title: Dechlorination of DDT, DDD and DDE in soil (slurry) phase using magnesium/palladium system.
abstract: Mg0/Pd4+ 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. Mg0/Pd4+ 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 Mg0/Pd4+ system for remediation of DDT, DDD and DDE contaminated soil. We conclude that reductive dechlorination reaction catalyzed by Mg0/Pd4+ may be a promising system to remediate soil contaminated with DDT and its dechlorinated products such as DDD and DDE.
authors.affiliation: Centre for Environmental Science and Engineering, Indian Institute of Technology, Bombay, Powai, Mumbai 400 076, India. gautamsk@iitb.ac.in
authors.forename: Sumit Kumar
authors.initials: SK
authors.lastname: Gautam
authors.forename: Sumathi
authors.initials: S
authors.lastname: Suresh
mesh_terms: D000327:Adsorption; D001559:Benzhydryl Compounds / Q000032:analysis / Q000138:chemical synthesis; D003634:DDT / Q000737:chemistry* / Q000302:isolation & purification; D003633:Dichlorodiphenyl Dichloroethylene / Q000737:chemistry* / Q000302:isolation & purification; D003632:Dichlorodiphenyldichloroethane / Q000737:chemistry* / Q000302:isolation & purification; D052918:Environmental Restoration and Remediation / Q000379:methods; D008274:Magnesium / Q000737:chemistry*; D010165:Palladium / Q000737:chemistry*; D012989:Soil Pollutants / Q000737:chemistry* / Q000302:isolation & purification; D013499:Surface Properties; D013997:Time Factors
chemical_list: D001559:Benzhydryl Compounds; D012989:Soil Pollutants; D003633:Dichlorodiphenyl Dichloroethylene; D010165:Palladium; C016406:1,1-diphenylethane; D003634:DDT; D008274:Magnesium; D003632:Dichlorodiphenyldichloroethane