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

文献类型： 外文期刊

作者： Li XiaoMin 1 ; Li YongTao 3 ; Li FangBai 1 ; Zhou ShunGui 1 ; Feng ChunHua 4 ; Liu TongXu 1 ;

作者机构： 1.Guangdong Inst Ecoenvironm & Soil Sci, Guangdong Key Lab Agr Environm Pollut Integrated, Guangzhou 510650, Guangdong, Peoples R China

2.Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China

3.S China Agr Univ, Coll Nat Resources & Environm, Guangzhou 510642, Guangdong, Peoples R China

4.S China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510641, Peoples R China

5.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China

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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