微生物胞外电子传递过程及其应用研究进展

Mechanisms of microbial extracellular electron transfer and its application

电活性微生物的胞外电子传递在微生物电合成、矿物生物浸出、生物质能回收及污染物原位修复等方面表现出广阔的应用前景,因而受到研究者们的广泛关注。现综述近年来电活性微生物胞外电子传递过程及其应用的相关研究成果,指出该领域面临的主要问题和发展方向。未来应加强微生物胞外电子传递路径及分子机制等方面的研究,分离筛选更高效的电活性菌种,优化反应器工艺设计,拓宽电活性微生物的应用领域,提高相应设备的效率。

Extracellular electron transfer （EET） has been attracting more and more attention because its prosperous application potential in microbial electrosynthesis, bioleaching of minerals, recovery of biomass energy and in-situ bioremediation of heavy metals. In this review, we summarized some recent work relevant to EET process of electroactive microorganisms and its applications, and pointed out some main problems and the direction of future researches in this field. In future, in order to broaden the application of electroactive bacteria and improve the output efficiency of electrical equipment, more attention should be paid to the evaluation of electron transfer pathway and molecular mechanism of extracellular respiration, isolation of more efficient electroactive bacteria, and optimization of reactor design.