Environmental engineering and management journal (ENVIRON ENG MANAG J )

Description

Impact factor 1.26

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    Impact factor
  • 5-year impact
    0.97
  • Cited half-life
    2.60
  • Immediacy index
    0.18
  • Eigenfactor
    0.00
  • Article influence
    0.09
  • ISSN
    1582-9596

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: Evaluation of spatial/ temporal water quality data at reservoirs has shown differences after the dam construction as well as long-term changes of water chemistry. One of the most recent reservoirs created in Europe is Ilarion Reservoir in Western Macedonia – Greece (2012). In this work, the water physicochemical characteristics of this young reservoir and the spatiotemporal water quality variation of the feeding river and its main tributaries have been studied, and statistically interpreted. The aqueous system of the young reservoir after two years of formation does not seem to have reached its stabilization age but a stabilization tendency appears at some quality parameters. The dissolution of plant residues covering the flooded areas and the water volume changes affected the water quality, while excesses of legislation’s limits for some parameters have been observed. The most affected parameters, remaining at high levels are TKN, ammonia, nitrite nitrogen and color. The feed water quality is generally within the legislation’s limits with the exception of nitrite and ammonium nitrogen parameters which exceed the maximum permissible legislation’s limits and are the main pollution sources of the young reservoir. Monitoring these parameters is necessary to determine if the observed excess values could lead to eutrophic conditions and toxic habitat for fishes. The statistical analysis indicated some significant parameters responsible for large variations in water quality and allowed the identification and apportionment of pollution sources as an aspect of the temporal/spatial variations in water quality, indispensable for effective water quality management.
    Environmental engineering and management journal 03/2015;
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    ABSTRACT: http://omicron.ch.tuiasi.ro/EEMJ/pdfs/accepted/21_325_Saady_11.pdf Effects of inserting inclined plates (45o to 75o above horizon) in the upper zone of an upflow settling tank handling river water on the turbidity removal efficiency (TRE) were assessed in flocculent and plain settling. At θ = 60o, the inclined plates improved the TRE (15%) and increased the hydraulic capacity (330%) for flocculent settling; similar trend of improvements was observed for plain settling. The modified settling tank was better than conventional settling tanks of good and best possible performance. The upper limit of the upflow velocity in the settling tank could be increased seven times with improved TRE. Mathematical-empirical models were developed, using data from 80 experiments in a laboratory-scale setup, to predict TRE using the surface overflow rate (SOR), flow rate velocity (Vo) between plates, and detention time (td). The models can be used to design conventional upflow settling tanks modified with inclined plates in the upper zone.
    Environmental engineering and management journal 01/2015;
  • Environmental engineering and management journal 01/2015;
  • Environmental engineering and management journal 01/2015;
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    ABSTRACT: This study was conducted to screen plants growing on potentially contaminated areas of landfill body and nearest surrounding to determine their potential for metal accumulation. In addition, enrichment coefficient (EC) for plant/soil system, correlation and principal component analysis were used for determining the environmental contamination from landfill in terms of heavy metal accumulation. The examined plant samples meet the stated requirements. The highest values in samples 1 - 8 reached Fe (491 – 191 000 mg/kg DM), the second values were Mn (35.1 – 342 mg/kg DM) and the third was Zn (26.9 – 145 mg/kg DM). The highest concentrations of Co, Cd, Cr, Cu, Fe , Mn, Ni , Pb and Zn were observed (in order) in plant samples 4, 2 and 1, i.e. plants collected in the vicinity of the landfill. The examined soil samples meet the stated requirements. The highest values in samples 1 - 8 reached Fe (23 300 to 63 400 mg/kg DM), the second were recorded for Mn (527-908 mg/kg DM) and the third was Zn (83.0 - 519 mg/kg DM). The highest concentrations of Co, Cd, Cr , Cu, Fe , Mn, Ni , Pb and Zn were observed (in order) in soil samples 7, 2 and 5. EC was calculated for all 8 sampling points. The highest degree of accumulation was observed for Cd in all 8 sampling points. In contrast, the lowest concentration of all the examined heavy metals was determined for Cd in plant and soil samples.
    Environmental engineering and management journal 01/2015;
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    ABSTRACT: Safe operation of highly thermally sensitive industrial catalytic reactors remains a major engineering issue when highly exothermic reactions are conducted under randomly fluctuating operating variables, and especially when the set-point is located in a close vicinity of the runaway boundaries for increasing the reactor productivity (Varma et al, 1999, Maria, 2007, Maria and Stefan, 2010, Maria and Dan, 2012). This study is aiming to derive the runaway boundaries and their associated region of confidence in the operating variable space for such a risky fixed-bed catalytic reactor by applying a very effective Morbidelli & Varma generalized criterion (Varma et al, 1999). In a subsequent step of the risk assessment, such a critical variety is approximated by adequate simple multi-variate correlations of the control variable safety limits, usually of mixed logarithmic-polynomial form, from bringing together all critical curves separately derived in parametric planes. Such simple correlations allow quickly evaluating the associated variance of the critical limits to be further used in the reactor multi-objective robust optimization step (Dan and Maria, 2012). Exemplification is made for an industrial fixed-bed multi-tubular reactor for catalytic benzene oxidation to maleic anhydride in vapour-phase.
    Environmental engineering and management journal 01/2015; in press.
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    ABSTRACT: The present work reports the gaseous emissions of the following industries, Interloop Textile (IP Tex), Crescent Textile (CT Tex), Kalash Textile (KH Tex), Noor Fatima Textile (NF Tex), Bashir Textile (BP Tex) and Hina Sana Texile (HS Tex) which are located in Faisalabad, Pakistan. Industries were tested for the mixture of gases containing carbon monoxide (CO), nitrogen oxides (NOx), sulphur oxides (SOx), carbon dioxide (CO2) and hydrogen (H2) emitting from these industries. The maximum amounts of CO, NOx and SO2 were found as 4903 mg/Nm3, 437 mg/Nm3 and 3383 mg/Nm3 in boilers and 1927 mg/Nm3, 2297 mg/Nm3 and 0 mg/Nm3 in generators. Similarly concentrations of CO2 and H2 were found in the range of 58732-221964 mg/Nm3 and 0-174 mg/Nm3 in boilers and 21714-131429 mg/Nm3 and 0-174 mg/Nm3 in generators. The other factors of pollution in industries are temperature and noise whose values were found to be 521 oC and 97 dB respectively. Smoke opacity of oil generators was found to be exceeding NEQS at 40%. Overall, the combustion efficiency of gas boilers is better than oil boilers and which is found better than generators up to 30%. On the basis of results found it can be concluded that natural gas is better fuel as compared to diesel oil and furnace oil and low state of combustion is unfavorable for use due to low oxidation of fuel.
    Environmental engineering and management journal 01/2015; xx(xx):xx.
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    ABSTRACT: The landfill reclamation project took place in the period from 2008 to 2009. Forestry reclamation was carried out in 2009. The aim of this project was to establish the growth of particular plant species, quantify plant species survival and changes in species properties over time. A phased approach was utilized to evaluate the technical and economic feasibility of the reclamation project; based on the results of these evaluations, in 2011 approximately 90 % of plant species survived during the first phase of landfill reclamation. The composition of wood species selected for the plantation can be evaluated as appropriate. The success is determined by the selection of wood species and the care that was taken of the seedlings after the plantation (frequent watering in the first months after plantation and also regular pruning, as a part of the mowing process; less prosperous seedling trees were hoed). This paper presents the researchers’ landfill reclamation project experience, including an estimation of reclamation rates achieved during the project, project costs and estimated composition of the reclaimed materials. It is expected that a similar composition of wood species will be used for reclamation of the second phase of the landfill body. Only with regard to species Juniperus communis it is advisable to replace it with another species, due to lower rooting success (42 % in 2010 and 37.3 % in 2011).
    Environmental engineering and management journal 01/2015;
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    ABSTRACT: aluminium sulphate r=coagulant recovering from metallurgical sludge
    Environmental engineering and management journal 01/2015; in presss.
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    ABSTRACT: There are several environmental issues in urban areas that are caused by the unintentional consequences of past activities. One of these issues is the wide application of asbestos cement in roofing materials in the 2nd half of the 1900s. In this study, our goal was to identify different roof types and to determine those with asbestos components using high-ground (1 m) and spectral (126 bands) resolution airborne hyperspectral imagery (AISA Eagle II) and several classification approaches. In addition, we aimed to identify those wavelengths that play a significant role in distinguishing the different roof types. In the image analysis, the SAM,MLC and SVM classification methods were used to evaluate the different types of roofs. These methods resulted in accurate maps of the roof types, and asbestos cement roofs were identified with over 85% accuracy.
    Environmental engineering and management journal 12/2014; 13(11).
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    ABSTRACT: The thermal and water insulation of buildings is extremely important. Currently, the most applied insulation materials in the building sector are plastic foams and fibrous materials. Different types of polystyrene materials are used as water and thermal insulators, e.g., expanded polystyrene (EPS) and extruded polystyrene (XPS). The differences between the different polystyrene materials is found in their manufacturing processes and thus in their microstructure. Our research focuses on the analysis of heat conductivity and sorption properties of insulating materials because these two physical properties are the most important from the energy saving point of view. In this paper, the change of the time lag of concrete and brick walls insulated by different slabs as a function of the moisture content of the insulation materials was studied. Brick and concrete walls, each of thickness of 0.3 m, were chosen as substrates, and a 0.1-m thick insulating layer of different materials of EPS 30 and 200, extruded polystyrene and mineral wool were applied. The water content data taken from our previous measurements results were used for predicting the change of the time lag of building structures.
    Environmental engineering and management journal 11/2014; 13(11):2853-2858.
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    ABSTRACT: Currently, thermal insulation of buildings is required from both an energy savings perspective and a money savings perspective. Insulation is primarily installed on the outer surface of the buildings. Weather and other circumstances can produce humidity that can act on the building structure, e.g., by changing its heat capacity, the heat transfer coefficient and/or other factors. As a result, it is important to measure the sorption behaviors of the construction materials. To perform sorption measurements, we use a desiccator (Venticell 111 type) to dry the samples and a climatic chamber (Climacell 111 type) to wet the materials. With these two chambers, we can achieve the relevant moisture content of different humidity levels and create a sorption isotherm graph for the sample. During the measurements, four different types of insulations were used (a mineral wool, EPS30, graphite-doped EPS, and yellow colored Extruded Polystyrene).
    Environmental engineering and management journal 11/2014; 14(11):2014.
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    ABSTRACT: Greywater (GW) has attracted global attention as an alternative water source over the last few decades. GW treatment and reliable reuse require the overall qualitative characterization of samples from different sources. This paper represents an investigation of household-generated GW in the Northern Great Plain Region of Hungary. Modern and reliable analytical techniques and instruments (ion chromatography, microwave plasma atomic emission spectrometry, Zetasizer Nano Z analysis,etc.) were applied for the determination of the main pollutants and the preparation and specification of the potential treatment methods for indoor or outdoor GW reuse. It was shown that the shower/bathtub fraction must be collected separately from other sources based on its low organic matter (DOC<87.76 mg L-1 and BOD5<250.33 mg L-1, MBAS<2.92 mg L-1), solids (TS<804 mg L-1), salt (EC<610 uS cm-1), nutrients (NO3-N<1.15 mg L-1, NH4-N<4.80 mg L-1) and microelement (Fe<0.01 mg L-1, Zn<0.01 mg L-1, Cu<0.15 mg L-1, Ba<0.38 mg L-1) concentrations. In particular, laundry and kitchen sink or dishwasher GW were the most loaded streams. The current study demonstrated that there are no significant limitations for implementing GW reuse systems in Hungarian households but that treatment is necessary before reuse. Further research is needed to adapt treatment methods for the specifics of Hungary.
    Environmental engineering and management journal 11/2014; 13(11).