生物电化学系统处理废气的研究进展

Waste gas removal by bioelectrochemical systems: a review

摘要:

生物电化学系统(Bioelectrochemical systems，BESs)可将污染物的降解转化与电能紧密耦联，具有适用基质广泛、反应过程温和且效率高的特点，在环境污染治理中具有广阔的应用前景。近几年，BESs也逐渐被应用到废气处理。由于微生物和电化学过程的复合作用，BESs显示出较高的处理效率和良好的应用前景。本文在对废气类型、效果及反应器构型进行总结的基础上，还对BESs中的重要功能微生物和微生物电化学反应机理进行介绍和讨论，并对BESs在废气处理方面需要解决的问题和研究方向进行展望，以期为提高生物电化学系统的处理性能提供参考。

关键词:生物电化学，废气，微生物燃料电池，微生物电解池

Abstract:

Bioelectrochemical systems (BESs) couple energy generation with biodegradation and bioconversion of a wide range of contaminants. BESs have increasingly attracted research attentions and would have a broad application prospect in the treatment of environmental pollutants. Recently, BESs are used to treat waste gases. Due to the combined electrochemical and biological processes, BESs generally show higher efficiency and promising application in the treatment of waste gases. Here, we summarize gas types, treatment efficiencies and reactor structures of BESs for waste gas treatment. Moreover, the functional microorganisms and the possible bioelectrochemical mechanisms in those systems are summarized. The main problems needing to be solved in the future are also proposed, with the aim to promote BESs in waste gas treatment.

Key words:Bioelectrochemistry, waste gas, microbial fuel cells, microbial electrolysis cells