The Utility of Electrochemical Systems in Microbial Degradation of Polycyclic Aromatic Hydrocarbons: Discourse, Diversity and Design.
The Utility of Electrochemical Systems in Microbial Degradation of Polycyclic Aromatic Hydrocarbons: Discourse, Diversity and Design.
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电化学系统在多环芳烃微生物降解中的应用：论述、多样性和设计。
DOI：
10.3389/fmicb.2020.557400
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发表时间：
2020
影响因子：
5.2
通讯作者：
Wang LF
中科院分区：
文献类型：
--
作者：
Hao DC;Li XJ;Xiao PG;Wang LF
多环芳烃（PAHs），特别是高分子量的多环芳烃，是一种难降解的致癌、致突变有机化合物。微生物修复是一种广泛应用于各种环境中的多环芳烃去除方法，但由于缺乏电子受体而受到限制。一种新兴的解决方案是使用微生物电化学系统，在该系统中，固体阳极作为一个取之不尽的电子受体，并通过生物电流原位刺激微生物活性，以确保PAH的去除，避免生物修复的缺陷。本文在广泛调研近年来国内外文献的基础上，对多样化设计、强化措施和功能性微生物等微生物电化学系统去除多环芳烃的研究进展进行了综述和评述。首先，从多环芳烃的单独降解和混合降解两个方面综述了多环芳烃的生物电化学降解，并比较了阳极修饰、强化底物和电子传递、添加化学试剂以及与植物修复相结合等不同系统配置对多环芳烃的去除效果。其次，概述了关键功能微生物群，包括多环芳烃降解微生物和外生产电菌，以及没有竞争优势的减少的微生物。最后，综述了电化学活性的典型表征，特别是系统的内阻、功率密度和电流密度及其影响因素，并对多环芳烃的去除与能量产生进行了相关性分析。目前，多环芳烃生物电化学降解的研究主要集中在阳极修饰上，但实际上需要更多的关注以增强传质从而扩大修复半径，并提出了其他智能设计，特别是植物修复的组合使用可能是一种生态友好和可持续的方法。此外，外泌电原与PAH降解物之间存在部分重叠，但相互作用网络的确切功能机制尚不清楚，借助先进的生物信息学技术可以揭示这一点。为了优化功能群落的功效，未来的研究应考虑更先进的技术，如组学技术、光电催化和纳米技术，以同时提高能量产生和PAH降解率。
Polycyclic aromatic hydrocarbons (PAHs), especially high molecular weight PAHs, are carcinogenic and mutagenic organic compounds that are difficult to degrade. Microbial remediation is a popular method for the PAH removal in diverse environments and yet it is limited by the lack of electron acceptors. An emerging solution is to use the microbial electrochemical system, in which the solid anode is used as an inexhaustible electron acceptor and the microbial activity is stimulated by biocurrent in situ to ensure the PAH removal and avoid the defects of bioremediation. Based on the extensive investigation of recent literatures, this paper summarizes and comments on the research progress of PAH removal by the microbial electrochemical system of diversified design, enhanced measures and functional microorganisms. First, the bioelectrochemical degradation of PAHs is reviewed in separate and mixed PAH degradation, and the removal performance of PAHs in different system configurations is compared with the anode modification, the enhancement of substrate and electron transfer, the addition of chemical reagents, and the combination with phytoremediation. Second, the key functional microbiota including PAH degrading microbes and exoelectrogens are overviewed as well as the reduced microbes without competitive advantage. Finally, the typical representations of electrochemical activity especially the internal resistance, power density and current density of systems and influence factors are reviewed with the correlation analysis between PAH removal and energy generation. Presently, most studies focused on the anode modification in the bioelectrochemical degradation of PAHs and actually more attentions need to be paid to enhance the mass transfer and thus larger remediation radius, and other smart designs are also proposed, especially that the combined use of phytoremediation could be an eco-friendly and sustainable approach. Additionally, exoelectrogens and PAH degraders are partially overlapping, but the exact functional mechanisms of interaction network are still elusive, which could be revealed with the aid of advanced bioinformatics technology. In order to optimize the efficacy of functional community, more advanced techniques such as omics technology, photoelectrocatalysis and nanotechnology should be considered in the future research to improve the energy generation and PAH biodegradation rate simultaneously.
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影响因子：
3.7
作者：
Kouzuma A;Kasai T;Nakagawa G;Yamamuro A;Abe T;Watanabe K
通讯作者：
Watanabe K
DOI：
10.1016/j.ibiod.2015.03.014
发表时间：
2015-07-01
影响因子：
4.8
作者：
Isaac, Paula;Martinez, Fabiana L.;Ferrero, Marcela A.
通讯作者：
Ferrero, Marcela A.
DOI：
10.1590/s1517-838246120131354
发表时间：
2015-03
期刊：
Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology]
影响因子：
--
作者：
Bisht S;Pandey P;Bhargava B;Sharma S;Kumar V;Sharma KD
通讯作者：
Sharma KD
影响因子：
17.1
作者：
Ding, Mengning;Shiu, Hui-Ying;Duan, Xiangfeng
通讯作者：
Duan, Xiangfeng
影响因子：
5.1
作者：
Kleindienst, Sara;Ramette, Alban;Knittel, Katrin
通讯作者：
Knittel, Katrin