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

A series of new Ni(II) poly-phosphinates have been synthesised using Ni(II) acetylacetonate as nickel precursor and a succession of ligands derived from phosphinic acid: ethyl-butyl-phosphinic acid, ethyl-butyl-thio-phosphinic acid, and respectively ethylbutyl-di-thio-phosphinic acid. Chemical analysis gel-chromatography, infrared spectroscopy (IR), spin electronic resonance (RES), X-ray diffraction (XRD), thermal gravimetric analysis (TGA), electrical resistance measurements at different temper...
Autori: Daniel Sutiman, Doina Sibiescu, , Mircea Teodor Nechita
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25118

AbstractThe corrosion behaviour of three commercial nickel-chromium based dental materials was investigated by electrochemical methods in a corroding mixture of sodium chloride, oxalic acid and lactic acid. In order to establish electrochemical parameters of the corrosion process, linear and cyclic polarization curves were plotted. The samples performances in the corroding system were investigated by weight loss, pH and electrical conductivity measurements. The quantitative analysis related with...
Autori: , Daniel Mareci, Daniel Sutiman, Mircea Teodor Nechita
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25132

AbstractCatalysts having mobile electrons in bulk such as metals and semiconductors are good solid materials for red/ox type of reaction (oxidation) and can be effectively used in gas sensing devices as well. The aims of this work were: (i) to investigate the surface behavior of Pt(0.28%)/Al2O3 and SnO2(2.94%)-Pt(0.28%)/Al2O3 samples in inert atmosphere (He) and in reducing atmosphere containing helium-cyclopropane gas mixture under ambient condition (i.e., room temperature, atmospheric pressure...
Autori: , Cornel Munteanu, Jozsef Kovacs, Mariana Scurtu, Monica Caldararu, Tatiana Yuzhakova
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25146

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

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

Iinclude urmatoarele articole:â€? Phenol degradation in water through a heterogeneous photo-fenton processâ€? Study concerning the influence of oxidizing agents on heterogeneous photocatalytic degradation of persistent organic pollutantsâ€? Nonmarket valuation of acequias: Stakeholder analysisâ€? Metals concentration in soils adjacent to waste depositsâ€? Polyelectrolyte - surfactant complexesâ€? Modelling of sorption equilibrium of Cr(vi) on isomorphic substituted Mg/Zn-Al - type hydrotalcitesâ...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25206

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

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

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

AbstractThe 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

AbstractThe aim of this work was to study the content of Fe, Mn, Zn and Pb in the mixtures which contain volatile oil between othercomponents, obtained after the Soxhlet extraction or maceration of the samples (different organs of garden flowers - blue hyacinthand chrysanthemum). The blue hyacinth is a bulbous perennial herb in the Lilliaceae family, grown for its showy and fragrantspringtime flower display. Garden chrysanthemums are tender perennials in the Asteraceae family in double-flowered ...
Autori: , Simona Dobrinas, Viorica Popescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25294

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

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

AbstractHigh proton conductivity of CsHSO4 opened new opportunities for applications as electrolyte in solid acid fuel cells (SAFC). Relatively recent, it was proved that the accommodation of this solid electrolyte by silica supports improves its proton conductivity. During this work, solid acid CsHSO4 and its composites with mesoporous silica of SBA-15 and MCF-types as host materials were synthesized and studied for the first time. Studies were mainly focused on the influence of mesoporous supp...
Autori: Adrian Ungureanu, Brindusa Dragoi, Emil Dumitriu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25366

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 study presents the processing possibilities for marc resulted as still residue from the distillation of fermented fruits in view to obtain a compacted solid fuel. Initial marc composition (carbon, hydrogen, nitrogen, sulphur and oxygen contents) determined by elemental analysis is evidenced, as well as technical characterisation (ash and moisture contents) and ash's qualitative composition, chemical characterisation of the liquid phase (pH, total phosphorus, acidity and conductivity)...
Autori: Daniela Simina Stefan, Anca-Ileana Penu, Mircea Stefan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25391

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

Abstract Study of geopolymer is a developing field of research for capitalizing solid waste and by-products in the view of new materials achievement having characteristics necessary for using as cement substitute. Also, it provides a solution to many problems regarding environment, such as reduction of gaseous emissions and particles matter resulted from cement industry and raw materials economy. In this paper, the experimental conditions for obtaining new materials on the basis of fly ash f...
Autori: Maria Harja, , Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25419

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

Abstract 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 The paper presents a comparative approach concerning the properties of TiO2 thin layers obtained via spray pyrolysis deposition (SPD) using hydrophilic and hydrophobic polymers as additives. The influences of composition (X-ray diffraction), morphology (Atomic Force Mycroscopy, Contact angle) and optoelectric (electrical conductivity, absorption, band gap and photocurrent) properties on the photocatalytic activity of the layers were studied. ...
Autori: Alexandru Enesca, Luminita Andronic, Anca Duta
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25479

Abstract Macro-Defect-Free (MDF) cements are polymer-cement composites characterized by high value of flexural strength. Due to their thermal and electrical insulating properties, MDF cements could replace other insulators obtained by environmental non-friendlier technologies or being themselves toxic and non-biodegradable. MDF cements obtained by the use of an ecologic polymer (poly(vinyl alcohol)) shows high mechanical resistance in the initial state but also it’s dramatic decrease after ...
Autori: , Georgeta Moise, Hulusi Ozkul, Ozgur Ekincioglu, Catalin Croitoru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25493

Abstract 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 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

? STUDY OF BIODIESEL PRODUCTION FROM OILSEED PLANTS II. EVALUATION OF BIODISEL PRODUCTION FROM SOME CULTIVARS OF RAPES ? STUDY OF BIODIESEL PRODUCTION FROM OILSEED PLANTS I. EVALUATION OF THE GENETIC SIMILARITY OF SOME Brassica Napus CULTIVARS USING RAPD MARKERS ? STRUCTURAL CHARACTERIZATION AND IN VITRO CYTOTOXIC POTENTIAL OF COAL DUST IN A ROMANIAN POWER PLANT ? MUNICIPAL SOLID WASTE MANAGEMENT IN BENGHAZI (LIBYA): CURRENT PRACTICES AND CHALLENGES ? COMPARATIVE ENVIRONM...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25661

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

? EFFECT OF ELECTRICAL CURRENT ON H2/ H2O2 GENERATION IN NON-THERMAL PLASMA GLIDING ARC REACTORS ? ADVANCES IN THE VISUALIZATION OF THREE-DIMENSIONAL SEISMIC VOLUME DATA ? CHARACTERIZATION OF ELECTROMAGNETIC RADIATION FROM A PATIENT MONITOR ? METHODS OF ELECTROMAGNETIC INTERFERENCE REDUCTION IN ELECTROCARDIOGRAPHIC SIGNAL ACQUISITION ? SPHERICAL MODEL OF THE HUMAN HEAD EXPOSED TO ELECTROMAGNETIC FIELD ? BRAIN ELECTRICAL ACTIVITY RECORDING IN SOME ELECTROMAGNETIC ENVIRONM...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25667

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

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

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

The 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

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

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

Abstract: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: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 paper presents the influence of different WO3:TiO2 ratios on the photocatalytic and photoelectrolytic properties of the films.The investigations are focused on the morphological (Atomic Force Microscopy, Contact angle), compositional (X-raydiffraction), optoelectric (conductivity, photocurrent) and photocatalytic properties of titanium dioxide films mixed with tungstenoxide. The most important application of these layers is in wastewater purification and hydrogen production using ap...
Autori: Alexandru Enesca
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25743

Abstract:The 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:Films of CuxS with 430-700 nm thickness were deposited by robotic spray pyrolysis technique, at T = 300Â?C, using 90 sprayingsequences, from water:ethanol:glycerol = 7:2:1 (in volumes) solutions with a molar ratio Cu:S = 1:2.5-3.5. Relative dense,homogenous and uniform films of CuxS (x = 1.8-2), with Eg = 1.97-2.49 eV and exhibiting electric resistance behavior wereobtained. The as-deposited films were annealed in air or in sulfur atmosphere, at 300 Â?C, for one hour. Dense and uniform ...
Autori: Alexandru Enesca, Anca Duta, Ionut Popovici, Luminita Isac
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25749

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

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

Abstract:Our research was focused on developing some new procedures to reduce the biodegradable wastes by composting. The aim of thisstudy was to obtain and asses at laboratory scale the maturity of three compost samples of different proportion of vegetable waste,beech sawdust and sewage sludge by analyzing their FT-IR spectra and C/N ratio. The composting process was monitored by testsperformed weekly on the three samples in order to investigate the physical parameters (pH and electroconductivi...
Autori: Anca Sauciuc, Claudia Zaha, Ileana Manciulea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25772

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

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

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

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

The performances of two types of multi-walled carbon nanotubes-based composite electrodes, i.e., MWCNT-Epoxy (CNTEpoxy) and Natural Zeolite-modified- MWCNT- Epoxy (NZ-CNT-Epoxy) are described in order to use them for electroanalytical application. Both electrodes were synthesized, electrically and electrochemically characterized and tested for the detection of ascorbic acid (AA) in aqueous solutions. The electrochemical characterization using classical potassium ferricyanide method showed a high...
Autori: Adriana Remes, Anamaria Baciu, Elida Ilinoiu, Florica Manea, Joop Schoonman, Stephen J. Picken
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25877

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

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

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

AbstractThis paper reports the effects of COD:sulfate ratio on sulfate removal and electricity generation from oil shale retort watertreatment using microbial fuel cells (MFCs). Field-collected retort water was augmented with organics to obtain a range of initialCOD:SO42- ratios (0.5:1 to 2:1), and treated in two different MFC designs (tubular and two-chambered). The two-chamberedMFCs exhibited COD and sulfate removal 1 to 2 orders of magnitude higher than those of the tubular MFCs. The tubular ...
Autori: Ho Il Park, Lian-Shin Lin
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25954

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

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

AbstractThis paper presents some results of the brain electrical activity’s analysis in case of the magnetic stimulation. It was recorded andanalyzed the electroencephalography (EEG) signal during magnetotherapy procedures in abdominal region, considering this factlike as a possible exposure of subject at magnetic field. The recordings of EEG signals are performed on 13 healthy volunteers inthree conditions (before, during and after magnetic stimulation), using three types of sinusoidal pulses. ...
Autori: Călin Corciovă, Doru Andriţoi, Mariana Ciorap, Radu Ciorap, Valeriu David
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26005

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

AbstractThere is no analytical method for calculating the distance between drains placed in multilayer (heterogeneous) ground operating inpermanent flow regime in the literature. The calculation method proposed in the paper, for this situation, is based on the equationelaborated by Ernst for a bilayer ground with drains whose centers are on the borderline between hydrogeological layers. Thepaper presents the calculation model, the equation specific to the situation and the considerations on all ...
Autori: Dragoş Cojocaru, Ioan Cojocaru, Paula Cojocaru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26055

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

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

Abstract This study focuses on the local scale behavior of SO2 emissions resulting from lignite-combustion thermal power plants. The investigations aimed at monitoring the SO2 emissions and imissions over a two week period in September 2010. One of the largest power plants from Eastern Europe was chosen for monitoring using different optoelectronic techniques. Rovinari power plant (44o54’45”N – 23o09’44”E) is one of the largest electricity suppliers of Romania, having 4 groups of 3...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26113

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

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

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

Abstract 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

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

AbstractNowadays, companies at the electrical industry have to meet numerous environmental requirements which involve a largeincrement in their costs. However, it is considered that these investments made by organizations may affect positively to theirreputation and therefore to their profits.So the aim of this paper is to analyze the influence that some Environmental variables related to the emission and resourcereductions have on the Financial Performance of the electrical firms through a data...
Autori: Bernabé Escobar-Pérez
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26195

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

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

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

AbstractThe 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

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

AbstractThis study aims to investigate the environmental impacts of the municipal waste disposal facility of Pata Rat, Cluj-Napoca, Romania during dry periods of the year. The environmental impact assessment on the landfill site was carried out on the basis of the measurements of environmental quality indicators. Environmental indicators were measured in the surface water, soil and air. For the assessment of the environmental impacts generated by landfill on surface water measurements were carri...
Autori: Ákos Rédey, Anca Gurzau, Antoanela Popovici, Constantin Măruţoiu, Fazekas Bence, , Ildiko Varga, Raluca Mariana Haţegan, Tatiana Yuzhakova
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26296

AbstractAccording to the contemporary research, there are some indications that extremely low frequency electromagnetic fields, such asthose originating from electric power transmission lines, can have some influence on human health. This work involved thecomputation of the magnetic field generated by one typical 110 kV power transmission line in Serbia by applying artificialintelligence techniques that, as previous investigations confirmed, allow accurate assessment. At first, the investigation...
Autori: Jasmina Skerlić, Jasna Radulović, Milorad Bojić, Vesna Ranković
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26316

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

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

AbstractThe paper represents the application of a multicriterial analysis for establishing the decisional priorities in the field of impactsgenerated by polluting emissions from large burning installations. The analytic hierarchy process (AHP) method was used inorder to express quantitatively how the environmental protection and sustainable development objectives are met. Based onexperimental determinations carried out on site at Mintia Power Station, Romania and the brainstorming sessions held ...
Autori: Dan Codruț Petrilean
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26398

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

AbstractThe study on the kinetics of reactive extraction of rosmarinic acid with two extractants, Amberlite LA-2 and D2EHPA,underlined the strong influence of extractant type, solvent polarity, and 1-octanol content on the relative magnitude of thediffusional or kinetic resistances and on the interfacial reaction rate. Thus, indifferent of the extractant type, the highest values ofinterfacial mass flows and reaction rates have been reached for extraction in dichloromethane. The addition of 1-oct...
Autori: Mădălina Poştaru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26412

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

AbstractCarbon monoxide (CO) is a gas obtained both from natural sources (bush fires, volcanic emissions and electric discharges) andby anthropogenic processes (incomplete combustion of fossil fuels). Together with particulate matter, nitrogen oxides andhydrocarbons, it is part of the air pollutants associated with the transport sector, which have a negative impact on human health,animals and vegetation. In this paper the authors propose a methodology for assessing CO emissions from road traffic...
Autori: Gabriela Mitran
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26466

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

AbstractDesigning for flood risk is an important reference for hydroelectric project planning and design. In this paper, advancedchecking-point method (JC method), which is usually used to calculate structure reliability is introduced and used to analyze thedownstream design for flood risk, considering upper reservoirs’ influence; besides, the design for flood hydrograph is deducedfrom the typical flood hydrograph. So, JC method not only can consider the influence of upper reservoirs, but also c...
Autori: Lingzhi Huang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26485

AbstractA soot transducer based on the measurement of the electrical resistance value of the soot layer deposited on a finger structure wastested at different thermophoretic potentials. The soot, similar to that issued from the Diesel engines, in terms of particle numberand size distribution, was obtained by the incomplete burning of propane and subsequent dilution. The decrease of the resistancevalue in time was directly proportional with the temperature gradient. Thus a soot transducer is aime...
Autori: Doina Lutic
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26503

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

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

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

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

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

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

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

Abstract Toxic chemical nature of tannery wastewater makes it difficult to be treated by routine biological treatment processes. Microbes, already present in tannery wastewater can adapt to these conditions and degrade the organics in tannery wastewater. In the present contribution, three bacterial electrogenic strains, tolerant to tannery environment, were isolated from soil contaminated with tannery waste and named as BS1, BS2, and BS3. Tannery wastewater was treated with these pure and mi...
Autori: Abhilasha Singh Mathuriya
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26588

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

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

Abstract Co(II), Cd(II) and Rh(III) complexes with 2-(1H-1,2,4-triazol-3-yl)pyridine (Htzp) as ligand were synthesized and investigated. The neutral mononuclear complexes with a generic [M(tzp)n] structure have been prepared from Htzp and corresponding transition metals chlorides at 2:1 and 3:1, respectively molar ratios in H2O–EtOH. The resulted crystalline complexes were investigated through magnetic and molar conductivity measurements, elemental analysis, FT-IR, mass spectroscopy, t...
Autori: Petronela Horlescu
ISSN: 1
http://www.ecozone.ro/reviste.php?RID=26652

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 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 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 Cybernetic Transportation System (CTS) is a relatively new branch of the Intelligent Transportation System, which can provide flexible transportation services for university campuses, resorts, and industrial parks. The proposed simulation approach is suitable for a preliminary assessment of CTS-related environmental impact in real-world driving conditions. The model is built to allow performance prediction of a single cybercar or the whole CTS in a wide range of operational conditio...
Autori: Leonid Tartakovsky
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26737

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

Abstract In the context of biogas sustainability assessment, a promising way to reach greenhouse gases (GHG) reduction and fossil energy savings is the anaerobic digestion (AD) of both animal manure and energy crops. Nowadays, more than 1,100 AD plants are working in Italy, mostly located in Northern Regions. To those plants with an electrical power lower than 1 MW, strong public incentives were given, therefore, several of them have been put into operation; this entailed increasing cereal ...
Autori: Jacopo Bacenetti
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26771

Abstract The increasing diffusion of Hi-tech complex products has raised the attention of scientific community towards their End of Life (EoL) treatment, both in terms of assuring an appropriate disposal, to avoid the dispersion of harmful substances, and at the aim of their exploitation as valuable sources of raw materials. Within this study an integrated approach for waste electrical and electronic equipment (WEEE) end of life treatment is proposed based on the integration of hydrometallur...
Autori: Claudia Brunori
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26777

Abstract This paper investigates the role of collective organizations created by producers to comply with the WEEE Directive. There are limited case studies on these producer responsibility organizations (PROs) despite the crucial role that they play in Extended Producer Responsibility (EPR) schemes. An important aspect in order to evaluate the efficiency of these compliance schemes is the analysis of their internal costs including transaction costs. First of all, this research provides an u...
Autori: Marinella Favot
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26781

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

Abstract The amount of collected Waste Electrical and Electronic Equipment (WEEE) in Europe is growing about 7 wt.-% per year (2007- 2012). It contains a number of economically relevant base, precious and high-tech metals. However, only a limited number of these metals can be recovered by currently applied recycling processes. Especially high-tech metals like gallium, germanium and tantalum get lost during the treatment of WEEE. The pyrolysis technology allows an accumulation of these metals...
Autori: Peter Hense
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26785

Abstract Models are very important in the development of information systems for water management and they concern not only hydrology aspects, but also representations of complex software applications. Their conception requires big and orchestrated efforts of various stakeholders, like hydrologists, software and electrical engineers, emergency professionals, GIS specialists and ecologists. Water management blends multi-disciplinary aspects; therefore software analysis and design for this dom...
Autori: Anca Daniela Ionita
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26829

Abstract The aim of this paper is to assess the chemical and mineralogical composition and the leaching behavior of the electric arc furnace slags (EAFS) in order to improve their management by identifying suitable reuse options in different fields. The chemical and mineralogical composition of slag varies from one type of steel to another, from one technological stage to another and from one steel plant to another. In order to minimize the slag quantities disposed in the slag dumps one has ...
Autori: Dana-Adriana Iluţiu-Varvara
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26835

Abstract Drying wood requires a significant amount of energy. This includes both thermal energy, necessary to heat-up wood, evaporate the water inside it and cover the insulation and vent losses, as well as electric energy consumed to force air circulation through the stacks. When wood is frozen, both energy consumptions increase; on one hand because frozen water requires a supplementary heat for transformation into liquid and then into gaseous state, and on the other hand, because of the lo...
Autori: Maria Bernadett Szmutku
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26841

Abstract A large number of energy inefficient buildings were constructed without taking into account the principles of green building, which requires efficient utilization of local resources. In this work hemp and peat fibres were used in order to produce effective ecological thermal insulating material. Tests were carried out using short dishevelled hemp and chopped peat fibres. Effective composites from local renewable resources were produced. Macro- and microstructures of composites as we...
Autori: Rūta Stapulionienė
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26844

Abstract This article presents the result of investigation on the spatial and temporal changes in water quality of Uluabat Lake. It examines the relationship between water and sediment quality parameters, and assesses the factors affecting eutrophication. Water and sediment quality are examined at 8 stations in the lake between May 2008, and May 2009. Water and sediment quality parameters measured are T, pH, EC, SD, NH4-N, NO3-N, TN, PO4-P, TP. Also DO, alkalinity, hardness, SS, BOD, COD, Ch...
Autori: Feza Karaer
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26850

Abstract Isotopic composition and electrical conductivity (EC) of groundwater were analyzed to trace the source and transport of pathogenic microbes in shallow and deep groundwater wells over a depth range from 9 m to 75 m below land surface (bls). Stable isotopic composition was used for the identification of the source of water while environmental tritium contents were used to estimate the time elapsed since the recharge of the groundwater. The results revealed that drain water contaminate...
Autori: Anju Pant
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26851

Abstract Energy costs not included in consumer utility invoices include human health problems triggered by air pollution from burning fossil fuels, and environmental degradation caused by global warming, acid rain, and water pollution. Such costs, peripheral to energy pricing, are called externalities because electricity producers and users do not pay for them directly. Society as a whole must pay. This pricing system masks the true costs of fossil-based electricity generation plants, result...
Autori: Hasan Karimzadegan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26862

Abstract To assess the pollutants input of acid mine drainage (AMD) and domestic activities in Aries River, the water was monitored monthly, during one year, in 15 sampling points along the River. The dissolved metals (Ca, Mg, Na, K, Fe, Cu, Zn, Mn), anions (SO42-, NO3- and Cl-), pH and electrical conductivity were analyzed. The obtained data were assessed against the water quality standards, Principal Component Analysis (PCA) and Hierarchical Cluster Analysis. The results revealed the water...
Autori: Erika Andrea Levei
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26881

Abstract In the European Union, the hazardous waste recycling has become a priority, as response at legal prohibition for landfilling of untreated WEEE. The economic and eco-efficient recycling methods acquire more and more interest from the industry. The Cathode Ray Tubes (CRT) glass derived from Waste of Electric and Electronic Equipment (WEEE) dismantle is known as hazardous waste, because of their heavy metals content, especially lead. For this type of waste, the authors have proposed in...
Autori: Antoanela Popovici
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26890

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

In the context of sustainable development, focus must be set on reasonable use of natural and energetic resources, which is a real must at present. Besides these, material and informational resources add up to give the full picture of sustainable development resources. The paper introduces a valid solution of powdery waste recycling into pellets for the steelmaking industry. The pellets are obtained from powdery wastes (steel plant dust, red sludge, lime dust, dolomite waste, waste limestone,...
Autori: Ana Virgina Socalici
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26944

One way to improve the performance of non-thermal plasma (NTP) reactor for volatile organic compound decomposition is by the introduction of ferroelectric materials into the discharge zone of NTP. This paper is a review of the breakthroughs and the current status of the applications of this technology for the abatement of volatile organic compounds (VOCs). It covers the process of energy generation in NTP, VOCs decomposition processes and the effects of critical factors such as type of packed...
Autori: Abdullahi Mohammed Evuti
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26948

Kistler Force Plate (FP) (model 9286AA) with the corresponding software Bioware (2812A1-3, Version: 3.2.6.104), along with other equipment: an audio system Hercules 5.1 70, a sound generator Agilent 33220 A and a sound meter Spark 706 were used for the research described in the present paper. The audio system was used to generate sounds at different frequencies; the sound generator verified the audio system and the sound meter were used to achieve a sound pressure level. The software contains...
Autori: Ionel Şerban
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26959

Waste recycling in steel industry by turning grain-size and powdery waste into pellets is a must now more than ever for economical motivation, in order to save raw materials and also for ecological reasons, as it leads to a cut down in the quantity of dumped waste. Industrial practice offers processors various technologies of waste recycling (agglomeration, briquetting, pelleting, mechanical mixture). The optimal variant should be chosen according to waste type, its content of useful elements...
Autori: Ana Virgina Socalici
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26968

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

In the present study, the effects of two methods for thermal sanitization of soil, by oven and by autoclave, and two non-ionizing radiation sterilization methods, UVC and microwave on pH, conductivity, dry weight, total number of germs and respiration of samples from neutral commercial soil were evaluated, using international standard methods. Also, the infrared and UV-VIS spectroscopy were applied for the determination of chemical properties and structural characterization of humic acid and ...
Autori: Dumitra Raducanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26985

In past ten years area of green technologies and materials was the most growing industry sector in the world. It is related with global warming, air pollution and energy saving. Building sector intensively increased air pollution and is related with high energy consumptions. The use of renewable or recyclable materials can reduce these problems. In current work, thermal insulating materials from hemp shives and corn starch were investigated. Structures of various shives fractions were analyz...
Autori: Giedrius Balčiūnas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26992

Treatment of domestic wastewater using constructed wetland system vegetated with Phragmites australis was studied at lab scale. Response surface methodology (RSM) a mathematical model was employed for analyzing the effect of independent factors (inlet flow rate, outlet flow rate, retention time) on wastewater parameters e.g. electrical conductivity, BOD5, COD, nitrates, phosphates, total solids, suspended solids, heavy metals in order to maximally treat wastewater. All independent variables w...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26999

Zirconia (ZrO2) as a ceramic biomaterial facilitates the osteoconductivity in new bone formation around implant. Surface characterization before and after electrochemical testing was performed used scanning electron microscopy (SEM). The electrochemical properties of the yttrium oxide stabilized zirconium oxide (YSZ) coated and uncoated MgCa sample with the open circuit potential at different immersion time in Ringer’s solution were studied by electrochemical impedance spectroscopy (EI...
Autori: Bogdan Istrate
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27021

In the current context, when studies regarding the planet’s ability to sustain the human species consumption present more and more grim scenarios, it is required, more than ever, to consider sustainable development as a main priority for development strategies worldwide. In this sense, reducing the negative environmental impact of building materials and lowering energy consumption in buildings exploitation becomes the main axis for most of the new tendencies in architecture and civil e...
Autori: Marian Pruteanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27040

The effects of reconnecting three oxbow lakes to the Słupia River (northern Poland) on the fish community were analysed on the background of environmental factors. The ecological effects of restoring the hydrological connectivity of the river-floodplain system (RFS) were analysed in an intermediate time span (from 2008 to 2012). Oxbow lakes that were cut off from their mother river were characterised by a low abundance and relatively low diversity (Shannon index, H’) but high speci...
Autori: Krystian Obolewski
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27055

This study proposes a modified fractional fuzzy simulation (MFFS) method to predict the toluene and oxygen concentrations in aquifers under microbial attenuation conditions. The method integrates the modeling of groundwater flow contaminant transport and fuzzy parameters analysis within a general framework. Compared to conventional fractional fuzzy simulation (FFS), decreased interior points of fuzzy parameters need to be used, thus reducing the simulation time. The method is applied to an a...
Autori: Li He
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27106

The green products market is growing up fast, but there is still a strong need to provide clear and verified information about their environmental performances in order to create a real consuming preference. The main preliminary results of a market survey conducted in Romania in 2010-2013 within the LIFE+ project -Promoting green products, aimed at evaluating the availability of eco-labeled products and at promoting their use, are presented in this paper. A national Green Register of type I e...
Autori: Antonina Temea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27114

Microbial Fuel Cells (MFCs), the bioelectrochemical devices for conversion of waste into electricity through bacterial metabolic activity can use substrates with different complexity and strength. Wastewaters with moderate to high organic content can be exploited as MFC substrates. In this study, four different industrial wastewaters (from a chemical company, milk industry, soyabased food and soft-drink company and laundry) with different compositions were used as substrates in identical MFCs...
Autori: Deepak Pant
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27117

In Palestine, the energy situation is unique compared to other Middle Eastern Countries, as there are technical and political challenges for transporting, storing, importing and exporting energy. Actually, energy import from Israel meets the major share of Palestinian energy needs. Palestinian reliance on Israel concerning its energy supply is an issue due to the political situation. Furthermore, from an environmental point of view, Israel predominantly relies on fossil fuels for its own elec...
Autori: Jacopo Bacenetti
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27120

Microbial fuel cells (MFCs) are bioelectrochemical reactors that directly convert the chemical energy stored in chemical bonds of organic substrates, to electrical energy. Saccharomyces cerevisiae was implemented as biocatalyst in the anaerobic anode compartment of an MFC using glucose as carbon source and methylene blue as electron mediator. Our results showed the effect of methylene blue on the microbial metabolism and the reversibility of the redox reaction of the shuttle mediator in the p...
Autori: Ruggero Rossi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27131

The effectiveness of thermal insulation materials mostly depends on their thermal conductivity. The low thermal conductivity is predetermined by density, structure, moisture content and temperature of material and, considerably less, by other indices. Loosefill cellulose insulation is allocated to the group of materials, the density of which fluctuates within large limits. This property is related not only to application of cellulose wool in different constructions, but also to technological ...
Autori: Sigitas Vėjelis
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27165

In this paper we applied multi-criteria methods of decision in order to establish the best encapsulation material to be used in producing photovoltaic modules. The encapsulation materials play an important role in establishing the PV module performance, especially if referring to their ability to increase their life time. For our study, we have considered the most widely used encapsulation materials available on the market, such as Ethylene-Vinyl Acetate (EVA), Polyvinyl Butyral (PVB), Thermo...
Autori: Gabriela Demian
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27169

In this study, a mathematical model was introduced to calculate the collection efficiency of dust particles in a wire-pipe single-stage electrostatic precipitator (ESP). The aerodynamic diameters of these particles are less than 10 μm (PM10). The mathematical model, using combined Deutsch-Anderson Equation, considers coupling effects among gas flow field, electric field and particle field. A simplified 2-D ESP model was established using GAMBIT and a software application (FLUENT) was used to ...
Autori: Jian-Ping Zhang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27172

The need for ensuring safety of energy supply, as well as the tendency to reduce greenhouse gas emissions has led to greater use of energy efficient technologies and renewable energy sources. Cogeneration (combined production of heat and electricity) is one of high-efficiency technologies, because the losses of primary energy are less than losses from the separate generation of heat and power. Consequently, in 27 EU member-states 70% of the district heating is based on cogeneration plants. Us...
Autori: Vladimir Vukašinović
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27177

Rural areas near Pucallpa City in the Peruvian Amazon have no access to electricity. Fuelwood is the main source of energy and is used for open-fire cooking, which is generally considered as less efficient cooking method. The performance of two improved cookstoves (Ceramic Stove - CS and Rocket Stove – RS) has been compared with the traditional open-fire three-stone cooking method locally recognized as Traditional Cocina (TC). The CS and RS were constructed by the indigenous tribe of Shipi...
Autori: Iva Kucerova
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27178

Safe utilization of fly ash (FA) and reclamation of sodic soils are important environmental problems. In this study a field experiment was carried out with Vigna radiata L. crop using fly ash (FA) and phosphogypsum (PGY) as amendments in sodic soil during 2011 at Lucknow, Uttar Pradesh, India. V. radiata L. was sown in sodic soil amended with press mud (10 t ha-1) considered as control. Besides, 10 and 20 t ha-1 doses of FA and PGY were considered as other four treatments, respectively. The grow...
Autori: Kripal Singh
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27180

There has been a growing amount of work on microbial fuel cells (MFCs) in the last years, both on the microbiological issues and on the engineering ones, which managed to increase power outputs by an order of magnitude. However, they are technically still far from attaining acceptable levels of power output. Therefore, it is necessary to go deeper in understanding the mechanisms involved in electricity production with MFCs and use this new knowledge to achieve significant increases in power outp...
Autori: Vânia Oliveira
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27187

A natural Cretaceous sodium (Na) bentonite from North Patagonia, Argentine, is considered a potential construction material for landfill liners. It is studied alone and in mixtures with sand. Physical and chemical properties of the Na-bentonite were determined to verify the suitability of this material for the construction of low permeability mineral liners. Hydraulic conductivity measurements were conducted on pure bentonite and on mixtures of poorly graded sand with 3, 6, 9 and 12% of Na-bento...
Autori: Telma Belén Musso
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27190

This special issue of Environmental Engineering and Management Journal is a natural continuation of our previous endeavors to bridge two important domains: Electromagnetic Compatibility (EMC) and Engineering in Medicine and Biology (EMB). The approached theme also constitutes the subject of the “International Workshop in EMC and EMB”, organized as part of the “International Conference and Exposition on Electrical and Power Engineering – EPE” at the Faculty of Electr...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27195

Following the current trend in fossil energy saving, emphasized both by sustainable economy principles and by environmental protection constraints, the electrical equipment producers are in competition for delivering high efficiency products on the global market. The fabrication of electrical motors is already regulated through efficiency product standards; complying with them represents a continuous tough challenge for manufacturers. The paper outlines the normative frame for developing energy ...
Autori: Cristina Mihaela Gheorghe
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27197

In this paper new techniques for the analysis and improvement of the transfer function of a low-pass filter made in planar electromagnetic technology are proposed. The low pass filter is a fundamental element of the filter used for conduction electromagnetic interferences suppression. For this purpose, in order to determine the filter’s transfer function, 3D electromagnetic CAE (Computer Aided Engineering) are coupled with simulation software programs which use equivalent electric circ...
Autori: Adina Racasan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27198

This paper presents an advanced numerical algorithm for the optimization of the current density distribution in electrochemical applications. The optimization principle consists in the distortion of the electric field by an insulating shield properly positioned between the electrodes. Such a distortion influences the distribution of current density at the electrodes under consideration. The electrochemical problem is approached by a Laplace equation which is numerically solved using a mesh-free ...
Autori: Alexandru Avram
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27199

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

The radiofrequency (RF) electromagnetic fields represent one of the most common and fast growing environmental influences, raising concerns about possible effects on human health. The fact that there is a continuous change and an emergence of RF communication technologies on the market also leads to a change of daily RF exposure levels for the general public. In such a context, the main objective of our study is to assess the RF exposure originating from the emerging Worldwide Interoperability f...
Autori: Eduard Lunca
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27215

The electrochemical disinfection of effluents from poultry waste anaerobic digestion was investigated. The influences of electric current densities, electrolyte species and dosages, effluent turbidity and concentrations on the bacterial inactivation were determined. The efficiency of inactivating bacteria in the effluents by electrochemical treatment increased with increasing the electric current density and electrolyte dosages. Treatment with the addition of HCl as electrolytes resulted in the ...
Autori: Mengzi Wang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27252

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

Water quality index is an essential tool for water quality assessment. Considering the frequent use of automated water quality monitoring systems, their importance in generating data and information for the efficient management of water treatment plants, the design of such an index would allow the detection of point-pollution episodes, which otherwise would occur undetected and would have a significant impact on the water quality and its further treatment. In this study, a versatile weighted wat...
Autori: Ioana Gabriela Dascalescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27271

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

The propagation of electromagnetic radiation was investigated at different points, and the theory of covariance was applied to identify the main parameters by recording the max, mean and min values of density. The biggest electric field strength values are emitted by the second generation (2G) GSM mobile phones that operate in the frequency band of 900 MHz. The smaller electric field strength values are determined by the higher frequency (1800 MHz) used by mobile phones and smaller maximum power...
Autori: Raimondas Buckus
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27314

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

The composition and the structure of the soil matrix have an important role in determining the water and the air regime into the soil. In the soil pore the area occupied by water and air, capillary and adsorption phenomena occur, together defining the suction of the matrix. The suction-humidity relationship varies from one soil to another, but also to the same soil in time. This paper sets out the results of investigations aimed at highlighting the influence of the composition and structure of...
Autori: Florian Stătescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27332

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

In quarries, hard rock blasting is done effectively using explosives for civil use. Perhaps, the most used technical solution for decreasing the seismic effects due to blasting is sequential blasting in front of the quarry. This technical solution involves the use of proper means of initiating explosives, which have to meet certain characteristics able of leading to the achievement of the intended purpose. This paper describes one of the methods of verification and the testing results for non-el...
Autori: Edward Gheorghiosu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27354

Areas within which could arise explosive atmospheres having high concentrations, therefore requiring special precautions so as to guard the health and safety of concerned employees, are considered to be dangerous. If the electrical equipment used in these hazardous locations is not properly selected and installed for operating in explosive atmospheres, they are likely to generate an ignition and to result in explosion type events with significant environmental and material damages and, moreover...
Autori: Vlad Mihai Păsculescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27360

The main objective of this study was to investigate the potential utilization of polyethylene terephthalate PET waste in cementitious matrix, as substituent to cement, to develop lightweight construction materials and for preventing chemical attacks or repairing various reinforced concrete structures. Composites containing different amounts of PET particles, as partial replacement to cement by weight, were characterized by destructive and non-destructive testing. So, the thermal conductivity, ul...
Autori: Ahmed Soufiane Benosman
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27381

This work presents an experimental analysis of the influence of a monocrystalline photovoltaic (PV) panels’ temperature on its main operating parameters. Victron Energy, SPM 30-12 PV panel is tested, using a double climatic chamber. The PV panel is placed as a barrier between the two rooms of the climatic chamber. The study is focused on the establishing the effect of raising temperature of PV panel over electrical parameters: voltage, current and power produced and also over the effici...
Autori: Sebastian Valeriu Hudisteanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27397

This research was focused on the valorization of agro industrial waste/by products available in the local industry with the kilometer zero (km 0) concept, as a replacement of virgin raw materials (clay) to elaborate lightweight aggregates (LWAS). The alternative raw materials were employed as pore forming agent, in order to reduce sintering temperature and energy consumption of the furnace. The three technical nutrients studied were provided for local food industries: sludge from wastewater trea...
Autori: Romina D. Farias
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27405

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

Biofuels and biochemicals are currently centre stage in the on-going scientific and political debate. The prevalent opinion is that their use can significantly reduce the greenhouse gases (GHGs) emissions and primary energy demand along their whole value chain. This study aims at evaluating the environmental impact in terms of GHGs related to carbon dioxide (CO2) of secondgeneration sugars (2GSs) production from cardoon residual biomass. Cardoon is a favourable crop in Mediterranean areas for...
Autori: Maria Teresa Petrone
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27413

A worldwide trend is leading the international community to explore the possible paths for the transition from a linear to a circular economic model. Recent studies identified the main enabling factors to facilitate this transition, among which closed loop logistics models and new service-based and function-oriented business models play a significant role. The diffusion of new business models relating to the use of a product rather than its ownership can indeed reduce material consumption and th...
Autori: Maria Grazia Gnoni
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27418

Decolorization of C.I. Acid Orange 7 (AO7) via TiO2-assisted photocatalysis under UV illumination in the presence of H2O2 has been investigated. The effect of pH on decolorization efficiency of AO7 was investigated in TiO2/UV/H2O2 process. The performance of TiO2/UV/H2O2 system was also evaluated by using synthetic dye-bath effluent of AO7. Solar driven TiO2 photocatalysis was found significantly efficient for the decolorization and degradation of AO7. The rates of decolorization and degrada...
Autori: Ozlem Esen Kartal
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27433

In many laboratories, offices and home rooms exists devices and equipment working in the radio frequency (RF) and microwave (MW) bands. People working with these equipments may be exposed to electromagnetic fields of high density that can produce adverse effects on human health. It is suitable to perform measurements on the scattered fields, especially in the near-field regions (Fresnel’ radiating and reactive regions), where the incident power density can reach dangerous levels for occ...
Autori: Sorin-Bogdan Balmus
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27466

A series of column experiments were conducted to study volatile contaminant (benzene) removal and process principles using soil vapor extraction (SVE) under different thermal conditions. Compared with the normal SVE method, two thermal methodssteam injection and electrical resistance heating effectively increased the benzene vapor diffusion and removal rates. The removal efficiency of benzene with the electrical resistance heating method was 96.5%, which was significantly higher than that with t...
Autori: Peng Li
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27534

The tenacious technological development at latter decades has conditioned the growth of electrical and electronic equipment (EEE) amount and generation of their waste. That is a global heterogeneous problem including different stakeholders and various aspects: environmental, economic, social and technological. The regional electrical and electronic waste (WEEE) management systems (MS) are developed in order to solve this problem. The implementation of WEEE recycling and collection targets is not...
Autori: Inga Gurauskienė
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27537

Reduction of environmental pollution in general, and emissions of greenhouse gases in particular, remain priorities for the sustainable development of human society. The strategies applied for designing industrial manufacturing processes were radically changed; nowadays the focus is mainly on the efficient use of energy sources. This means that at this moment there is a huge demand for innovative environmentally friendly technologies, for various industrial processing sectors. Electromagnetic fo...
Autori: Dorin Luca
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27539

A project called ’Cleaner Production’ is conducted in the organization of the Cleaner Production Centre of Serbia at the Faculty of Technology and Metallurgy, University of Belgrade and the United Nations Industrial Development Organization (UNIDO). The goal of the project is to perceive critical places in a company and define measures which would achieve significant financial savings and, at the same time, protect and improve the condition of the environment with minimal investment...
Autori: Snezana Urosevic
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27541

Dielectric measurements were carried out on a series of bent-core liquid crystals based on resorcinol and 2, 7-dihydroxinaphtalene cores and presenting B mesophase in between 30-160°C. The dielectric constants in the liquid crystalline phase were measured as a function of frequency and temperature. The dielectric relaxation of bent-core compounds has been analyzed by dielectric constants/frequency curves. The variation of the dielectric strength with temperature has been determined as well. ...
Autori: Irina Carlescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27568

• Environmental engineering and Management Journal No. 4    • AN ENHANCED ENVIRONMENTAL MULTIMEDIA MODELLING SYSTEM (FEMMS): PART II – USER INTERFACE AND FIELD VALIDATION    • COST-EFFECTIVENESS OF OPTIMIZING CONCENTRATED FEED BLENDS TO DECREASE GREENHOUSE GAS EMISSIONS    • FATE AND BIODEGRADATION OF ESTROGENS IN THE ENVIRONMENT AND ENGINEERING SYSTEMS – A REVIEW    • ANALYSIS OF THE MATERIAL COMPOSITION OF MIXED MUN...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27577

• Environmental engineering and Management Journal No. 4    • AN ENHANCED ENVIRONMENTAL MULTIMEDIA MODELLING SYSTEM (FEMMS): PART II – USER INTERFACE AND FIELD VALIDATION    • COST-EFFECTIVENESS OF OPTIMIZING CONCENTRATED FEED BLENDS TO DECREASE GREENHOUSE GAS EMISSIONS    • FATE AND BIODEGRADATION OF ESTROGENS IN THE ENVIRONMENT AND ENGINEERING SYSTEMS – A REVIEW    • ANALYSIS OF THE MATERIAL COMPOSITION OF MIXED MUN...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27576

This study evaluates the behavior of freeze concentration of cheese whey (CW). Parameters studied were: Chemical Oxygen Demand (COD), Total Dissolved Solids (TDS), Suspended Solids (SS), Total Settleable Solids (TSS), pH and electrical conductivity (EC) in the concentrated cheese whey and in the ice. The final concentration of TDS reached was 25 ± 0.16 %wt for the liquid phase, which corresponds to a reduction of 83% of the initial volume. The COD in the ice fractions had lower values tha...
Autori: Freddy Belén
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27613

While trying to reduce the air pollution caused by traditional traffic means like planes and conventional cars, new concepts of car sharing (either conventional or electric) emerged. Although many such concepts are daring and innovative, they're not implemented on a large enough scale; to help reducing air pollution, the acceptance (and hence implementation) of these concepts needs to systematically increase. This paper introduces a design methodology for such a concept - based on competitiv...
Autori: Laszlo Bartha
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27632

A new methodology is presented for relating the generation and/or the consumption of heat and electrical energy to the rate of CO2, NO2, and SO2 emissions to the environment. Two indices are provided for the precise determination of emissions of these gases to the atmosphere and are of help in the analysis and comparison of the quality and efficiency of energy options. The indices have no linear dependency on energy consumptions (unlike EIA and EPA methodologies) and can be applied to any indust...
Autori: Mohammad Hossein Ordouei
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27640

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

In this work, PM2.5 removal mechanism was explored to investigate PM2.5 collection efficiency under the influences of applied magnetic field and diffusion charging (the main charging mode for submicron particle). The proposed electrostatic precipitators (ESPs) mathematical model considered three-field interaction between fluid field, electromagnetic field and particle dynamic field. CFD software FLUENT was used to generate the simplified solid structure of the ESP. In numerical calculation, t...
Autori: Jian-Ping Zhang
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27667

The objective of the present study was to (i) compare different treatment options for greywater (GW) reuse, (ii) assess the potential of treated GW for reuse, and (iii) select the optimal treatment option by using Analytic Hierarchy Process (AHP). Raw GW was settled for 2 h. Five different treatment options were investigated simultaneously in parallel using the same influent (settled GW). The treatment options were (1) sand filtration, (2) sand/brick bat filtration, (3) alum coagulation/floc...
Autori: Dilip Machindra Ghaitidak
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27669

In this study, we consider a potential Finnish solution to sustainable energy production to satisfy the European Union's forestrelated energy policies related to climate change. Conventional energy production includes a number of fossil fuel, peat, and renewable fuel procurement chains that supply a combined heat and power (CHP) plant during different periods of the year. In Finland, peat is commonly used as fuel by energy plants. However, it is not environmentally friendly because it is ...
Autori: Teijo Sakari Palander
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27672

The performance of cathode affects the overall performance of a microbial fuel cell (MFC), and cathode configuration affects the fabrication cost of this bioelectrochemical system in a large way. Various modifications in cathode structures have been observed in MFCs. Among them air-cathode MFCs are considered to be the most efficient and sustainable option due to elimination of aeration, as required in aqueous cathodes which consumes energy and increases operating cost of MFCs. An air cathode us...
Autori: Pritha Chatterjee
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27680

The article presents a study on indirect environment-related effects of electric car vehicles use. Although electric vehicles are considered zero emission vehicles, their use may be linked to indirect pollution of environment caused by energy sources used for electricity production and also other sources of pollution such as poor recycling procedures. A computer simulation was performed to determine the energy consumption of electric vehicles available on the Romanian car market. The values obta...
Autori: Bogdan Ovidiu Varga
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27686

Bottled water (commonly called mineral) makes an important source of minerals for humans. Its consumption has been systematically rising in the highly industrialized countries, even though not every water type has appropriate health properties. As a result, drinking bottled water ought to be supported with understanding its qualities and physicochemical content. The following article presents the results of the research into pH levels, electrical conductivity, selected inorganic anions (F-, Cl-...
Autori: Rajmund Michalski
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27693

A judicious use of energy is a fundamental factor to achieve sustainable development. The limited character of energetic fossil resources and the pollution generated by burning fossil fuels for electricity production generate the need to replace them with other sources of energy. Despite the fact that fossil fuels would continue to play a prevailing role in the energy supply for decades to come, renewable energy resources have the potential of contributing to the increasing global energy demands...
Autori: Tiberiu Rusu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27700

The objective of this paper is to measure magnetic flux density and electric field intensity due to selected power substations in the city of Tehran to evaluate the difference between the measured parameters and threshold levels specified in relevant standards. Hence, three types of power substations of 63, 230 and 400 kV were randomly selected. Based on confidence level of 95% (α =0.05), 250 measurements were made at various distances from power substations. It is found that the results o...
Autori: Parvin Nassiri
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27762

This paper investigated the compressive strength and thermal conductivity of water and air cured Portland cement-fly ash-silica fume mortars. The results showed that density, compressive strength and thermal conductivity of blended cement mortars with fly ash were lower than Portland cement control. However, blended cement mortars that contained silica fume as replacement cement both in binary and ternary phase were higher than fly ash mixes and tends to increase with increase silica fume used a...
Autori: Chalermphan Narattha
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27731

Evaluation of spatial/ temporal water quality data at reservoirs has shown differences after the dam construction as well as long-term changes of water chemistry. One of the most recent reservoirs created in Europe is Ilarion Reservoir in Western Macedonia – Greece (2012). In this work, the water physicochemical characteristics of this young reservoir and the spatiotemporal water quality variation of the feeding river and its main tributaries have been studied, and statistically interprete...
Autori: Elisavet Amanatidou
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27737

Monitoring of air emission and pollution control cost is a key to improve air quality management of electricity generation industry. This research comprehensively evaluates abatement cost of sulfur dioxide (SO2), nitrogen oxides (NOx), emission intensity and emission inventory of sulfur dioxide (SO2), nitrogen oxides (NOx), particulate matter (PM), and carbon dioxide (CO2) emitted from Thailand’s fossil fuel power plants. The research applied bottom-up approach with continuously monitored ...
Autori: Wasin Pinprateep
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27740

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

An innovative strategy significantly increasing data density by introducing a flexible, problem-orientated, and cost-effective water quality monitoring approach is presented. Most current monitoring strategies produce water quality data based on fixed stations conducted on fixed dates throughout a defined period of time and, thus, often give a biased and insufficient picture of the water quality. Establishing a refined picture of water quality while not increasing monitoring costs clearly needs ...
Autori: Wiebke Warner
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27805

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

Greywater reuse is widely accepted as a suitable response to the increasing demand of fresh water in urban areas. On the other hand, strict environmental regulations have obligated the development and implementation of membrane separation technologies for production of municipal potable water, in industrial water supply and in wastewater treatment. Potential energy crisis in the future has highlighted the importance of using renewable source of energy for membrane separation processes. This r...
Autori: Mohammad Ramezanianpour
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27889

Sand contamination is an important factor when assessing the health hazard potential of public beaches. The goals of this study are to assess the performance of four sand washing procedures on the removal of surface adsorbed chemical species, and to identify which chemical components are best suited for monitoring the health quality of beach sand. Four washing treatments were investigated: contact, stirring, sonication, and boiling. Sand samples were collected from three Portuguese beaches an...
Autori: Mário Dias Almeida
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27890

This paper presents the results of theoretical estimations of the quantity of landfill gas (LFG), as well as the energy potential of Cell A from the municipal landfill in Oradea city, Romania, based on a mathematical model. Considering three scenarios for LFG recovery according to the capture system efficiency, the following LFG theoretical flows have been obtained: 157 m3LFG/h for 45% recovery efficiency; 209 m3LFG/h for 60% recovery efficiency; and 297 for 85% recovery efficiency, respectiv...
Autori: Gerardo Collaguazo
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27903

Electrically charged particles of air pollutants show the degree of atmospheric pollution they being consistent with some chemical indicators of air pollution. This study analyses these indicators of atmospheric pollution (EIAP) present in various zones around the cities of Iasi, Bacau and Piatra Neamt and correlate them with the incidence of some diseases amongst the population. The results show that certain values of electrical indicators of atmospheric pollution point to a higher incidence...
Autori: Liliana Sachelarie
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27916

Drinking water treatment aims to avoid or minimize some risks to human health and to provide adequate water quality by removing physical, chemical and biological contaminants. However, treatment processes require increasing efforts in terms of technology, chemicals and energy inputs, which generate increased secondary environmental impacts and added water production costs. The objective of this study is to evaluate the drinking water treatment plant (DWTP) in Iasi City (Romania) by life cycle...
Autori: George Barjoveanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27922

We assessed the variability of the main physico-chemical parameters of drinking water: oxidability, turbidity, conductivity, water hardness, free chlorine concentration, chlorides and nitrates across the four seasons (Spring, Summer, Autumn of 2013 and Winter of 2014). We collected data from several points in the supply network of Satu Mare city, NW of Romania, where the source of drinking water is groundwater. The results revealed significant higher average values in spring for some of the ...
Autori: Thomas Dippong
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27928

The theoretical and computational studies of dye sensitized solar cells (DSSCs) can contribute to a deeper understanding of these types of solar cells. The DSSCs are the novel design of solar cells which could be used as power producing windows or skylights. They represent a particular promising approach to a direct conversion of sunlight into electrical energy at low cost and with high efficiency. The light adsorption occurs in dye molecules adsorbed on a highly porous structure of TiO2 film...
Autori: Nnditshedzeni Eric Maluta
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27932

Yizhang, located in south of Hunan province of China is rich in geothermal resources. This paper aimed to study the concentrations of cations, e.g., K+, Ca2+, Na+, Mg2+ and conducted the analysis of the environmental isotope characteristics of δD, δ18O and 13C. Further there are explained the rules of the generation and evolution of geothermal groundwater in Yizhang. The temperature of geothermal groundwater in Yizhang was between 34.2 and 45.4 °C, with a neutral pH and a high...
Autori: Junjie Ba
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27944

The purpose of this paper is to present the tests carried out on cable entries with a flameproof enclosure protection type used in potentially explosive atmospheres. Assessment of explosion-protected electrical equipment is accomplished through tests carried out in accordance with the standard SR EN 60079-0, which includes all general requirements for explosion-protected electrical equipment. The requirements of this standard are supplemented with those for each type of protection in separat...
Autori: Dragoş Fotău
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27952

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

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

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

With the rapid development of electric vehicles (EV), more and more EV batteries will intensively face the retirement. If they are treated improperly, EV batteries might pose a serious threat to human health and environment. Therefore, recycling spent EV battery is full of significance. However, the recycling system and specific policies have not be well established in China. This paper aims to evaluate several recycling subsidy policies being considered and tested in China for their influenc...
Autori: Xin Li
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28002

Clinoptilolite (Clin), the most widely used natural zeolite in environmental applications, was used as soil additive to investigate its effectiveness in protecting and improving the quality of soils that received surface disposal of OMW, as well as in limiting nutrients leaching from the degraded soils. Clin was added in a batch experiment of 18 months, where OMW were added in evaporation ponds and on soil for a period of more than 12 years. The zeolite was added as dust (particle diameter &l...
Autori: Maria K. Doula
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28018

The limited availability of fossil fuels, as well as the already proven effects of global warming, highlight the need for alternative, environmentally-friendly energy generation. Consideration of primary energy inputs from new and renewable energy resources and technologies represent a major scientific challenge, and a major innovation if realized. This will open up new opportunities for benefit and realized value, in the form of lower costs of energy supply, through the utilization of indige...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28027

Inorganic thermal insulators are commonly used to improve energy efficiency. However, environmental and health aspects of their production until the end of life have been increasingly concerned. Agricultural wastes including rice straw, rice husk and corn cobs are abundant in Thailand and converted into value-added products such as thermal insulation materials offers a viable recycling opportunity as the ecological burden of a product has now become a widely-discussed issue. In this paper, gl...
Autori: Phairat Usubharatana
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28033

The environmental and economic impacts posed by waste electrical and electronic equipment (WEEE) make an effective collection and recycling scheme necessary for developing countries. Currently, developing countries in the Asia-Pacific regions are highly variable in terms of their present state of WEEE management, due to different economic conditions and levels of management. In this paper, we surveyed existing WEEE collection and recycling system in three Asia-Pacific developing countries &nd...
Autori: Yuan Chen
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28034

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

The influence of 50 Hz sinusoidal magnetic field on physico-chemical properties of water was studied. Tanks with distilled water (120 mL) were individually exposed to action of homogenous 50 Hz magnetic fields, using a Helmholtz coils system. For magnetically exposure have been used different values of magnetic flux density (between 1 and 5 mT) and different durations of exposure (between 5 and 240 minutes). By means of this experimental study the physico-chemical properties of exposed water sam...
Autori: Mihaela Răcuciu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28061

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

Salinization occurs in natural conditions as a result of a complex of factors such as climate, topography, and hydrogeology. Salinity principally occurs in sub-humid to arid regions but secondary salinization is a consequence of direct human activities it extends by the day. In the field, soil salinity is deduced from apparent electrical conductivity (ECa) by using a range of devices. Although a number of proximal sensors have recently been used worldwide to simplify fieldwork, few studies using...
Autori: Mihai Buta
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28069

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

The goal 12 of the 2030 Agenda for Sustainable Development takes into consideration the responsible consumption and production in the perspective of circular economy. The agri-food sector is more actively involved in these initiatives, because it offers the possibility to exploit waste and by-products, by adopting suitable biotechnologies. Such processes can be carried out either under aerobic conditions, for the production of compost, or anaerobically, for the production of biogas. In this work...
Autori: Veronica Novelli
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28078

The increase of population and the bad management of municipal solid waste (MSW) lead to a spectacular increase of the landfill leachates volume. These effluents represent a very harmful threat that can affect the environment and the ecosystems, their control and treatment became the first occupation of the authorities. In this context, this study contributes to characterize the landfill leachate composition and how its changes over different seasons. The results have shown an intermediate leac...
Autori: Soukayna Rhouat
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28100

This manuscript presents the bicriteria optimization of a polygeneration system to be installed in a tertiary sector building, considering economic and environmental objective functions. Electricity, hot water, steam, and cooling demands were considered. The bicriteria problem considered the annual costs and the annual carbon footprint. Updated environmental information was obtained through the application of the Life Cycle Assessment methodology and implemented within a Mixed Integer Linear Pr...
Autori: Bruno Campos Teixeira de Carvalho
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28103

In this study we present time-related 3D ERI models for a site that was contaminated using waste automobile engine oil. The pristine geo-electrical characteristics of the site were recorded before the contamination was carried out. The purpose of the study was to progressively monitor the geo-electrical responses of the site for possible natural bio-transformations on the waste oil. Data were acquired once every two weeks for a period of three months using eight parallel 2D resistivity profiles....
Autori: Bokani Nthaba
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28118

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Autori: Florin Andrei Rusu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28143

There are considerable environmental and health and safety concerns regarding liquid crystal display (LCD) waste glass because of the waste electrical and electronic equipment (e-waste) that is deposited in landfills. In current study, the effect of variation in LCD waste glass on the deconvoluted fractions of silicon centers of metakaolin geopolymers has been comprehensively investigated to discover the underlying mechanisms governing the performance. Solid/liquid ratio affects the kinetics of ...
Autori: Kang-Wei Lo
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28146

The efficiency of drainage installed in clay soils using ditch backfill of soil mixed with lime is presented in this paper. The drainage ditch backfill was mixed with lime where 0.6% of soil matter consists of active CaO. The paper proposes a methodology that determines an optimal amount of lime. The experimental site was set in Kalnujai, Raseiniai district, Lithuania. The measurement of filtration in drainage trench, the arable layer and the soil between drains was performed using a double r...
Autori: Mindaugas KlimaĹĄauskas
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28177

Printed circuit boards are the most important component of any electrical and electronic device. The average metal content in waste printed circuit boards is ~30-35% whereas the rest of the material is a non-metal fraction (NMF). Metals in the waste printed circuit boards are recycled for their value whereas the NMF is mostly sent to landfills or incinerators for disposal. The circuit board laminates contain flame retardant chemicals that pose potential hazards to the environment and to public h...
Autori: Amit Dhir
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28216

Bad water quality has serious implications for human health, which may include gastrointestinal, liver, respiratory diseases and even cancer. In view of drinking water hardness in the study area, it was hypothesized that bad water quality has some association with the renal disorders. The possible association between nephrolithiasis, drinking water quality and diet in human subjects in district Abbottabad, Pakistan was investigated. Drinking water samples were collected from different areas (tot...
Autori: Suneela Jadoon
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28252

Growth of city population and migration of communities lead to higher accumulation of heavy metals in coastal areas of the Caspian Sea suburbs. In the present study there are represented geographical and ecological locations and environmental monitoring results of the Caspian Sea offshore and coastal area near Akshukyr (Aktau suburbs). The shallow offshore near Aktau city and adjacent areas were monitored in cooperation with the Institute of Ocean Sciences. Sea water analysis carried out specia...
Autori: Nurgul Janaliyeva
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28263

Based on the carbon dioxide emission-dependent market represented by the traditional energy, electricity, petroleum and chemical industries, this paper studies the optimal price and competitive decision in the duopoly competition market under the constraints of three carbon emission reduction policies: carbon cap, carbon cap-and-trade and carbon tax, and verifies the relevant conclusions through numerical analysis. The results show that because of the competition between the two oligarchic mark...
Autori: He Hua
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28272

Brominated flame retardants (BFRs) are used in different types of products such as plastic, textiles and electronic circuits with the aim to increase fire resistance and to avoid or to delay the propagation of accidental combustion. However, high concentrations of bromine in waste from electrical and electronic equipment (WEEE) hinder the possibility of their use as secondary raw materials. Furthermore, the possibility that BFRs can be released during mechanical recycling processes, imposes the...
Autori: Giuseppe Bonifazi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28296

Natural wastewater treatment systems can represent a smart solution in small communities (50-2000 Population Equivalent) as they are very low-cost technologies in terms of energy consumption and maintenance. Moreover, those systems could be implemented as clean processes for wastewater reuse in the frame of circular economy applications. In this context the present study examines the main features of Subsurface Flow System - horizontal (SFS-H) phyto-treatment process. To this aim a pilot plant w...
Autori: Carmine Fiorentino
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28297

A circular economy system will allow company to directly operate an effective re-cycling policy. Establishing a new “zero waste” impact scheme, in order to recover by-products from the production process, thus leading to an increased market price in comparison to their economic value, and by doing so with full respect of the blue and circular economy standards applied to the product. The main objective of the PVC upcycling project is to facilitate the transition of R.ED.EL.’s ...
Autori: Consuelo Nava
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28304

The work is devoted to the search and investigation of the properties of the effective environmentally friendly phytoremediation activators. An integrated approach was used to evaluate the effect of the compositions of thiosulfonates with rhamnolipid biosurfactant on remediation plants. The biochemical and biophysical analysis of the rapeseed and ryegrass plants grown in the oil polluted soil - photosynthetic pigments, indicators of oxidative reactions and electrical impedance characteristics we...
Autori: Olena Yaremkevych
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28319

Saline-sodic soil reclamation can be enhanced with a sustainable and environmental approach by using organic waste materials. Moreover, wastewater can be used in leaching processes to protect freshwater resources in regions with water shortages. The aim of this study was to reclaim saline-sodic soil by using recycled wastewater and stabilized sewage sludge together with gypsum. The experiment was designed with three replicates using four different sewage sludge doses (0, 4, 8 and 12 kg m-2), an...
Autori: Almujtaba Hassbalrassol Muhammed Abdallh
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28330

In this paper, seawater heavy metal concentrations (Al, As, Cu, Ba, Zn, Fe, Cd, Co, Cr, Pb, Mn, Mo and Ni) measured by ICP-OES and water quality parameters (NH4-N, NO3-, N, NO3, PO4-P, PO4-3, suspended solids, temperature, conductivity, pH and dissolved oxygen) were evaluated in Izmit Bay (The Marmara Sea). The study was carried out seasonally between December 2016 and September 2017 at four separate sampling stations. The mean concentrations of heavy metals in mg L-1 were: Al: 0.074, As: 0.020...
Autori: Arzu Morkoyunlu Yuce
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28333

The paper analyses the Romanian consumer’s behavior concerning the use of electric scooters for transport. The aim of the study is to investigate Romanian youths’ intentions regarding the use of electric scooters in the development of a sustainable behavior. The present article is based on a quantitative research, coordinated by the authors, conducted among young participants from Romania. A questionnaire was created using a set of items measured on a five-point Likert scale, on the...
Autori: Ana-Maria Ionescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28338

Water treatment has been extensively studied; however, only a few studies have considered it in isolated sites that do not have electric supply, which is a major inconvenience for inhabitants of rural areas. In this paper, the aim was to develop and implement a photovoltaic generator (PVG) that powers a pumping system, and water treatment with ozone. First, the PVG panel’s orientation was optimized using response surface modelling to identify the optimum operating orientation angles. Then,...
Autori: Mohammed Nadjib Brahami
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28341