Electron transfer mechanisms, characteristics and applications of biological cathode microbial fuel cells – A mini review

• Main Authors: Hai-Liang Song, Ying Zhu, Jie Li
• Format: Article
• Language: English
• Published: Elsevier 2019-12-01
• Series: Arabian Journal of Chemistry
• Online Access: http://www.sciencedirect.com/science/article/pii/S187853521500026X

Since the microbial fuel cells (MFCs) research in the laboratory has reached an unprecedented success, it has raised a research upsurge internationally in recent years. However, compared with laboratory studies, the widespread applications of the conventional MFCs were restrained by the limitations of high cost and low efficiency. This stimulates researchers to overcome the obstacles. In this condition, bio-cathodes attracted their great interests. This paper is a brief review about the experimental progress of bio-cathodes in microbial fuel cells with an emphasis on the classification according to the final electron acceptors and the comparison with the traditional abiotic cathode MFCs. Bio-cathodes are feasible in removing nutrient in wastewater treatment and being used as biosensors in bioremediation. Presently, tremendous efforts are being made in investigating appropriate electrodes and dominant strains to achieve the effective practical applications. Keywords: Microbial fuel cell, Bio-cathode, Final electron acceptor, Wastewater treatment, Biosensors