This paper provides a mini review on the substrates used in microbial fuel cells (MFCs) either for bioelectricity generation or simultaneous production of bioelectricity and resource recovery/waste treatment. Recent substrates that are being used for simultaneous production of bioelectricity and resource recovery as well as the key challenges for bioelectricity production in an MFC are also discussed. The paper expects to give an informative overview of the current development in the substrates used in MFCs, and to encourage more thinking and investigation towards further development of efficient processes for improved bioelectricity production and resource recovery in MFCs.
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Garba et al. (2017) studied this question.