agriculture and other types of water users, civil society representatives, university and research institutions, water authorities and waterworks companies), being thus characterized by a high level of complexity, and requiring the involvement of numerous decision-makers operating at different...
Autori: , , Luminita Lupu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25344

AbstractThe present work carries out a parallel analysis between the performances and, on the other hand, of the restrictions of two different model systems designed to assess the nearshore circulation. These are SHORECIRC, which is a widely known general prediction system for nearshore circulation and ISSM (the Interface for SWAN and SURF Models). SHORECIRC is a quasi-3D model that combines a numerical solution for the depth-integrated 2D horizontal momentum balance equations with an analytical...
Autori: Eugen Rusu, Silviu Macuţă
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25345

AbstractAn efficient design and development of the occupational health and safety managing system in a working system involves a suitable tailoring of occupational health and safety state in relation to the risk level associated to the conditions for the occurrence of general and specific hazards all through its length of operation.This paper presents a methodological approach for the analysis and for a likelihood estimate of industrial risks identified inside complex structures of the working s...
Autori: Constantin Baciu, Gabriel Dragoş Vasilescu, Tiberiu Attila Csaszar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25347

AbstractThis study deals with the radiolytical decomposition of water molecules, in the presence of some catalysts, getting out hydrogen as unpolluting and cheaper energy vector. Instead of the spent nuclear fuel elements taken out from nuclear power plants, as irradiation source it was used the 60Co radionuclide having a specific activity of 1.1.105 Ci. It was observed that the radiolytic yield of resulted molecular hydrogen from water radiolysis in the presence of used catalysts decreased as:N...
Autori: Ada Macovei, Alexandru Cecal, Dumitru Ganju, , Oana R. Haută
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25354

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

AbstractThe paper presents an original method, as well as a calculus mode of the main hydraulic parameters, for the transfer of the aeolian power from the nacelle of the tower to its base. The system proposes the existence in the nacelle of a two-, three- or poly- phased sonic generator, from which the obtained energy is transferred by some pipes to the base of the tower, where this can be easily  transformed in electric energy. The paper treats the two-phase variant. An important consequen...
Autori: Ioan I. Pop, Ioana Denes-Pop
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25356

AbstractAn experimental three-stage subsurface flow constructed wetland system was investigated for the removal of nutrient and organic matter from primary-treated domestic wastewater. Built in the Turkey Scientific and Technical Research Council-Marmara Research Center, Gebze, Turkey (Istanbul), the system consisted of a vertical flow-gravel filtration in the first stage, a horizontalsubsurface flow bed vegetated with Iris in the second stage, and a vertical-subsurface flow bed vegetated Phragm...
Autori: Bilal Tuncsiper
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25358

AbstractChemical sensors utilizing immobilized enzymes and proteins are important for monitoring chemical processes and biological systems. Glucose oxidase (GOx) from Aspergillum Niger is a flavoenzyme that has been used to determine glucose. Among the conventional methods of enzyme deposition the main strategy consists in its entrapment in an inert matrix adsorbed on the electrode surface. We report here the synthesis and physical – chemical characterization of a new bionanocomposites obtaine...
Autori: , Gabriela Ciobanu, Ion Balasanian, Simona Ratoi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25359

AbstractPulsed high voltage discharge technology is a newly developed method for knock out viruses in blood with various electrohydraulic discharge reactors. The aim of this study is to investigate the effect of an electrohydraulic discharge treatment system on Hepatitis C virus (HCV) behaviour. The electrohydraulic discharge (EHD) reactor consist of high voltage point discharge electrode above blood surface and cylindrical ground copper electrode containing the blood (in the same time act as th...
Autori: Gamal M. El-Aragi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25362

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

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

â€? Bioremediation of contaminated air using a bioscrubberâ€? Quality risk evaluation of the groundwater resources on the moldavian areaâ€? Electrochemical characterization of some dental materials in accelerated environmental testingâ€? Preliminary study of simple and Fenton oxidation with hydrogen peroxide applied on final effluents from a zootechnical farmâ€? The environmental impact assessment caused by the dykes failureâ€? Revaluation of beer industry byproducts – medical implicationsâ€? ...
Autori: http://www.ecozone.ro/reviste.php?RID=25372

â€? Photocatalytic properties of titania - fly ash thin filmsâ€? Study of the viscosity of some biodiesel – diesel oil blendsâ€? Aspects refering to technical and leaching properties of the secondary aluminium slags - cement compositesâ€? Studies regarding phenol and 4-chlorophenol sorption by surfactant modified zeolitesâ€? Cu-Ni nanostructured electrocatalysts obtained by electrocodepositionâ€? Molecularly imprinted poly (vinyl alcohol) films for the selective absorption of glycyrrhizinic ac...
Autori: http://www.ecozone.ro/reviste.php?RID=25373

â€? Photocatalytic properties of titania - fly ash thin filmsâ€? Study of the viscosity of some biodiesel – diesel oil blendsâ€? Aspects refering to technical and leaching properties of the secondary aluminium slags - cement compositesâ€? Studies regarding phenol and 4-chlorophenol sorption by surfactant modified zeolitesâ€? Cu-Ni nanostructured electrocatalysts obtained by electrocodepositionâ€? Molecularly imprinted poly (vinyl alcohol) films for the selective absorption of glycyrrhizinic ac...
Autori: http://www.ecozone.ro/reviste.php?RID=25374

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

AbstractThis paper presents an analysis of the levels of electromagnetic fields caused by cellular base stations or mobile phones, measured in some residential areas. A statistical processing of the data has also been done in order to estimate both the short-term and the long-term variability of the fields caused by cellular base stations in some apartments and on the terraces of the apartment buildings at tens or hundreds of meters distance from the antenna systems. In some places, comparative ...
Autori: Alexandru Salceanu, Ionut Nica, Valeriu David
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25381

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

AbstractThe main aspects refer to metals and refractory materials behaviour, at high temperature, to materials purifying and to achieve some chemical syntheses.The main technological parameter of the heating is temperature, heating obtained by focusing Sun's rays. The heating can be used inside the furnace to produce metallic material into a crucible, without any complementary power source.For the future, a bigger interest presents some other metals melting, more expensive than steel, such as ti...
Autori: Petrica Vizureanu, Cornel Samoila, Daniel Cotfas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25387

AbstractEquilibrium data of water vapor adsorption from wet air on several materials were experimentally determined at temperature values of 313 and 333 K and air relative humidity values ranged between 30 and 90 %. Experimental data were correlated with Langmuir and Freundlich models. The obtained results emphasize the significant difference between the water retained on the adsorbent materials impregnated with various salt solutions, and on classic adsorbents....
Autori: Ioan Mămăligă, Constantin Baciu, Stelian Petrescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25394

Abstract This paper presents the preliminary results of photocatalytic oxidation of humic acid from water using two types of catalysts, i.e., TiO2 and Ag-doped TiO2 modified zeolite (TMZ and Ag-TMZ). TMZ and Ag-TMZ, with zeolite granulation of 315-500 ?Źm was synthesized by sol-gel method, and the morphology and composition of the unmodified/modified zeolite were characterized by BET (Brunauer–Emmet–Teller) method, X-ray Diffraction (XRD), scanning electron microscopy (SEM) and energy dis...
Autori: Cornelia Ratiu, Carmen Lazau, Paula Sfirloaga, Corina Orha, Daniela Sonea, Stefan Novaconi, Florica Manea, Georgeta Burtica, Ioan Grozescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25397

Abstract Development of industrial cell culture processes needs a good engineering practice and system expertise in achieving a successful integrated process using disposable components. The bioreactors for 3D tissues systems could be an advantageous alternative in terms of low contamination risk, easiness of handling and scaling-up. A careful and strategic design of these equipments provides a better process control and a safe and reproducible production of tissue construct. They can offer t...
Autori: Anca-Irina Galaction, Dan Caşcaval, Dan Zaharia, Radu Ciorap
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25404

Abstract 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 Taking into account the statistical data gathered in two previously published papers concerning the pollution sources in the production sector, namely Finishing section, various solutions are proposed for wastewater treatment. Bearing in mind the results obtained through the sampling method on different types of water in the urban sanitary sewer system, the conclusion was that the most convenient alternative, besides the source control is the treatment in wastewater treatment plants...
Autori: Irina-Isabella Savin, Romen Butnaru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25408

Abstract The preparation of microspheres containing chitosan, sodium alginate and ibuprofen and the pH dependent drug release were investigated. The microspheres were prepared by two experimental routes: the first one starting with a chitosan/ibuprofen core subsequently coated by an alginate shell (S1) and the second one based on an alginate/ibuprofen core, later coated by a chitosan layer (S2). The physical-chemical characterization was done by using Dynamic Light Scattering (DLS), Atomic Fo...
Autori: Luminiţa Elena Balău, Nicolae Aelenei, Marcel Ionel Popa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25412

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

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

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

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

Abstract The paper presents a risk analysis and assessment of the defence linear systems failure (dykes) in case of accidental flood. Also, breach scenarios and hydrographs computation for the corresponding accidental high waters are provided. The impact assessment is highlighted through a global matrix model for costs quantification. It is also presented the flooding computation model for different versions of the linear defence systems and in a correspondent way the Inundation Accidental D...
Autori: Codruta Badaluta-Minda, Gheorghe Creţu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25433

Abstract The analysis over the underground water monitoring system and the collected data from survey drilling show that the underground water has an unsatisfactory quality due to some physical and chemical characteristics. Along with these, factors like the surface water pollution, the hydrodynamic exchange between surface and underground waters and the reintroduction in the agricultural activities of nitrates and phosphorus based fertilizers lowers, as well, the quality that it has been tal...
Autori: Ioan Crăciun, Catrinel-Raluca Giurma-Handley, Ion Giurma
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25436

Abstract The European annual consumption of plastic materials has increased from 24.6 Mtons in 1993 to 39.7 M tons in 2003 and it is likely to keep growing. Europe is faced with the challenge of managing millions of tons of waste plastics. At the same time, polymer recyclers and manufacturing industries do not find enough secondary polymers of consistent quality. Plastics production and use has a range of environmental impacts because of the considerable quantity of resources needed as raw ma...
Autori: Peter Rem, Venga Solaria, Francesco Di Maio
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25444

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 Electroflotocoagulation is used for the treatment of liquid wastes of various origins, containing suspended matter. The metal hydroxide formed by electrochemical metallic ions generation acts to aggregate the colloidal impurities, and the hydrogen bubbles evolved at the cathode allow flotation of foam containing the impurities. The aggregates formed (containing the impurities) and lifted above the solution can then be removed. Electroflotocoagulation (simultaneous electrocoagulation ...
Autori: Marius Constantin Mirica, Mirela Ioana Iorga, Adina Segneanu, Ionel Balcu, Doru Buzatu, Cristian Vaszilcsin
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25457

Abstract This work investigated the sorption removal of chromate anion, in single batch systems, from aqueous solutions. The process involves the sorption of the chromate by a series of Mg/Zn-Al - type hydrotalcites, with four Mg/Zn/Al ratios, in two forms: uncalcined and calcined at 500 °C. The calcined Mg-Al (Mg/Zn/Al = 2/0/1) material showed the highest sorption capacity: 35.7 mg/g. The three-parametered Langmuir-Freundlich model approximated the experimental equilibrium data over the con...
Autori: Laura Cocheci, Rodica Pode, Eveline Popovici, Emiliana Dvininov, Aurel Iovi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25461

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 Increasing the solar energy conversion into electrical or thermal energy represents an European and national priority, because it offers clean alternatives to the use of fossil fuels, in no pollutant systems, based on photovoltaic modules and solar collectors. The global solar radiation is the most important factor affecting the amount of energy produced by a PV module. In direct connection with the change in the solar energy conversion, the TR - Loss Coefficient (Tr??bungsfaktor) is...
Autori: , Dorin Valentin Diaconescu, Maria Valentina Dinicu (Popa), Bogdan Gabriel Burduhos
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25465

Abstract The development of energy from renewable resources is a very important action in the reduction of CO2 emissions. Hydropower is a renewable source able to reduce the CO2 emissions by more than 67 million tons / year. The paper analyzes a small hydropower plant to be implemented in Brasov region, from the environmental point of view. The reduction in the CO2 emissions brought by the small hydro is estimated by taking into account an ex-ante emission factor, based on validated and regis...
Autori: Codruta Jaliu, Dorin Diaconescu, Mircea Neagoe, Radu Saulescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25466

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

Abstract A crucial stage which makes the other directions of development of membrane processes is getting new membrane materials, to meet increasingly stringent of selectivity and productivity. Polyetheretherketone shows high stability against chemical and physical agents but is poorly soluble in most common solvents. Present studies on obtaining the support of the polyetheretherketone membranes were limited by: solubility of polyetheretherketone in concentrated sulfuric acid and fast speed a...
Autori: Mihaela Emanuela Craciun, Aurelia Cristina Nechifor, Florin Aldea, Gheorghe Nechifor
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25475

Abstract This paper presents an experimentally study of the anionic iodide separation from a mixture with immobilized liquid membrane. The experiments were carried out in a double jet installation. In order to intensify the transfer of iodide ions from the source phase to the receiving phase, the both phases are dispersed as droplets in the membrane and the hydrodynamic parameters of the dispersed phases are measured with the photographic method. The photos of the droplets were taken with a C...
Autori: Mihaela Emanuela Craciun, Mihaela Mihai, Gheorghe Nechifor
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25476

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

Abstract Changing fuel consumption to a more ecological environmentally alternative is replacing fossil fuels with fuels generated from renewable resources. Ethanol, a renewable fuel, can be produced mainly from crops, lignocellulosic biomass and different other environmental wastes. Although ethanol has been produced mainly from crops, there is a great interest in using cheaper lignocellulosic materials as a feedstock for ethanol production. The aim of this paper is study of dilute acid hyd...
Autori: Ionel Balcu, Adina-Elena Segneanu, Marius Constantin Mirica, Mirela Ioana Iorga, Corina Macarie, Raluca Martagiu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25481

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

Abstract The purpose of this work is to investigate the secondary Al slag (SAS) relating to its technical and environmental properties and, as consequence, to its compatibility with Portland cement matrix. This study may be a contribution to establish of SAS potential valorization as secondary raw material (SRM) in low strength cement matrix composites, as construction products. DRX mineralogical analyses revealed that SAS includes transition alumina compounds, especial boehmite. The hydrati...
Autori: Maria Gheorghe, Nastasia Panait, Romanita Teodorescu, Maria Roman
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25498

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

AbstractThe mechanization technologies of soil works have a major impact on physical state of soil. This situation is generated by the mechanical action of working parts which are involved in soil works and by the traffic of running systems of tractors and agricultural machines.These mechanization technologies have been tested to determine which of them correspond to the highest degree of sustainable agriculture concept and ensure protection, preservation and improvement of agricul...
Autori: Cornelia Muraru-Ionel, Gerard Jitareanu, Ioan Tenu, Petru Cojocariu, Vergil Marian Muraru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25506

AbstractWith a view to make a long term survey of the magnetic fields generated by the power line sources, appliances or, generally, by the low frequency magnetic field sources, a tri-axis magnetic field meter was proposed. Referring to the magnetic field sensor, both the characteristic proportional of the field strength and proportional to the time derivate of the field strength were considered. Thus, two active magnetic field meters working in 40 Hz ? 200 kHz frequency range were designed. In ...
Autori: Alexandru Salceanu, Ionut Nica, Liviu Breniuc, Valeriu David
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25507

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 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 Waste management hierarchy has as priorities waste recycling and energy recovery. Unfortunately, Romania is in the situation so as the waste landfilling is still considered as a suitable solution for waste management. European Union imposed a number of regulations and programs in the field of waste treatment and management that Romania must comply. The paper describes some aspects regarding characterization of the leachate originating from the Tomesti landfill (situated in Iasi County...
Autori: Ana-Maria Schiopu, Brindusa Mihaela Robu, Ion Apostol, Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25523

Abstract A friendly technology with the environment which consists of the elaboration of carbon steels through specific proceedings to powder metallurgy has in view the contribution of methane gas in iron powders at the same time with sintering. This technology is advantageous from various points of view: the final product is a part which does not need afterward processing with solid waste result and therefore the specific energy consume is lower, the wear and corrosion behavior is similar to...
Autori: Olimpia Ghermec, Cristian Ghermec, Traian Popescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25526

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

Abstract Worldwide, tourism is the fastest growing major industry, but not all consequences are positive. This has lead to a growing attention for â€?sustainable tourism’. Compared to international guidelines, the current governance for sustainable tourism in the Netherlands proves to be very weak. Is this just because of stakeholders’ interests and their motivation to protect and conserve, on the one hand, or just encourage growth, on the other? We find some support for this, but also fi...
Autori: Hans Bressers, Valentina Dinica
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25530

Abstract Sorption is one of the several methods that have been successfully utilized for dyes removal. A large number of materials have been used as suitable sorbents for decolourization of industrial effluents: activated carbon (the most common but expensive adsorbent), polymeric resins, various low-cost adsorbents (agricultural and industrial by-products, peat, chitin, silica, bentonite, other clays, fly ash). Our paper is a review about our researches regarding different types of industri...
Autori: Daniela Suteu, Carmen Zaharia, Augustin Muresan, Rodica Muresan, Alina Popescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25532

Abstract 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 aim of the study is to outline new opportunities of improving buildings ambient comfort and thus to determine energy consumption cut down. The second half of the XX century witnessed the development of society disregarding the extent to which environment was affected by the industrial production; pollution was triggered by the widespread industry which made use of technologies whose main target was the increase of production output at any cost, an aggressive industry with respect...
Autori: Vladimir Corobceanu, Răzvan Giuşcă, Raluca Giusca
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25549

Abstract Plasma is often called the fourth state of matter. It is distinct from other lower-energy states of matter, most commonly solid, liquid, and gas, although it is closely related to the gas phase in that it also has no definite form or volume. Plasma technique may use any gas or gas mixture, within equipment limitations. Each gas or mixture of gases produces distinctive plasma, making possible a very diverse range of chemical environments. Besides the recombination mechanisms developed...
Autori: Marian I. Totolin, Ghiocel E. Ioanid, Iordana Neamtu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25550

Abstract Starting from the disadvantages of the polystyrene system – the most important being that they are not biodegradable and their life cycle is relatively small, up to fifteen years – there were conceived several structures for outside walls made of perforated bricks vertically disposed and filled with granular materials. In this manner the thermal resistance is improved knowing that in gaps bigger than twenty millimeters there appear convective streams which substantially decrease ...
Autori: Răzvan Giuşcă, Vladimir Corobceanu, Raluca Giusca
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25551

Abstract The paper examines the effects of high temperature corrosion of the surfaces of heat exchange due to corrosive components formed in the co-combustion of biomass and coal. High temperature corrosion of the surfaces of heat exchange becomes a priority in the combustion of biomass with high chlorine and alkali metals, as alkali chlorides formed deposited on the surfaces of heat transfer, leading to serious consequences for them. Forms of manifestation of corrosion are numerous, the most...
Autori: Ionel Pisa, Corina Rădulescu, Lucian Mihăescu, Gheorghe Lăzăroiu, Gabriel Negreanu, Simona Zamfir, Danut Vairenu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25553

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 The aim of this work was to obtain ceria-based catalysts with improved oxidation properties by adding tin dioxide (5, 10 and 20 wt %) and using the co-precipitation method of preparation. The samples were characterized by BET, ESEM, and DRIFT spectroscopy. The activity of SnO2-CeO2 catalytic systems in CO oxidation was studied between room temperature to 673 K. It was found that the increase of SnO2 content obviously increases the low temperature CO conversion. However, at 673 K all ...
Autori: Tatiana Yuzhakova, , Monica Caldararu, Jozsef Kovacs, Anca Vasile, Georgeta Postole, Cristian Hornoiu, Endre Domokos
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25565

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

Abstract Organic matter is ubiquitous in every type of aquatic system and due to the influence that it has on their ecological health, can be used as a useful water quality indicator. Fluorescence spectroscopy has been efficiently used in the past decades to determine and characterize organic matter, and its link to function and chemical water quality. In this paper, fluorescence fingerprints are presented in order to evidence the anthropogenic influence on different aquatic systems. Using f...
Autori: Elfrida M. Carstea, Luminita Ghervase, Gabriela Pavelescu, Dan Savastru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25576

Abstract In Europe, recovered paper is a valuable raw material for the paper industry already since the early 20th century, actually corresponding to half of the total use of fibres for paper and board production. The aim of this paper is to describe the present status of paper recycling in Europe and thereby to create a data basis for evaluation the results of the FP7 project ?Recovered Paper Sorting by Innovative Technologies ? SORT IT. The overview is based on specific questionnaires addre...
Autori: Dan Gavrilescu, Elena Bobu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25579

Abstract As a result of the global climatic changes generated by the alteration of the environment through polution, the ecosystems' natural ressources are incontrollably distributed, generating unforseeable effects at the level of the subsequent evolution of the natural balance factors. One of the greatest challenges of the science concerned with environment protection, is that of real time monitoring of the biochemical constitution. The real time monitoring of a great number of biochemical ...
Autori: Andrada Pretorian, Bojin Dionezie, Gabriel Epure, Ion Savu, Lucia Mutihac, Mihaela Muresan, Nicoleta Petrea, Petrisor Zamora Iordache, Razvan Petre, Rodica Lungu, Vasile Somoghi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25583

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

Abstract In this work the method for the treatment of industrial waste waters effluents containing hexavalent chromium in three companies during process of treating metal surface with chromic acid is described. Industrial water polluted with hexavalent chromium is collected in separate sewage system. Polluted water is collected in precipitation tanks which are directly connected with neutralization reservoirs. The treatment process includes pre-neutralization by lime-milk, sedimentation, floc...
Autori: Igor Creţescu, Mirjana Cvijovic, Predrag Djurdjevic, Slavica Cvetkovi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25596

Abstract 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 Despite their success, the so-called Italian Industrial Districts (IIDs) have to face the crisis caused by the phenomenon of globalization. The paper presents the interventions carried out in two industrial districts, tannery district of Arzignano and artistic glass district of Murano, in order to help the public administrations to improve the environmental situation. Introducing strategic and social considerations in environmental initiatives and implementing ?radical? environmenta...
Autori: Flaviano D'Amico, Giulio D'Amico, Ion Tanase, Marian Mihai Buleandra, Mihaela Buleandra
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25603

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

Abstract Unlike the P. shermanii and S. cerevisiae cultures, the study on the distribution of oxygen transfer in stirred bioreactor for P. chrysogenum free mycelia broths indicated that this process is controlled mainly by the high apparent viscosity of broths, and less by the presence of fungus biomass. For this reason, the influence of fungus accumulation on the reduction of kla is attenuated compared with that obtained for bacterial or yeasts broths. The lower influence of fungus biomass i...
Autori: Anca-Irina Galaction, Dan Caşcaval, Marius Turnea, Stefanica Camarut
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25606

Abstract This paper applies a fuzzy method for the estimation of the daily electrical energy consumption of the fresh water hydrophore stations of a water distribution system. Based on the uncertainties of the water distribution system, the fuzzy logic was used to simulate a correlation between water and electrical energy quantities. Thus, the proposed method is proven as a useful tool for estimation of the daily electrical energy consumption considering the flow and the pressure growth of th...
Autori: Gheorghe Grigoras, Marcel Istrate
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25607

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

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

Abstract A method based on measuring substrate depletion rate was developed to evaluate the denitrifying activity of activated sludge in suspension and in biofilm form in anoxic serum flasks. The adapted activated sludge inoculum was grown as biofilm in an anoxic rotating biological contactor (RBC). Acetate was used as external carbon source to obtain a carbon to nitrogen ratio (C/N) of 2. The results showed that the specific activity of cells in biofilm form was higher than in planktonic for...
Autori: Elba Vivanco, Juan Carlos Ruiz, Paola Poirrier, Rolando Chamy, Yves Lesty
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25617

Abstract The Schiff base N,N??(salicylidene)-methylenediamine, known as Salmen in combination with Cr(III) forms at pH = 4.5 a greenish precipitate, which is stable at room temperature but decomposed on heating. The study of the Infrared spectra, Electron Spin Resonance (ESR), X-ray diffraction and thermogravimetry has pointed out that the precipitation form is a complex, while the molar ratio showed that the combination rate of Cr(III): N,N?-bis(salicylidene)-methylenediamine is 1:1. The new...
Autori: Doina Sibiescu, Ioan Roşca, Irina Spatarescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25619

Abstract Finding solutions to the waste problems generated by human activity represents a high concern of authorities and environment specialists for many years. Furthermore, energy conservation and reduction of the dependency from fossil fuels represents a top priority of governmental organizations at world level. The developments in alcohol industry have resulted in the increase of wastewaters which are highly polluted with organic substances, causing environmental pollution hazards. A wide...
Autori: Carmen Mateescu, Ionel Constantinescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25626

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 A method based on measuring substrate depletion rate was developed to evaluate the denitrifying activity of activated sludge in suspension and in biofilm form in anoxic serum flasks. The adapted activated sludge inoculum was grown as biofilm in an anoxic rotating biological contactor (RBC). Acetate was used as external carbon source to obtain a carbon to nitrogen ratio (C/N) of 2. The results showed that the specific activity of cells in biofilm form was higher than in planktonic for...
Autori: Manuel Mota, Pilar Teixeira, Rosario Oliveira, Susana Cortez
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25639

? 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

? MUNICIPAL SOLID WASTE LANDFILLING AND TREATMENT OF RESULTING LIQUID EFFLUENTS ? ROMANIA: ENTREPRENEURIAL VALUES AND SUSTAINABILITY ? THE COMPRESSIVE STRENGTH OF WOODEN BRIQUETTES USED AS RENEWABLE FUEL ? ECO-FRIENDLY EXTRACTION AND SEPARATION METHODS OF CAPSAICINES ? ADDRESSING ISSUES OF GEOENVIRONMENTAL RISKS IN DOBRUJA, ROMANIA/BULGARIA ? ADSORPTION OF 2,4-DINITROPHENOL AND 2,6-DINITROPHENOL ONTO ORGANOCLAYS AND INORGANIC-ORGANIC PILLARED CLAYS ? APPLICATION O...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25659

? 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

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

? POST-DARCY FILTRATION THROUGH RIGID PERMEABLE MEDIA ? BIOSORPTION OF Cr(VI) FROM AQUEOUS SOLUTIONS ONTO Hydrilla verticillata WEED: EQUILIBRIUM, KINETICS AND THERMODYNAMIC STUDIES ? IMPACT OF BUILDING A TIDAL GATE ON THE YONGJIANG RIVER IN CHINA ? MONITORING OF THE HYDROTECHNICAL TORRENT CONTROL STRUCTURES: A STATISTICAL APPROACH ? RESEARCH ON SOIL PROPERTIES CONSERVATION DURING THE PREPARATION OF GERMINATION BEDS IN GREENHOUSES ? MANAGEMENT OF THE POTATO CROPS FOR MIN...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25664

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

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

This study was aimed to explore root spatial distributions on the different sizes of belt spaces in the caragana-grass compound system in Siziwangqi county, Inner Mongolia. The root spatial distributions were observed at selected typical sample plots within the 5m, 10m and 16 m belt-space caragana - grass compound systems. The area of roots spatial distributions were highly correlated with the caragana-grass compound system belt space. Root distribution area was found to decrease with soil depth...
Autori: Yongjun De, Huijun An, Qiuju Guo, Dongmei Ye, Liansheng Guohttp://www.ecozone.ro/reviste.php?RID=25681

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

Mass and energy balance calculation is the premise and key of the SCR (Selective Catalyst Reduction) DeNOx system design. However, the traditional calculation method is too complicated. In this paper, the author designed E-R data model for DeNOx system, simulated mass and energy transfer process, and developed visual calculation software based on VCL (visual component library) after studying the principle of SCR and data structure of DeNOx system. Comparing the ammonia demand and flue gas volume...
Autori: Yungui Du, Qirong Wu, Xiu Yang, Yu Yuhttp://www.ecozone.ro/reviste.php?RID=25688

The abundant and inexhaustible solar energy has been widely considered a viable solution to the energy-shortage problem as well as the pollution of the environment. Therefore, it is an urgent need to perform detailed and reliable estimation of available solar resource in order to shift from traditional fossil fuels to the rich solar energy. However, such a scientific action has been often taken simply from the theoretical reserves, with few regards for the specific using scenarios. This paper in...
Autori: Guangxu Liu, Wenxiang Wu, Quansheng Ge, Erfu Dai, Zhiwei Wan, Yang Zhouhttp://www.ecozone.ro/reviste.php?RID=25690

With the enrollment scale of universities expanded because of the large population in China, the Chinese government gradually began to pay attention to green campus’ construction. In order to guide the water conservation construction and operation management for the national universities and colleges, it was proposed the water conservation construction and operation management technology system for green campus. The main contents include perfecting water conservation management systems, popula...
Autori: Hong Xiang Chai, Ying Hua Wei, Hai Yan Xu, Qiang Hehttp://www.ecozone.ro/reviste.php?RID=25705

Abstract:Drying wood requires a significant amount of thermal energy, in order to heat-up wood and evaporate the water inside it.Therefore, solutions to minimize this consumption are a topic of maximum interest for wood-processing industries. Employingsolar power for drying wood is not a novelty, considering that this possibility was already acknowledged at the end of the 17thcentury, but since then, kiln design was significantly improved, once with the progress of knowledge regarding the mechan...
Autori: Ion Marinescu, Mihaela Câmpean
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25727

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

The permanent magnet EDS train has been considered to be one of the most promising urban transportation vehicles due to its particular characteristics: simple configurations, low energy consumption, low noise, and suitable for high speed conditions. In order to study the characteristics of permanent magnet Electrodynamic Suspension (EDS) system, an experimental mechanism was established in this paper. The optimization of Halbach magnet array has been carried out and appropriate track for the EDS...
Autori: Zhiqiang Long, Guang He, Ning He, Zhizhou Zhanghttp://www.ecozone.ro/reviste.php?RID=25713

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

Abstract:In spite of the large use of batteries throughout the years, both in photovoltaic systems and in other uses, there are still nocomprehensive analyses in ageing studies and, when they exist, statistics turn out to be limited. In this sense, this macro-grid is aunique experience, since the experiment is already composed of 1600 identical stand-alone photovoltaic systems and almost 10years of data taking on 10 minute interval for the main magnitudes.In this paper, it is proposed a method f...
Autori: Angeles López Agüera, Daniel Rey Rey, Iago Rodriguez Cabo
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25718

Abstract:In the current work design and mathematical description of thermal performance analysis of solar dryer for agricultural andmarine products is presented. Proposed solar dryer includes two main subunits: 1) Solar PV-Thermal dehydrator (heat transferfluid is air), which is used as heat source for dryer; 2) Drying cabin with multistage trays. The pilot unit of proposed systemdeveloped in Renewable Energy Department of Physics Faculty of University of Santiago de Compostela. Investigations o...
Autori: Angeles López Agüera, Daniel Rey Rey, E. Virites Montes, Iago Rodriguez Cabo, Jasurjon S. Akhatov, Vicente Gándara
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25719

Abstract:Under the circumstances of the total energetic recourses deficit in the Republic of Moldova appears the problem of non-traditionalsources utilization. An important source of renewable energy is the wind energy. This paper deals with two new concepts ofvertical axis wind turbine (VAWT) with helical blades, elaborated by the authors.The main element of the wind turbine is, certainly, the rotor. It is directly subdued to the action of the air flow and transforms thekinetic energy of the ai...
Autori: Ion Bostan, Ion Vişa, Rodion Ciupercă, Valeriu Dulgheru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25722

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:The operation of solar air heat collectors consists in a sequence of transient regimes, being conditioned by the availability in timeof the solar resource. This paper presents the results of an experimental research on transient regimes of two types of solar air heatcollectors. The absorbers of the collectors have different configurations and are made of different materials. One collector is acommercial passage air collector with the absorber made of aluminum. The other collector is an ...
Autori: Adrian Ciocănea, Andrei Dragomirescu, Sanda Budea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25731

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:The article presents a method of monitoring the solar radiation components taking into consideration the isotropic model. Thewireless solar radiation monitoring system developed is innovative and original in comparison with the systems already availableon the market. The use of the wireless device, of the rechargeable batteries, of the sensors used for measuring the solar radiationcomponents and the temperature make this system an autonomous and a portable one. An experimental prototype...
Autori: Cornel Samoila, Daniel T. Cotfas, Doru Ursutiu, Paul Borza, Petru A. Cotfas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25735

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

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

Abstract: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:The drying of biological materials plays an important role in influencing energy savings, quality of end-products and alsoenvironmental issues. Several new approaches in application of solar dryers and a great number of biological materials have beendeveloped. In the paper the background of solar drying, current solar drying arrangements, and some of the recently focusedbiological products such as grain, fruit, vegetable etc. are selected and discussed. Additionally an integrated energy...
Autori: Istvan Farkas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25745

Abstract:The paper aims to present the new pattern of modular agriculture, as evolution of agri-food production in the coming decades aswell as to highlight the direct relation between this pattern and the massive energy support it requires.The paper basically deals with reactions to climate change, reductions of carbon emission, in addition to high quality and safetyrequirements for food production. The author envisages the PAC measures called for in order to ensure a sustainable developmentof ...
Autori: Romulus Gruia
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25746

Abstract:For the optimal working of the concentrating photovoltaic systems (CPV), these are usually tracked, and the accuracy required infollowing the sun path is much higher than in non-concentrating system. The paper focuses on the synthesis of the optimal steptracking program of an azimuth tracking system, used for accurate tracking of a CPV system. The paper presents the synthesismodelling algorithm and the numerical simulations for a CPV system, orientated with an azimuth tracking system, i...
Autori: Ioana Sinziana Hermenean, Ion Visa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25748

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

Abstract:The concept of passive and low energy houses became fashionable in the last years and the European Parliament also initiated aproposal to build only near zero energy houses from 2018. The regulations already in force aim at low energy consumption (mostlikely influenced by the wide spreading of the �Passivhaus� concept in Europe) and by 2018 harmonized regulations andstandards will require the near zero energy building. According to the concept of the Energy Performance of Building D...
Autori: András Zöld, Tünde Kalmár
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25751

Abstract:Hybrid nanocomposites may synergistically combine and enhance the properties of inorganic nanoparticles and organicmolecules.The objective of this paper is to examine particular nanocomposites films based on binary copolymers and inorganic TiO2nanoparticles from the structure and properties point of view. These nanoparticles were dispersed in maleic anhydride-styrene(MAS) copolymer by using elaidic acid, trans isomer of the oleic acid, as coupling agent in order to increase the compatib...
Autori: Alina Matei, Dana Perniu, Ileana Cernica, Irina Popescu, Lucia Dumitrescu, Vasilica Schiopu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25755

Abstract:Energy mix used in "Solar House" is currently composed of about 50% renewable energy sources (geothermal energy) and 50%conventional sources of energy (mainly electricity from national grid and less than 10% natural gas). The geothermal energy isextracted by the mean of a ground coupled heat pump which assures the heating load of the "Solar House" and the preparation ofdomestic hot water. The peak load in heating period is covered by a natural gas boiler and the electricity to drive the...
Autori: Bogdan Burduhos, Ion Vişa, Macedon Moldovan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25756

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

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

Abstract: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: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:This paper illustrates a detailed analysis of specific problems and limitations of a WSN designed for an environmental protection/wildlife tracking application. Since the main challenge in designing the network is energy minimization for activities that does not concern detection itself, we will concentrate on methods (and results) to achieve that. For data transmissions, physical and MAC layers were defined in ZigBee (IEEE 802.15.4) and WiFi (IEEE 802.11b) standards....
Autori: Alexandru Frujină, Alina-Mihaela Bădescu, Octavian Fratu, Simona Halunga
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25796

Abstract:The paper describes some studies on the influence of water flow rates through water-supply networks on drinking water quality. Water residence time in pipelines for more than seven days in buried pipes and two days in above-ground pipes promotes the development of biochemical systems when the flow rates are low and very low having detrimental consequences on drinking water quality. These shortcomings are due to the residual chlorine decrease below the allowed technical limits (0.5 m/s) ...
Autori: Adrian Carabeţ, Alina Gîrbaciu, Constantin Florescu, Cristian Stăniloiu, Ion Mirel, Irina Olaru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25799

Abstract:The aim of the present study is the optimization of biosorption conditions using a metal tolerant actinomycete (strain 723) for the removal of lead ions from waste water in batch and dynamic flow mode. The optimum conditions for lead biosorption by the strain were determined as initial pH 3.0, biomass amount 2.0 g L-1, and initial metal concentration 400 mg L-1 in the batch condition. The maximum lead biosorption performance was obtained with a 19 mm diameter column, a 1 mL min-1 flow r...
Autori: Ayşe Betül Karaduman, Maria Julia Amoroso, Mustafa Yamaç, Sergio Antonio Cuozzo, Zerrin Pat
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25811

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 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

Freshwater is a fundamental natural resource. It is essential for sustaining life, supports the development of ecosystems and economies and is also used as a recreational resource. Therefore, its appropriate management is critical if we want to guarantee the long-term sustainability of the supply. The aim of this paper is to analyze the main aspects influencing water saving in Spanish households. To accomplish this goal, we start by developing a theoretical analysis of those aspects that affect ...
Autori: Juan Carlos Gázquez-Abad, Juan-Antonio Mondejar-Jimenez, Manuel Vargas-Vargas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25824

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

� 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 removal of Cr (VI) from aqueous solutions by sphagnum peat moss was investigated in batch experiments as a function of solution pH and initial Cr (VI) concentration. The highest removal percentage (R=99%) was obtained at pH = 1, in solutions of 20.8 mg Cr (VI)/L. In order to establish the mechanism of the removal process, Cr (VI) and total Cr (Cr (VI) + Cr (III)) in residual solutions was analyzed. The Cr (VI) removal by the peat moss at low pH is governed by two processes – electrostatic ...
Autori: Catalin Balan, Doina Bilba, Irina Volf, Matei Macoveanu, Petru Bulai
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25849

This paper presents the physicochemical and rheological properties of some complex coagulants derived from the weak and medium anionic polymers and medium cationic surfactant in order to evaluate the opportunity to use them in destabilizing and removing the colloidal systems from water and wastewater. In this respect, weak anionic and medium anionic copolymers of acrylamide and sodium acrylate with commercial names of Preastol 2515 and Preastol 2540, and a medium cationic surfactant derived from...
Autori: Constantin Bobirică, Gabriel Dabija, Liliana Bobirica, Mihaela Mihai
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25850

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

This paper presents original studies about the influence of mineral and/or organic fertilization on the minerals contents (P, Na, K, Ca, Mg, Fe, Mn, Zn, Cu, Ni and Pb) in leguminous plants from permanent grassland situated in a hill area of Banat County. Determination of minerals in grassland is very important both for the nutritional or toxic effects of these elements and their compounds, in the plants, animals and environment. Phosphorous was analyzed colorimetric and all the others metals hav...
Autori: Alexandru Moisuc, Iosif Gergen, Monica Harmanescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25858

Infrasound is a sound wave with a range of frequencies below that of human hearing and is a constituent of the environment in which we live. Taking into consideration that infrasound is below the audible range and that its overall effects on the entire human organism are yet unknown, the ambiguity of the phenomenon requires further research. Although infrasound has been analyzed in depth in the past few decades and assumptions have been made regarding experiments on human subjects (with or witho...
Autori: Carmen Cătălina Ioan, Cornelia Ursu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25859

This paper is part of LCA studies performed in the frame of FP7 project �Recovered Paper Sorting by Innovative Technologies - SORT IT�. It analysis the results obtained by Life Cycle Impact Assessment (LCIA) of the reference case for recycled packaging paper manufacturing (current sorting technology), which will constitute a comparison base for new sorting technology developed in SORT IT project. The main stages considered in the life cycle were: recovered paper (RP) transport from collectio...
Autori: Alina Iosip, Antonio Dobon, Elena Bobu, Mercedes Hortal
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25860

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

The synthesis of vanadium oxide systems (with 5 and 20 wt% V2O5 loadings) supported on commercial γ-alumina was carried out by a wet impregnation method. The samples were characterized by low-temperature nitrogen adsorption (BET), inductively coupled plasma (ICP) method and by in situ electrical conductance/capacitance measurements. The adsorption of CO was used to investigate the acidic properties of alumina support and V2O5/-Al2O3 catalysts by FTIR spectroscopy. The catalytic acti...
Autori: , Cristian Hornoiu, Mariana Scurtu, Monica Caldararu, Niculae I. Ionescu, Tatiana Yuzhakova, Veronica Bratan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25869

This paper presents an experimental study on the energy requirement for greenhouse heating. The evaluation of necessary energy for crop plants was made by systematic measurements of the thermal behavior for three non heated tunnel greenhouses, covered with polyethylene. From the comparative analysis of the measured temperatures inside and outside the tunnel, it was established the relationship for estimating the inside greenhouse average temperature (tmi), lower than the minimum temperature nece...
Autori: Maria Harja, Roxana Dana Bucur
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25879

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

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

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

Global existence of a large percentage of lakes with eutrophication problems (54% in Romania) demands a predictive tool for the quality of these ecosystems. In this context, this paper proposes an eutrophication model that describes the thermal and biochemical behaviour of an eutrophic reservoir. This model was used to study an artificial lake (Goleşti reservoir) located in Romania. The conceptual model concerns a lake, which is considered as a closed aquatic system, and analyze a simply fo...
Autori: Gabriela Elena Dumitran, Iulia Rodica Damian, Liana Ioana Vuta
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25890

The nitrogen and phosphorus management in agricultural systems leads to an increased input of plant nutrients and sustains the soil fertility. Microbes contribute through different mechanisms to nutrient cycles, transforming it available for plants. Isolation of 18 Azospirillum and 18 Azotobacter bacterial isolates was effectuated from the rizosphere and interior roots of the following plants: Carex fusca All., Carex rostrata Stokes., Eriogonum latifolium Sm., Carex elata All., and from Equisetu...
Autori: Csaba Dezso Andras, Eva Gyorgy, Eva Laslo, Gyongyver Mara, Rozalia Veronika Salamon, Sarolta Szentes, Szabolcs Lanyi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25894

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

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

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

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

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

“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

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

AbstractThe transport of gases and solvents in polymeric membranes is an important phenomenon with many technical applications, suchas the mixture separation using polymeric membranes, the polymeric membrane preparation, the polymer devolatilization and theselection of appropriate polymeric membranes for a certain process. In most membrane separation operations and manufacturing,equilibrium and diffusion data are required.Useful information on equilibrium and diffusion can be obtained from the s...
Autori: Ciprian Constantin Negoescu, Eugenia Teodora Iacob Tudose, Ioan Mămăligă, Nicoleta Bunduc
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25975

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

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

AbstractMethane landfill emissions are a general concern and should be estimated for taking the proper measures for global warmingmitigation. The European legislation is supporting all techniques that avoid, reduce or treat CH4 emissions. One of the maindirections is reducing the quantities of biodegradable waste disposed in landfills. The efforts for GHG emissions reduction andalso compliance with European legislation in the field of waste management does not mean only putting in place some sta...
Autori: Liliana Bobirica, Rodica Stanescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25984

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

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

AbstractWorldwide efforts are made to conserve biodiversity, to avoid degradation of ecosystems and not least to restore ecologicalstreams. Ecological restoration is a field which assume multidisciplinary and multisectoral involvements. In the last yearsecological restoration has emerged as an important component of ecosystem management and environmental protection. Manyprojects were planned and implemented to maintain and improve the ecological integrity of streams, by restoring naturalecosyste...
Autori: Cristina Ghinea, Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25989

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

AbstractThe electrostatic discharge (ESD) event is a severe source of interference that can produce damages in any electronic system. Afull-body of an ESD generator is modeled using the Cadence IC 5.3 package software in order to reproduce the referencedischarge current assured by the standard specifications. The factors that introduce electromagnetic radiations into the systemshave also been investigated. Several tests based on proper matches between the parameters of the antenna were computed ...
Autori: Alexandru Salceanu, Ana-Maria Nicuta, Oana Beniuga, Paul Bicleanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25993

AbstractThis paper analyses mathematical models and numerical simulation results for a notional miniature, planar, spiral transformer(MPST) fabricated in MEMS technology, for galvanic separation, proposed to equip an electric harvesting device (EHD). Twotypes of core – ferrite and (partially) magnetic nanofluid – are considered. We found that magnetization body forces occur in thesuper-paramagnetic nanofluid core and they result in complex, steady state flows consisting of fully 3D recirculation...
Autori: Alexandru Mihail Morega, Jean Bogdan Dumitru, Lucian Pîslaru-Dănescu, Mihaela Morega
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25998

AbstractElectrocardiogram (ECG) signal processing systems must consider various levels of noise/artifacts and develop the techniquesto deal with wide range of noise situations. The authors develop a method based two functions (Wigner and Wavelet),highlighting the importance of selecting one of these functions for signal processing in real-time or off-line case. Making use ofvirtual instrumentation, it was showed that Wigner function can be appropriate for real time monitoring and for mobile devi...
Autori: Marius Branzila, Valeriu David
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26003

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

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

AbstractIn the last years many papers have reported about the occurrence of the pharmaceuticals in the surface waters and theirundesirable effects upon the aquatic life. Most of pharmaceuticals pass through the wastewater treatment plants unchangedbecause they are biorefractory compounds and as a result they enter the water bodies. Therefore, it is necessary to improve thebiodegradability of pharmaceuticals effluents (PhEs) before their discharge in the sewerage systems. The aim of this paper wa...
Autori: Carmen Lazău, Florica Manea, Monica Ihos
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26021

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

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

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

AbstractPrinted circuit boards-PCBs are particularly rich in copper and precious metals. Recoveries of metals in our work started withtests for electrodeposition of Au, Ag and Cu from synthetic solutions on graphite and copper electrodes. Processes were studiedusing cyclic voltammetry in ranges: (-1200)-500 mV and (-800)-(-200) mV and (-400)-1400 mV. Different supportingelectrolytes like: H2SO4 0.5M, HCl 0.1M and HNO3 0.1M were used. Electrodeposition of studied metals from real solutions wasfol...
Autori: Adina Căta, Cristian Tănasie, Daniel Boc, Firuţa Fiţigau, Mariana Nela Stefănuţ, Paula Sfîrloagă, Raluca Pop, Zoltan Űrmösi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26036

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

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

AbstractThe geodetic, photogrammetric and topographic works necessary for the introduction of cadastre were performed in the city ofIasi in a series of various coordinate systems depending of the cartographic projections used in different periods of time. In a firstphase (1951-1973) the creation and the organization of topographical plans relied on the coordinate system of the LocalStereographic Projection - Iasi with the central point at Golia and the Gauss - Krüger Conformal Transverse Cylindr...
Autori: Adrian Popia, Ersilia Oniga, Valeriu Moca
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26060

AbstractAdjusting the operating parameters of pumping stations equipped with fixed speed pumps is achieved by manipulating the valvesfrom the pumps’ discharge. In order to meet the requirements of the distribution networks, the pumps are being strangled atstartup and they remain so throughout the entire period of operation. This paper presents a method developed to estimate theenergy costs in a pumping station operation, based on an analysis using the data recorded in the register of the station...
Autori: Liviu Valer Hasegan, Sorin Perju
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26063

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

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

AbstractWith the development of transportation systems, the associated traffic noise problem has drawn more and more attention in HongKong. Under the Hong Kong Planning Standards and Guidelines, a standard of 70 dB(A), measured as LA10 (1 hour), has been setfor road traffic noise. The Calculation of Road Traffic Noise (CRTN) method has been adopted in Hong Kong to estimate suchnoise. This study first examined and evaluated the accuracy of this method in predicting traffic noise at different floo...
Autori: Cheuk Ming Mak
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26082

AbstractThe performance of four low cost Iraqi clays, bentonite (BT), kaolinite (KT), attapalgite (AT) and flint (FT) to remove lead ionsfrom aqueous solutions by adsorption was investigated. Batch experiments were carried out at pre determined equilibration time,adsorbent dosage, solution pH, particle sizes, ionic strength, initial lead ions concentration and temperature. Adsorption of Pb2+ions was strongly affected by pH and best adsorption is achieved at pH 4.5. The systems were investigated ...
Autori: Najwa I. Abdulla
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26086

AbstractIn road traffic noise issues, experimental measurements are a relevant element in order to understand the problem and to adjustmodels. Sometimes, when measurements are not possible or in the designing phase, prediction models are used to perform anestimation of the equivalent level produced by a road infrastructure. Usually models parameters are obtained by a statistical datafit and thus they are related to the area where measurements have been performed. These models are suitable for st...
Autori: Gerardo Iannone
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26087

AbstractThe ozone oxidation and disinfection stages constitute important technological phases in the modern systems of water treatment,both as unitary stages as integrated ones into systems that use advanced oxidation processes (AOP). More than half of thewater/ozone contact systems used nowadays in the water treatment plants are based on systems of contact in the bubble column.This work here aims at experimentally analysing, in terms of scale, a water-ozone contact system in the bubble column a...
Autori: Sorin Claudiu Ulinici
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26088

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

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

Abstract In order to link the question of renewable energy to regional development and territorial cohesion, the article aims to present and evaluate recent initiatives taking place in the North-West Development Region of Romania, with emphasis on emerging renewable energy clusters. Moreover, we will present a case-study on geothermal energy cluster in Northern Transylvania. The state-of-art analysis is a result of a previous FP7 project, while the action plan has been derived from...
Autori: József Benedek
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26107

Abstract The Black Sea is seriously affected by a large range of pollutants, despite severe laws regarding the protection of sea ecosystems. Heavy metals are among the most important xenobiotics from the environment, presenting also toxicity for humans. The studies upon heavy metals have proven that the sediments have the highest concentrations and they can release metals back to water and this fact represents a risk for the humans and aquatic ecosystem life. The use of aquatic ...
Autori: Oana Jitar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26112

Abstract Using lab experiments, the heavy metal tolerance of young ectomycorrhizal trees was assessed in two axenic systems, co-cultures on germination medium and a sandwich technique system with Modified Melin-Nokrans medium. Sterilized seeds of the tree species Scots pine (Pinus sylvestris) and Norway spruce (Picea abies) were inoculated with the ectomycorrhizal fungi Paxillus involutus and/or Tricholoma vaccinum in media containing either 10 mM CsCl or 0.25 mM CdCl2. The behavio...
Autori: Maria Lucia Bizo
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26119

Abstract Nowadays, all over the world, the car transport sector is one of the main factors responsible for the Greenhouse Gas Emissions. The current systems of emission taxation do not take into consideration the distance travelled by cars; therefore, they are not fully compliant with the “polluter pays” principle. In addition to the produced inequality, these systems do not encourage the reduction of the distances travelled annually (with possible favorable effects on pollution an...
Autori: Cristian-Mihai Dragos
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26120

Abstract This paper presents a research method for the exploratory analysis of non-compliant municipal waste landfills by determining the gas composition of emissions. The proposed method has the following stages: establishing municipal landfill surface contour by topographic measurements; setting measuring points on the deposit surface; setting the number of points needed and their spatial coordinate; field location of points for making exploratory measurements; making and recordi...
Autori: Michaela Bianca Vac Soporan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26127

Abstract This paper presents a proposal for measurements and interpretation of gaseous emissions from the municipal landfills, especially for non-compliant sites. Based on the measurements made on the Pata Rat landfill, Cluj-Napoca, a methodology for interpreting the results is presented, in order to assess current energy potential of the deposit. Measurements are the main basis for determining the energy potential of the deposit. By applying the methodology for determining the ene...
Autori: Michaela Bianca Vac Soporan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26128

Abstract Being constantly surrounded by sound, in most cases we operate ignoring this “environmental noise”, but when the noise intensity increases, it becomes a pollutant, adversely affecting the level of professional performance, leading to fatigue, causing nervousness or decreasing the quantitative and/or qualitative level of performance. The main objective of this paper is to evaluate the noise problem in the Strand district of Sibiu and to highlight the negative effects affect...
Autori: Valentin Petrescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26131

Abstract One of the causes of climate change is the accumulation of greenhouse gases (GHGs). Methane (CH4) is one of the greenhouse gases, with an ability to trap heat in Earth's atmosphere 21 times greater than carbon dioxide (CO2) per unit mass and in the same period of time. Because the lifetime of methane in the atmosphere is relatively short, it could be kept under control. Wastewater treatment plants (WWTPs) are anthropogenic sources of CH4 emissions. Anaerobic digestion of t...
Autori: Doru Lucian Manea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26139

Abstract Using sludge with dangerous substances content as an agricultural fertilizer can provide risks for humans and all environmental components. An important risk factor that had to be taken into account is the combination of sludge used as a fertilizer and agriculture activities that has its own consequences. In this paper, a risk evaluation for sludge disposal was elaborated. The most important risk factors in the studied case, wastewater sludge used as an agricultural fer...
Autori: Elena Manea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26141

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

Abstract 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 Volcanic hazard is ignored in natural hazard studies in Romania because no active volcano is known on its territory. However, the 2010 eruption of Eyjafjallajökull volcano in Iceland and its consequences on air traffic safety across Europe and the whole northern hemisphere dramatically demonstrated that volcanic hazard in a certain area, such as a country, is not necessarily related to the presence of active volcanoes in the same territory. Therefore, target-focused approa...
Autori: Alexandru Szakács
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26146

Abstract Biogas can be used as a renewable and green energy source by upgrading to natural gas. Water scrubbing, which is one of the most widely-applied upgrading technologies, involves an accurate knowledge of the solubility of the main biogas components in water, which is essential to the design and optimization of the biogas upgrading process. In this work, we use several thermodynamic models available in the Aspen Plus software modeling environment to calculate the solubilit...
Autori: Petronela Cozma
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26148

Abstract The biosorption of Pb(II) and Cd(II) ions from aqueous solution on marine green algae biomass (Ulva lactuca sp.) was studied in batch systems, at initial solution pH of 5.0 and biomass dose of 8.0 g/L, considered as optimum experimental conditions. The obtained results from experiments of a single-component biosorption were analyzed using Langmuir, Freundlich and Dubinin- Radushkevich isotherm models. The Langmuir equation describe the biosorption isotherm of Pb(II) and Cd...
Autori: Laura Bulgariu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26152

The special topic “PROGRESS IN ENERGY AND ENVIRONMENTAL SUSTAINABILITY FOR GREEN DEVELOPMENT OF URBAN ANDRURAL AREAS” focus on the important issues of energy resources and anthropogenic pollution of the environment in modern agriculture and industrial manufacture, and proposes some ideas and methods for green progress in sustainability of energy andenvironment....
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26154

AbstractThe objective of this study is to evaluate the urbanized ecological environment quality with land use classification system(artificial ecological subsystem, water ecological subsystem and continental ecological subsystem). Three land use type ecosystem combined with characteristics of urban ecological environment conditions (space pattern, environment characteristics, biological characteristics, ecosystem service) established the urban ecological environment quality synthetic evaluation ...
Autori: Zhang Chen
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26160

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

AbstractAccommodation profoundly affects energy use and carbon dioxide emissions in the tourism sector. This paper focuses on starratedhotels in China, and applies a bottom-up approach to estimate the amount of carbon dioxide emissions from tourismaccommodation in 1998–2009. The results show that carbon dioxide emission of star-rated hotels increased from 4.37 million tonin 1998 to 16.82 million ton in 2009 (an increase of 3.84 times). Although the amount of carbon emissions is increasing, the r...
Autori: Zi Tang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26185

AbstractEco-innovation is defined as any form of innovation aiming at significant and demonstrable progress towards the goal ofsustainable development, through reducing impacts on the environment or achieving a more efficient and responsible use ofnatural resources, including energy. The chemical industry is usually considered one of the most polluting industries. Ensuringsafe production, transport and handling of its products, with care for the environment and in full accordance with regulation...
Autori: Ángela González-Moreno
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26196

AbstractConsidering the advantages of steel surface hardening, when less expensive low- and medium- carbon steels can be surfacehardened without the problems of distortion and cracking associated with the through hardening of thick sections, we developedsome research entailing the increase in environmental performance of iron powders carburizing process using methane as carrier.Apart of studies on optimal working parameters and methods, our research addresses improvements in environmentalperform...
Autori: Olimpia Ghermec
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26198

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

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

AbstractKohonen Self-organizing map (KSOM) modeling have been applied increasingly for analysis, estimation and prediction ofseveral water quality processes, which are embedded with high complexity, dynamism and non-linearity. KSOM or unsupervisedneural networks were applied to microbial data (Escherichia coli, faecal streptococci, and total coliforms) from the effluent of atwo year data set (2008-2010) on two permeable (pervious) pavement systems used to treat storm water runoff contaminated wi...
Autori: Kiran Tota-Maharaj
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26226

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

AbstractWorld will face a major fresh water crisis in the coming decades due to high contaminants in surface and subsurface water.Groundwater is ultimate and most suitable fresh water resource for human consumption in both urban as well as rural areas. Thegroundwater quality reflects the information about the natural and anthropogenic source of pollution. This study aims todetermine the water quality status of the area and to deduce its relation to seasonal variations in land use/land cover (LUL...
Autori: Prashant K. Srivastava
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26233

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

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

AbstractThe inactivation of Escherichia coli was investigated with two types of underwater electrical discharge systems such as pulsedelectrical discharge (PED) and dielectric barrier discharge (DBD). The DBD system consisted of a quartz tube and a coaxialdischarging electrode, which was submerged in biologically contaminated water. In the underwater PED system, the electricaldischarge starting from the tip of submerged tubular discharging electrode propagated downward and the direction of worki...
Autori: Sang Don Kim
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26263

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

AbstractWaste Electrical and Electronic Equipment (WEEE) is increasing day by day more than the amount of municipal wastes in thedeveloping world. According to researches of Ministry of Environment and Urbanism in Turkey, to meet growing waste demandin all regions, 850 collection points for the district municipalities and 15 large collection centres are needed. From this point ofview, in this study, the site selection of the plants used for planning and recycling of electrical and electronic equ...
Autori: Müfide Banar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26268

AbstractIn this work, fruit shell of Cocos nucifera (FSCN) treated with H3PO4 has been tested as a low cost adsorbent for the removal of methylene blue (MB) from aqueous solution in batch and column process. The adsorption of MB onto FSCN was affected by the initial solution pH, dye concentration, temperature, column internal diameter and adsorbent dose. The adsorption equilibrium data was fitted well to the Langmuir model and the maximum adsorption capacity was found to be 20.74 mg/g at 40şC. K...
Autori: Pijush Kanti Mondal, Rais Ahmad, Rajeev Kumar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26274

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

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

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

AbstractChina’s natural wetlands occupy 3.77% of the land and provide 54.9% of China’s ecosystem services. Healthy natural wetland ecosystems play an important role in the sustainable development of China, which was realized by the Chinese government in the early 1970s. In the past 5 years, China has made great efforts in wetlands conservation, which is signified by the funding of billions of dollars to restore degraded wetlands, the policy to return reclaimed croplands to wetlands, the specific...
Autori: Hongli Song, Huanhuan Jiang, Linus Zhang, Wanlong Sun, Wenguang Sun, Xiaojie Mou, Zhigao Sun
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26291

AbstractThis study focus on the possibility of removing the basic textile dye Astrazon Blue FGGL 300% 03, from an aqueous solution, using Esmegel clay as adsorbent. The characterization of the adsorbent included the distribution of particle size, physical textural properties, chemical composition and determination of the point of zero charge. The equilibrium isotherms were determined at 20 and 30 °C, pH at 6.0 and 7.5 and adjusted to the Langmuir and Freundlich models, having the latter led to b...
Autori: Chia-Yau Cheng, Paula M.S.S. Luís, Rui A. R. Boaventura
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26292

AbstractOne of the key issues in building construction is environmental sustainability. Conventional methods of construction do not consider the in-built capacity to adapt over time according to new technical requirements and environmental consequences. Therefore, any change or renovation of the building will result in significant cost and lost use during its lifecycle. Designing flexible buildings for easy change and adaptation will assist the main concept of sustainability by reducing material...
Autori: M. Fauzi M. Zain, Maslina Jamil, Nasibeh Sadafi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26293

AbstractThe road infrastructure has a major environmental impact by covering important land surfaces and consuming enormous amounts of raw materials for construction and maintenance. The impact of transport pavements needs to be considered from the design stage and to be examined during the whole life cycle of the infrastructure: raw materials extraction and initial transformation, manufacturing, placement on site, exploitation, maintenance, and demolition. This paper evaluates the impact of asp...
Autori: Isabela Maria Simion, Laura Dumitrescu, Maria Gavrilescu, , Radu Andrei, Sebastian George Maxineasa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26297

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

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

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 changes caused by windthrows regarding spruce stand lead to significant environmental modifications. In this article aspectsregarding the detection of environmental changes caused by windthrows in Sanmartin Forest Division within Miercurea CiucForest District of National Forest Administration are covered using Landsat 7 ETM+ satellite images. Two pre and post-eventsatellite images, from 2001 when massive windthrows occurred, were used in this study. The techniques used in changesdete...
Autori: Iosif Vorovencii
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26311

AbstractThe main aim of this study is to evaluate the residents public awareness from water-polluted areas in Tehran city, in terms ofwater quality (in particular nitrate pollution), and to measure their different performance and approaches to this environmentalproblem. For this purpose, district 18 (Yaft Abad, southwest of Tehran) was selected as a case study. A questionnaire wasprepared and distributed randomly among residents of the selected area in May 2011. The data were analyzed statistica...
Autori: Mohammad Mahdi Azadegan, , Reza Maknoon
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26314

AbstractThe removal and determination of toxic heavy metal ions in aqueous solutions has been given much more attention over the pastfew years. In this paper, a removal and separation/preconcentration method for cadmium species on Poly S15-g-EMA100 (a kind ofpolystyrene-graft-ethyl methacrylate copolymer) in water samples was developed. Some experimental parameters, such assolution pH, sample flow rate, type and concentration of eluent, amount of adsorbent and effect of common matrix ions werein...
Autori: Harun Ciftci
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26317

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

AbstractThis article aims to investigate the Italian initiatives related to legislative simplifications as incentives for the dissemination ofEMSs. An increasingly complex and varied environmental legislation entails many efforts by organisations such as SMEs that donot always have sufficient human and financial resources to meet all the obligations applicable to them.The goal of this article is therefore to analyse the main simplifications, describing their approach, operational modalities and ...
Autori: Fabio Iraldo, Francesco Testa, Marco Frey, Tiberio Daddi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26323

AbstractThis research introduces a new Robust Interval Type-2 Fuzzy Set Linear Programming (R-IT2FSLP) model to manage irrigationwater resources. This method improves upon previous interval fuzzy bound models by allowing uncertainties presented asmultiple fuzzy boundaries. It creates additional degrees of freedom and enable direct modeling of uncertainties within anoptimization framework. It more explicitly reflects the system’s uncertainties under the fuzzy membership function. The more ofR-IT2...
Autori: Guohe Huang, Lei Jin
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26324

AbstractCosmetics, toiletry and household cleaning products are often based on different types of polymeric gels with specific rheologicalbehavior. Dynamic shear oscillation measurements were used for the monitoring of in situ polymerization process, and todetermine the viscoelastic properties of the hydrogels based on polyacrylamide and acetone-formaldehyde resin. Both storagemodulus G’ and loss modulus G” were measured in real time during the gelation process carried out directly between the p...
Autori: Andrei Rosu, Camelia Mihăilescu, Constanţa Ibănescu, Gabriela Halitchi, Maria Lungu, Maricel Danu, Simona Bistriceanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26326

AbstractLead (II) can bind with papain at its active site, destroying the enzymatic activity. Papain a sulfhydryl protease has beenimmobilized in calcium alginate bead for the purpose of removal of lead (II) from industrial waste water. Effect of lead (II) onthe enzyme activity of immobilized papain, has been observed. A detailed kinetic study has been carried out and the data arefitted to different kinetic models. EDS (Energy Dispersive X-Ray Spectrometry) and desorption study suggest that meta...
Autori: Aparupa Bhattacharyya, Parameswar De, Soumasree Chatterjee, Srabanti Basu, Susmita Dutta
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26338

AbstractPredicting the precipitation evolution is of big importance, especially for the regions affected by drought, where the irrigationsystems are necessary. Dobrudja is a region situated in the South – East of Romania, where the drought period is about 6 monthper year. Therefore, finding a model for the precipitation trend is the first step on understanding the weather evolution and itsprediction. In order to evaluate the precipitation variability in Dobrudja the annual and monthly precipitat...
Autori: Alina Bărbulescu, Judicael Deguenon
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26341

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

AbstractThis study was conducted to generate a hierarchical modelling based on ecological land classification in the Yukarıgokdere forestdistrict of the Mediterranean region, Turkey. Two ways indicator species analysis was applied to obtain response variables fromthe relevant vegetation matrix at each level. Response variables were modelled by using classification tree technique at eachlevel. Validation tests (i.e. multi-response permutation procedures for determination of differences of pl...
Autori: Kürşad Özkan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26352

AbstractFactors influencing the distribution of Origanum onites L., (locally known as Turkish oregano) were analyzed on the LakesDistrict of Turkey, using Two-tailed Wilcoxon’s runk sum statistics and Pearson chi-square χ2 test contained in the SPSS 17.0package. An inter-specific correlation analysis (ICA) was also applied to determine indicator plant species of O. onites. Analysesperformed on environmental factors showed that there is a relatively high correlation between the occurance of ...
Autori: Mehmet Güvenç Negiz, Serkan Gülsoy
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26354

AbstractAmmonia pollution occurs frequently in urban water networks, which threatens the safety of water supply systems. Zeolite can beused for the removal of ammonium in the pretreatment of raw water for its peculiar adsorptive property to ammonium, but a largeamount of sludge from this measure could be a significant pollution source. In this work, the dewatering performance ofprecipitated sludge from the pretreatment of micro-polluted raw water was studied. Batch experiments of the simulatedco...
Autori: Bairong Zhu, Hao Chen, Huaizheng Li, Zhenliang Liao
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26355

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

AbstractWireless sensor network (WSN) has been widely used in national defense, military and security, environmental monitoring andmany other fields. It’s of great significance to design WSN which consumes little energy but supports service quality flexibly andeffectively. To further improve the performance of WSN, this article, focusing on aspects of low energy consumption and longlife cycle of the WSN and taking energy limits and coverage requirements in WSN into account, attributes the covera...
Autori: Wenjuan Cheng, Yiming Tian, Yourui Huang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26359

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

AbstractWith the rapid development of China’s economy, the demand for resources and energy increases. Under the situation of limitedresources and sustainable development, the environmental accounting in China is emerged. The paper reviews and evaluates thedevelopment of China’s environmental accounting theory, and also point out the shortcomings and future development trend. Theresearcher analyzes the current implementation status of the environmental accounting in China, find out the existing p...
Autori: Hong Huang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26365

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

AbstractA township consists of diversified communities, and communities are the basic units of local infrastructure. The public buildings,public lighting equipment, private buildings, and community residents are the normal-state energy consuming aggregates. Ascommunity organizations have great influences, the promotion of community energy-saving policy under the organizationalinfluence, along with the concepts of direction, evaluation, and subsidy, can help to realize the community energy-saving...
Autori: Sung-Lin Hsueh
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26374

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

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

AbstractCatalytic wet oxidation (CWO) of phenol was studied in the present work. The effect of liquid hourly space velocity (LHSV),superficial gas velocity, reactor pressure, temperature and initial phenol concentration on phenols removal was investigated.Results showed that phenol conversion increased with increasing reaction temperature, reactor pressure, and superficial gasvelocity of oxygen, yet it decreased with increasing (LHSV). The results exhibited that the highest phenol conversion of(...
Autori: Farah T. Jasim, Luma S. Ahmed, Mohammad F. Abid
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26381

AbstractAccording to the study results, the level of soil pollution with heavy metals in the northern part of Kryvyy Rih iron ore basin(Kryvyy Rih district, Ukraine) reach to “moderately threating”. In the southern part of Kryvyy Rih basin (Shyroke district,Ukraine) the level of soil pollution was between two assessments: “moderately threating” and “permissible”. The results of thestudy on buffer capacity of usual black soils show that the tested elements can be arranged in the following descend...
Autori: Mykola Kharytonov
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26389

AbstractThirty two per cent of all injury risks identified at work are risks arising from work equipment. In this sense, the use of protectiveequipment, respectively earthing devices during interventions / works in electrical installations are the main protective measureagainst these risks. Short-circuit current calculation is necessary to determine the stress on both switching devices and protectionequipment in substations, and for choosing protective equipment for workers. This paper aims to m...
Autori: Constantin Beiu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26393

AbstractMost of the European countries have implemented large renewable energy systems that use wind energy, solar energy and waterenergy. In our country only water energy was used for many years. In the last period there is an obvious orientation towards theuse of all types of renewable energy systems, which are both efficient and environmental friendly. The objective of our paper isto design an instrument for the evaluation of the best suited renewable energy system for different areas and typ...
Autori: Monica Leba
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26395

AbstractThe success of rescue in toxic, flammable and explosive environments can accurately be quantified by the number of injuredcaught at the event that occurs, identified, reanimated and transported safely to the nearest hospital or point of granting the firstaid. Unfortunately, in most cases, the area where these activities are developed, research is more or less accessible due to thepresence of smoke, toxic or explosive gases or lack of visibility. For this reason, most often we are witness...
Autori: Artur Găman
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26403

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

AbstractIn industrial plants many types of combustible dusts are generated, processed, handled and stored. When ignited, they can burnrapidly and with a considerable explosion force, when mixed with air in proper proportions. This is the reason why adequateprecautions have to be adopted, to ensure all equipment is appropriately protected so that the ignition likelihood of the explosiveatmosphere is diminished.Explosion preventing and protection precautions aim to stop explosion occurrence, by el...
Autori: Adrian Jurca
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26406

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

AbstractThe industrial development, the demographic growth and the limitation of the natural regions have determined a continuousdegradation of the water quality due to high concentrations and complexity of pollutants from the wastewater. The centralizedand decentralized treatment systems apply treatment procedures and techniques which can be complementary in solving theenvironmental pollution problems due to wastewater. In the present paper a three-dimensional mathematical model waselaborated b...
Autori: Narcis Barsan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26422

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

AbstractRolling bearings are one of the most commonly mechanical elements used in the construction of dynamic equipment. Thiselement can be considerate as a noise source as a result of relative motion of the components from their construction: rings,rolling elements and cage. The noise level increase with the increase of the roller bearings wear. By analyzing of the rollerbearings wear level, which appear due to the component failure, it can be determine the deterioration stage and their remaini...
Autori: Dumitru-Cristinel Nadabaica
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26430

AbstractThe most important aspect of the national environmental policy concerns air pollutant emission decrease. The studies led in orderto identify the atmospheric pollution sources have revealed that the energy sector is one of the biggest pollutants in the economy.Given the negative impact of the pollutant emissions on the environment and the possibility of closing the large combustionplants in case necessary measures to comply with the legal regulations in the field are not taken will signif...
Autori: Mirela Panainte
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26432

AbstractThe right individuation of the more convenient solution for final treatment and destination of sewage sludge deriving fromwastewater plants, normally after anaerobic digestion process, is a very interesting problem, in accounting of urgent needs foracceptable solutions. The produced sludge, primarily after thermal drying, can be sent to energetic valorization processes as, forexample, incineration, gasification and also pyrolysis. In this work we examined the thermal solutions (both dire...
Autori: Deborah Panepinto
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26435

AbstractEvery year during the winter season, several regions of Guinea (Conakry) are damaged, and losses due to flooding are recorded.This problem is the result of an increase of the sea waters level firstly, and the flooding of coastal rivers on the other hand. So themeasure of water levels and the mapping of flood areas using geographical information systems became essential for civilprotection. The present article investigates the alternatives to delineate those areas, on the basis of the res...
Autori: Diaka Sidibe
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26439

AbstractThe purpose of this article is to elaborate a mathematical model for the prediction of average monthly environmental/outsidetemperature (T) levels in the region of Ruse, Bulgaria. Based on the method of harmonic analysis, amplitudes and phases of themain harmonic oscillations were defined. The results show the dominance of the first three harmonics for the period of theresearch. Visualization of experimental and theoretical values of the model shows a high degree of consistency between t...
Autori: Stoyan Yanev
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26446

AbstractIn order to diminish the climat changes due to greenhouse gases, the capture from the source, transport and storage of carbondioxide is one of the environmental priorities of the EU until 2050. Transportation of this gas through pipelines (one of thesolutions with most advantages in transport) can be done at ambient temperature only at high pressures, so the carbon dioxide toremain in the supercritical state. In case of underground pipelines, there is a risk of cracking at the wall of th...
Autori: Valentin Zichil
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26447

AbstractUnderground space represents an area with multiple management problems, mainly related to water resources management,difficulties for new underground constructions (as diaphragm walls, tunnels, dewatering systems etc.), interpretation of hydrogeologicaldata or influence of the new constructions on the existing ones. The management of this area is even more difficultdue to the multitude of works, of the (sometimes) chaotic development, of the poor legislation, various ownerships of the la...
Autori: Loretta Batali
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26449

AbstractAdaptive water resources management recognizes the centrality of learning to its effective implementation. However, theliterature on learning in Adaptive Management (AM) is disjointed and lacks rigorous treatment. The purpose of this paper is toclarify how learning associated with AM is distinctive and to explain the importance of successfully integrating it into policydesign. Because adaptive learning holds a unique position within the adaptive management and assessment process, it shou...
Autori: Wietske Medema
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26450

AbstractThe main purpose of the present work was to evaluate the potential of plum (P. domestica L.) tree bark (PDB) to remove Cr(VI)and total chromium from aqueous solutions in batch systems. Experimental data showed that the Cr(VI) and total chromiumremoval capacity was dependent on operating variables such as PDB particle size, PDB pretreatment, solution pH, initial Cr(VI)concentration, and contact time. The mechanism of Cr(VI) removal by PDB implies two simultaneous processes: 1) the reducti...
Autori: Perla Vianey Lopez-Nuńez
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26464

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

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

AbstractThis work presents an original method and an automated installation to recover by combustion the waste gas obtained in theignition process of xylites in rotary kiln. The flue gas resulting from the combustion of waste gas, with light fuel support areused in the technological processes of obtaining activated carbon, satisfying the conditions where the oxygen content does notexceed 0.3 % vol. and the temperature is above 1200°C, conditions imposed by the Project Manager of the European pro...
Autori: Aurel Gaba
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26461

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

AbstractA series of experiments were performed to quantify the adsorption of Cesium on Silica impregnated withtrihexyl(tetradecyl)phosphonium chloride (Cyphos IL-101). Non-radioactive cesium solution was used as a surrogate of theradioactive 137Cs. The obtained impregnated Silica with the studied ionic liquid was characterized through scanning electronmicroscopy, energy dispersive X-ray analysis and Fourier transform infrared spectroscopy in order to put in evidence that theimpregnation with the...
Autori: Adina Negrea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26473

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

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

AbstractMunicipal solid waste management is a matter experienced by the entire world, mostly encountered in urban areas as a result ofpopulation growth and increased income per capita. This issue always posed threats to environmental quality and human health,and continues to be one of the major environmental problems people continues to face. In the last few decades, the systemsanalysis techniques have been applied to manage the municipal solid waste (MSW) streams through a range of integrativem...
Autori: Cristina Ghinea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26481

AbstractFault-Trees (FT) and Event-Trees (ET) are well recognized techniques worldwide, which have been used by reliability experts infailure analysis of complex technical systems. In risk assessment (RA) of Occupational Health-Safety Systems (OHSS), thesituation is absolutely different, since their application is not quite expanded and has not been extensively incorporated in themain risk assessment methodologies of OHSSs, despite their significance. In this article, we review and classify FT/E...
Autori: Panagiotis Marhavilas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26483

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

AbstractIn this study, boron-doped diamond (BDD) electrode was tested in electrochemical oxidation and reduction processes using thesame vertical electrodes undivided cell in order to remove natural organic matter (NOM) and nitrogen compounds (NC) fromdrinking water. Boron-doped diamond-based electrochemical oxidation process has proven to be an efficient and versatilemethod suitable for NOM and NC in forms of nitrite and ammonium present in drinking water sources. However, the applicationof BDD...
Autori: Florica Manea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26492

AbstractBisphenol-A (BPA; 2,2-bis(4-hydroxyphenyl)propane) is a monomer used primarily in the production of polycarbonate andepoxy resins that has been reported to have estrogenic activity. The biodegradability of BPA has been previously investigated inseveral studies designed to simulate surface waters and biological wastewater treatment systems. However, there is littleinformation available about the phytoremediation of groundwater contaminated with BPA. Halophytic species are of specialintere...
Autori: Margarita A. Petoussi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26493

AbstractFluorescence spectroscopy and parallel factor (PARAFAC) form a powerful tool in separating different fluorophores and maybe useful in detecting the fluorescent signature of dissolved organic matter (DOM). Despite the large number of studies onfluorescence and PARAFAC it is still uncertain if this combination is capable to separate DOM from different water types byanalyzing the presence of specific components and their spectral shape. This paper presents a preliminary study on thefluoresc...
Autori: Elfrida M. Carstea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26495

AbstractEnhanced nitrogen inputs to both terrestrial and aquatic ecosystems affects biodiversity at all its levels. Grasslands provide acomplex range of functions, due to their wide representation throughout terrestrial ecosystems. Numerous studies demonstratesoil acidification, eutrophication and species richness reduction as a result of elevated reactive nitrogen availability. The presentstudy aims to assess soil nitrogen stocks and transformations for two Romanian grasslands during November 2...
Autori: Carmen Postolache
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26497

AbstractThe phonic pollution has become a more serious problem in the recent years, especially because of traffic increase. This kind ofpollution is generated by all kinds of means of transport. One of its peculiarities is the repercussion it has on people, unlike theother types of pollution, i.e.: water pollution, air pollution, soil pollution, which can affect, to a certain extent, the entireenvironment. The phonic pollution is considered to be the most widely spread type. The numerous surveys...
Autori: Carmen Grecea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26500

AbstractThe paper concentrates on the risks of modern technologies (in wood processing and metal industry, spray-painting processes andcar washing technologies) in the industrial and office environments on human health. The problems discussed are the following:fine dust (PM2.5and PM1.0) penetrating deeply into the lungs; high concentration of carbon dioxide in the air of cities and officeareas that are situated close to the transport junctions. The health damages can be described as follows: all...
Autori: Ada Traumann
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26501

AbstractThis study, analyzes the benthic macroinvertebrates community structure and composition in order to assess the ecological statusas required by the Water Framework Directive (WFD). Macroinvertebrates are the appropriate indicators to describe habitatheterogenity and the water bodies ecological status by turning the allochtone material into biomass, which is then transferred tothe upper trophic levels. Moreover, the macroinvertebrates have the capacity to integrate in their structure the e...
Autori: Catalina Stoica
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26502

AbstractThe impact of modern structures on the environment during the building process and actual life-cycle becomes more and more ofa problem and needs to be minimized using unconventional architectural and building solutions, materials and overallacknowledgement of the whole concept.This study has the task of determining the feasibility of a modern earth sheltered house solution by comparing its thermalperformances and environmental impact to a conventional above-ground building solution. Alth...
Autori: Horia Tundrea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26517

AbstractFault-Trees (FT) and Event-Trees (ET) are useful analytic tools for the assessment of reliability and safety of complex technicalsystems, and occupational health-safety systems (OHSS), as well. In this work we broaden and expand our previous studyregarding the features of FT/ET methods. To clarify this further, in the present article we statistically analyzed the results of aliterature survey, concentrated on FT/ET techniques applied in risk assessment (RA) of OHSSs, in order to (i) depi...
Autori: Panagiotis Marhavilas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26518

AbstractThis paper presents the effects of regularization and embankment of the Olt River and drainage of its floodplain on thegroundwater table from meadows and on the erosion base levels of tributaries within Ciuc Depression. The hydraulic worksreduced the wetlands and had important impact on the aquatic flora and fauna of the river and its floodplain. Measurements andobservations (before 1985 and after implementation of hydraulic works in 2008) undertaken upon the river, upon the drainagesyst...
Autori: Iosif Bartha
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26519

AbstractDespite a growing literature on the importance of environmental activities for firms’ strategies, there are still few studies aimed atanalysing whether an environmental orientation has any impact on innovation performance. Firms within the chemical industryhave a great concern for this subject, due to the larger impact that their decisions could have on the environment. This studyfocuses on the chemical industry and contributes important findings regarding the relationship between a firm...
Autori: Ángela González-Moreno
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26555

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Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26526

AbstractGreywater (GW) has attracted global attention as an alternative water source over the last few decades. GW treatment andreliable reuse require the overall qualitative characterization of samples from different sources. This paper represents aninvestigation of household-generated GW in the Northern Great Plain Region of Hungary. Modern and reliable analyticaltechniques and instruments (ion chromatography, microwave plasma atomic emission spectrometry, Zetasizer Nano Z analysis,etc.) were ...
Autori: Ildiko Bodnar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26528

AbstractThe building stock in Eastern European countries varies greatly in terms of the thermal properties of the materials used. Duringrecent decades, the requirements related to building energy performance have been changed. Nevertheless, the number of newlybuilt buildings has decreased in recent years, so there are few buildings that fulfill the strictest requirements that were recentlyintroduced. Several national programs have been started to help owners improve the energy use of their build...
Autori: Béla Bodó
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26529

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

AbstractThe Hungarian Parliament’s Decision 25/2009 (IV.2.) gave the approval to start preparatory activities for establishing newreactors on-site at Paks Nuclear Power Plant. Furthermore, Hungary ratified a treaty with the Russian Federation, signed inMoscow on January 14, 2014, for cooperation in the peaceful use of nuclear energy. Through these activities, Hungary has madeits commitment to nuclear energy clear. In this article, we attempt to prove that neither the law of the European Union, n...
Autori: László Fodor
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26533

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

AbstractAn important target of the European Union and national governments is to increase the contribution of renewable energy to thetotal energy supply. According to numerous estimates, the proportion of renewable energy sources of the global energyconsumption could reach 15 to 20 percent by the middle of the 21th century; moreover the total amount of investments inrenewable energy sources could be 2.5 times greater than the current level. This increased investment is definitely achievable duet...
Autori: György Csomós
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26536

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 sustainable refurbishment of the existing building stock is a key issue in achieving the ambitious long-term energy andenvironmental goals of the European Union. Europe has a vast building stock built with prefabricated reinforced concrete largepanelconstruction technology after World War II to decrease the general housing shortage, mostly in the Eastern-Europeancountries and East Germany.This study focuses on the environmental evaluation of the retrofitting of the existing precast l...
Autori: Sára Hrabovszky-Horváth
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26538

AbstractThe relationship between the use of renewable energy sources and other characteristics of national economies has frequently beeninvestigated, and a wide range of approaches can be observed in publications. The aim of this study to examine the potentialrelationship between the ratio of renewable consumption in gross energy consumption, GDP per capita, and R&D expenditures inEuropean Union countries. Data are analyzed in their original forms, and a mathematical model is presented that ...
Autori: Imre Kocsis
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26542

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

AbstractThe thermal and water insulation of buildings is extremely important. Currently, the most applied insulation materials in thebuilding sector are plastic foams and fibrous materials. Different types of polystyrene materials are used as water and thermalinsulators, e.g., expanded polystyrene (EPS) and extruded polystyrene (XPS). The differences between the different polystyrenematerials is found in their manufacturing processes and thus in their microstructure. Our research focuses on the ...
Autori: Ákos Lakatos
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26546

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

AbstractIn our study, we examined the annual carbon footprint and energy balance of a Hungarian biogas power plant with a poweroutput of 0.637 MW in 2013, with reference to the complete life cycle of the biogas production. The life cycle analysis (LCA)considered the emissions of greenhouse gases (GHG) during the production of feedstock and its transportation into the powerplant, during the operation of the factory and during the process of rendering the discarded waste materials harmless. Weesta...
Autori: György Szabó
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26548

AbstractCurrently, thermal insulation of buildings is required from both an energy savings perspective and a money savings perspective.Insulation is primarily installed on the outer surface of the buildings. Weather and other circumstances can produce humidity thatcan act on the building structure, e.g., by changing its heat capacity, the heat transfer coefficient and/or other factors. As a result,it is important to measure the sorption behaviors of the construction materials. To perform sorptio...
Autori: Ferenc Szodrai
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26550

AbstractIn Central European countries, heating represents approximately 75% of the total energy use of a residential building, withaverage thermal characteristics of the envelope. The expected energy use can be determined using complex simulation programs,but an easier way is to use specific degree day values. Degree day values should be calculated as precisely as possible. At presentin Hungary, the degree day values that are used for simplified energy calculations were determined several decade...
Autori: Zoltán Verbai
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26551

AbstractA zero-energy research program was recently established. Under this research program, we collaborated with anotherdepartment. The goal of the collaboration was to develop a gravitational, zero-energy ventilation system sufficiently efficient touse in a passive house or in a zero-energy building. We developed a method to measure all of the necessary variables andparameters required to calculate the effectiveness of the theoretical description of the approach....
Autori: Attila Vitéz
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26552

AbstractDue to the continuously increasing trend in the costs of the traditional fossil fuels, the development of residential or commercialbuildings with reduced energy needs becomes a significant and more pressing scientific challenge. At the same time, consumersare increasingly demanding more comfortable buildings, where the energy needs are addressed using locally available renewableenergy resources. Consumers also require a higher level of security, supervision, and control of the building, ...
Autori: Géza Husi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26553

AbstractLand decay processes caused by erosion are very serious by their long term impact on the quality of soils, surface waters,environment and living standards. This article presents the results of a spatial erosion modelling. A new methodology is herebyproposed to estimate the soil losses caused by water erosion. The method is based on using GIS techniques, and its noveltyconsists in applying the mathematic calculation model on the pixel/ cell level, by using the “overlay” technique, which g...
Autori: Gabriela Biali
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26559

AbstractThis paper presents the experimental results obtained during testing in an electromagnetic field with non-ionizing radiations fromlow-intensity microwaves acting on a group of substances consisting of: double distilled water, neutralized to pH = 7; drinkingwater with pH = 7.3; slightly acidic aqueous solutions obtained by diluting the acetic acid at concentrations of 2.25‰, 4.5‰ and9‰ in double distilled water, for pH = 6.8, 6.7 and 6.5, respectively. The exposure of the samples was perf...
Autori: Gheorghe Morariu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26562

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 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

AbstractInterest in the relationship between innovation and Corporate Social Responsibility (CSR) has grown considerably in the last fewyears. The aim of this paper is to analyze the relationship between a company’s technological posture and CSR, as one of themain determinants of technological innovation performance. From knowledge-based and stakeholders’ theories a structuralequations model of relationships was established and statistically tested through Smart PLS on a sample of Spanish firms ...
Autori: María I. González-Ramos
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26576

AbstractThe CO2 electroreduction in gas phase using Pt on carbon black catalysts is investigated in this work. This process is expected tobecome a key technology to prevent anthropogenic CO2 emissions. Specifically, the electrocatalytic reduction in a solventless gasphase is studied, as a first approach to later develop a photoelectrocatalytic device for the efficient conversion of CO2 to fuelsusing solar energy for the reaction. The objective of this preliminary work has been the tuning up of t...
Autori: Fabiola Martínez
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26578

AbstractThe general aim of this paper is to demonstrate the sustainable management of a broad spectrum of wastes (livestock, industrial,agri-food, agricultural and non-recyclable fraction proceeding from waste treatment plants) in an integrated plant. Thetechnological development and practical application of the “Mixed Plant” concept is used to achieve this objective. In order tovalorize in a joint form all the above-mentioned categories of waste, two different processes have been integrated. Th...
Autori: Dolores Hidalgo
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26579

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 This study evaluates the potential of Crambe abyssinica press cake, a residue from crambe oil extraction and/or biodiesel production, as an adsorbent for removal of cationic dyes from wastewaters. Batch adsorption tests were performed at 30, 40 and 50oC. Adsorption kinetics and equilibrium were satisfactorily described by the pseudo second-order and Freundlich models, respectively. Adsorption was spontaneous and exothermic. Fixed bed adsorption (breakthrough curve) was satisfactoril...
Autori: Adriana S. Franca
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26597

Abstract This article covers the investigation of the catalyst waste (T.R.M 1 and T.R.M 2) produced in the reactor of oil catalytic cracking. The analysis of this waste was carried out. The properties of T.R.M 1 and T.R.M 2 were investigated and determined, the mineralogical analysis of catalyst waste was implemented, the analysis of thermal effects during the burning was performed. Catalyst waste materials investigated were used in a ceramic system (from 7  to 20  of the ove...
Autori: Olga Kizinievič
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26600

Abstract High resolution gas chromatography coupled with high resolution mass spectrometry systems are often used for the analyses of dioxins at low concentrations in environmental sample matrices such as soil, vegetation, sediment, air and food. Since the construction and operation costs of these systems are so expensive, the most of the laboratories in the developing countries haven’t the systems with high resolution mass spectrometry. Thus, cheaper systems with similar sensitivity s...
Autori: Mahmut Kemal Korucu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26601

Abstract In the Netherlands green gas is seen as a sustainable alternative to natural gas. However, green gas is still not competitive to natural gas in terms of pricing, and production volumes are remarkably low. Currently, there is a lot of attention to green gas which stems from upgraded biogas, which is produced by manure-based anaerobic co-digestion by livestock farmers. In this article the central question is to understand green gas demonstration projects from stakeholders’ persp...
Autori: Thomas Hoppe
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26603

Abstract Xi’an-Baoji Highway is one of the oldest and most important highways in northwest China. In this study, the concentrations (0-20 cm) of Pb, Zn, Cu and Cr at 5-1000 m distances in the roadside soils along Xi’an-Baoji Highway were experimentally determined to analyze their spatial distribution and evaluate their contamination levels. The spatial distribution (mg·kg-1) of Pb, Zn, Cu and Cr at 5-1000 m distances from the both roadsides (North/South) is, respectively, ...
Autori: Shuanxi Fan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26610

Abstract This study is focused on the dissolution kinetics of zinc oxide in ammonium acetate solutions to recover the zinc from alkaline and zinc-carbon spent battery powders. This study represents a first step for further studies in which actual waste powder is to be used. Therefore, the experiments were performed by using pure zinc oxide powder to evaluate the dissolution behavior of zinc. The effects of ammonium acetate concentration, reaction temperature, stirring speed and solid to liqu...
Autori: Nizamettin Demirkıran
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26618

Abstract Activated carbon was prepared from renewable plant material, that is Euphorbia rigida, by chemical activation using zinc chloride as activating reagents. The adsorption of Basic Blue 9 (BB9) onto activated carbon was investigated in a batch system with respect to contact time, pH and temperature from aqueous solutions. The experimental data indicated that the adsorption isotherms are well described by the Langmuir isotherm model and the calculated maximum adsorption capacity of acti...
Autori: Özgül Gerçel
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26627

Abstract Product eco-innovation based on ecodesign principles is based on the idea of including the environmental aspects of a product over its entire life-cycle, thus providing the opportunity for manufacturing companies to intervene earlier during product development processes. The aim of this study was to gather information and evaluate the situation regarding ecodesign within the ISO 14001 certified medium and large manufacturing companies in the Republic of Slovenia by means of a questi...
Autori: Gregor Radonjič
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26630

Abstract In order to reduce public annoyance produced by the noise generated from a District Heating Plant (DHP) upon an urban residential area, a noise assessment was performed. The paper illustrates the evaluation of noise envelope around the DHP, considered as an overall source made of six distinct sound sources. As receptors, there were considered five points on the facades of the closest residential blocks. The specific feature of the research work was the configuration of the area havi...
Autori: Mihail-Tudor Marcu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26632

Abstract The purpose of this study was to investigate the influence of hydroxypropyl-β-cyclodextrin on diosmin, substance from the flavones category with important pharmacological properties. We carried out solubility studies, calculating the solubility constant of the complex formed between diosmin and hydroxypropyl-cyclodextrin at various temperatures (20, 25 and 37 0C) and in the presence of increasing cyclodextrin concentrations. AL type curves were obtained which suggest the format...
Autori: Constantin Ciobanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26643

Abstract The development strategy of the European Union until the year 2020, Europe 2020, militates for an intelligent economy, sustainable and favorable to inclusion. Following these principles, each Member State establishes its targets and action plans at a national level. On the other hand, the rural zones benefit from diverse forms of renewable energy which can assure their development and energetic autonomy, bringing important advantages to the rural community: the diminishing of energy...
Autori: Liliana Topliceanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26644

Abstract The utilization of manure for waste-to-bioenergy conversion processes may be a sustainable development choice rather than its traditional use as a fertilizer. Furthermore, the valorization of manure via thermochemical conversion routes and their integration with biological processes can provide an additional pathway in the utilization of residual biomass. On the other hand, the use of metal oxides might enhance the performance of thermochemical processes such as pyrolysis by either ...
Autori: Maria Fernandez-Lopez
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26647

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 Temperature-dependent d.c. electric conductivity of some recently synthesized organic compounds, 4,7-phenanthroline derivatives is studied. Thin-film samples (d=0.34-0.63 m) spin-coated from dimethylformamide solutions onto glass substrates have been used. Organic films with reproducible electron transport properties can be obtained if, after deposition, they are submitted to a heat treatment within temperature range of 298523K. Examined organic compounds in thin fil...
Autori: Cristina M. Al Matarneh
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26656

Abstract The oxygen transfer into the fermentation broths could be improved in presence of oxygen-vectors, without intensification of mixing or aeration. The experimental results for simulated, P. shermanii and S. cerevisiae broths indicated the significant increase of kLa, by adding n-dodecane, but the magnitude of this effect depends especially on the cells affinity for hydrocarbon droplets. Therefore, due to the higher affinity of yeasts cells for hydrocarbon droplets during their entire ...
Autori: Anca Irina Galaction
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26657

Abstract The present work investigates the performance of Cristal-RightTM CR100 zeolite based on the equilibrium and thermodynamics water softening process. The commercial zeolite was characterized by scanning electron microscopy combined with energy dispersive X-ray spectroscopy and FT-IR spectroscopy. The equilibrium performances of zeolite were evaluated by the sorption capacity of calcium cations from calcium chloride solutions varying the calcium concentrations corresponding to moderate...
Autori: Liliana Lazăr
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26670

Abstract The transformation of lentic ecosystems in other types of ecosystems (plain, forest) is a part of normal process of ecological succession that occurs slowly, at geological scale. The filling of cuvette with eroded material transported by precipitations, air masses or detritus produced in situ, start from the moment when the body of water lakes is formed and has different rates depending on many factors: geographical location, geological substrate type, types of existing uses in the ...
Autori: Ofelia Axinte
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26672

Abstract The experiments on the olive oil mill wastewater treatment for removing the lipids by anaerobic and aerobic biodegradation with mixed Bacillus spp. culture indicated that the rate of the aerobic process is up to two times higher than that of the anaerobic one. In this context, it was found that the influence of the dissolved oxygen concentration on the lipids biodegradation process is significant, but the kinetic model given in literature does not consider this parameter. Therefore,...
Autori: Ramona Mihaela Matran
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26674

Abstract Nowadays, an efficient wastewater management involves the use of advanced treatment technologies able to decompose hardly biodegradable compounds with reasonable costs at the lowest possible environmental impact. In our work we used one of the most efficient advanced wastewater treatment, the Fenton reaction and its photo-assisted version. The hydrogen peroxide was the oxidizer; despite its relatively high cost, its high activity in oxidizing of a large variety of organic persistent...
Autori: Vasilica-Ancuta Simion
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26677

Abstract The use of hydrogen in spark ignition engines as a supplementary fuel can enhance combustion and reduce toxic emissions. Difficulties in hydrogen storage and production limit its use in internal combustion engines. This paper investigates the performance of a spark ignition engine with the addition of a mixture of hydrogen (H2) and oxygen (O2) into the intake manifold. Hydrogen is produced by an alkaline electrolyser and consumed simultaneously to eliminate the need for a storage de...
Autori: Yasin Karagöz
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26685

Abstract Mapping the distribution of populations has become an important issue in geographical and relative researchers. Combining population and spatial data allows for socio-graphic information to be visualized, in order to evaluate the total numbers of people at risk of environmental health hazards, who have died in natural disasters etc. Therefore, spatial distribution of population data is an effective way to integrate statistical and spatial data. This paper presents a multi-factor dat...
Autori: Yu Zhang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26686

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

Abstract 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 Anaerobic processes have been successfully applied in the treatment of municipal and industrial wastewaters. Judicious use of nutrients in anaerobic treatment has not been systematically investigated. The optimal nutrient dosage for anaerobic wastewater treatment systems is largely unknown. In this paper, COD:N:P ratio used by various researchers in anaerobic wastewater treatment systems for treating different types of wastewaters are compiled and critically analyzed. In order to ha...
Autori: Athar Hussain
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26697

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 This research evaluated two electrokinetic remediation systems (EKR) for separating phenanthrene from bentonite and its electrochemical destruction by using a Boron Doped Diamond (BDD) electrode. The effect of the electrochemical potential for the oxidation of phenanthrene in liquid phase with Ti/BDD was analyzed by Normal Pulse Voltammetry and Hydroxyl Radical (●OH) analysis using the Spin Trapping Technique. The results showed that 70% of phenanthrene was removed from benton...
Autori: Alejandro Medel
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26710

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 Maximum removal (94±1.2%) of 2, 4 dichlorophenol (50 mg.dm-3) was achieved on silica with agitation of 4 hours, at pH 8 and 42°C. The positive enthalpy (ΔH) and negative free energy values (ΔG315K) suggested the endothermic and a spontaneous nature of sorption. The free energy of the process at all temperature was negative and increased with the increase in temperature. The values of free energy suggested a spontaneous process where the spontaneity decreased w...
Autori: Abdul Ghaffar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26718

Abstract Planktonic algal samples were collected from lakes with different salinity (Salt Lake Brăila, Amara Lake, Fundata Lake, Techirghiol Lake and Black Lake-Sovata), in which mud used in balneary therapy is formed. A total of 189 species were recorded: 35 Cyanobacteria, 10 Euglenophyceae, 96 Bacillariophyceae, 33 Chlorophyceae, 3 Chrysophyceae, 2 Cryptophyceae, 1 Xantophyceae and 9 Dinophyceae. The highest number of phytoplankton species was recorded in Techirghiol lake (127 species...
Autori: Liana Gheorghievici
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26719

Abstract The Organizations of the 21st century had evidenced that Management Systems and Standards have become a key aspect for their sustainable development and a prerequisite for their existence. In this recent decade, the Systems for Quality (ISO 9001:2008), Environment (ISO 14001:2004), Occupational Health and Safety (OHSAS 18001:2007), Corporate Social Responsibility (SA 8000:2008 and ISO 26000:2010) and Risk Management (ISO 31000:2009) form the core pillars of the Organization, supple...
Autori: Gopalakrishnan Muthu Samy
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26720

Abstract The aim of this study is to evaluate adsorption kinetics, isotherms and thermodynamic parameters of anionic textile dye (Acid Red 88) onto montmorillonitic clay from aqueous solutions. The parameters of pH, initial dye concentrations, temperature, and the adsorbent dosage were investigated experimentally. Four kinetic models including pseudo-second order, pseudo-nth order, Bangham’s equation and double exponential equation (DEE) were selected to follow the adsorption process. ...
Autori: Sedef Dikmen
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26731