New horizons in microbial fuel cell technology: applications, challenges, and prospects

Area of Science:

• Biotechnology and Renewable Energy

Background:

• Microbial fuel cells (MFCs) offer sustainable energy by converting organic waste into electricity.
• Nanotechnology advancements have significantly improved MFC performance, focusing on electron transfer and material properties.

Purpose of the Study:

• To review the fundamental components, microbial roles, and optimization strategies of MFCs.
• To explore the application potential of MFCs in bioremediation, wastewater treatment, and biosensing.
• To identify challenges and propose innovative solutions for MFC commercialization.

Main Methods:

• Assessment of MFC components: anode, cathode, and proton exchange membrane (PEM).
• Analysis of microbial roles in extracellular electron transfer (EET).
• Review of biomass pretreatment and MFC optimization techniques (electrode modification, pH control).

Main Results:

• Nanotechnology integration enhances MFC efficiency through improved electron transfer and material optimization.
• Biomass pretreatment and operational strategies significantly impact energy output.
• MFCs show broad application potential, especially in biosensing for environmental and medical uses.

Conclusions:

• Nanotechnology-enabled MFCs, coupled with engineered microbes and optimized designs, promise advancements in sustainable energy and biosensing.
• Addressing challenges like low power output and biofouling is crucial for large-scale MFC adoption.