ROLE OF SULFATE IN MICROBIAL TRANSFORMATIONS OF ENVIRONMENTAL CONTAMINANTS - CHLORINATED AROMATIC-COMPOUNDS

被引:23
作者
COLBERG, PJS [1 ]
机构
[1] UNIV WYOMING,DEPT MOLEC BIOL,LARAMIE,WY 82071
关键词
ANAEROBIC DEGRADATION; BIOREMEDIATION; CHLORINATED AROMATIC COMPOUNDS; ENVIRONMENTAL CONTAMINANTS; MICROBIAL TRANSFORMATIONS; REDUCTIVE DECHLORINATION; SULFATE REDUCTION; SULFIDOGENESIS; THERMODYNAMICS;
D O I
10.1080/01490459009377892
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Despite recent progress made in describing microbial transformations that occur under anaerobic conditions, our understanding of the role sulfate-reducing bacteria may play in the remediation of environmental contaminants is still very limited. The objective of this mini-review is to summarize what is currently known of the metabolism of chlorinated aromatic compounds in the presence of sulfate. Sulfidogenic processes are discussed with respect to the thermodynamics of haloaromatic oxidation and to their potential use in the situ bioremediation of hazardous organic wastes. A comprehensive listing is made of anaerobic transformations that involve both halogenated and nonhalogenated monoaromatic substrates by denitrifiers, dissimilatory iron-reducing bacteria, and methanogenic consortia. In contrast to other anaerobic processes, studied involving sulfate-mediated metabolism of hazardous organic compounds have been neglected; however, the recent success in defining methanogenic transformations, in particular, has enhanced expectations of defining an analogous role for sulfate-reducing microbial communities in low redox environments that have become contaminated with hazardous substances.
引用
收藏
页码:147 / 165
页数:19
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