Efficient DDT and trichlorophenol detoxification using NaBH4 and Devarda alloy

DDT-1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane-is a pesticide that has been widely used to control insects in agriculture. TCP-2,4,6-trichlorophenol-has been used in pesticide formulations as a preservative, disinfectant and antiseptic. Detoxification of DDT and TCP is very difficult due to their stable chemical structure. Here, a mixture of NaBH4 and Devarda alloy was applied for the first time to detoxify DDT and TCP. Results show 94 % dechlorination of DDT at 100 A degrees C and 97 % dechlorination of TCP at 80 A degrees C. The presence of diphenyl ethane suggests the complete dechlorination of DDT. The formation of benzene suggests a strong reduction. The method is efficient, cost-effective and may be applied at the industrial-level.