African Journal of Soil Science ISSN 2375-088X Vol. 8 (7), pp. 001-010, July, 2020. © International Scholars Journals
Full Length Research Paper
Bioremediation of pesticides in surface soil treatment unit using microbial consortia
M. Geetha and M. H. Fulekar*
Environmental Biotechnology Laboratory, Department of Life Sciences, University of Mumbai, Mumbai, India.
Accepted 08 February, 2020
The manufacturing and use of pesticides has been rising tremendously in India. The waste generated by the pesticide industry has become an environmental problem due to the present insufficient and ineffective waste treatment technology involving physico-chemical and biological treatment. The available data indicates that pesticide residues remain in surface soil, leading to toxicity in the soil-water environment. The recent advances in bioremediation technology using microbial consortium has been found effective for treatment of pesticides in soil. In the present study, a Surface Soil Treatment Unit has been designed wherein bioremediation of commonly used pesticides namely chlorpyrifos, cypermethrin, fenvalerate, and trichlopyr butoxyethyl ester at varying concentration viz. 25, 50 and 100 mg/kg have been carried out using cow -dung microbial consortia under simulated environmental conditions. The bioremediation conditions have been monitored and maintained during the study. The investigation has been extended till the parent compound was converted into intermediates and/or less harmful compounds. These then will further mineralize, from part of the microbial food chain and/or become integrated into the humic fractions. The results presented here highlight the potential of cow-dung slurry consortia for bioremediation of soil contaminated with pesticides in surface soil treatment unit.
Key words: Bioremediation, surface soil treatment unit, pesticides, cow-dung, microbial consortia.