Abstract
Mg 0/Pd 4+ was able to dechlorinate > 99 % of extractable DDT (initial concentration of 10 mg DDT kg −1 of soil) and > 90 % of extractable DDT (initial concentration of 50 mg DDT kg −1 of soil) in soil slurry. Mg 0/Pd 4+ was also found to be effective in dechlorinating of 50 mg kg −1 DDD and DDE, in soil aged for varying time periods. GC-MS analyses revealed the formation of 1,1-diphenylethane as an end product from DDT, DDE and DDD. To the best of our knowledge this is the first report describing the application Mg 0/Pd 4+ system for remediation of DDT, DDD and DDE contaminated soil. We conclude that reductive dechlorination reaction catalyzed by Mg 0/Pd 4+ may be a promising system to remediate soil contaminated with DDT and its dechlorinated products such as DDD and DDE.
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