Decolorization and Degradation of Azo Dyes by Redox Mediator System with Bacteria
Decolorization and Degradation of Azo Dyes by Redox Mediator System with Bacteria
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DOI：
10.1007/698_2009_46
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发表时间：
2010-01-01
期刊：
影响因子：
--
通讯作者：
Yang, Jingliang
中科院分区：
文献类型：
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作者：
Guo, Jianbo;Kang, Li;Yang, Jingliang
偶氮染料是最大、种类最多的一类合成染料，广泛应用于许多工业领域，但由于其具有异生物性，通常难以生物降解。偶氮染料废水的有效处理一直是一个很大的挑战，到目前为止，还没有一个单一的和经济上有吸引力的处理方法，可以有效地脱色染料。然而，在过去的二十年里，已经取得了显着的成就，探索不同的氧化还原介质在厌氧脱色和降解偶氮染料的加速效果。大量的研究表明，氧化还原介体在偶氮染料的还原脱色过程中起着重要的电子穿梭作用。本文综述了氧化还原介体催化偶氮染料细菌脱色降解的研究进展，并展望了氧化还原介体在偶氮染料生物转化中的应用前景。
Azo dyes are the largest and the most diverse group of synthetic dyes widely used in many industries, which are generally recalcitrant to biodegradation due to their xenobiotic nature. The effective treatment of azo dye wastewaters has been a big challenge, and up to now there is no single and economically attractive treatment that can effectively decolorize dyes. However, notable achievements have been conducted to explore the accelerating effects of different redox mediators during the anaerobic decolorization and degradation of azo dyes over the last two decades. The accumulated evidence suggest that redox mediators play a major role of electron shuttles in the reductive decolorization of azo dyes, both by chemical and biological mechanisms. This review is focused on the bacterial decolorization and degradation of azo dyes catalyzed by redox mediators and the further investigation to enhance the applicability of redox mediators on the bio-transformation of azo dyes.