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Rezultatele pentru monte carlo simulationRezultate gasite: 184
Environmental Engineering and Management Journal, Vol. 1 Nr. 4
Environmental Engineering and Management Journal › Vol. 1 › Nr. 4 Contain all the articles from this issue:ICEEM/01 -- Environmental Management Section Corporate environmental competence: A concept for characterising and assessing the environmental practice in companies and product chainsMichael S?žgaard J?žrgensen, Marianne Forman Life cycle assessment of some alternatives for the supply of thermal energy in the municipality of Iasi (Romania).Nicolae Peiu Management options for the industrial and municipal wastes in the city of Iasi Carmen Teod... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25169
Environmental Engineering and Management Journal, Vol. 2 Nr. 1
Environmental Engineering and Management Journal › Vol. 2 › Nr. 1 Contain all the articles from this issueEnvironmental analysis by capillary electrophoresis. Atmospheric samplesCamelia Draghici, Gheorghe Coman, Mihaela Sica,Dana Perniu, Mihaela Badea The ecological farms - A solution for sustainable agriculture. II. Position and perspectives of the ecofarms in the frame of the productive agricultural system Stela Axinte, Alina Stanciu, Lorica Axinte The extraction and clean up of organochlorine pesticides and PCB's from water using solid phase ex... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25170
Environmental Engineering and Management Journal, Vol. 3 Nr. 2
Environmental Engineering and Management Journal › Vol. 3 › Nr. 2 Contain all the articles from this issueCatalysis for heterogeneous photocatalysis. Part II. Methods for synthesisAnca Florentina Caliman, Ion BalasanianpH influence on sonochemical degradation of cyanides with H2O2 and O2Ioan Iordache, Mircea Teodor Nechita, Nicolae Aelenei, Gabriela Apostolescu, Ioan Rosca Studies of various wastewater nitrification bioreactor types based on modelling and simulationDiana Lupasteanu, Florina Ungureanu, Maria Gavrilescu Wastewater from winemaking industry: monit... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25175
Environmental Engineering and Management Journal, Vol. 3 Nr. 4
Environmental Engineering and Management Journal › Vol. 3 › Nr. 4 Contain all the articles from this issueICEEM /02 PLENARY SESSION:"Environmental Engineering and Management in the Context of Sustainable Development"Design for sustainability (D4S): towards advanced product conceptsHan Brezet, Sacha SilvesterICEEM/02 - ENVIRONMENTAL ENGINEERING SECTION"Water and Wastewater Treatment Technologies"Complex approach to the problem of persistent organic pollutants degradation in water environmentVictor Covaliov, Olga Covaliova, Angela Cincilei, Gilles Mailhot, Pasca... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25176
Environmental Engineering and Management Journal, Vol. 4 Nr. 2
Environmental Engineering and Management Journal › Vol. 4 › Nr. 2 Contain all the articles from this issueCatalysis for heterogeneous photocatalysis. Part II. Methods for synthesisAnca Florentina Caliman, Ion BalasanianpH influence on sonochemical degradation of cyanides with H2O2 and O2Ioan Iordache, Mircea Teodor Nechita, Nicolae Aelenei,Gabriela Apostolescu, Ioan RoscaStudies of various wastewater nitrification bioreactor types based on modelling and simulationDiana Lupasteanu, Florina Ungureanu, Maria Gavrilescu Wastewater from winemaking industry: monitor... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25179
Environmental Engineering and Management Journal, Vol. 3 Nr. 3 (II)
Environmental Engineering and Management Journal › Vol. 3 › Nr. 3 Contain all the articles from this issueICEEM/02 - ENVIRONMENTAL ENGINEERING SECTION"Treatment Technologies for Gaseous Fluxes"Surface chemistry studies on molybdenaâalumina catalystTatiana Yuzhakova, ?kos R?©dey, 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
Modelling and simulation of heavy metals transport in water and sediments
Environmental Engineering and Management Journal › Vol. 6 › Nr. 2 AbstractHeavy metals can be transported by rivers which flow through areas with industrial pollution, both as metal in solution and metal adsorbed to suspended solids. They can settle in lakes and accumulate in the sediment, exhibiting significant effects on wildlife and humans if they enter into the food chain.In this work, heavy metals transport and sedimentation is simulated based on an analytical model proposed in literature, considering the material balance and complementary equations, unde... Autori: Camelia Beţianu, Florina Ungureanu, Loredana Branza, Lucian Vasile Pavel, Maria Gavrilescu, Simona Pintilie ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25197
Environmental Engineering and Management Journal, Vol. 7 Nr. 3
Environmental Engineering and Management Journal › Vol. 7 › Nr. 3 Include urmatoarele articole:â? Cost sensitivity analysis by Monte Carlo simulationâ? Mathematical modeling of gas drying by adsorptionâ? Methyl isobutyl ketone combustion over Pt/Al2O3 catalystâ? Distribution of oxygen transfer rate in stirred bioreactors with simulated brothsâ? Unsteady heat transfer inside an elliptic cylinderâ? Triphasic external-loop airlift reactors. Hydrodynamic and dispersion studiesâ? Sustainable combined utilization of renewable forest resources and coal in Roma... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25209
Methodology to conserve energy in surface aerators
Environmental Engineering and Management Journal › Vol. 7 › Nr. 2 AbstractBased on the simulation equations, which were developed earlier (Rao, 1999 and Rao et al., 2007) relating the oxygen transfer coefficient k (= KLa20 (?”/g2)1/3) with theoretical power per unit volume of water X (= N3D2/g4/3?”1/3) and k with actual powerconsumed by the surface aerators per unit volume PV (= P/(V??(g?”)1/3), methodology has been demonstrated to the save the energy consumption, defined by ?? (=PV /k), where KLa20 is the overall oxygen transfer coefficient at 20oC, ?” is kin... Autori: Achanta Ramakrishna Rao, Bimlesh Kumar, Neelam Verma ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25243
Cost sensitivity analysis by Monte Carlo simulation
Environmental Engineering and Management Journal › Vol. 7 › Nr. 3 AbstractThe cost sensitivity analysis of a chemical process was carried out through a sequence of three stages, using three different software applications. In the first stage an alkylation process was optimized with GAMSÂź software, the objective function being the profit. This optimization was repeated for the values of five different costs in the frame of a factorial experiment. In the next stage, the objective function-costs dependence was quantified with an artificial neural network, obtain... Autori: Alexandru Woinaroschy ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25273
Environmental Engineering and Management Journal, Vol. 9 Nr. 3
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 ? Denitrifying activity of activated sludge in suspension and in biofilm? Denitrifying potential of an activated sludge derived consortium? Biosorption of hexavalent chromium based on modified Y zeolites obtained by alkali-treatment? Identifying anaerobic digestion models using simultaneous batch experiments? Olive mill wastewater as a renewable resource? Influence of innoculum acclimation in the biodegradation rate and estimated biodegradbility of cow manure, food waste and oil? Studies on the ... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25378
Migration and fate of persistent organic pollutants in the atmosphere - A modelling approach
Environmental Engineering and Management Journal › Vol. 7 › Nr. 6 AbstractConsidering that the fate and behaviour of contaminants within the environment is an extremely complex issue, this paper analyzes the development of predictive models which can contribute to the understanding of the release of a contaminant. Different types of models concerning the atmospheric transport of POPs are examined, taking into consideration that these models can be used to simulate the behaviour of contaminants. A successful simulation, in which there is satisfactory agre... Autori: Camelia Smaranda, Maria Gavrilescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25327
Environmental Engineering and Management Journal, Vol. 9 Nr. 2
Environmental Engineering and Management Journal › Vol. 9 › Nr. 2 - Artificial intelligence applications in the atmospheric environment: status and future trends- Kernel methods and neural networks for water resources management- Environmental decision support systems based on models and model-based reasoning- Towards an intelligent tutoring system for environmental decision makers- SBC-MEDIU: A multi-expert system for environmental diagnosis- Fast and accurate residential fire detection using wireless sensor networks- Validation of a knowledge-based risk mode... Autori: http://www.ecozone.ro/reviste.php?RID=25377
An overview of decision support systems for integrated water resources management
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 AbstractIntegrated water resources management requires planning and management activities, as well as adequate information and communication within a structure that groups different stakeholders (industry, agriculture and other types of water users, civil society representatives, university and research institutions, water authorities and waterworks companies), being thus characterized by a high level of complexity, and requiring the involvement of numerous decision-makers operating at different... Autori: , , Luminita Lupu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25344
Hydrodynamic modelling of pollution with LNAPL generated by waste dump from metal working industry
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 AbstractIn the present article, some models conceptually and mathematically applicable to the LNAPL transitory transport process through ground water were discussed. Subsequently, by using a personal computer program of pre-processing basis data combined with MOVER 2.0, the levigation process of oily dross/scale stored in the waste dump, which produces steel rolled tubes, was numerically simulated, in adequate scenarios. The results of the simulations will be useful at the evaluation of the impa... Autori: Elena Doinita Carlig, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25361
Environmental Engineering and Management Journal, Vol. 8 Nr. 3
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 â? Bioremediation of contaminated air using a bioscrubberâ? Quality risk evaluation of the groundwater resources on the moldavian areaâ? Electrochemical characterization of some dental materials in accelerated environmental testingâ? Preliminary study of simple and Fenton oxidation with hydrogen peroxide applied on final effluents from a zootechnical farmâ? The environmental impact assessment caused by the dykes failureâ? Revaluation of beer industry byproducts â medical implicationsâ? ... Autori: http://www.ecozone.ro/reviste.php?RID=25372
Environmental Engineering and Management Journal, Vol. 8 Nr. 6
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 â? Physiological changes in seedling germination and growth plant under chemical stress conditionsâ? Studies on sorption and transport processes of cadmium in soilsâ? Assessment of the anthropogenic impact on water systems by fluorescence spectroscopyâ? Research on the effects of soil improvement by fertilization on the quality of winter wheatâ? Halotherapy: From ethnoscience to scientific explanationsâ? Study regarding the sorption of erythrosine from aqueous solution onto soilâ? Hydroxy... Autori: ISSN: 1582 - 9596 http://www.ecozone.ro/reviste.php?RID=25375
Wind power systems with hydrostatic transmission for clean energy
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 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
Entrepreneurial capacity for sustainable development of economic environment
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 Abstract Based on qualitative research conducted on teams of Romanian students in Engineering and Management that participated in transnational teams within the framework of an international simulation program on global technologies for sustainable development, specific features in relation with the development of entrepreneurship capacity (values, skills competencies) were identified and examined. It was found that specific cultural biases influenced the way the Romanian students approached var... Autori: Aida Carmen Hutu, Silvia Avasilcăi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25384
Numerical simulation of pollution with anion SO4 2- for the aquifer inside a metallurgical waste hall
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
The current paper describes the concept and the mathematical models axed upon flow transport and transport of pollutants in the aquifer inside a metallurgical waste hall. Then, using a complex of basic data related to a representative case study - several information being achieved by systematic measurements, for long period, throughout ten drillings - and the pack of FEFLOW 5.1 programmes, the dispersion of an uppermost pollutant (the anion SO4) has been numerically simulated, for t... Autori: Elena Doinita Carlig, Esmeralda Chiorescu, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25416
Photocatalytic oxidation process of sulfamethazine. Modeling based on neural networks
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
The photocatalytic degradation of sulfamethazine, a sulfonamide drug, has been investigated experimentally, in aqueous heterogeneous solutions containing n-type oxide semiconductors as photocatalysts, and by simulation, using neural network modeling. Through direct neural network modeling, the evolution of the photocatalytic oxidation process is evaluated as function of illumination time and type of catalyst. Inverse neural network modeling is a particular optimization that gives inf... Autori: Ciprian George Piuleac, Ioannis Poulios, Silvia Curteanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25430
The environmental impact assessment caused by the dykes failure
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
The paper presents a risk analysis and assessment of the defence linear systems failure (dykes) in case of accidental flood. Also, breach scenarios and hydrographs computation for the corresponding accidental high waters are provided. The impact assessment is highlighted through a global matrix model for costs quantification.
It is also presented the flooding computation model for different versions of the linear defence systems and in a correspondent way the Inundation Accidental D... Autori: Codruta Badaluta-Minda, Gheorghe Creţu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25433
Numeric simulation of air pollution due to naval engines
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
This paperwork tried to simulate the combustion inside the naval engines using the newest computer methods and technologies with the result of a diverse and rich palette of solutions, extremely useful for the study and prediction of complex phenomena of the fuel combustion.
The paperwork is contributing to the theoretical systematization of the area of interest bringing into attention a thoroughly inventory of the thermodynamic description of the phenomena which take place in the co... Autori: Nicolae Buzbuchi, Liviu Constantin Stan, Daniela-Elena Mitu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25514
Economical and social assessments approach on paper recycling
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
Life Cycle Cost Analysis (LCC) and Social Life Cycle Analysis (SLCA) are available methodologies for the economic and social assessment of a product or process along its life cycle. Different approaches regarding LCC and SLCA have recently emerged and several hypotheses are currently on testing and discussing. This paper shows existing LCC and a SLCA approaches as well as the methodology applied in the particular case of a paper recycling process. This study gathers part of the Europ... Autori: Beatriz Ferreira Pozo, Antonio Dobon Lopez, Carlos Lopez Lopez, Maria Calero Pastor ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25529
Inter-cities transfer of a transportation project
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 Abstract
Transferability process identifies the transportation projects which could be implemented successfully in different cities in order to encourage the good practices. This paper proposes a method to evaluate the environmental efficiency of a project by using a hybrid approach based on utility theory and data mining techniques. Transferability principle is applied to show the environmental efficiency of an access controlled area in the hyper centre of two different cities. COPERT III te... Autori: Catalin Popescu, Luminita Ion, Tatiana Cucu, Jean-Marie Boussier, Augustin Mitu, Daniela Uta ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25560
Modeling and simulation of quality indicators of surface water
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 Abstract
The efficient understanding and application of mathematical models in the study of environmental phenomena keep up with the latest results in the mathematical domain which could provide solutions for controlling, analyzing, predicting and study of risk phenomena. This paper presents a browsing through some mathematical categories of interpreting statistical data, examples and their analysis in connection with the degree of polluting the water down the Danube River with the help of qu... Autori: Valerian Antohe, Constantin Stanciu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25562
Studies on sorption and transport processes of cadmium in soils
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 Abstract
Heavy metals produced and released by anthropogenic activities generate serious environmental problems. Ions of toxic metals can bind to the mineral surface in a number of ways, including absorption, adsorption, precipitation, ion exchange.
The paper shows that the fate and migration of heavy metals in soils strongly depend on the physical properties and chemical and mineralogical composition of such environments. Cadmium is one of the most toxic metals with carcinogenic and teratog... Autori: Vasile Lucian Pavel, Dumitru Bulgariu, Laura Bulgariu, Raluca Maria Hlihor, Maria Gavrilescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25577
Validation of a knowledge-based risk model for biological foaming in anaerobic digestion simulation
Environmental Engineering and Management Journal › Vol. 9 › Nr. 2 Abstract
Anaerobic digestion (AD) is a complex biological system which can be affected by several operational problems. Among them, biological foaming is one of the most difficult to deal with. It has many effects, such as causing gas pipe clogging and probe failures, and it can affect mixing devices, etc. Since the mechanisms involved in biological foaming development are not fully understood, it is not included in standard anaerobic digestion models. For this reason, a knowledge-based risk ... Autori: Eric Latrille, Ignasi Rodriguez-Roda, Jean-Philippe Steyer, Joaquim Comas, Jordi Dalmau ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25610
Stability factors and control strategy for biogas production from sludge
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
A method based on measuring substrate depletion rate was developed to evaluate the denitrifying activity of activated sludge in suspension and in biofilm form in anoxic serum flasks. The adapted activated sludge inoculum was grown as biofilm in an anoxic rotating biological contactor (RBC). Acetate was used as external carbon source to obtain a carbon to nitrogen ratio (C/N) of 2. The results showed that the specific activity of cells in biofilm form was higher than in planktonic for... Autori: Elba Vivanco, Juan Carlos Ruiz, Paola Poirrier, Rolando Chamy, Yves Lesty ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25617
Modeling and simulation of an ultrafiltration process for the removal of suspended solids and colloids from wastewater
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
Mathematical modeling of the ultrafiltration (UF) process is motivated by the complexity of retention phenomena that occur during the UF in conjunction with the complexity of wastewater matrices submitted to ultrafiltration, as well as by the need to predict the process behavior in extreme conditions, such as high pollution loads for UF-membrane cleaning cycles optimization or for automated control of the process. Thus, series of laboratory-scale ultrafiltration experiments were perf... Autori: , George Barjoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25630
Environmental Engineering and Management Journal, Vol. 10 Nr. 1
Environmental Engineering and Management Journal › Vol. 10 › Nr. 1 ? COMPACT MICROPULSE BACKSCATTER LIDAR: AIRBORNE AND GROUND-BASED APPLICATIONS
? STUDIES OF THE IMPACT OF AEROSOL OPTICAL PROPERTIES ON CLIMATE CHANGE PROCESSES
? A STUDY OF THE AEROSOL OPTICAL PROPERTIES AT TWO AERONET STATIONS FROM ROMANIA
? COMPLEMENTARY ATMOSPHERIC URBAN POLLUTION STUDIES IN THE NORTH-EAST REGION OF ROMANIA, IASI COUNTY
? ?NGSTR?M TURBIDITY IN THE LOWER LAYERS OF THE TROPOSPHERE
? LIDAR MONITORING OF ANTHROPOGENIC POLLUTION AND NATURAL PHENOMENA
... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25665
NUMERICAL SIMULATION OF HEAT TRANSFER IN DIRECTIONAL SOLIDIFICATION PROCESS FOR POLYCRYSTALLINE SILICON
Environmental Engineering and Management Journal › Vol. 10 › Nr. 6 Temperature distribution in the vacuum directional solidification system influenced seriously on the impurities concentration andmicrostructure in Polycrystalline Silicon. In this study, a numerical model for the transient global heat transfer for directionsolidification process has been developed by the finite element method (FEM). A two-dimension numerical simulation fortemperature distribution of directional solidification process was carried out using software Multi-physics Comsol 3.5a. Ther... Autori: Guoqiang Lv, Wenhui Ma, Hua Wang, Xiangyang Mei, Kuixian Weihttp://www.ecozone.ro/reviste.php?RID=25671
EFFECT OF THE INCYLINDER FORCED SWIRLS ON PERFORMANCE AND EMISSION OF DIESEL ENGINE
Environmental Engineering and Management Journal › Vol. 10 › Nr. 6 The combustion process plays the important role to improve performance and emission of diesel engine. To improve the rate of combustion process, the fuel-air mixing process should be accelerated. In this paper, based on the Double Swirl combustion chamber, from the macroscopic characteristics and simulation analysis, the effect of the incylinder forced swirls on performance and emission of diesel engine was studied. The results indicated that due to the incylinder forced swirls, the distribution... Autori: Chang-Yuan Wang, Fu-Shui Liu, Xiang-Rong Lihttp://www.ecozone.ro/reviste.php?RID=25673
EFFECT OF STICKING PROBABILITIES ON NUMERICAL SIMULATION OF PARTICLE AGGREGATION IN TWO-DIMENSIONAL SPACE
Environmental Engineering and Management Journal › Vol. 10 › Nr. 6 The main phenomenon of coagulation is that particles aggregate to form floc. The formation of floc and cluster was simulated with computer in two-dimensional space using particle-cluster aggregation model and the properties of floc were analyzed using fractal theory. The effect of sticking probabilities on floc structure, density and porosity were analyzed. With the sticking probability increases, the simulated floc structure is gradually loose, floc density is gradually lower, the porosity is g... Autori: Wanchun Tan, Yunbo Wang, Changbo Jiang, Shiquan Sun, Hong Chen, Xiaobao Niehttp://www.ecozone.ro/reviste.php?RID=25675
SIMULATING HUMAN-INDUCED CHANGES OF WATER RESOURCES IN THE UPPER XILIAOHE RIVER BASIN, CHINA
Environmental Engineering and Management Journal › Vol. 10 › Nr. 6 Human activities can considerably change water resources of river basins. This is particularly true in Laohahe River Basin (LRB) located in upper Xiliaohe River in northern China, where intensive irrigation has resulted in almost full cessation of the water inflow, as well as the drastic drop in underground water level. The impact induced by climate change effects and human activities on stream flow changes in LRB was weighed up and distinguished by using Soil and Water Assessment Tool. Simulati... Autori: Hao Lu, Zhang Xiaoyu, Gao Jingminhttp://www.ecozone.ro/reviste.php?RID=25680
SIMULATION OF DENOX MASS BALANCE BASED ON VISUAL COMPONENT LIBRARY (VCL)
Environmental Engineering and Management Journal › Vol. 10 › Nr. 6 Mass and energy balance calculation is the premise and key of the SCR (Selective Catalyst Reduction) DeNOx system design. However, the traditional calculation method is too complicated. In this paper, the author designed E-R data model for DeNOx system, simulated mass and energy transfer process, and developed visual calculation software based on VCL (visual component library) after studying the principle of SCR and data structure of DeNOx system. Comparing the ammonia demand and flue gas volume... Autori: Yungui Du, Qirong Wu, Xiu Yang, Yu Yuhttp://www.ecozone.ro/reviste.php?RID=25688
FORCED SWIRL COMBUSTION CHAMBER IN DIESEL ENGINE: NUMERICAL SIMULATION AND EXPERIMENTAL RESEARCH
Environmental Engineering and Management Journal › Vol. 10 › Nr. 7 Fuel injection system, intake system and the geometric shape of combustion chamber are the three key factors to the fuel-air mixture and combustion process for diesel engine. long with the need of high power density in diesel engine, the pressure of intake is higher increasingly. Together with the effect of high pressure fuel injection, the fuel-air mixture and combustion process is hard to spread as usual. In this circumstance, the performance of power, heat efficiency and emission in diesel en... Autori: Shang Yong, Liu Fu-Shui, Li Xiang-Ronghttp://www.ecozone.ro/reviste.php?RID=25704
NUMERICAL SIMULATION APPLIED FOR UNSYMMETRICAL DIMETHYLHYDRAZINE PROPELLANT GAS DISPERSION BASED ON CFD TECHNOLOGY
Environmental Engineering and Management Journal › Vol. 10 › Nr. 7 This paper presents a study of the numerical simulation applied for unsymmetrical dimethylhrazine (UDMH) gas dispersion. This study considers an assumed UDMH store conditions and provides important data regarding the relation between the concentration distribution of UDMH and dispersion distance from the source based on the computation fluid dynamic (CFD) software FLUENT. The simulation results show that the ventilation vent and distance of dispersion play an important role in the concentration ... Autori: Zhiyong Huang, Guofeng Jin, Xuanjun Wanghttp://www.ecozone.ro/reviste.php?RID=25712
PERFORMANCE STUDY OF SOLAR DRYER FOR AGRICULTURAL AND MARINE PRODUCTS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 Abstract:In the current work design and mathematical description of thermal performance analysis of solar dryer for agricultural andmarine products is presented. Proposed solar dryer includes two main subunits: 1) Solar PV-Thermal dehydrator (heat transferfluid is air), which is used as heat source for dryer; 2) Drying cabin with multistage trays. The pilot unit of proposed systemdeveloped in Renewable Energy Department of Physics Faculty of University of Santiago de Compostela. Investigations o... Autori: Angeles López Agüera, Daniel Rey Rey, E. Virites Montes, Iago Rodriguez Cabo, Jasurjon S. Akhatov, Vicente Gándara ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25719
SPECIFIC FEATURES OF A COUNTER-ROTATING TRANSMISSION FOR RENEWABLE ENERGY SYSTEMS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 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
4-BAR GEARED LINKAGE USED FOR PHOTOVOLTAIC AZIMUTH ORIENTATION
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 Abstract:In order to capture as much solar energy as possible, the photovoltaic converter has to follow the sun movement during a day; thiscan be achieved by a tracking system. Most tracking systems have complex and costly structures that can provide wide anglevariations. This paper presents a geared linkage that is build up by a planetary system of gears fitted on a linkage, and thus helpsin reaching wide angles. Starting from a patented linkage, which reaches ≈200° angular strokes, by a... Autori: Dorin Diaconescu, Ioana Hermenean, Nora Creanga ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25736
MOTION LAW OF A PSEUDO-EQUATORIAL SOLAR THERMAL COLLECTOR FOR SPECIAL WORKING REQUIREMENTS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 Abstract:A comparative analysis is drawn on the energetic responses numerically simulated for Brasov, Romania location, delivered bytwo mono-axial pseudo-equatorial STCs (solar thermal collectors): a flat plate STC and a STC with heat pipes; the two systemsare destined for future implementation on Transilvania University Campus. Accordingly, two tracking programs are consideredfor the diurnal motion: a) of 1h constant duration steps, for school courses interval (September-June) and b) 1-step pro... Autori: Maria M. Vatasescu, Veronica E. Dombi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25740
STEP-TRACKING PROGRAM SYNTHESIS OF AN AZIMUTH TRACKED CONCENTRATING PHOTOVOLTAIC (CPV) SYSTEM
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:For the optimal working of the concentrating photovoltaic systems (CPV), these are usually tracked, and the accuracy required infollowing the sun path is much higher than in non-concentrating system. The paper focuses on the synthesis of the optimal steptracking program of an azimuth tracking system, used for accurate tracking of a CPV system. The paper presents the synthesismodelling algorithm and the numerical simulations for a CPV system, orientated with an azimuth tracking system, i... Autori: Ioana Sinziana Hermenean, Ion Visa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25748
DESIGN AND SIMULATION OF A PHOTOVOLTAIC STRING WITH TRACKING MECHANISM
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:The paper presents a method to improve the efficiency of a photovoltaic (PV) string by employing a mono-axis trackingmechanism. The tracking system was optimized so that it has minimum energy consumption during tracking. The PV stringsimultaneously changes the daily position using a linear actuator which transmits the motion to all modules by a rack-pinion gearmechanism. The system is designed in virtual prototyping concept with the following software solutions: for the solid modeling -... Autori: Cătălin Alexandru, Nicoleta-Irina Tatu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25766
THE ENERGY EFFICIENCY OF NATURAL SHADING WITH CLIMBING PLANTS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:The work presents the results in investigating the thermal behaviour of passive solar elements, for expanding the existing analysisand prediction methodologies. The interest focuses on solar control through natural shading with deciduous plants. This providesa natural path for incorporating all advantages the passive behaviour, available throughout the year. The simulation of thedynamic energy performance of building elements is developed, starting with a physical modelling of the vario... Autori: Angelos D. Tzachanis ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25768
CLEAN ENERGY RESPONSE OF PV SYSTEMS WITH AZIMUTH AND PSEUDO-EQUATORIAL TRACKING
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 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
CONTRIBUTIONS TO THE IMPROVEMENT OF POLLUTION CONTROL IN LAKES AND AN APPLICATION FOR THE GOVORA LAKE
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:In this paper, the mathematical model is improved by considering the density variations of the liquid from the pollution source vs.pollutantâs concentration of this liquid and by including the sorption-desorption term (SDT), which takes into account thisphysical process, played by a first-order decay model defined by two coefficients and an exponent. In order to practically use thisimproved mathematical model, the authors inferred the calculating relationships from automatic processin... Autori: Daniel Bucur, Esmeralda Chiorescu, Gheorghe Ţigaret ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25783
EXTENSION OF ACTIVATED SLUDGE MODEL NO 1 WITH TWO-STEP NITRIFICATION AND DENITRIFICATION PROCESSES FOR OPERATION IMPROVEMENT
Environmental Engineering and Management Journal › Vol. 10 › Nr. 10 Abstract:The present paper presents an enhanced Activated Sludge Model No. 1 in which nitrification and denitrification are modelled astwo-step processes. The nitrification process is considered as a sequence of two steps carried out by two distinct genera ofbacteria, with nitrite as an intermediate product. For the denitrification process a parallel approach was used that considers nitrateand nitrite to be directly reduced to molecular nitrogen. The new model is compared to the original Activat... Autori: George Simion Ostace, Paul Şerban Agachi, Vasile Mircea Cristea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25786
USE OF ARTIFICIAL NEURAL NETWORK FOR PREDICTION OF COAGULATION/FLOCCULATION PROCESS BY PAC IN WATER TREATMENT PLANT
Environmental Engineering and Management Journal › Vol. 10 › Nr. 11 Abstract:The paper presents the results of a study carried out using the Artificial Neural Network (ANN) for prediction the coagulation/flocculation process of suspended solids in water treatment plant (WTP). In this research 5 kinds of Poly Aluminum Chloride (PAC) as coagulant were used to examine the impact of coagulant kinds, PAC dosage and influent turbidity for removal of suspended solids. Determination of optimal coagulant doses is vital, as insufficient dosing will result in undesirable t... Autori: Gagik Badalians Gholikandi, Mohammad Delnavaz, Reza Riahi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25806
HOW COMPANIES INTEGRATE ENVIRONMENTAL ISSUES INTO THEIR MARKETING STRATEGIES
Environmental Engineering and Management Journal › Vol. 10 › Nr. 12 An increased level of environmental awareness by consumers has caused marketing to pay special attention to the deteriorating environment. This is a consequence of markets punishing those companies that fail to consider environmental concerns in their marketing efforts. However, how environmental proactivity is integrated into marketing strategy has been scarcely analyzed in the marketing literature. The present paper aims to fill this gap in the literature by theoretically analyzing the ways in... Autori: José-Felipe Jiménez-Guerrero, Juan Carlos Gázquez-Abad, Juan-Antonio Mondejar-Jimenez, María Cordente-Rodríguez ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25815
ECO-EFFICIENCY: EFFECTS ON ECONOMIC AND FINANCIAL PERFORMANCE. EVIDENCES FROM DOW JONES SUSTAINABILITY EUROPE INDEX
Environmental Engineering and Management Journal › Vol. 10 › Nr. 12 In recent years, a new line of research, named eco-efficiency theory has become an issue of considerable interest. The most important works in relation with this topic focus on the fact that enterprises can maximize their economic benefits and minimize the impact on the environment at the same time. Therefore, the recommendation is to choose the so called strategy win-win, which allows for getting a double economic environmental benefit by means of a good management of productive resources, the ... Autori: Esteban Pérez-Calderón, Jose Mondejar-Jimenez, María-Leticia Meseguer-Santamaría, Patricia Milanés-Montero ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25816
FACTORS INFLUENCING WATER SAVING BEHAVIOUR FOR SPANISH HOUSEHOLDS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 12 Freshwater is a fundamental natural resource. It is essential for sustaining life, supports the development of ecosystems and economies and is also used as a recreational resource. Therefore, its appropriate management is critical if we want to guarantee the long-term sustainability of the supply. The aim of this paper is to analyze the main aspects influencing water saving in Spanish households. To accomplish this goal, we start by developing a theoretical analysis of those aspects that affect ... Autori: Juan Carlos Gázquez-Abad, Juan-Antonio Mondejar-Jimenez, Manuel Vargas-Vargas ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25824
CORPORATE ENVIRONMENTAL DISCLOSURE AND LEGITIMACY THEORY: AN EUROPE PERSPECTIVE
Environmental Engineering and Management Journal › Vol. 10 › Nr. 12 Given the scenario of conflicting evidence found in previous literature with respect to the best Theory to explain the relationship between Environmental Disclosure and Environmental Performance, in this study we have tested Legitimacy Theory by using a time series structure for DJS Europe Index and controlling for the kind of industry. We have used Panel Data Methodology to eliminate the individual heterogeneity and Generalized Method of Moments (GMM) to control for problems of endogeneity by u... Autori: Esteban Pérez-Calderón, Patricia Milanés-Montero ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25825
ECO-EFFICIENCY: EFFECTS ON ECONOMIC AND FINANCIAL PERFORMANCE. EVIDENCES FROM DOW JONES SUSTAINABILITY EUROPE INDEX
Environmental Engineering and Management Journal › Vol. 10 › Nr. 12 In recent years, a new line of research, named eco-efficiency theory has become an issue of considerable interest. The most important works in relation with this topic focus on the fact that enterprises can maximize their economic benefits and minimize the impact on the environment at the same time. Therefore, the recommendation is to choose the so called strategy win-win, which allows for getting a double economic environmental benefit by means of a good management of productive resources, the ... Autori: Esteban Pérez-Calderón, Jose Mondejar-Jimenez, María-Leticia Meseguer-Santamaría, Patricia Milanés-Montero ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25845
EVALUATION OF DIFFERENT CONTROL STRATEGIES OF THE WASTE WATER TREATMENT PLANT BASED ON A MODIFIED ACTIVATED SLUDGE MODEL NO. 3
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 The first part of this work presents the development and implementation in the Benchmark Simulation Model No 1 (BSM1) of a modified Activated Sludge Model No 3 (ASM3). The enhanced ASM3 presented in this study has three modifications compared to the original ASM3. The first modification is the representation of the simultaneous heterotrophic biomass growth on the primary substrate and on the internal storage products. Second, nitrification is modeled as a two-step process with nitrite as an inte... Autori: George Simion Ostace, Paul Şerban Agachi, Vasile Mircea Cristea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25865
NEW TECHNIQUE FOR SPEEDING UP THE WASTEWATER TREATMENT SIMULATIONS
Environmental Engineering and Management Journal › Vol. 11 › Nr. 2 The Landra Wastewater Treatment Expert System is developed by the University of Pannonia (Hungary, Veszpr?©m). The flexible, simulation-based software provides the possibility to choose the built-in mathematical models or the user may create a new one arbitrarily. A customized program codes can be created according to the technological description, the input data and the control strategy provided by the user. This way the efficiency and reliability of the system is significantly enhanced. An imp... Autori: , Endre Domokos, Tatiana Yuzhakova, Viola Somogyi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25888
SHALLOW GROUNDWATER HYDRO-CHEMICAL EVOLUTION AND SIMULATION WITH SPECIAL FOCUS ON GUANZHONG BASIN, CHINA
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 AbstractGroundwater hydrochemical evolution has influences on the rational use and conservation of water resources. This paper whichtakes MapGIS as the platform is aimed at demonstrating the evolution of shallow groundwater hydrochemistry in Guanzhongbasin (China) by adopting mathematical statistics, ratios of ion pair equivalents, geochemical simulation. The direction ofevolution is dependent on the geological, geomorphological, and hydrogeological conditions of the study area. The spatialdistr... Autori: Hua Tian, Lei Duan, Wenke Wang, Xiaoting Yang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25956
PROBABILISTIC SCENARIO DEVELOPMENT TO ESTIMATE FUTURE RUNOFF IN THE YELLOW RIVER BASIN, CHINA
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 AbstractThis paper focused on estimating climate change impact on the future water availability in the Yellow River Basin,China. However, climate change and its impact on water availability are subject to large uncertainties. In order todeal with uncertainties, scenarios were used to explore possible future states of climate variables under uncertainty,and probabilities were attached to represent uncertainty explicitly according to the Principle of Maximum Entropy.Probabilistic scenarios of futu... Autori: Congli Dong, Gerrit Schoups, Nick van de Giesen ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25957
ESTIMATING AND MODELLING THE SLUDGE EXCESS DISCHARGE IN WASTEWATER TREATMENT PLANTS IN CHINA
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 AbstractA rapid increase of wastewater treatment plants (WWTPs) has made the disposal of excess sludge from WWTPs a seriousproblem. In order to enhance the management of sludge, both development of sludge reduction technologies and sludgeevaluation system are of great importance. Based on the survey data from 696 plants in China in 2009, an empirical model wasdeveloped to simulate the production and discharge of excess sludge, which considered influent, temperature, Chemical OxygenDemand (COD), ... Autori: Chengwen Wang, Tao Xie ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25963
A TECHNO-ECONOMIC ANALYSIS OF BIODIESEL PRODUCTION FROM MICROALGAE
Environmental Engineering and Management Journal › Vol. 12 › Nr. 8 AbstractThe preliminary assessment of a cost-effective flow-sheet for the production of biodiesel from microalgae lipid fraction wascarried out. The study was based on approximated cost-estimation methods integrated with the simulation software Aspen Plusź.Several scenarios were investigated to compare costs regarding the main steps of the biodiesel production process. Ranges ofinput variables from downstream literature and experimental data were used to simulate the sections that define concret... Autori: Antonio Marzocchella, Giuseppe Olivieri, Piero Salatino, Teresa Guida ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25973
SIMULATION OF PROCESSES IN PAPERMAKING BY WinGEMS SOFTWARE
Environmental Engineering and Management Journal › Vol. 12 › Nr. 8 AbstractThe WINGEMS software is a useful tool in analyzing, mathematical modeling and synthesis of chemical processes. Thissoftware can be applied to simulate various stages of the papermaking process. An example of simulation and modeling ofprocess is presented for paper stock preparation line for papermaking. On the basis of data obtained during process analysis, it ispossible to elaborate a strategy for control and monitoring of technological parameters and, while the efficiency of the proces... Autori: Corina Măluțan, Theodor Măluţan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25981
INSTRUMENTS FOR INTEGRATED WATER RESOURCES MANAGEMENT: WATER QUALITY MODELING FOR SUSTAINABLE WASTEWATER MANAGEMENT
Environmental Engineering and Management Journal › Vol. 12 › Nr. 8 AbstractThis study presents the development and use of a hydraulic-coupled water quality model for the simulation of BiochemicalOxygen Demand (BOD) concentrations in the Bahlui River, a small river located in northeastern Romania. This river experiencesthe typical pollution problems for many Romanian water bodies: heavy pollution from both diffuse and point sources, lowconnectivity to wastewater systems in rural areas and moderate removal of pollutants in municipal wastewater treatment plants.Th... Autori: , Claudia Cojocariu, Denie C.M. Augustijn, George Bârjoveanu, Ioan Crăciun ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25985
INNOVATIVE IMMUNITY TO ELECTROSTATIC DISCHARGE TESTING METHOD USING THE VERY-FAST TRANSMISSION LINE PULSE CONCEPT
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 AbstractThe transmission line pulse (TLP) method it is one of the most advantageous electrostatic discharge (ESD) testing method forsemiconductor devices. A new factual approach is developed in this paper which is based on TLP method. The new method isnamed very-fast transmission line pulse (VF-TLP), having as principal characteristics the very short pulse width and small risetime. The appropriate device under test (DUT) is a gate-grounded (GG) NMOS transistor. The testing signal was applied o... Autori: Alexandru Salceanu, Ana-Maria Nicuta, Paul Bicleanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25992
STUDIES OF INDUCTANCE VARIATION FOR SQUARE SPIRAL INDUCTORS USING CIBSOC SOFTWARE
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 AbstractThis paper presents the most recent developments regarding the square spiral inductors inductance evaluation. The study wasperformed in order to develop, implement and validate powerful software, CIBSOC able to determine the inductances of spiralinductors and also to optimize the spiral inductors layouts.We have studied the inductance variation of square spiral inductors. The four modules of the CIBSOC software were described,applied for the computation of inductance and the optimization... Autori: Adina Racasan, Calin Munteanu, Claudia Hebedean, Claudia Pacurar, Vasile Topa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25997
FLOW PATTERNS IN THE MAGNETIC NANOFLUID CORE OF A MINIATURE PLANAR SPIRAL TRANSFORMER
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 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
EMBANKMENT FAILURE MODELING USING THE HR BREACH MODEL
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractThe HR BREACH model is a physically based numerical model for the simulation of breach initiation and formation throughembankment dams, dykes, and flood embankments. The model is used for the analysis of homogenous as well ascomposite/zoned embankments. Simulation can also include the effect of surface protection such as grass or rock blocks. Twobreach failure modes are available: failure by overtopping and failure by piping. Breach growth can proceed through surfaceerosion or head-cut e... Autori: Andreja Jonoski, Ioana Popescu, Mark Morris, Mohamed Hassan, Tseganeh Gichamo ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26017
ANALYTICS FOR SUPPORTING URBAN WATER MANAGEMENT
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractWater distribution networks are complex systems that require innovative technological solutions enabling an integrated andrational water resource management. This paper presents the application of data analytics approaches on flow and pressure data,continuously measured at crucial points of the network, for improving efficiency of leak localization. The general goal is toreduce time and costs for physical check and consequent rehabilitation activities.Although the general benefits provid... Autori: Antonio Candelieri, Enza Messina, Francesco Archetti ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26018
MAGNETIC FLUID EQUIPMENT FOR SORTING SECONDARY POLYOLEFINS FROM WASTE
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractThe paper presents the research made on the FP7 project Magnetic Sorting and Ultrasound Sensor Technologies for Productionof High Purity Secondary Polyolefins from Waste in order to develop a magnetic fluid equipment for sorting of polypropylene(PP) and polyethylene (PE) from polymers mixed waste streams. Because both PP and PE float in water, it is difficult to separateone from the other. The paper presents the principles of inverse magnetic density separation process and the results ... Autori: Bin Hu, Francesco Di Maio, Guillaume Houzeaux, Liana Baltes, Mircea Tierean, Peter Rem ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26028
CFD MODELING AND SIMULATION OF A SURFACE WATER TREATMENT PILOT PLANT
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractThe hydrodynamics of two equipments from a surface water treatment pilot plant has been investigated through residence timedistribution (RTD) experiments using brine solution as tracer. Computational Fluid Dynamics (CFD) procedure, which isincreasingly utilized to study a wide variety of complex environmental fluid mechanics processes, was used to predict the flowpatterns and other properties of flowing fluids (e.g. velocity, concentration of species etc.). In this work, ANSYS Fluent 14.... Autori: Adina Pacala, Alain Liné, Alexandru-Dan Filep, Cosmina-Mariana Militaru, Teodor Todinca ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26030
CHALLENGES FOR 2D WATER QUALITY MODELLING OF LAKE TAIHU IN CHINA
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractLake Taihu is a shallow, wind-driven lake where eutrophication is always a serious problem. The study presented hereininvestigates the effect of wind on the eutophication of the lake, by using a two-dimensional (2D) hydrodynamic model coupledwith a 2D water quality model. The 2D water quality model looks in particular at the water quality situation of Lake Taihu in theyear 2008 and predicts future changes in the algae bloom situation. The Delft3D modelling tool was used to build thehydro... Autori: Arthur Mynett, Chao Yue, Ioana Popescu, Leo Postma, Quan Pan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26037
EDITORIAL - A SPECIAL ISSUE DEDICATED TO ACHIEVEMENTS AND PROSPECTS IN HYDROTECHNICAL, GEODESY AND ENVIRONMENTAL ENGINEERING
Environmental Engineering and Management Journal › Vol. 12 › Nr. 4 In 2012, the Faculty of Hydrotechnics,Geodesy and Environmental Engineering of The"Gheorghe Asachi" Technical University of Iasi,Romania celebrated 50 years of education in the fieldof hydraulic engineering at the Polytechnic Instituteof Iasi.In 1948, in the same time with the EducationReform in Romania, in Galati, the Faculty ofHidrology was founded. At the same time, studentswho were attending the Rural EngineeringSpecialization in Bucharest were also transferred tothe new established Faculty.... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26048
CHARACTERIZATION OF CERTAIN SOIL PROCESSES USING SOFTWARE-BASED MODELING
Environmental Engineering and Management Journal › Vol. 12 › Nr. 4 AbstractSimulations using computer models require detailed knowledge of all processes in the soil. Mohid Land is an important modelingprogram developed by a research team from Lisbon. It is a continuous, distributed, variable time step watershed that is grouping 4compartments and water moves through them. In this paper, the authors discuss the procedure applied for modeling using Mohidprogram and the results obtained during simulation of the behaviour of a type of soil.... Autori: Adriana N. Unguraşu, Cristina E. Iurciuc, Daniela F. Anei, ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26049
NUMERICAL MODELLING OF CHLORINE DISTRIBUTION IN AN URBAN WATER SUPPLY SYSTEM
Environmental Engineering and Management Journal › Vol. 12 › Nr. 4 AbstractA simplified numerical model of the water distribution network of a medium sized town (with 30,000 inhabitants), of elongatedshape, was implemented in EPANET. The decay of chlorine residual concentration in the above mentioned network was studied,using the extended time analysis capabilities of EPANET, for a 3 days period. The water supply system, composed of one tank, 86pipes and 52 nodes is driven by gravity. The chlorine is injected at the tank with a constant concentration amount. Th... Autori: Andrei-Mugur Georgescu, Sanda-Carmen Georgescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26054
MODELING THE IMPACTS OF HUMAN ACTIVITIES ON WATER QUALITY OF JIJIA RIVER
Environmental Engineering and Management Journal › Vol. 12 › Nr. 4 AbstractQuality of water bodies is influenced by their ability to self-clean and disperse the existing substances in water originating fromnatural or anthropogenic sources. Creating mathematical models, using design software and simulation, in terms of surface waterquality monitoring, are standard design and interpretation of studies necessary for rational management of water resources. Andwe must respect the concept of "sustainable development. In this paper we highlight this by modeling data ... Autori: Florentin Nacu, Ion Giurma, Valentin Boboc ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26056
SIMULATIONS FOR INCLUDING THE ENVIRONMENTAL TAX IN MOTOR LIABILITY INSURANCE
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
Abstract
Nowadays, all over the world, the car transport sector is one of the main factors responsible for the Greenhouse Gas Emissions.
The current systems of emission taxation do not take into consideration the distance travelled by cars; therefore, they are not fully
compliant with the polluter pays principle. In addition to the produced inequality, these systems do not encourage the reduction
of the distances travelled annually (with possible favorable effects on pollution an... Autori: Cristian-Mihai Dragos ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26120
MATHEMATICAL MODELING OF THERMAL DESORPTION USING LINEAR REGRESSION ANALYSIS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 2
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
ANALYSIS AND MODELLING OF THE SOLUBILITY OF BIOGAS COMPONENTS IN WATER FOR PHYSICAL ABSORPTION PROCESSES
Environmental Engineering and Management Journal › Vol. 12 › Nr. 1
Abstract
Biogas can be used as a renewable and green energy source by upgrading to natural gas. Water scrubbing, which is one of the
most widely-applied upgrading technologies, involves an accurate knowledge of the solubility of the main biogas components in
water, which is essential to the design and optimization of the biogas upgrading process.
In this work, we use several thermodynamic models available in the Aspen Plus software modeling environment to calculate the
solubilit... Autori: Petronela Cozma ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26148
RISK ANALYSIS OF HYDRAULIC ENGINEERING CONSTRUCTIONS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 9 AbstractAny hydraulic engineering construction project is a complex open system with large investment, long construction period,complex internal structure and numerous participants, subject to restrictions of time, resource, environment and other conditions.In this paper, the analytic hierarchy process principle and method were used to establish three-layer structure system ofagricultural hydraulic engineering construction, while risks of some agricultural hydraulic engineering construction were... Autori: Shi-Bao Lu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26159
SIMULATION STUDY ON WATER-PRESERVED MINING IN MULTIEXCAVATION DISTURBED ZONE IN CLOSE-DISTANCE SEAMS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 9 AbstractWith the adoption of lab physical simulation, this paper has studied the moving characteristics of overlying strata and thedevelopment rules of water-flowing fractured zone in multi-excavation disturbed zone in close-distance seams, and analyzed thefeasibility of water-preserved mining in multi-excavation disturbed zone. The experiment result has showed that under thegeological conditions of Suancigou Coal Mine, after the upper slicing mining of upper-6 coal seam, the development height ... Autori: Liqiang Ma ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26173
INVESTIGATION OF THE RECOVERY EFFICIENCY OF METHANE USING VERTICAL WELLS OPERATING IN LANDFILLS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 9 AbstractMethane production and concentration from six cells were investigated in two landfills in China. Long-term monitoring tests wereconducted to evaluate the methane recovery efficiency of active wells. Results showed that the recovery efficiency of a wellsdistribution simulation method was 75.6% to 83.5%, which was much higher than 50.1% to 53.6% when considering the EPAmethod in the EST (Ecological Sludge Evapotranspiration Technology) cover structure. The recovery efficiency of methane in... Autori: Qiang Xue ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26174
DYNAMIC SIMULATION OF CHINAS CARBON INTENSITY AND ENERGY INTENSITY EVALUATION FOCUSING ON INDUSTRY AND ENERGY STRUCTURE ADJUSTMENTS BY 2020
Environmental Engineering and Management Journal › Vol. 12 › Nr.10 AbstractAlong with the rapid economic development of China, the large amount of carbon dioxide (CO2) emission has become constrainton future sustainable development. The Chinese government has established a series of policies to come with the high CO2-emission resulting from economic development with the target to reduce its carbon intensity (CO2-emissions per unit of grossdomestic product (GDP)) by 40-45%, and to decrease the energy intensity (energy consumption per unit of GDP) by 20% by theye... Autori: Feng Xu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26181
EXPERIMENTAL INVESTIGATION AND CFD SIMULATION OF THE HYDRODYNAMIC AND MASS TRANSFER CHARACTERISTICS IN A SPLIT-CYLINDER AIRLIFT REACTOR CONTAINING PETROLEUM-WATER MICRO-EMULSIONS
Environmental Engineering and Management Journal › Vol. 12 › Nr.12 AbstractIn this article, hydrodynamic parameters and overall Oxygen mass transfer coefficient of petroleum based micro-emulsions in anairlift reactor were investigated. Four different petroleum-in-water micro-emulsion systems containing kerosene, heavy naphtha,light naphtha and diesel as oil based were used with concentrations of 3% and 7 % (v/v). The experimental data were supportedby simulation results obtained from the Computational Fluid Dynamics (CFD) method. The CFD was properly able to si... Autori: Mostafa Keshavarz Moraveji ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26234
ENERGY EFFICIENCY LANDSCAPES: AN ENERGY EFFICIENCY VISUAL TOOL FOR SUPPORTING DECISION MAKING IN BUILDINGS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 1 AbstractEnergy efficiency in buildings is a key issue in achieving sustainable development. Many decision support methodologies andtools have been developed, mainly based on energy consumption measurements or simulations and rules designed by experts toconstruct Building Energy Management Systems. An extension of this information from raw consumptions to energy efficiency isrequired. In addition, a visual depiction of this information with temporal and spatial resolution, applied to the differen... Autori: Mark Richard Wilby ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26259
OPTIMIZATION OF ANAEROBIC BAFFLED REACTOR (ABR) USING ARTIFICIAL NEURAL NETWORK IN MUNICIPAL WASTEWATER TREATMENT
Environmental Engineering and Management Journal › Vol. 13 › Nr. 1 AbstractThis study is focused on simulating and optimizing design and configuration of anaerobic baffled reactor (ABR) by means ofartificial neural network (ANN). This approach is aimed to assess an efficient ABR performance in various operational conditionstreating municipal wastewater. For this purpose, to analyze comprehensively on a base of experimental data, the system isoperated in two pilots of 48 liters net volume made of 8 compartments. In 7 months, more than 130 sets of data are obtain... Autori: Gagik Badalians Gholikandi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26260
EVALUATION OF THE WIND INFLUENCE IN MODELING THE BLACK SEA WAVE CONDITIONS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 2 AbstractThe present work is focused on the importance of the resolution and accuracy of the wind fields in modeling waves in the Black Sea. Two different wind fields are considered for forcing the third generation spectral wave model SWAN. The wind data wave model results are compared against in situ measurements performed at the Gloria drilling unit and also against satellite data for a two-month period of wintertime at the beginning of 2002. Subsequently, the model simulations were extended ... Autori: Dorin Butunoiu, Liliana Rusu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26283
NUMERICAL AND EXPERIMENTAL STUDY ON THE THERMO-AERODYNAMIC BEHAVIOR OF A DOUBLE-SKIN GLAZED FAÇADE
Environmental Engineering and Management Journal › Vol. 13 › Nr. 4 AbstractThis paper presents a study of the thermoaerodynamic spectrum inside an asymmetrically heated vertical channel of a doubleskinfaçade. A double-skin façade is an envelope construction that consists of two transparent surfaces separated by an airchannel. The numerical modeling was developed using the Ansys-Fluent simulation software under conditions of forcedconvection, using a three-dimensional geometry and a k-ε standard turbulence model. Then, experimental tests were performedon ... Autori: Cătălin George Popovici, Cătălin Grigoraş, , Theodor Mateescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26332
MODELING AND SIMULATION OF VIRTUAL ENVIRONMENT SYSTEM OF COMPLEX COALMINE USING MULTI-AGENT TECHNOLOGY
Environmental Engineering and Management Journal › Vol. 13 › Nr. 5 AbstractInvestigating and exploring new methods of coal-mining environment has become a new project to resolve the safety of mineproduction. The virtual reality technology provides new ways and ideas for the safety of mine production, and the intelligence ofthe virtual environment is enhanced as the multi-agent is applied. Based on multi-agent technology and the investigation of themodeling approach of the virtual environment of the complex coal mine, a three-layer architecture model and the for... Autori: Chaoli Tang, Chunling Wang, Liguo Qu, Liuyi Ling ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26364
AIRBORN SOILS POLLUTION RISK ASESSMENT NEAR OPEN - CAST IRON ORE MINES
Environmental Engineering and Management Journal › Vol. 13 › Nr. 6 AbstractAccording to the study results, the level of soil pollution with heavy metals in the northern part of Kryvyy Rih iron ore basin(Kryvyy Rih district, Ukraine) reach to moderately threating. In the southern part of Kryvyy Rih basin (Shyroke district,Ukraine) the level of soil pollution was between two assessments: moderately threating and permissible. The results of thestudy on buffer capacity of usual black soils show that the tested elements can be arranged in the following descend... Autori: Mykola Kharytonov ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26389
MODELING AND SIMULATION OF POWER ACTIVE FILTERS FOR REDUCING HARMONIC POLLUTION USING THE INSTANTANEOUS REACTIVE POWER THEORY
Environmental Engineering and Management Journal › Vol. 13 › Nr. 6 AbstractThe paper presents the structure of an active parallel filter for reducing harmonic pollution and reactive power. The active powerfilter control is based on instantaneous reactive power theory. The control is made in the system of axes - , which use directand inverse transformation to obtain the equations from one system to another coordinate axes. The authors present the modelingof parallel active filter based on this theory and the simulation results in MATLAB-SIMULINK... Autori: Marius Marcu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26397
SIMULATED IMPACT OF ACID RAIN ON ORGANIC MATTER, PHOSPHORUS AND OTHER SOIL COMPONENTS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 6 AbstractAcid rain is a general term used to describe acid depositions, i.e. rain, fog and snow (known as wet deposition), as well as acidgases and particles (known as dry deposition). Acid rain is of particular environmental concern in Romania, as many soils havelately become acidic, causing serious damages to plants, animals and human beings. The purpose of this study is to evaluate bysimulation the impact of acid rain on a podzol sample taken from the Retezat National Park, a Romanian protecte... Autori: Clementina Moldovan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26399
ENVIRONMENTAL SOUNDNESS OF VIRTUAL SIMULATIONS FOR COAL BED DEGASSING PROCESSES
Environmental Engineering and Management Journal › Vol. 13 › Nr. 6 AbstractMining industry, by underground coal exploitations allows the release of important methane quantities in the atmosphere.Methane can be found stored both in coal deposits, as well as in sterile rocks from the proximity of coal beds. By carrying out thedegassing process in advance of the exploitation, there can be obtained at least three benefits simultaneously: a new source offuel for heating devices, methane emissions reduction and ventilation costs reduction.With the help of computer, s... Autori: Nicolae-Ioan Vlasin ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26407
COMPUTERIZED SIMULATION OF MINE VENTILATION NETWORKS FOR SUSTAINABLE DECISION MAKING PROCESS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 6 AbstractThe simulation of different situations that may occur in the operation of the mine ventilation network is performed on its virtualmodel, developed and optimized using dedicated software. Depending on the chosen scenario, on the network model are applieda number of changes (addition of new ventilation workings, addition / removal of branches and nodes, changes in aerodynamicparameters: pressure, air flow driven by the fan etc.), the ultimate goals being: to assess how the new model obtain... Autori: Marius Cornel Șuvar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26408
SENSITIVITY ANALYSIS FOR URANIUM SOILS DECONTAMINATION USING A MONTE CARLO SIMULATION
Environmental Engineering and Management Journal › Vol. 13 › Nr. 7 AbstractThe washing method for uranium contaminated soils using three different reagents was investigated. Experimental data havebeen obtained for four types of soils, which have been characterized in terms of particle size distribution, as well as structure andchemical composition. Thus, the decontamination degree for each type of soil and reagent respectively has been measured.Subsequently, the decontamination process has been simulated using an artificial neural network. Based on this neural ... Autori: Alexandru Woinaroschy ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26451
EVALUATION OF CONTROL TECHNIQUES APPLIED ON A WASTEWATER TREATMENT PROCESS WITH ACTIVATED SLUDGE
Environmental Engineering and Management Journal › Vol. 13 › Nr. 8 AbstractWastewater treatment processes with activated sludge are described in the specialized literature by complex models withnonlinear parameterization, such as for example Activated Sludge Model ASM1, ASM2 or ASM3. Under these conditions, thedesign of control structures using the state space representation is very difficult. Suitable techniques to approach the control ofthese processes are using control structures based on an input-output model or using control structures obtained without eve... Autori: Daniela Carp ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26470
DYNAMICS OF A RHIZODEGRADATION PILOT UNIT TREATING GROUNDWATER CONTAMINATED WITH BISPHENOL-A
Environmental Engineering and Management Journal › Vol. 13 › Nr. 9 AbstractBisphenol-A (BPA; 2,2-bis(4-hydroxyphenyl)propane) is a monomer used primarily in the production of polycarbonate andepoxy resins that has been reported to have estrogenic activity. The biodegradability of BPA has been previously investigated inseveral studies designed to simulate surface waters and biological wastewater treatment systems. However, there is littleinformation available about the phytoremediation of groundwater contaminated with BPA. Halophytic species are of specialintere... Autori: Margarita A. Petoussi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26493
SIMULATION OF BUILDING RENOVATIONS RETURN IN ENERGY PLUS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 11 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
HEATING DEGREE DAY IN HUNGARY
Environmental Engineering and Management Journal › Vol. 13 › Nr. 11 AbstractIn Central European countries, heating represents approximately 75% of the total energy use of a residential building, withaverage thermal characteristics of the envelope. The expected energy use can be determined using complex simulation programs,but an easier way is to use specific degree day values. Degree day values should be calculated as precisely as possible. At presentin Hungary, the degree day values that are used for simplified energy calculations were determined several decade... Autori: Zoltán Verbai ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26551
APPLICATION OF GIS TECHNIQUES FOR THE QUANTIFICATION OF LAND DEGRADATION CAUSED BY WATER EROSION
Environmental Engineering and Management Journal › Vol. 13 › Nr. 10 AbstractLand decay processes caused by erosion are very serious by their long term impact on the quality of soils, surface waters,environment and living standards. This article presents the results of a spatial erosion modelling. A new methodology is herebyproposed to estimate the soil losses caused by water erosion. The method is based on using GIS techniques, and its noveltyconsists in applying the mathematic calculation model on the pixel/ cell level, by using the overlay technique, which g... Autori: Gabriela Biali ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26559
A SIMULATION STUDY ON THE DIESEL ENGINE COMBUSTION PROCESS BASED ON THE FIELD-EFFECT ANALYSIS METHOD OF COMBINED COMBUSTION
Environmental Engineering and Management Journal › Vol. 14 › Nr. 1 Abstract
Based on the spray mixing field-effect analysis method, this paper has taken into consideration the variation in the distribution of
oxygen concentration in the combustion process and has put forward the combined combustion field-effect analysis method. The
method is applied to the matching study of a certain kind of diesel engine’s combustion chamber with air admission and fuel
injection parameters and can also be used to complete the simulation analysis and evaluation of mix... Autori: Xiang-Rong Li ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26634
CASE STUDY ON ENERGY EFFICIENCY OF BIOGAS PRODUCTION IN INDUSTRIAL ANAEROBIC DIGESTERS AT MUNICIPAL WASTEWATER TREATMENT PLANTS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 2 Abstract
Anaerobic digestion was analyzed as the biological process that converts the organic matter present in various types of wastes,
activated sludge from the wastewater treatment facilities respectively, into biogas. Latest advancements in the mathematical
modeling, simulation and control practices have helped in gaining a better insight of the process. In this paper, an energy
efficiency and techno-economical investigation of anaerobic digestion technology for the CHP cogeneration unit... Autori: Alexandrina Zuza ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26648
MAGNETIC CONTAMINATION OF ENVIRONMENT LABORATORY SIMULATION OF MIXED IRON OXIDES IMPACT ON MICROORGANISM CELLS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 3 Abstract
Magnetic contamination is considered more and more as a challenging issue related to biosphere pollution with magnetic
materials originating in natural and artificial sources (volcanic eruptions and respectively industrial activities that contributed to
iron and other metal compounds spreading in air, water and soil). Aiming to study the impact of magnetic metal ions such as iron
and cobalt on the metabolism of some environmental microorganisms, in this paper an experimental simulat... Autori: Lacramioara Oprica ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26675
MODELING ENVIRONMENTAL IMPACT OF CYBERNETIC TRANSPORTATION SYSTEM
Environmental Engineering and Management Journal › Vol. 14 › Nr. 5 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
NETWORK ANALYSIS FOR RESILIENCE EVALUATION IN WATER DISTRIBUTION NETWORKS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 6 Abstract
Resilience is meant in this paper as the capability of a networked infrastructure to provide its service even if some components
are failed: it depends both on net-wide measures of connectivity and the role of a single component. This paper has two
objectives: first to show how a set of global measures can be obtained using techniques from network theory, in particular how
the spectral analysis of the adjacency and Laplacian matrices allows us to obtain a characterization of global ... Autori: Antonio Candelieri ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26746
EXTREME RISK ASSESSMENT METHODOLOGY (ERAM) IN AVIATION SYSTEMS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 6 Abstract
The research is focused on the relationship between aviation systems and extreme terrorist events, the impacts of such events, and
the solutions to manage the associated risks on medium and long term. The development of predictive models for extremeasymmetric
events in aviation (EAEA) still represents an emerging direction of interdisciplinary research because not all
mechanisms and interactions are understood. The testing of models is difficult due to lack of data and interpretatio... Autori: Catalin Cioaca ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26762
DYNAMICS ANALYSIS OF A MICROBIAL FUEL CELL SYSTEM AND PID CONTROL OF ITS POWER AND CURRENT BASED ON THE CRITICAL PROPORTION DEGREE METHOD
Environmental Engineering and Management Journal › Vol. 14 › Nr. 8 Abstract
In this paper, the structure and working principles of a microbial fuel cell (MFC) are analysed, and a mathematical simulation
model of MFCs is established based on the electrochemical equation, kinetic equation and material balance equation of a MFC. A
simulation analysis and discussions are conducted in a MATLAB environment to investigate the effect of acetate concentration,
influent flow and external resistance on the performance of a MFC system. The simulation model is demonstra... Autori: Aimin An ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26803
RESEARCH ON SUPPLY CHAIN FUZZY-RANDOM MULTI-OBJECTIVE PROGRAMMING MODEL WITH CONSTRAINT OF CO2 EMISSIONS
› › Nr. 8 Abstract
The uncertain phenomenon is very complex and using only fuzzy or random variable cannot describe it appropriate. In addition,
low carbon is the requirement of the supply chain. In order to overcome those two issues, this paper describes the uncertain
phenomenon in supply chain design under fuzzy random environment and constraints on CO2 emission. It considers that the demand
rate is a fuzzy random variety, and builds a mixed integer optimization models featuring multiple products, m... Autori: Zhixue Liao ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26808
MODEL FOR LOSS ASSESSMENT DUE TO FLOOD IN THE LOWER YELLOW RIVER
Environmental Engineering and Management Journal › Vol. 14 › Nr. 8 Abstract
Large and frequent floods of the floodplain have caused huge loss to local residents in the lower reaches of the Yellow River. Since
1949, the population affected by the flood in the Yellow River has been about 8.87 million, and the submerged cultivated land area
has been about 25.6 million acres. In order to provide the basis for flood control and disaster mitigation, it is very important to
build a loss assessment model to evaluate flood damage. In this study, the relationship fun... Autori: Xianqi Zhang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26816
WASTE MANAGEMENT IN CIVIL ENGINEERING: A DYNAMIC FRAMEWORK
Environmental Engineering and Management Journal › Vol. 14 › Nr. 8 Abstract
The recycling and later use of construction and demolition waste (C&D waste) as construction materials present a strategic
inconvenience for many stakeholders involved in the sustainable construction. In some countries, the recycling percentage of C&D
waste is around 80% of the C&D generated. However, in other countries this percentage is much lower. This complexity requires
a better understanding of the recycling dynamic. In the specific case of Spain, the National Inte... Autori: Nuria Calvo ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26817
RESEARCH ON SUPPLY CHAIN FUZZY-RANDOM MULTI-OBJECTIVE PROGRAMMING MODEL WITH CONSTRAINT OF CO2 EMISSIONS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 8 Abstract
The uncertain phenomenon is very complex and using only fuzzy or random variable cannot describe it appropriate. In addition,
low carbon is the requirement of the supply chain. In order to overcome those two issues, this paper describes the uncertain
phenomenon in supply chain design under fuzzy random environment and constraints on CO2 emission. It considers that the demand
rate is a fuzzy random variety, and builds a mixed integer optimization models featuring multiple products, m... Autori: Zhixue Liao ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26824
MERGING EARTH OBSERVATION DATA, WEATHER PREDICTIONS, IN-SITU MEASUREMENTS AND HYDROLOGICAL MODELS FOR WATER INFORMATION SERVICES
Environmental Engineering and Management Journal › Vol. 14 › Nr. 9 Abstract
There is an increasing variety of hydrometeorological information sources available for operational water management. These
comprise in-situ measurements, Earth Observation, meteorological models, and hydrological models. The effective use of all
these information sources together is challenged by two aspects. First, there is an information and communication technology
(ICT) challenge of acquiring, processing, merging, and presenting the various data streams operationally. Secondly,... Autori: Isnaeni M. Hartanto ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26827
POLLUTION DETECTION ON THE CYBERWATER PLATFORM
Environmental Engineering and Management Journal › Vol. 14 › Nr. 9 Abstract
Following the implementation rules of EU INSPIRE Directive, we designed, developed and tested a system for pollution
detection, alert and pollution propagation simulation on the Cyberwater platform. We address the challenge of providing public
information about water quality parameters measured by Wireless Sensor Networks placed on the river shore. The system
provides pollution alerts based on the analysis made on the monitored water parameters. Furthermore, it is able to estimate t... Autori: Lucia Vacariu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26828
APPLICATION OF A WEB-BASED DECISION SUPPORT SYSTEM FOR WATER SUPPLY NETWORKS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 9 Abstract
Decision support systems (DSS) have been wildly developed in the recent decades, in various areas of decision making. In the
21st century, the advances in Information and Communication Technology (ICT) have brought the era of cloud computing, in
which network-distributed resources (simulation and optimization models, data, etc.) are integrated in decision support
applications. The aim of the present article is to present the application of web-based decision support systems (WBDSS) ... Autori: Quan Pan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26832
DATA SCIENCE AND ENVIRONMENTAL MANAGEMENT IN SMART CITIES
Environmental Engineering and Management Journal › Vol. 14 › Nr. 9 Abstract
Urban environments present unique opportunities for developing new system architectures and applications aligned with the
“Internet of things” paradigm. The data sources are still largely provided by physical sensors and technical devices, albeit a
significant role is already played (e.g. in environmental monitoring networks) by virtual or soft sensors provided by simulation
models, while a growing role is being played by human data generated thru participatory platforms... Autori: Francesco Archetti ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26833
INCLUDING SOLAR PANELS ON PARKING AREAS IN THE SUSTAINABLE DEVELOPMENT CONCEPT. WIND EFFECTS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 9 Abstract
Solar energy is one of the most important renewable resources due to its unique set of advantages. In urban configurations, wide
open spaces used for parking areas close to malls, stadiums and industrial areas become justified challenges in revaluating them
by placing solar panels on their wide roofs.
The paper is a first attempt that reflects the scientific interest in the particularities of wind action upon the solar panels sustained
by structural framed elements and which cover ... Autori: Elena Axinte ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26849
NUMERICAL SIMULATION OF THE OXYGENATION PROCESS IN A GROWING SUPERINTENSIVE FISH TANK
Environmental Engineering and Management Journal › Vol. 14 › Nr. 10 Abstract
Superintensive growth of fish in a controlled environment involves taking a series of measures to ensure the oxygen necessary to
provide optimal living conditions for stocks. Considering the fact that oxygen has a relatively low solubility in water, the
photosynthesis in basins does not occur and the rate of incoming water may be low, it is imperative to supplement the water with
oxygen. The paper presents theoretical researches on mathematical modelling and numerical simulation of ... Autori: Vasilica Ştefan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26871
HAZARDOUS PROPERTIES OF AMMONIUM NITRATE AND MODELING OF EXPLOSIONS USING TNT EQUIVALENCY
Environmental Engineering and Management Journal › Vol. 14 › Nr. 11 Abstract
The paper presents a study on the hazards associated with solid ammonium nitrate (AN) storage and handling, in particular the
hazard of explosion. Due to its flammable and explosive characteristics, AN is largely used as an explosive material in the
mining industry. Some specific problems encountered in the risk estimation are related to the determination of the explosive
power of the AN, which depends on several characteristics. The simulation results of AN explosion using differen... Autori: Zoltán Török ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26891
THE IMPACT OF SLOPE ON FIRE SPREAD SIMULATION
Environmental Engineering and Management Journal › Vol. 15 › Nr. 3 Every year a lot of hectares of forest are burn in Europe, especially in the south part of Europe, where the climate is hot and dry
during the summer. Last decades, with climate change, this part of the Europe becomes dryer and increase of the field fires is
observed. The same problems arise in northern America, Australia and other dry regions. A model field fire spread can have
several applications. The prevision of the fire front can help the fireman to optimize their work, and to reduce th... Autori: Stefka Fidanova ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26973
MEASUREMENTS OF O3, NOX AND VOCs DURING SUMMER IN BEIJING, CHINA
Environmental Engineering and Management Journal › Vol. 15 › Nr. 3 Measurements were taken for Ozone (O3) and its precursors simultaneously from June to August 2008 in Beijing. We analyzed
the spatial and temporal variability of O3 and its precursors and the roles of the precursors in O3 formation. The results suggest
that O3 mixing ratios are higher in rural areas than in urban areas. Highest mixing ratios of VOCs were alkanes, followed by
aromatics; alkenes and biogenics were present at lower mixing ratios. Because of their relatively high reactivities, ar... Autori: Junlin An ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26994
ASSESSMENT OF MINE VENTILATION SYSTEM RELIABILITY USING RANDOM SIMULATION METHOD
Environmental Engineering and Management Journal › Vol. 15 › Nr. 4 A mine ventilation system provides a fresh air flow to the underground workings in a coal mine. Such sufficient air volume can
dilute and remove noxious gases (typically NOx, SO2, CH4, CO2 and CO) and maintain a suitable working environment for coal
miners. On the other hand, a poor ventilation system often leads to serious consequences such as mine gas explosions, production
loss or higher operational costs. Hence, the functions of mine ventilation system are very important for an undergroun... Autori: Jianwei Cheng ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27008
USE OF THE HOTSPOT CODE FOR SAFETY AND SECURITY ANALYSIS IN NUCLEAR POWER PLANTS: A CASE STUDY
Environmental Engineering and Management Journal › Vol. 15 › Nr. 4 Accidents in spent nuclear fuel reprocessing plants are a critical issue for the safety of people, of operators and the environment,
as well as for the security of the plants. The purpose of this work is to demonstrate the possibility to use a free license code to
simulate radiological diffusion after an accident in these particular plants, in order to obtain a model which allows identifying
escape routes for the people potentially involved in the fallout. The authors performed a benchmark an... Autori: Mariachiara Carestia ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27015
MODELLING AND SIMULATION OF HEAT TRANSFER PROCESSES FOR HEAT EXCHANGERS USED IN WASTEWATER TREATMENT
Environmental Engineering and Management Journal › Vol. 15 › Nr. 5 The issues of global warming and reducing energy consumption led to an evolutionary progress of research to find as many
solutions as possible for solving these environmental issues. The need to ensure a sustainable energetic development while
achieving effective protection of the environment has led to the amplification of activities based on secondary energetic resources
combined with low energy consumption industrial technologies. In the present paper it is discussed how to recover thermal... Autori: Timea Gabor ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27030
PRELIMINARY ANALYSIS OF STURGEONS SWIMMING CAPACITY ABOVE THE BOTTOM SILL BY NUMERICAL SIMULATION. BALA BRANCH CASE STUDY
Environmental Engineering and Management Journal › Vol. 15 › Nr. 5 The need of hydraulic structures for the improvement of the navigation conditions on the Danube, between Calarasi and Braila
(km 375 and km 175), led to the development of studies regarding the environmental impact. The studies were made by
correlating the dynamic implementation of hydraulic works with the results of the environmental monitoring, biotic and abiotic
factors. The hydraulic works designed to be built-up on the Bala branch, raised issues regarding sturgeons’migration in thi... Autori: Alina-Florina Nicolae ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27036
EMISSION CHARACTERISTICS OF DOUBLE SWIRL COMBUSTION SYSTEM FOR A DIESEL ENGINE
Environmental Engineering and Management Journal › Vol. 15 › Nr. 7 Experimental research focus on the emission characteristics of a diesel engine employed a new combustion system-double swirl
combustion system (DSCS) is carried out. The influence of spray angle on diesel emission characteristics with DSCS is analyzed
by experimental and numerical method. Main emissions such as particulate matters (PM) and nitrogen oxidants (NOx) are
measured in diesel engine with DSCS and the original engine. Also, fuel consumption, combustion pressure, heat release rate are... Autori: Liwang Su ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27087
A FRACTIONAL FUZZY SIMULATION METHOD FOR PREDICTING DISSOLVED TOLUENE AND OXYGEN CONCENTRATIONS IN AQUIFERS UNDER MICROBIAL ATTENUATION
Environmental Engineering and Management Journal › Vol. 15 › Nr. 8 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
SIMULATION OF A STIRLING ENGINE USED FOR A MICRO SOLAR POWER PLANT: 0-D MODELLING, COMPARISON WITH 1-D MODELLING
Environmental Engineering and Management Journal › Vol. 15 › Nr. 8 The goal of this paper is to determine the characteristics of a Stirling engine able to be used by a micro-solar power plant as
energy conversion system. The purpose is to use solar energy as heat source and a Stirling engine because of its numerous
advantages, as its high (theoretical) efficiency. This work was made in collaboration with several industrials involved in the
project named MiCST, whom objective is to electrify remote villages in Africa. Results of a simple 0-D model built on
M... Autori: Nadia Martaj ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27116
ANALYSIS AND IMPROVEMENT TECHNIQUES FOR THE TRANSFER FUNCTION OF A PLANAR LOW PASS FILTER
Environmental Engineering and Management Journal › Vol. 15 › Nr. 12 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
SIMULATION AND CONTROL OF FLOODS IN A WATER NETWORK. CASE STUDY OF JIJIA RIVER CATCHMENT
Environmental Engineering and Management Journal › Vol. 16 › Nr. 3 Floods have long been the cause of severe human and economic loss. Structural measures are applied to minimize the consequences of these natural disasters. A potential mitigating approach is the design and implementation of a control strategy for the water network aimed to regulate the water flowing within the river catchment system. There are several tools that have the ability to model and forecast the flood events in water networks. However, some tools are limited in the ability of providing ... Autori: Phạm Thai Hòa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27278
ENVIRONMENTAL CARE FOR ROMANIAN OIL PAINTINGS. TECHNICAL EXAMINATION OF DEGRADATION PHENOMENA IN CANVAS TEXTILES
Environmental Engineering and Management Journal › Vol. 16 › Nr. 3 Paintings signed by Nicolae Grigorescu and Stefan Luchian, exponents of Romanian Modern Art were selected for a technical study on easel painting canvases. Both the physical integrity and the appearance of the artefacts derive mainly from the strength of the canvas and the physical and chemical characteristics of the fibres imparting their response to deterioration. In order to determine a deterioration pattern for canvases subjected to environmental stress, a simulation on flax fibres samples w... Autori: Maria Geba ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27292
COORDINATED FLOOD MANAGEMENT OF CASCADE RESERVOIRS - CASE STUDY: JIJIA RIVER
Environmental Engineering and Management Journal › Vol. 16 › Nr. 3 The purpose of the reservoir operation during flood period is to obtain the outflow hydrograph as flat as possible. Although simple in case of a unique reservoir, the problem becomes very complex for large systems with cascade reservoirs. Based on the well-known hydraulic software Mike Flood by DHI, a simulation-optimization model containing wave propagation equations, constraints related to the state or decision variables as well as an objective function were developed for obtaining optimal coo... Autori: Aurelian Florentin Draghia ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27295
AIR DISPERSION MODELLING AND SIMULATION IN AERATION TANKS
Environmental Engineering and Management Journal › Vol. 16 › Nr. 5 The necessary oxygen concentration for the biological process depends on the organic matter present in wastewater characterized by organic matter reaction rate with oxygen, k. This article highlights the impact of the reaction coefficient on oxygen dispersion in water. The first stage of the research led to the determination of the ratio between the coefficient of reaction and the coefficient of dispersion on the vertical of the tank as k/εz ϵ [0.066 - 0.79]. Starting from this rat... Autori: Corina Boncescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27298
EFFICIENT CHLORINATION SCHEDULE FOR A WATER DISTRIBUTION NETWORK WITH MULTIPLE PUMPING STATIONS
Environmental Engineering and Management Journal › Vol. 16 › Nr. 5 The present study proposes a chlorination schedule calibrated for the Drinking Water Distribution Network (DWDN) of Buzau - a medium sized city, in South-Eastern Romania. The numerical model of Buzau's DWDN was set up in EPANET, considering the main pipes of the network that interconnect 4 pumping stations and 45 booster stations (viewed here as end-users). The calibration of the numerical model was based on real-time recordings available for January and July 2014. The chlorination schedulin... Autori: Sanda-Carmen Georgescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27301
ENERGY EFFICIENT PIPE HEAT EXCHANGER FOR WASTE HEAT RECOVERY FROM EXHAUST FLUE GASES
Environmental Engineering and Management Journal › Vol. 16 › Nr. 5 This study presents an original method for waste heat recovery from exhaust flue gases using a heat pipe heat exchanger. For the proposed paper we analyzed using Autodesk Simulation CFD Software the operation of the originally designed heat pipe heat exchanger system in different hypothesis. For the complete analysis we realized a study case for a pizza restaurant building located in Iasi, Romania to prove the energy efficiency of the heat pipe heat exchanger unit. By applying our system, we ach... Autori: Andrei Burlacu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27305
OPTIMIZATION OF GLASS FIBERS USED AS DISPERSE REINFORCEMENT OF EPOXY POLYMER CONCRETE WITH FLY ASH
Environmental Engineering and Management Journal › Vol. 16 › Nr. 5 Construction industry uses a huge quantity of traditional and modern building materials which generally are produced to satisfy different demands, such as: resistant and safety requirements, friendly with the environment, architectural aspects etc. Researches must solve any requirements related to materials properties and offer a large diversity from which the proper solution must be considered. For improving the mechanical properties of polymer concrete, the use of fibers of different types is ... Autori: Vasilică Ciocan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27306
EXPERIMENTAL INVESTIGATION AND COMPUTATIONAL FLUID DYNAMICS (CFD) ANALYSIS OF AN ECO-FRIENDLY TURBINE
Environmental Engineering and Management Journal › Vol. 16 › Nr. 4 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
RESEARCH ON MINES RESCUE BRIGADESMENS TRAINING IN A NEW TRAINING FACILITY DESIGNED AND BUILT FOR CONFINED SPACES
Environmental Engineering and Management Journal › Vol. 16 › Nr. 6 Working in confined (limited) spaces represents a risk factor generating unwanted accidents or events, having an impact on human health. The success of intervention and rescue operations in toxic or chemical aggressive environments lies in optimal and efficient design of the training process for rescue personnel, which also includes rescue operations in confined spaces.
The paper presents the scientific research behind designing and building a complex training facility with different training t... Autori: George Artur Găman ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27353
DEVELOPMENT OF A DECISION SUPPORT SYSTEM BASED ON STOCHASTIC NONLINEAR OPTIMIZATION FOR PETROLEUM-CONTAMINATED SITE MANAGEMENT
Environmental Engineering and Management Journal › Vol. 16 › Nr. 7 In this study, a decision support system based on a stochastic optimization model under modeling uncertainty and parameter certainty (SOMUM-DSS) is developed for petroleum-contaminated sites management. The SOMUM-DSS incorporates scenario analysis, numerical simulation, multivariate analysis, nonlinear optimization within a decision support system. It provides an effective tool for decision makers to select the optimal remediation strategy. The developed SOMUM-DSS is then applied to a petroleum-... Autori: Qi Yang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27374
EFFECT OF FUEL TREATMENTS ON CROWN FIRE BEHAVIOR IN ALEPPO PINE FORESTS OF GREECE: A SIMULATION STUDY
Environmental Engineering and Management Journal › Vol. 16 › Nr. 7 This study models the potential effect of various fuel treatments on crown fire behavior by using two crown fire simulation models in Aleppo pine (Pinus halepensis Mill.) stands. Fuel complex characteristics that influence fire behavior were measured in a representative Aleppo pine stand in northern Greece, using standard surface and canopy fuel inventory methods. Nine different
fuel treatments (control, prescribed burning, controlled grazing, thinning without slash removal, thinning with slash... Autori: Ioannis D. Mitsopoulos ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27382
Environmental engineering and Management Journal No. 7
› › Nr. 4 • EXPERIMENTAL INVESTIGATION OF TEMPERATURE EFFECTS ON THE PARAMETERS OF PHOTOVOLTAIC PANELS
• CONCENTRATIONS OF CHROMIUM, CADMIUM AND NICKEL IN TWO CONSUMED FISH SPECIES OF PERSIAN GULF, IRAN
• IMPROVING THE ENERGY EFFICIENCY OF RESIDENTIAL BUILDINGS BY USING A DRAIN WATER HEAT RECOVERY SYSTEM
• ASSESSMENT OF METAL CONTAMINATION AND ECOLOGICAL RISK IN URBAN SOILS SITUATED NEAR A METALLURGICAL COMPLEX
• FINANCIAL DE... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27398
Environmental engineering and Management Journal No. 7
› › Nr. 4 EXPERIMENTAL INVESTIGATION OF TEMPERATURE EFFECTS ON THE PARAMETERS OF PHOTOVOLTAIC PANELS
• CONCENTRATIONS OF CHROMIUM, CADMIUM AND NICKEL IN TWO CONSUMED FISH SPECIES OF PERSIAN GULF, IRAN
• IMPROVING THE ENERGY EFFICIENCY OF RESIDENTIAL BUILDINGS BY USING A DRAIN WATER HEAT RECOVERY SYSTEM
• ASSESSMENT OF METAL CONTAMINATION AND ECOLOGICAL RISK IN URBAN SOILS SITUATED NEAR A METALLURGICAL COMPLEX
• FINANCIAL DEVELOPME... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27399
3-D REAL DAM RESERVOIR MODEL FOR SEASONAL THERMAL DENSITY FLOW
Environmental Engineering and Management Journal › Vol. 16 › Nr. 9 The efficient use of fresh water sources and proper modeling of the water quality can only be possible when flows in the dam
reservoir are well defined. Therefore, in this study, a hydrodynamics model of an actual dam reservoir in three dimensions for
simulating a real dam reservoir flows for summer season is created. The model is developed using nonlinear and unsteady
continuity, momentum, energy and k-ε turbulence model equations. In order to include the Coriolis force effect on the... Autori: Fatih Üneş ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27430
NUMERICAL SIMULATION OF INTERNAL MICROCLIMATE INSIDE A LIVESTOCK BUILDING
Environmental Engineering and Management Journal › Vol. 16 › Nr. 11 In the current work, a numerical model for the prediction of temperature, air velocity, relative humidity and ammonia distribution released by sheep and goats manure inside a naturally ventilated livestock building is presented. Given that noteworthy amount of gaseous pollutants are emitted by the agricultural and animal husbandry activities, the study of the indoor microclimate is essential to be investigated for the healthy growth of the breeding livestock. The developed numerical model is sat... Autori: Catherine Baxevanou ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27482
POLLUTION LOAD AND ECOLOGICAL REPLENISHMENT PLAN OF LIJIANG RIVER, CHINA
Environmental Engineering and Management Journal › Vol. 16 › Nr. 11 Lijiang River is the link of Guilin landscape and the golden waterway of Guilin tourism. With the development of social economy, the pollution problem of Lijiang River in recent decades has become more and more serious, which has aroused widespread concern and attention. However, the study on the reduction of river pollution load is seldom found reported until now. In this paper, the pollutant load of Lijiang River is estimated by equal standard pollution load method and the water pollution mode... Autori: Ronghui Li ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27490
OPTIMIZATION OF INCENTIVE CONTRACTS LEADING ENTERPRISES TO PARTICIPATE IN LOW-CARBON AGRICULTURAL DEVELOPMENT
Environmental Engineering and Management Journal › Vol. 17 › Nr. 1 Based on principal-agent model, this paper tries to solve the asymmetric information problem between the investor and agriculture leading enterprises. A mathematical model of the incentive contract is designed, on the basis of which it is investigated the design of the incentive contract under different risk preference, the change of the income when implementing the
incentive contract and the changing trends of the contractors’ costs when an observable variable is included in the incentiv... Autori: Xitai Sheng ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27547
PASSENGER CAR DEPENDENCY AND CONSEQUENT AIR POLLUTANTS EMISSIONS IN IASI METROPOLITAN AREA (ROMANIA)
Environmental Engineering and Management Journal › Vol. 17 › Nr. 4 Urban expansion, often seen as an indicator of economic growth and a possible response to housing crisis in big cities, is the main driver for carbon emissions in the metropolitan area due to higher values of household income, vehicle ownership and home size. The transport related pollution includes over 200 different compounds: besides CO2 emissions, CO, NOx, BTX and dust resulting from exhausting processes, from abrasive wear of brakes, tires and road surfaces. The expansion of the urban areas... Autori: Lucian Roșu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27560
BEHAVIOUR OF OZONATION BY-PRODUCTS DURING ADVANCED DRINKING WATER TREATMENT WITH PEARL RIVERWATER
Environmental Engineering and Management Journal › Vol. 17 › Nr. 5 Simulation experiments were conducted to investigate the behaviour of ozonation by-products and the removal of organic matter in the treatment of the Pearl River raw water. The treatment processes include pre-ozonation, conventional treatment processes (coagulation/sedimentation and sand filtration), post-ozonation and granular activated carbon (GAC) filtration. Treatment efficiency of each unit process was evaluated by using several parameters such as permanganate index (CODMn), ultraviolet abs... Autori: Yue Wu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27580
ECO-EFFICIENT DECISION SUPPORT MODEL OF SOLID WASTE RECYCLING
Environmental Engineering and Management Journal › Vol. 17 › Nr. 5 This paper describes an eco-efficiency decision support model for of end-of-life solid waste recycling. A holistic approach in balancing environmental pollution concern and waste recycling is required. A system dynamic model is based on mathematical model of the supply chain, and decision-making analysis is supported with the online spreadsheets. A criterion function-based modelling is used as a core model for simulation that uses net present value-based metrics of the supply chain activities. T... Autori: Stanislav Avsec ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27591
INDIRECT ENVIRONMENT-RELATED EFFECTS OF ELECTRIC CAR VEHICLES USE
Environmental Engineering and Management Journal › Vol. 17 › Nr. 7 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
STUDY OF NITROGEN FORMS IN SEASONAL DYNAMICS AND KINETICS OF NITRIFICATION AND DENITRIFICATION IN PRUT AND NISTRU RIVER WATERS
Environmental Engineering and Management Journal › Vol. 17 › Nr. 7 The presence of nitrogen in its reduced forms serves as an indicator of natural aquatic system degradation. The excessive concentrations of nitrogen in reduced forms (NH4+, NO2-) found in the sections of the the Shireutsi (of the Prut River) and the Olaneshti (of the Nistru River) prove that these sites are areas to focus efforts on improving water quality. Laboratory simulations indicate a good environmental buffer action of natural waters to potential pollution in Sculeni and Ungheni sections ... Autori: Petru Spataru ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27698
EVALUATION OF HUMAN HEALTH RISKS ASSOCIATED WITH PESTICIDE DIETARY INTAKE - AN OVERVIEW ON QUANTITATIVE UNCERTAINTY ANALYSIS
Environmental Engineering and Management Journal › Vol. 17 › Nr. 9 The probabilistic estimation and the risk analysis of the exposure to pesticides through the ingestion of plants and food products is an important task for ensuring informed decision making and appropriate consumer protection. Monte Carlo-based methods are powerful tools in this regard, allowing for the empirical estimation of the distribution of exposure values, as well as for carrying out a corresponding uncertainty analysis. Such findings are important for assessing the exposure risk for mult... Autori: Petronela Cozma ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27754
SYSTEMS FOR RAINWATER HARVESTING AND GREYWATER REUSE AT THE BUILDING SCALE: A MODELLING APPROACH
Environmental Engineering and Management Journal › Vol. 17 › Nr. 10 In the light of water shortages, frequently affecting many regions worldwide, domestic rainwater harvesting, and greywater reuse systems represent an alternative source of water. This study fits this framework providing a hydraulic/hydrological model developed by means of the EPA’s Storm Water Management Model. The model has been applied to a case study, which consists of an apartment building located in the city of Bologna and equipped with a hybrid rainwater-greywater recycling system. C... Autori: Sara Simona Cipolla ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27789
NUMERICAL SIMULATION OF RELATIVE HUMIDITY IN A MASONRY WALL APPLYING THREE DIFFERENT WATERPROOFING MEMBRANES
Environmental Engineering and Management Journal › Vol. 17 › Nr. 12 The analysis by numerical simulations can be applied to building materials subjected to different climatic conditions to envisage the influence of environmental factors in terms of drying time, water absorption and thermal performance of materials. Currently there is a wide variety of new building materials used for insulation, waterproofing and rehabilitation, each contributing in a specific way to constructions improvement during their service life. In time, every building is subjected to degr... Autori: Alexandra Alisa Găină ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27863
FLUE GAS DEDUSTING IN VENTURI SCRUBBERS AT THERMAL POWER PLANTS
Environmental Engineering and Management Journal › Vol. 17 › Nr. 11 In this paper, an improved engineering model and analysis techniques are presented of the fly ash particles coagulation with droplets in Venturi tubes of industrial scale, based on spatial variation of the collection efficiency of particles on individual droplets, accounting for spray water flow polydispersity and particle size distribution, which allows to define optimal droplets size and spray water flow rate at different modes of thermal power units operation. The model is validated with the ... Autori: Igor Volchyn ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27836
A SUPPORT VECTOR REGRESSION AND MONTE CARLO SIMULATION - BASED INTERVAL TWO-STAGE PROGRAMMING FOR ENVIRONMENTAL SYSTEMS PLANNING IN BEIJING
Environmental Engineering and Management Journal › Vol. 18 › Nr. 2 In this research, a support vector regression and Monte Carlo simulation-based interval two-stage programming (SVRMC-ITSP)
method was developed through integrating support vector regression (SVR) and Monte Carlo simulation into a two-stage intervalstochastic
programming (TISP) framework. The developed SVRMC-ITSP method can effectively tackle dynamic, interactive and
uncertain characteristics of municipal solid waste (MSW) management systems. It can also be used to simulate waste generation
r... Autori: Chao Dai ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27905
MODELLING HIGH RATE P-REMOVAL IN A TWO-STAGE PILOT SCALE ALUM SLUDGE BASED CONSTRUCTED WETLAND SYSTEM
Environmental Engineering and Management Journal › Vol. 18 › Nr. 2 A system dynamics (SD) process-based simulation model was developed using an object-oriented environment to simulate
phosphorus (P) transformations in a two-stage pilot scale Dewatered Alum Sludge Cake (DASC) based Constructed Wetlands
(CW), which is operated from February 2009 to January 2010 to treat relatively high concentration animal farm wastewater.
Structural Thinking Experiential Learning Laboratory and Animation (STELLA v9.1.4) conceived on the principles of SD was
used for the deve... Autori: Lordwin Jeyakumar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27907
OBTAINING A GUIDE OPERATOR OF WASTEWATER TREATMENT BY SBR PROCESS USING SIMULATION AND SENSITIVITY ANALYSIS
Environmental Engineering and Management Journal › Vol. 18 › Nr. 2 The main aim of this paper was to obtain, on the base of sensitivity analysis, a guide for correct operation of the sewage treatment
plant at Eforie Sud which uses sequential batch reactors (SBRs). For this purpose several original procedures were realized. An
initial regression model was obtained using the SBR simulation with STOAT 5.0 software, confronted with the process data
collected on-line. As it was expected, the range of these data was small, corresponding to the usual domain of SBR ... Autori: Cristina Singureanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27923
COMPUTATIONAL SIMULATION MODEL FOR DYE ADSORPTION IN NANO TIO2 FILM FOR THE APPLICATIONS IN DYE SENSITIZED SOLAR CELLS
Environmental Engineering and Management Journal › Vol. 18 › Nr. 3 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
Environmental engineering and Management Journal No. 3
› Vol. 14 › Nr. 4 • ENVIRONMENTAL CHANGES IN NORTH-EASTERN ROMANIA A TRIGGER FACTOR FOR LYME DISEASE
• HYDROGEOCHEMISTRY AND ENVIRONMENTAL ISOTOPE COMPOSITIONS AND THEIR EVOLUTION IN GEOTHERMAL GROUNDWATER IN YIZHANG, HUNAN PROVINCE, CHINA
• CONSTRUCTION OF A BIOGAS HEAT STORAGE GREENHOUSE ECOSYSTEM UNDER THE CONTEXT OF WATER POLLUTION RESULTING FROM LIVESTOCK BREEDING
• ENVIRONMENTAL NOISE: HEALTH AND POLICY - AN UP TO DATE MINIREVIEW &nb... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27946
Environmental engineering and Management Journal No. 3
› Vol. 14 › Nr. 4 • ENVIRONMENTAL CHANGES IN NORTH-EASTERN ROMANIA A TRIGGER FACTOR FOR LYME DISEASE
• HYDROGEOCHEMISTRY AND ENVIRONMENTAL ISOTOPE COMPOSITIONS AND THEIR EVOLUTION IN GEOTHERMAL GROUNDWATER IN YIZHANG, HUNAN PROVINCE, CHINA
• CONSTRUCTION OF A BIOGAS HEAT STORAGE GREENHOUSE ECOSYSTEM UNDER THE CONTEXT OF WATER POLLUTION RESULTING FROM LIVESTOCK BREEDING
• ENVIRONMENTAL NOISE: HEALTH AND POLICY - AN UP TO DATE MINIREVIEW &nb... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27947
MODELLING THE PISTON EFFECT IN SUBWAY TUNNELS USING FIRE DYNAMICS SIMULATOR
Environmental Engineering and Management Journal › Vol. 18 › Nr. 4 The influence of the piston effect in subway tunnels depends on a train speed, the geometry of a tunnel and a train, the types of air
flow caused by mechanical ventilation and other variable characteristics. Tables and graphs of changes in air flows generated by
the effect of the piston are presented depending on the speed of a train and the degree of fill rate of a tunnel. It is noted that the
piston effect is characterized by two phases. At the first stage, the piston effect and the process... Autori: Omar Lanchava ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27959
NEW TOOLS FOR ESTIMATING THE EXTENT OF HAZARDOUS AREAS GENERATED BY GAS LEAK EXPLOSIONS
Environmental Engineering and Management Journal › Vol. 18 › Nr. 4 The current paper is an overview on previous and ongoing research carried out by the authors concerning the use of Computational
Fluid Dynamics for the accurate classification of hazardous Ex areas generated by flammable gases, for the optimization of
computational simulation of air-methane mixture explosions by using ANSYS CFX and FLUENT and for calibrating computational
simulations of gas explosions using the Schlieren effect. These research works containing analytic studies have led to the... Autori: Vlad Mihai Păsculescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27962
ANALYSIS OF HUMAN BEHAVIOR AND EVACUATION IN BUILDING FIRES USING COMPUTER EVACUATION MODELS
Environmental Engineering and Management Journal › Vol. 18 › Nr. 4 Human behavior in critical situations is at the core of all concerns about the fire safety of buildings, regardless of their destination.
The way in which the human caught in the fire reacts to the risk factor to which he is exposed, his behavioral response to the direct
action of the fire, or his psychological response to the effect of the fire (temperature, smoke opacity, reduced visibility, exposure to
toxic combustion gases), are all factors that can drastically influence the required saf... Autori: Marius Cornel Şuvar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27965
RESEARCH ON AQUATIC POLLUTION LEVEL OF MALEIA RIVER BY SIMULATION IN COMPUTATIONAL FLUID DYNAMICS
Environmental Engineering and Management Journal › Vol. 18 › Nr. 4 Watercourses that transit rural / urban areas are susceptible to the phenomenon of aquatic pollution due to various types of polluting
species. The important issues of river pollution and of polluting species dispersion, require an approach with predictive tools (models
for transport of polluting species) which can evaluate the performance of depollution measures/actions to reduce pollution and to
take optimal management decisions. Thus, from January 2017 to May 2017, a monitoring investigati... Autori: Lorand Toth ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27967
Environmental engineering and Management Journal No. 3
› Vol. 14 › Nr. 6 • ENVIRONMENTAL CHANGES IN NORTH-EASTERN ROMANIA A TRIGGER FACTOR FOR LYME DISEASE
• HYDROGEOCHEMISTRY AND ENVIRONMENTAL ISOTOPE COMPOSITIONS AND THEIR EVOLUTION IN GEOTHERMAL GROUNDWATER IN YIZHANG, HUNAN PROVINCE, CHINA
• CONSTRUCTION OF A BIOGAS HEAT STORAGE GREENHOUSE ECOSYSTEM UNDER THE CONTEXT OF WATER POLLUTION RESULTING FROM LIVESTOCK BREEDING
• ENVIRONMENTAL NOISE: HEALTH AND POLICY - AN UP TO DATE MINIREVIEW &nb... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27968
LAB SIMULATION SYSTEM FOR CRITICAL SITUATIONS OBSERVED WITH THERMOVISION EQUIPMENT
Environmental Engineering and Management Journal › Vol. 18 › Nr. 5 The paper presents an experimental system enabling a laboratory simulation of several types of critical situations and aggravating
circumstances (sources of smoke, fog, rain, heat) using a thermovision equipment. The critical situations taken into consideration
are those caused by human negligence or natural disasters such as earthquakes. Aggravating circumstances are those considered as
being limit. The proposed thermovision equipment with appropriate accessories must highlight and determine... Autori: Catalin Spulber ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27997
PRINCIPLES AND TECHNOLOGY FOR THE SUBSTITUTION OF STRIP COAL PILLARS WITH COAL REFUSE
Environmental Engineering and Management Journal › Vol. 18 › Nr. 6 This paper analyzes the fundamental principles of the substitution of strip coal pillars with coal refuse through the combination of
theoretical analysis, physical simulation and numerical calculation with engineering practice. We propose to lay out roadways
through strip coal pillars in a reasonable manner so as to produce a “coal-rock bearing mass” consisting of stowboards (i.e.,
roadways backfilled with coal refuse) and coal pillars that substitute the original strip coal pilla... Autori: Qiang-ling Yao ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28014
STUDY ON THE INFLUENCE OF MULTI-SOURCE RECHARGE ON GROUNDWATER ENVIRONMENT
Environmental Engineering and Management Journal › Vol. 18 › Nr. 6 Groundwater recharge is an effective method to solve the groundwater overexploitation. In this study, the method of numerical
simulation is used to discuss the environmental change of groundwater in the process of multi-source recharge. The results of
multiple water sources including local regenerated water source, wetland water source and South-to-North water source show that
the cumulative loss of groundwater resources in Mihuaishun area in 2007 ~ 2016 reaches -1.784 × 109 m3. The inf... Autori: Dasheng Zhang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28024
A MULTI-OBJECTIVE PARTICLE SWARM OPTIMIZATION ALGORITHM BASED ON HUMAN SOCIAL BEHAVIOR FOR ENVIRONMENTAL ECONOMICS DISPATCH PROBLEMS
Environmental Engineering and Management Journal › Vol. 18 › Nr. 7 Due to emissions from power station using fossil fuels, the decrease of existing pollution as well as of operational costs should be
taken into consideration, when resolving environmental economic dispatch problems. In this research, we will evidence that
nonlinear constraints of generating units, forbidden regions, and ramp-rate of generating units will reduce operational costs and
environmental pollution, to achieve environmental economic dispatch effectiveness, by employing an improved mul... Autori: Daqing Wu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28045
ESTIMATING THE POTENTIAL EVAPOTRANSPIRATION (PET) USING SATELLITE IMAGERY IN ARID LANDS
Environmental Engineering and Management Journal › Vol. 18 › Nr. 9 Evapotranspiration is one of the main sources of water loss in arid regions. Although FAO Penman-Monteith (FAO-PM) method is one of the accurate method to estimate potential evapotranspiration (PET). Nevertheless, it is a point-based method and requires several weather data such as radiation, wind speed, air humidity and temperature, which is not available in all regions. Therefore, this study is aimed to estimate PET equivalent to FAO-PM model using satellite data and Priestly-Taylor (PT) model... Autori: Azam Sadat Hosseini ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28062
PROPAGATION CHARACTERISTICS AND ENVIRONMENTAL IMPACT OF COAL DUST EXPLOSION
Environmental Engineering and Management Journal › Vol. 18 › Nr. 9 Dust explosions are one of the main causes of mining disasters. To avoid them, it is important to understand how they are propagated. In the study reported here, computational fluid dynamics software was used to model a 3D diagonal pipe network then simulated a dust explosion at its inlet to examine its propagation characteristics. The initial conditions, boundary conditions and parameter settings were detailed description in the simulation to analyze possible propagation characteristics, assess... Autori: Baichao Song ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28067
A NEW TOOL FOR THE EVALUATION OF CO2 EMISSIONS FROM ROAD TRAFFIC: A CASE STUDY IN CLUJ-NAPOCA, ROMANIA
Environmental Engineering and Management Journal › Vol. 18 › Nr. 9 In the past years, there has been great interest in developing tools for an effective management including the evaluation of the
impact of different policies on decreasing greenhouse gas emissions (CO2) and other transport pollutant-related emissions,
especially in the urban areas. This paper represents a first attempt to study a new approach to identify criticalities of pollutant
emissions associated with road traffic in urban areas. The tool we propose concerns the development of an emissio... Autori: Rozalia Melania Boitor ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28070
SUSTAINABLE MANAGEMENT OF SEDIMENTARY RESOURCES: A CASE STUDY OF THE EGADI PROJECT
Environmental Engineering and Management Journal › Vol. 18 › Nr. 10 Multiple activities carried out on coastal areas expose marine sediments to contamination and their management has a great socio-economic importance with a high impact on economic development of coastal areas. However, there is an increasing shift towards the use of more sustainable approaches for managing ‘contaminated’ sediments. Using a case study of the Favignana Habour in Italy, this paper evaluates three approaches for the management of these sediments. The results of simulatio... Autori: Sergio Cappucci ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28082
A SYSTEM DYNAMICS-BASED ECONOMIC PERFORMANCE SIMULATION OF CONSTRUCTION WASTE REDUCTION MANAGEMENT: EFFECTIVE APPLICATION OF PREFABRICATION
Environmental Engineering and Management Journal › Vol. 18 › Nr. 11 Cost effective management of construction and demolition waste (C&DW) has become a serious issue with increased construction activity and modern urban lifestyle which is damaging environment, eating up resources and causing rapid land use changes. These factors have influenced the construction industry significantly and therefore gained the practitioners’ attention in recent past. New strategies of C&DW reduction management are being devised and reported; this research aims at prov... Autori: Ahsen Maqsoom ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28096
HEAVY METALS TRANSPORT FROM WASTEWATER SPILLS INTO A COASTAL AQUIFER AND SEAWATER
Environmental Engineering and Management Journal › Vol. 18 › Nr. 12 Wastewater generated from industrial activities has delivered elevated heavy metal concentrations into fresh and salted aqueous systems. Herein, the migrated trace metals were studied from their initial location through a coastal aquifer up to the seawater. The experiments were carried out at lab scale using a sandbox with glass beads and two attached chambers containing natural groundwater and seawater. The study focused on the transport behaviour of heavy metals such as copper, zinc and lead i... Autori: Abdelkader Tawfeek Ahmed ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28111
STUDYING DEFORESTATION AND CHANGES IN FOREST LAND COVER USING AGENT-BASED MODELLING. CASE STUDY: TONKABON, IRAN
Environmental Engineering and Management Journal › Vol. 18 › Nr. 12 Deforestation and changes in forest cover are subject to the effects of many factors: economic, social, cultural, political, and environmental and their interactions. To assess these factors, one should necessarily know their nature and then model them. Nowadays many models have been introduced to explore deforestation, however most of them are based on past events and do not pay enough attention to socioeconomic factors. Moreover, considering the future is sometimes absent in those models. The ... Autori: Maryam Jadidi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28112
MODELING OF A RECTANGULAR CHANNEL MONOLITH REACTOR FOR SORPTION-ENHANCED WATER-GAS SHIFT
Environmental Engineering and Management Journal › Vol. 19 › Nr. 2 As CO2 concentration levels in the atmosphere are steadily reaching a point of no return, it is paramount that actions are taken towards mitigating emissions by improving the efficiency of existing processes. Sorption-enhanced water-gas shift (SEWGS) combines the water-gas shift reaction with in-situ adsorption of CO2 on potassium-promoted hydrotalcite (K-HTC). This enables a
direct conversion of syngas into separate hot streams of H2 at feed pressure and CO2 at regeneration pressure, making th... Autori: Vlad-Cristian Sandu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28149
OPTIMIZATION OF CHLOROPHYLL A REMOVAL FROM WASTEWATERS USING BIO-INSPIRED ALGORITHMS
Environmental Engineering and Management Journal › Vol. 19 › Nr. 2 The bio-inspired algorithms are versatile approaches that can be applied to a variety of problems. However, their efficiency is influenced by a multitude of characteristics such as quality of final solution, consumed computational resources, diversity management, convergence, complexity of the problem being solved. Consequently, the issue of choosing the best approach for a particular problem is a difficult task. In this work, the performance of two bio-inspired algorithms, Differential Evolutio... Autori: Elena Niculina Dragoi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28159
PACKED COLUMN SIMULATION FOR CO2 CHEMISORPTION IN ACTIVATED SOLUTIONS
Environmental Engineering and Management Journal › Vol. 19 › Nr. 2 Apart of new equipment’s development such as absorption columns with higher efficiency, for chemical industry, there is a strong need for greenhouse gases reduction in order to assure the environmental protection and, consequently, many studies regarding the purification methods of exhausted gases have been performed. There are several types of reactors used for gases purification, such as: bubbling jet reactor, combined packed and spray tower absorber, cable wet scrubber and packed column... Autori: Elisabeta Droniuc Hultuana ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28160
OUTLIER ROBUST IDENTIFICATION OF THE THERMAL POWER PLANT: COMBUSTION CONTROL AND VIBRATORY TRANSPORT
Environmental Engineering and Management Journal › Vol. 19 › Nr. 3 The goal of this paper is to contribute to environmental improvement. This goal has been achieved by the development of an algorithm that allows the optimization of fuel consumption and transport of combustion products. The paper considers the outlier – robust recursive algorithm. This algorithm is used for identification of multivariable ARMAX (Autoregressive Moving Average with Exogenous Variables) models. In this paper, we introduce pseudo-Huber loss function which is a continuous nonli... Autori: Vojislav Filipovic ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28167
COMPUTATIONAL FLUID DYNAMICS DISCRETE PHASE MODELLING IN STORM SEWERS
Environmental Engineering and Management Journal › Vol. 19 › Nr. 4 A Computational Fluid Dynamics (ANSYS Fluent CFD) software was applied for the examination of a critical combined sewer
section of Budapest (Hungary) sewer network. The critical part of the main branch is located at a combined sewer overflow (CSO)
which is implying environmental risk for the receiving water body. The CFD simulations proved the anticipated disadvantageous
hydrodynamic effects of the lateral inflow. A discrete phase model (DPM) was also applied to analyse the sediment transport... Autori: Marcell Knolmar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28183
EFFICIENCY INDICATOR FOR ASSESSMENT OF WATER DISTRIBUTION NETWORKS CARRYING CAPACITY
Environmental Engineering and Management Journal › Vol. 19 › Nr. 5 A water distribution network’s (WDN’s) flow capacity decreases over time mainly because of the unplanned demand growth at its consumption points, increased water loss, and increased internal roughness caused by aging of pipes. In this context, this work presents a new performance indicator, the Carrying Capacity Indicator (ICC). It will enable utility managers to evaluate WDNs’
hydraulic and energy efficiency. The ICC was applied in a real case study: a sector of the Joã... Autori: Heber Pimentel Gomes ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28200
ANALYSIS OF COMBUSTION AND NOX FORMATION IN A SPARK IGNITION (SI) ENGINE FUELED WITH HYDROGENHYDROGEN OXYGEN (HHO) ENRICHED BIOGAS
Environmental Engineering and Management Journal › Vol. 19 › Nr. 5 A numerical simulation was conducted to investigate the combustion characteristics and effects of Hydrogen-Hydrogen Oxygen (HHO) addition on performance and NOx emission of a spark ignition (SI) biogas engine. At a given operating condition, indicative work cycle Wi increases with increase of HHO, CH4 concentrations and load rate; but it decreases with engine speed increase and reaches peak value as variation of equivalence ratio and advanced ignition timing. Combustion temperature T and NOx con... Autori: Bui Van Ga ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28204
THERMAL COMFORT AND VENTILATION CONDITIONS IN HEALTHCARE FACILITIES - PART 2: IMPROVING INDOOR ENVIRONMENT QUALITY (IEQ) THROUGH VENTILATION RETROFITTING
Environmental Engineering and Management Journal › Vol. 19 › Nr. 11 The basic purpose of a hospital is to provide a cure to the ailing patients. Since the patients are already suffering from ailments, the hospital must be a place for comfort and mental peace. Indoor Environmental Quality plays a vital role in maintaining that comfort.
The hospital building must be designed on the standards to provide the required thermal comfort. If the building is already built and operational, retrofitting techniques are used to maintain the standard values of indoor environm... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28325
OPTIMIZATION OF THE EVACUATION ROUTE IN CHEMICAL PLANTS BASED ON THE DEPTH-FIRST SEARCH ALGORITHM
Environmental Engineering and Management Journal › Vol. 19 › Nr. 12 Optimal evacuation routes are crucial to protect workers’ safety when accidental leakage of toxic gas occurs in chemical plants. However, the majority of route optimization focuses on the transport field and few on the evacuation routing optimization in chemical plants. This paper proposes a dynamic evacuation routing optimization method for chemical plants under toxic gas release scenarios. From the complete accident scenario set (CASS) built with wind fields and leakage sources, the leak... Autori: Ying Liu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28336
APPLICATION OF THE AGRO-HYDROLOGIC SWAT MODEL ON THE TAABO RIVER BASIN (CĂTE DâIVOIRE) TO EVALUATE THE EFFECT OF THREE VEGETATIVE FILTER STRIP SCENARIOS ON STREAMFLOW AND NUTRIENTS
Environmental Engineering and Management Journal › Vol. 20 › Nr. 1 Côte d'Ivoire is one of the world's leading producers and exporters of agricultural products. Unfortunately, the multiplicity of stakeholders in this sector and the absence of legislation and regulations have contributed to the pollution of the various hydro systems, particularly those of Taabo river basin. The purpose of this study was to assess the ability of the Soil and Water Assessment Tool (SWAT) model to test the applicability of three vegetative filter strips scenarios to m... Autori: Kouao Armand Anoh ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28346 |