Interactively interfacial reaction of iron-reducing bacterium and goethite for reductive dechlorination of chlorinated organic compounds

文献类型: 外文期刊

第一作者: Li XiaoMin

作者: Li XiaoMin;Li FangBai;Zhou ShunGui;Liu TongXu;Li XiaoMin;Li YongTao;Feng ChunHua;Li XiaoMin

作者机构:

关键词: interactive reaction;reductive dechlorination;Shewanella decolorationis S12;goethite;chloroform;pentachlorophenol

期刊名称:CHINESE SCIENCE BULLETIN ( 影响因子:1.649; 五年影响因子:1.738 )

ISSN: 1001-6538

年卷期: 2009 年 54 卷 16 期

页码:

收录情况: SCI

摘要: The interactively interfacial reactions between the iron-reducing bacterium (Shewanella decolorationis, S12) and iron oxide (alpha-FeOOH) were investigated to determine reductive dechlorination transformation of chlorinated organic compounds (chloroform and pentachlorophenol). The results showed that the interactive system of S12+ alpha-FeOOH exhibited relatively high dechlorination rate. By comparison, the S12 biotic system alone had no obvious dechlorination, and the alpha-FeOOH abiotic system showed low dechlorination rate. The enhanced dechlorination of chloroform and pentachlorophenol in the interactive system of S12+alpha-FeOOH was derived from the promoted generation of adsorbed Fe(II) by S12. A decrease in redox potential of the Fe(III)/Fe(II) couple in the interactive reaction system was determined by cyclic voltammetry. Our results will give new insight into interactively interfacial reaction between iron-reducing bacterium and iron oxides for degradation of chlorinated organic compounds under anaerobic condition.

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