Overview of the bioremediation and the degradation pathways of DDT

Abstract

DDT is a persistent pesticide that was banned in most countries due to its significant environmental and human health hazards. Bioremediation has the potential for in-situ treatment of DDT contaminated sediment and soils. With the right microorganisms and conditions, DDTand its primary metabolites, DDD and DDE can be degraded into 4-chlorobenzoic acid or 4,4- dichlorobenzophenone under aerobic and anaerobic conditions, respectively. The extent of degradation and time required will depend on the initial concentration, respiration mode and microorganisms present. This review provides brief overview of bioremediation and discusses some of the key degradation pathways of DDT.