Biochar-Based Microbial Fuel Cell

In recent years, microbial fuel cells (MFCs) have gained attention as promising wastewater treatment and power generation technology. One of the main challenges facing MFCs is the low-slung action of the O2 reduction reaction (ORR), which limits their energy storage and conversion efficiency. The carbon-made components of the MFC, for example, the electrodes or catalysts, can be replaced by the organic-rich materials found in agricultural wastes from cropping operations due to their constant availability and high output yield. Even though several studies have examined the use of waste derived-biochar to produce cheap MFCs, such studies have only discussed the various applications of biochar and how the field of MFC applications may develop in the future. The present chapter deals with using biochar as electrode materials in an MFC to enhance its performance and meet the needs of waste-to-energy practices required by sustainable development goals. Next, we’ll look at how biochar may be used as electrodes in MFC. Lastly, the activities of microorganisms in biochar-based MFCs and an analysis of the costs associated with biochar-based electrodes are discussed. This chapter provides essential insights and guidance for developing efficient electrodes for MFCs using biochar.