Waste valorization using solid-phase microbial fuel cells (SMFCs): Recent trends and status

This review article discusses the use of solid waste processed in solid-phase microbial fuel cells (SMFCs) as a source of electrical energy. Microbial Fuel Cells (MFCs) are typically operated in the liquid phase because the ion transfer process is efficient in liquid media. Nevertheless, some resear...

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Bibliographic Details
Published in:Journal of environmental management 2021-01, Vol.277, p.111417-111417, Article 111417
Main Authors: Budihardjo, Mochamad Arief, Syafrudin, Effendi, Agus Jatnika, Hidayat, Syarif, Purnawan, Candra, Lantasi, Ayudya Izzati Dyah, Muhammad, Fadel Iqbal, Ramadan, Bimastyaji Surya
Format: Article
Language:English
Subjects:
Anaerobic digestion
Compost
Mass transfer
Microbial fuel cells
Solid-phase
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Summary:This review article discusses the use of solid waste processed in solid-phase microbial fuel cells (SMFCs) as a source of electrical energy. Microbial Fuel Cells (MFCs) are typically operated in the liquid phase because the ion transfer process is efficient in liquid media. Nevertheless, some researchers have considered the potential for MFCs in solid phases (particularly for treating solid waste). This has promise if several important factors are optimized, such as the type and amount of substrate, microorganism community, system configuration, and type and number of electrodes, which increases the amount of electricity generated. The critical factor that affects the SMFC performance is the efficiency of electron and proton transfer through solid media. However, this limitation may be overcome by electrode system enhancements and regular substrate mixing. The integration of SMFCs with other conventional solid waste treatments could be used to produce sustainable green energy. Although SMFCs produce relatively small amounts of energy compared with other waste-to-energy treatments, SMFCs are still promising to achieve zero-emission treatment. Therefore, this article addresses the challenges and fills the gaps in SMFC research and development. •Solid-phase microbial fuel cells (SMFCs) could process organic waste into direct electricity.•The results of electricity generation have been summarized from the literature.•Ion and mass transfer are the biggest limitation of SMFCs.•SMFCs is promising to achieve zero discharge treatment of solid waste.•Integration of SMFCs with other conventional solid waste treatment is investigated.
ISSN:0301-4797
1095-8630
DOI:10.1016/j.jenvman.2020.111417