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Versatile mechanisms and enhanced strategies of pollutants removal mediated by Shewanella oneidensis: A review
Journal of Hazardous Materials ( IF 13.6 ) Pub Date : 2022-07-30 , DOI: 10.1016/j.jhazmat.2022.129703
Yue Yin 1 , Chao Liu 1 , Guohua Zhao 2 , Yinguang Chen 1
Affiliation  

The removal of environmental pollutants is important for a sustainable ecosystem and human health. Shewanella oneidensis (S. oneidensis) has diverse electron transfer pathways and can use a variety of contaminants as electron acceptors or electron donors. This paper reviews S. oneidensis’s function in removing environmental pollutants, including heavy metals, inorganic non-metallic ions (INMIs), and toxic organic pollutants. S. oneidensis can mineralize o-xylene (OX), phenanthrene (PHE), and pyridine (Py) as electron donors, and also reduce azo dyes, nitro aromatic compounds (NACs), heavy metals, and iodate by extracellular electron transfer (EET). For azo dyes, NACs, Cr(VI), nitrite, nitrate, thiosulfate, and sulfite that can cross the membrane, S. oneidensis transfers electrons to intracellular reductases to catalyze their reduction. However, most organic pollutants cannot be directly degraded by S. oneidensis, but S. oneidensis can remove these pollutants by self-synthesizing catalysts or photocatalysts, constructing bio-photocatalytic systems, driving Fenton reactions, forming microbial consortia, and genetic engineering. However, the industrial-scale application of S. oneidensis is insufficient. Future research on the metabolism of S. oneidensis and interfacial reactions with other materials needs to be deepened, and large-scale reactors should be developed that can be used for practical engineering applications.



中文翻译:

Shewanella oneidensis 介导的污染物去除的多功能机制和增强策略:综述

去除环境污染物对于可持续的生态系统和人类健康非常重要。Shewanella oneidensis ( S. oneidensis ) 具有多种电子转移途径,可以使用多种污染物作为电子受体或电子供体。本文回顾了S. oneidensis在去除环境污染物中的作用,包括重金属、无机非金属离子 (INMIs) 和有毒有机污染物。S. oneidensis可以矿化邻二甲苯 (OX)、菲 (PHE) 和吡啶 (Py) 作为电子供体,还可以通过细胞外电子转移 (EET) 还原偶氮染料、硝基芳香化合物 (NAC)、重金属和碘酸盐。对于可以穿过膜的偶氮染料、NAC、Cr(VI)、亚硝酸盐、硝酸盐、硫代硫酸盐和亚硫酸盐,S. oneidensis将电子转移到细胞内还原酶以催化它们的还原。然而,大多数有机污染物不能被S. oneidensis直接降解,但S. oneidensis可以通过自合成催化剂或光催化剂、构建生物光催化体系、驱动Fenton反应、形成微生物群落和基因工程等方式去除这些污染物。然而,工业规模的应用S. oneidensis是不够的。未来对S. oneidensis的代谢和与其他材料的界面反应的研究需要深化,应开发可用于实际工程应用的大型反应器。

更新日期:2022-07-30
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