This work looks at several new abiotic treatment methods for transformation of DDT in an aqueous solution. Various combinations of calcium peroxide (Ca O2 ) , zero-valent iron ( Fe0 ) , iron sulfide (FeS), and hydrogen peroxide ( H2 O2 ) were utilized to promote the abiotic transformation of 1,1,1-trichloro-2,2-bis( p -chlorophenyl)ethane (DDT) in electrolyte, hydroquinone, and nonionic surfactant (Triton X-114) systems. Treatment with Ca O2 resulted in 86% DDT mass reduction within 10 days of treatment with only traces of 1,1-dichloro-2,2-bis( p -chlorophenyl)ethane (DDD) , 1,1-dichloro-2,2-bis( p -chlorophenyl)ethylene (DDE), and 1,1-dichloro-2,2-bis(4-chlorophenyl)ethylene (DDMU) being generated. Treatments with 1:1 mixtures of Fe0 :Ca O2 and FeS:Ca O2 resulted in 86 and 85% DDT mass transformation, respectively, within 8 days . A mixture of 0.75 g Fe0 :0.1 g Ca O2 showed similar results with 79% DDT mass transformed within 8 days . A mixture of 0.75–0.1 g of Fe0 :FeS resulted in 85 and 97% transformat...