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Name : K. VINUTHA

Paper title : TREATMENT OF WATER SYSTEMS CONTAMINATED WITH PESTICIDE (MONOCROTOPHOS) AND USING FOR RECHARGHING GROUND WATER.

Affiliation : ENVIRONMENTAL ENGINEERING

Country : India

Paper Abstract : Owing to large-scale use of monochrotophos, an OP compound, contaminations of water systems have been reported from all parts of the world. Despite strict environment laws, The Water (Prevention and Control of Pollution) Act , there is nothing done to tackle this problem, and therefore decontamination and detoxification of the pesticide polluted water is essential. Floodwaters contribute to high levels of pesticides residues in streams, lakes and rivers and ground water. Chemical and physical methods of decontamination are costly and time-consuming. Bioremediation provides a suitable way to remove contaminants from water. The water which is contaminated with pesticides will have to be pumped out to a storage tank for land application for degradation and later can be used recharge the ground water. The role of soil micro organisms in attenuation of monocrotophos in two major varieties of soils was determined by comparing the relative rates of their degradation in sterilised and non sterilised soil samples. To evaluate the degradation of a widely used organophosphorus insecticide, monocrotophos (dimethyl (E)-1-methyl-2-methylcarbamoyl vinyl phosphate) by soil microorganisms, in two major variety of Indian agricultural soils (red sandy loam and black loam soil) at concentration level of 2225ppm under aerobic conditions at 60% water-holding capacity at 28 ± 4 °C was studied in a laboratory. The degradation of monocrotophos at this concentrations in non sterilized black and red soils was rapid accounting for 100% degradation of the applied quantity within 16 and 20 days. In contrast 31% and 22% of initial amount of MCP remained in sterile-soil, even after 30 days of incubation.

Conference Details : ISETE International Conference,Bangalore,4th February,2017

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