Tag: water pollution

Recent Articles-IJES

Degradation of Alizarine Red-S (A Textiles Dye) by Photocatalysis using ZnO and TiO2 as Photocatalyst
Author(s)- Joshi K.M., Shrivastava V.S

ABSTRACT

The objective of this study was to investigate the ability of semiconductors like TiO2 and ZnO used to remove a hazardous Alizarin red-S a textile dye from aqueous solution. The adsorption of the Alizarin red-S was selected as a reference molecule for the adsorption studies. The experimental results show that TiO2 and ZnO can remove the Alizarin red-S from wastewater. The factor affecting rate process involved in the removal of dye for initial dye concentration, effect of various process parameters like initial dye concentration, contact time, dose of catalyst and pH. The adsorption rate data were analyzed using the pseudo first order of kinetics of Lagergren and Pseudo second order model to determine adsorption rate constant. The optimum contact time was fixed at 120 minutes for both TiO2 and ZnO. The well known Freundlich and Langmuir isotherm equation were applied for the equilibrium. Beside the above the semiconducting materials have also been irradiated with Alizarin red-S before and after studied for SEM, EDX and XRD.

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Recent Articles-IJES

Evaluation of effect of drains on water quality of river Gomti in Lucknow city using multivariate statistical techniques
Author(s)- Srivastava Shivani, Srivastava Anukool, Negi M.P.S, Tandon .P.K

ABSTRACT

World over, drains are the main source of water pollution especially for rivers flowing within the city. These drains generally carry industrial effluent, domestic waste, sewage, and medicinal waste results in pooring the water quality. The extent to which these drains pollute the water quality of river Gomti in Lucknow city is not well documented yet.  The present study thus evaluates the effect of 26 drains on water quality of river Gomti in Lucknow city, which submerged from cis side (14 drains) and Trans side (12 drains). For this, 13 necessary physico-chemical parameters from all drains were estimated as per standard methods and evaluated statistically.  The results revealed that most of the indicator parameters are above the permissible limits of BIS and WHO standards. The mean level of total solid, total dissolve solids, total suspended solids, conductivity, and sulphate at trans side was found to be significantly higher (p<0.05 or p<0.01) than the cis side. Among drains, the kukrial drain (mid of the city) is the highest polluted drain while Gaughat the least (upstream). The higher level of pollutants polluting the water quality of river Gomti, disturbing the ecology of river and affecting human health directly and indirectly.

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Recent Articles-IJES

Chromium (VI) tolerance of bacterial strains isolated from sewage oxidation ditch
Author(s)-  Ezaka. E, Anyanwu.C.U

ABSTRACT

The response, to different concentrations of chromium (vi), of bacterial isolates from a sewage oxidation ditch was investigated. Bacteria were isolated from sewage effluent in the oxidation ditch and chromium (vi) tolerance of the isolates determined by plating on media amended with different concentrations of the chromium. The isolates were identified as members of Staphylococcus spp., Bacillus spp., Pseudomonas spp., Micrococcus sp. and E. coli. The growth of the isolates in presence of chromium (vi) showed decrease with increasing concentrations of the metal. The inhibition was significant at chromium concentrations of 200μg/ml and above. However, the growth of the isolates in the presence of 150μg/ml chromium showed lag phases much longer than that in the absence of chromium. The isolates were resistant to high concentrations of chromium as they were able to grow at Cr (vi) concentration of up to 500 μg/ml (10 mM). As a result, the bacterial isolates obtained in this study were intrinsically resistant to high concentration of Cr (vi) and can be potential candidates in the cleanup of chromium-contaminated systems.

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Recent Articles-IJGGS

Groundwater pollution sensitivity model for part of Cauvery basin between Mettur dam and Erode town using Remote Sensing and GIS

Author(s)– Ravikumar.M et.al.,

ABSTRACT
Information about vulnerability of groundwater to contamination is essential to facilitate groundwater planning and management. The vulnerability of shallow groundwater to con­tamination in and around part of Cauvery basin between Mettur dam and Erode town, Tamil Nadu, India, is evaluated using the “LGRSIDWQ” method within a Geographic Information System (GIS). “LGRSIDWQ” parameters are calculated from geological, soil and elevation contour maps and groundwater level data of the study area and thematic maps are prepared. Finally, the maps are integrated through the “LGRSIDWQ” model within the GIS to demarcate vulnerable zones. In the present study, “LGRSIDWQ” indices for both generic industrial-municipal and pesticide pollutants are derived and vulnerability maps for both classes are prepared. The result of the study shows that 50 percent of the area is highly vulnerable to industrial and municipal pollutants and more than 81 percent of the area is highly vulnerable to industrial waste pollutants.

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Recent Articles-IJES

Groundwater quality studies in Nanjangud Taluk, Mysore District, Karnataka, India
Author(s)- Mahadevaswamy.G et.al,

ABSTRACT

An attempt has been made to classify the groundwater by various methods of Nanjangud taluk. The Nanjangud taluk having an area of 981.60 sq.km and it falls under Mysore district of Karnataka. Water quality parameters of the waters samples were analysed and the results of the analysis have been used to suggest models for predicting water quality. Quality of groundwater in a hard rock terrain is more controlled by the rock-water interaction and the residence time of water in aquifers. The residence time in turn depends on the groundwater systems within a larger hydrological unit. The hydrogeochemical facies of groundwater in the taluk of kabini river basin of Mysore district in Karnataka has been determined. Based on water samples collected and analysed from 50 locations, the hydrogeochemical facies in the area are found to be dominated by sodium-bicorbonate type.

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Recent Articles-IJES

Experimental Studies on analysis of rain water to predict air polluted zone / Unpolluted Zone
Author(s)-  Amrut G.Gaddamwar

ABSTRACT

Now a day’s pollution increases day by day due to industrialization, population explosion, deforestation, and vehicular exhaust & by using fossils fuels which contains nitrogen, Sulphur, carbon. Out of these three N2, S does not under goes complete combustion which evolved in to atmosphere so the concentration of oxides of nitrogen, oxide of sulphur increases in atmosphere which cause pollution. Due to pollution climate changes, Global warming and Depletion of ozone takes place. Due to global warming if the temperature of earth increases by one degree then water level in the sea will increase by fifty centimeters which causes adverse effects on human beings. The countries like Netherland, Bangladesh, Maldives, shanghai in china, Mumbai and Goa in India will submerge under the sea water. Due to global warming the rate of evaporation of water from the seas, rivers, ponds will increases and this leads to untimely rains cyclones and hurricanes. Agriculture sector will be badly affected. Due to fast evaporation of surface water   there will be a shortage of water for agriculture purposes. A slight increase in the global temperature adversely affects the world food production. Due to acid rain toxic effect to fresh aquatic life, damage to plants leaves, change in rate of photosynthesis in the plants and it also extensive damage to historical structural building, the PH of the soil changes which affect its fertility therefore it is necessary to control pollution and to control the pollution it is necessary to know whether observation zone is polluted or not. In the present work Author proved weather observed zone is polluted or not by simple analysis of rain water by using PH-meter and conductivity meter TDS-Meter by the measurement of PH, Conductivity, TDS of rain water   we can predict weather studied zone is polluted or not.

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Recent Articles-IJES

Effect of Heavy metals on Morphological and Biochemical characteristics of Albizia procera (Roxb.) Benth. Seedlings
Author(s) – Preeti Pandey, Tripathi.A.K

ABSTRACT

An investigation was conducted to study the differential action of heavy metals such as Cd, As and Pb on morphological and biochemical parameters of Albizia procera. These heavy metals at all concentration (1, 5 and 10 ppm) exhibited significant reduction in chlorophyll, crude protein, amino acid and soluble sugar quantity in leaves. These biochemical parameters showed a positive correlation with leaf area, root length, shoot length and biomass of the plant,.Polyphenol, proline and ascorbic acid of leaves significantly increased over control but revealed negative correlation with root-shoot length, leaf area and biomass of plant at all treatment levels. Concentration dependent changes were observed in most of the parameters. Hence, the morphological and biochemical traits may serve to determine suitable bio-indicators of heavy metal pollution and also for the classification of the species as tolerant or sensitive to heavy metals.

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