Bioelectrohydrogenesis and inhibition of methanogenic activity in microbial electrolysis cells - A review

Rengasamy Karthikeyan, Ka Yu Cheng, Ammaiyappan Selvam, Arpita Bose, Jonathan W C WONG*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

25 Citations (Scopus)

Abstract

Microbial electrolysis cells (MECs) are a promising technology for biological hydrogen production. Compared to abiotic water electrolysis, a much lower electrical voltage (~ 0.2 V) is required for hydrogen production in MECs. It is also an attractive waste treatment technology as a variety of biodegradable substances can be used as the process feedstock. Underpinning this technology is a recently discovered bioelectrochemical pathway known as “bioelectrohydrogenesis”. However, little is known about the mechanism of this pathway, and numerous hurdles are yet to be addressed to maximize hydrogen yield and purity. Here, we review various aspects including reactor configurations, microorganisms, substrates, electrode materials, and inhibitors of methanogenesis in order to improve hydrogen generation in MECs.

Original languageEnglish
Pages (from-to)758-771
Number of pages14
JournalBiotechnology Advances
Volume35
Issue number6
DOIs
Publication statusPublished - 1 Nov 2017

Scopus Subject Areas

  • Biotechnology
  • Bioengineering
  • Applied Microbiology and Biotechnology

User-Defined Keywords

  • Bioelectrohydrogenesis
  • Hydrogen
  • Inhibitor
  • Methane
  • Methanogenesis
  • Microbial electrolysis cell

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