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Journal of Environmental Science & Engineering

T K Mandal, A K Gorai
Air quality indices are commonly used to indicate the level of severity of air pollution to the public. It is infeasible and perhaps impossible to formulate a universal technique for determining air quality index, one that considers all pollutants and that is appropriate for all situations. The intended use of the air quality index is to identify the vulnerable zone. There are mainly two approaches viz. single pollutant index and multi-pollutant index to determine the air quality index. Every index has its own characteristic strengths and weaknesses that affect its suitability for particular applications...
July 2014: Journal of Environmental Science & Engineering
Krishan Amit, Kumar Ajit, M Arthanareeswari, P Kamaraj
The aim of this study was to assess the decomposition efficiency of earthworms, local (L.mauritii) as well as exotic (Eisenia foetida) in vermicomposting of garden litter in SRM University campus. The vermicompost produced through vermicomposting of garden litter mixed with cow dung in the ratio of 3:1 by using local and exotic earthworms (Eisenia foetida) was rich in ammoniacal nitrogen, nitrate nitrogen, available phosphorus, total potassium and TKN, and there was a reduction in total organic carbon and carbon to nitrogen ratio...
July 2014: Journal of Environmental Science & Engineering
G Manjula, T Meenambal
In this study, a series of experimental studies were conducted with regard to bioconversion of organic fraction of municipal solid waste along with paper mill sludge at different C/N ratios. About 10 kg of shredded waste containing paper mill sludge, saw dust and municipal solid waste was placed in reactors in different proportions and 100 mL of effective microorganisms was added to it. The variation in physical and chemical parameters was monitored throughout the process. The results indicate that co-composting of paper mill sludge with municipal solid waste produces compost that is more stable and homogenous and can be effectively used as soil conditioner...
July 2014: Journal of Environmental Science & Engineering
Nand Lal, Sweta Chand
Newly isolated, Bacillus sp. MTCC-3330 was screened for the decolorization of a sulphonated azodye metanil yellow under aerobic conditions. 100% decolorization was observed of Metanil Yellow at 0.01mM, 0.02mM 0.05mM concentrations within 30h, 35h and 45h respectively. Decolorization was confirmed by UV-VIS spectrophotometer. The initial dye solution showed highest peak at the wavelength of 437 nm (λmax of the Metanil Yellow). The decolorized dye showed disappearance of peak, which indicated that the decolorization is due to dye degradation...
July 2014: Journal of Environmental Science & Engineering
Sabika Akbar, R Gyana Prasuna, B Theja, Y M S Chakradhar
Management of household solid waste and agro industrial residues generated from various sources is a serious problem due to huge ever increasing population and pollution. Application of these worthless agro waste materials to generate a commercially valuable product, pectinase enzyme, using locally isolated fungal strain, Aspergillus flavipes, was the main motive of this study. Physiological characterisation and enzyme profile determination were done along with formulation of production media. Fruit skins, rags were used as C source and oil cakes were used for N source...
July 2014: Journal of Environmental Science & Engineering
Basumatary Budhadev, Saikia Rubul, Bordoloi Sabitry, Sarma Hari Prasad
The aim of this study was to evaluate the efficiency of Mimosa pudica L. that could be effective in phytoremediation of PHC-contaminated soil. Experiments were conducted in net house to determine the tolerance of this species to a heavy crude oil contaminated soil under the application of two fertilizer levels and reduction of PHC was monitored for 180 days. Assessment of plant growth, biomass and Total Oil and Grease (TOG) degradation were carried out at an interval of 60 days. In the presence of contaminants, biomass and plant height were reduced up to 27% and 10...
July 2014: Journal of Environmental Science & Engineering
A Valipour, Sh Azizi, V K Raman, S Jamshidi, N Hamnabard
The constructed wetlands as well engineered techniques have been used effectively for phytoremediation of wastewater and pollution control during the last decades. In these technologies, the naturally occurring processes of plants alongside micro-organisms present in the bio-film attached to the roots, soil substrate and water column degrade the organic pollutants. The study seeks to compare the potential use of Phragmites sp. reed bed and floating macrophyte water hyacinth (Eichhornia crassipes) system for domestic wastewater treatment...
July 2014: Journal of Environmental Science & Engineering
Anu Chandra, Deepti Srivastava, Ashok Kumar
Volatile organic compounds (VOCs) are major group of air pollutants which play critical role in atmospheric chemistry. These contribute to toxic oxidants which are harmful to ecosystem, human health and atmosphere. A sampling program was conducted to determine the ambient VOC levels in the city of Agra (Uttar Pradesh), India during day time and overnight in 2010. Sampling sites were selected at three industrial area of Agra. Samples were analyzed for styrene. Concentration of Styrene was determined at different sampling points in the air of Agra in order to investigate their spatial distributions...
July 2014: Journal of Environmental Science & Engineering
Masooma Quazi, N C Aery
The effects of various concentrations of chromium on the activity of dehydrogenase, catalase and soil respiration were studied after 14, 28, 56 and 112 days of incubation period. Chromium was applied as K2Cr2O7 in the amounts of 0, 25, 50, 100, 200, 400, 800 ìg g(-1) of soil. Soil contamination with Cr decreased the activity of dehydrogenase, catalase and soil respiration. About 36.92% and 44.88% inhibition in the activity of dehydrogenase was caused by 50 and 100 ìg g(-1) Cr addition respectively, after 14 days of incubation...
July 2014: Journal of Environmental Science & Engineering
E Kumar, T Madhava Rao, Prabhuprasadini, N Krishnaiah, Kumar A Vijaya
The present study was undertaken to determine the pollution load to the environment causing by the wastewater effluents releasing from organized and unorganized slaughterhouses in and around Hyderabad city. The wastewater effluents collected from three slaughterhouses, at the sites of releasing out to the surrounding environment,were characterized in terms of physico-chemical and microbiological parameters. The physico-chemical parameters, such as temperature, pH, alkalinity, turbidity, total suspended solids, electrical conductivity, total dissolved solids, dissolved oxygen, biological oxygen demand, chemical oxygen demand, total organic carbon, calcium, NH4-N, nitrates and phosphates were estimated in the wastewater effluents collected from three different slaughterhouses...
July 2014: Journal of Environmental Science & Engineering
R Kavidha, K Elangovan
In recent years, the recurring environmental issues regarding hazardous waste, global climate change, stratospheric ozone depletion, groundwater contamination, disaster mitigation and removal of pollutant have become the focus of environmental attention. In the management of water resources, quality of water is just as important as its quantity. In order to assess the quality and/or suitability of groundwater for drinking and irrigation in Erode District, 144 water samples each in post-monsoon and pre-monsoon during the year 2007 were collected and analyzed for various parameters...
July 2014: Journal of Environmental Science & Engineering
K Murali, R D Swasthik Kumar, R Elangovan
The study was conducted to evaluate the suitability of ground water for irrigation purpose at twenty seven locations in Coimbatore South Taluk, Coimbatore District. The analytical result shows that Na and Cl are the dominant cation and anions respectively in the groundwater. The values of TDS and EC exceed the permissible limits at some locations due to increase in ionic concentrations. Based on SAR, RSC, US Salinity diagram and Wilcox diagram it is observed that the water ranges from excellent to good quality in most of the places and can be used for irrigation without any hazard...
July 2014: Journal of Environmental Science & Engineering
M Sujatha, T Satyanarayana
An attempt has been made to study the hydrochemistry of groundwater in Sarada River Basin (SRB).The groundwater samples were collected from dug wells and bore wells which have been analysed for cations and anions in the study area. The river basin is divided into six sub-basins for the purpose of study. The six hydrochemical groups namely sodium bicarbonate, magnesium bicarbonate, sodium chloride, calcium bicarbonate, sodium sulphate, and magnesium chloride, according to their dominant cations and anions were observed and studied in different types of rock formations, soil groups, geomorphic settings, slopes and groundwater aquifers in the area of the investigation...
July 2014: Journal of Environmental Science & Engineering
S Hema, T Subramani, L Elango
The study explains water quality of the Cauvery River in the southern region of Peninsular India. Thirteen parameters including trace elements (Cd, As, Cu, Cr, Zn and Pb) have been monitored on 50 sampling points from a hydro-geochemical survey, conducted in the river stretch under study. Several water quality parameters showed considerable changes due to increased runoff from the catchments and other seasonal factors. Multivariate discriminant analysis delineated a few parameters responsible for temporal variation in water quality...
July 2014: Journal of Environmental Science & Engineering
B I Odoh, A U Utom, H N Ezeh, B C E Egboka, V O Ezeh
This study is aimed at providing useful information about the hydrochemistry of some parts of Abakaliki city for proper understanding of the groundwater quality. Twelve representative groundwater samples from water boreholes/wells in the study area were analyzed for their hydrogeochemical properties: pH, Electrical Conductivity (EC), Turbidity, Total Dissolved Solids (TDS), Total Hardness (TH), COD, Ca2+, Mg2+, Na+, K+, HCO3-, SO4(2-), Cl-, NO3-, and CO3(2-). Aquifers in the study environment were located in the fractured shales of Abakaliki Formation...
July 2014: Journal of Environmental Science & Engineering
Pradnya Pillewan, Shrabanti Mukherjee, Amit Bansiwal, Sadhana Rayalu
Adsorption of arsenic on bimetallic Mn and Fe mixed oxide was carried out using both field as well as simulated water. The material was synthesized using hydrothermal method and characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM). Langmuir and Freundlich adsorption isotherms were computed using batch adsorption studies to determine the adsorption capacity of Mn-Fe binary mixed oxide for arsenic. Adsorption capacity for MFBMO obtained from Freundlich model was found to be 2.048 mg/g for simulated water and 1...
July 2014: Journal of Environmental Science & Engineering
N Vijayakumari, K Srinivasan
The adsorption of Ni (II) on modified coconut oilcake residue carbon (bicarbonate treated coconut oilcake residue carbon-BCORC) was employed for the removal of Ni (II) from water and wastewater. The influence of various factors such as agitation time, pH and carbon dosage on the adsorption capacity has been studied. Adsorption isothermal data could be interpreted by Langmuir and Freundlich equations. In order to understand the reaction mechanism, kinetic data has been studied using reversible first order rate equation...
July 2014: Journal of Environmental Science & Engineering
G Ashiagbori, E K Forkuo, P Laari, R Aabeyir
Soil erosion involves detachment and transport of soil particles from top soil layers, degrading soil quality and reducing the productivity of affected lands. Soil eroded from the upland catchment causes depletion of fertile agricultural land and the resulting sediment deposited at the river networks creates river morphological change and reservoir sedimentation problems. However, land managers and policy makers are more interested in the spatial distribution of soil erosion risk than in absolute values of soil erosion loss...
July 2014: Journal of Environmental Science & Engineering
M Honarmand, S M Mousavi
Modeling and simulation of noise pollution has been done in a large city, where the population is over 2 millions. Two models of artificial neural network and regression were developed to predict in-city road traffic noise pollution with using the data of noise measurements and vehicle counts at three points of the city for a period of 12 hours. The MATLAB and DATAFIT softwares were used for simulation. The predicted results of noise level were compared with the measured noise levels in three stations. The values of normalized bias, sum of squared errors, mean of squared errors, root mean of squared errors, and squared correlation coefficient calculated for each model show the results of two models are suitable, and the predictions of artificial neural network are closer to the experimental data...
April 2014: Journal of Environmental Science & Engineering
Anjali Gupta, Arvind K Nema
Carbon sequestration is considered a leading technology for reducing carbon dioxide (CO2) emissions from fossil-fuel based electricity generating power plants and could permit the continued use of coal and gas whilst meeting greenhouse gas targets. India will become the world's third largest emitter of CO2 by 2015. Considering the dependence of health of the Indian global economy, there is an imperative need to develop a global approach which could address the capturing and securely storing carbon dioxide emitted from an array of energy...
April 2014: Journal of Environmental Science & Engineering
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