Dechlorination of DDT, DDD and DDE in soil (slurry) phase using magnesium/palladium system.
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.
Gautam
Sumit Kumar
SK
Centre for Environmental Science and Engineering, Indian Institute of Technology, Bombay, Powai, Mumbai 400 076, India. gautamsk@iitb.ac.in
Suresh
Sumathi
S
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
D001559:Benzhydryl Compounds; D012989:Soil Pollutants; D003633:Dichlorodiphenyl Dichloroethylene; D010165:Palladium; C016406:1,1-diphenylethane; D003634:DDT; D008274:Magnesium; D003632:Dichlorodiphenyldichloroethane