| Literature DB >> 20031285 |
F B Li1, X M Li, S G Zhou, L Zhuang, F Cao, D Y Huang, W Xu, T X Liu, C H Feng.
Abstract
The transformation of DDT was studied in an anaerobic system of dissimilatory iron-reducing bacteria (Shewanella decolorationis S12) and iron oxide (alpha-FeOOH). The results showed that S. decolorationis could reduce DDT into DDD, and DDT transformation rate was accelerated by the presence of alpha-FeOOH. DDD was observed as the primary transformation product, which was demonstrated to be transformed in the abiotic system of Fe(2+)+alpha-FeOOH and the system of DIRB+alpha-FeOOH. The intermediates of DDMS and DBP were detected after 9 months, likely suggesting that reductive dechlorination was the main dechlorination pathway of DDT in the iron-reducing system. The enhanced reductive dechlorination of DDT was mainly due to biogenic Fe(II) sorbed on the surface of alpha-FeOOH, which can serve as a mediator for the transformation of DDT. This study demonstrated the important role of DIRB and iron oxide on DDT and DDD transformation under anaerobic iron-reducing environments. Copyright 2009 Elsevier Ltd. All rights reserved.Entities:
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Year: 2009 PMID： 20031285 DOI： 10.1016/j.envpol.2009.11.020
Source DB: PubMed Journal: Environ Pollut ISSN： 0269-7491 Impact factor: 8.071