May H. Wang

Hainan Institute of Biotechnology, Haikou, 570206, Hainan, China
Author    Correspondence author
Journal of Energy Bioscience, 2024, Vol. 15, No. 2   doi: 10.5376/jeb.2024.15.0009
Received: 28 Jan., 2024    Accepted: 01 Mar., 2024    Published: 13 Mar., 2024

This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Wang M.H., 2024, Study on electron transfer mechanisms of electroactive bacteria in microbial fuel cells, Journal of Energy Bioscience, 15(2): 87-97 (doi: 10.5376/jeb.2024.15.0009)

Electroactive bacteria (EAB) play a crucial role in microbial fuel cells (MFCs) by facilitating electron transfer processes that are essential for energy generation and environmental remediation. This review paper delves into the molecular mechanisms underlying electron transfer in EAB, highlighting recent advancements and key differences between Gram-positive and Gram-negative bacteria. The review also explores the diversity of electroactive microorganisms, including iron-reducing bacteria and electrotrophic microorganisms, and their applications in bioelectrochemical systems. Strategies to enhance electron transfer efficiency, such as the use of electron-conducting polymers and nanostructured materials, are discussed. Additionally, the role of cell-surface exposed conductive proteins and the impact of biofilm spatial structure on electron transfer efficiency are examined. This research aims to provide a deeper understanding of the electron transfer mechanisms in EAB, thereby contributing to the optimization and advancement of microbial fuel cell technologies.

Rapeseed oil; Biodiesel; Production process; Economic analysis; Sustainable development