4.8 Review

Defined and unknown roles of conductive nanoparticles for the enhancement of microbial current generation: A review

期刊

BIORESOURCE TECHNOLOGY
卷 350, 期 -, 页码 -

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2022.126844

关键词

Extracellular electron transfer; Bioelectrochemical system; Microbial fuel cells; Microbial electrosynthesis; Biocorrosion; Biogenic nanoparticles

资金

  1. Japan Society for Promotion of Science KAKENHI [20H05590, 21K20546]
  2. Japan Agency for Medical Research and Development [19gm6010002h0004]
  3. JST, PRESTO [JPMJPR19H1]
  4. JAEA Nuclear Energy SAMP
  5. T and Human Resource Development Project Through Concentrating Wisdom Grant [JPJA20P20333393]
  6. Murata Science Foundation
  7. Grants-in-Aid for Scientific Research [21K20546, 20H05590] Funding Source: KAKEN

向作者/读者索取更多资源

This review summarizes the mechanisms for enhancing current production in microbial fuel cells and microbial electrosynthesis, and discusses the critical factors for metallic and semiconductive nanoparticles to enhance microbial current generation. It also discusses the implications for microbially induced iron corrosion, photochemically driven microbial electrosynthesis, and several future research directions to further enhance microbial current generation.
The ability of various bacteria to make use of solid substrates through extracellular electron transfer (EET) or extracellular electron uptake (EEU) has enabled the development of valuable biotechnologies such as microbial fuel cells (MFCs) and microbial electrosynthesis (MES). It is common practice to use metallic and semiconductive nanoparticles (NPs) for microbial current enhancement. However, the effect of NPs is highly variable between systems, and there is no clear guideline for effectively increasing the current generation. In the present review, the proposed mechanisms for enhancing current production in MFCs and MES are summarized, and the critical factors for NPs to enhance microbial current generation are discussed. Implications for microbially induced iron corrosion, where iron sulfide NPs are proposed to enhance the rate of EEU, photochemically driven MES, and several future research directions to further enhance microbial current generation, are also discussed.

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