Biodegradation of chlorpyrifos by bacterial genus pseudomonas putida

Chlorpyrifos is an solid organophosphorus pesticide widely used in agriculture. It relatively stable to hydrolysis neutral pH and acidic aqueous solutions. Stability decreases with increasing pH. practically insoluble water, but highly soluble most organic solvents such as acetone xylene methyl bromide. effective skin, stomach respiratory insecticide against aphids, spider mites, soil bugs house pests. also toxic bees fish. Most pesticides are complex molecules persistent the environment, either biota or accumulate environment. In pesticide-used areas, itself its residues transported by rain irrigation water mixes into groundwater. The effects caused closely related level of accumulation. During studies, contamination chlorpyrifos has been found about 24 km from site application. There many physico-chemical biological approaches remove ecosystem, among them promising biodegradation. this study, biodegradation potential P. Putida was investigated batch stirred reactor. optimum conditions, maximum removal rate determined 1.51 mg/g. d. m.o.h.