生物电化学系统还原CO2合成燃料或有机化工产品近年来已成为环境微生物学的研究热点。首先就生物电化学系统的工作原理、生物电化学系统还原CO2产甲烷的阴极功能微生物、生物电化学系统还原CO2产甲烷的机制、生物电化学系统的反应器及影响生物电化学系统还原CO2产甲烷的因素等方面的研究进展进行了综述，然后分析了生物电化学系统还原CO2产甲烷存在的问题，并讨论了其今后的重点研究方向，以期为生物电化学系统还原CO2产甲烷研究提供参考。

Reduction of CO2 to fuels and industrial chemicals with bioelectrochemical system has been widely studied. This review focuses on recent development in methane production from CO2 with bioelectrochemical systems, which includes the functional microbe used in cathode, the mechanism of conversing CO2 to methanewith bioelectrochemical systems, and the influence factors of the conversion of CO2 to methane as well as the reactors of bioelectrochemical systems. After that, problems of conversing CO2 to methane with bioelectrochemical system are analyzed, and the directions of future research are also discussed. This review aims to motivate and inspire further research for the conversing CO2 to methane with bioelectrochemical systems.

国家自然科学基金(31460142、31360126)；内蒙古自治区高等学校科学技术研究(NJZY150)；内蒙古科技大学创新基金(2014QDL001)；内蒙古自治区重大基础研究开放课题(20120908)