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Graphene and biochar-based cathode catalysts for microbial fuel cell: Performance evaluation, economic comparison,
Anil Dhanda1, Rishabh Raj2, S M Sathe1
1Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, West Bengal, India.
Environmental Research
|May 15, 2023
Summary
This review compares biochar and graphene cathode catalysts for microbial fuel cells (MFCs). It assesses their techno-economic performance and environmental impact for wastewater treatment and electricity generation.
Area of Science:
- Electrochemistry
- Environmental Science
- Materials Science
Background:
- Microbial fuel cells (MFCs) offer simultaneous wastewater treatment and electricity generation.
- Oxygen reduction reaction (ORR) is a limiting factor in MFC performance, often requiring catalysts.
- Conventional catalysts are costly; carbon-based alternatives like biochar and graphene are explored.
Conclusions:
- Both biochar and graphene show promise as MFC cathode catalysts.
- The choice between biochar and graphene depends on a balance of performance, cost, and sustainability goals.
- Further research is needed to optimize biochar for ORR and to fully assess the life cycle impacts.
