Recent advances in methanogenesis through direct interspecies electron transfer via conductive materials: A molecular microbiological perspective

Hyun Jin Kang, Sang Hoon Lee, Tae Guen Lim, Jeong Hoon Park, Boram Kim, Pierre Buffière, Hee Deung Park

Research output: Contribution to journalReview articlepeer-review

Abstract

Conductive materials can serve as biocatalysts during direct interspecies electron transfer for methanogenesis in anaerobic reactors. However, the mechanism promoting direct interspecies electron transfer in anaerobic reactors, particularly under environments in which diverse substrates and microorganisms coexist, remains to be elucidated from a scientific or an engineering point of view. Currently, many molecular microbiological approaches are employed to understand the fundamentals of this phenomenon. Here, the direct interspecies electron transfer mechanisms and relevant microorganisms identified to date using molecular microbiological methods were critically reviewed. Moreover, molecular microbiological methods for direct interspecies electron transfer used in previous studies and important findings thus revealed were analyzed. This review will help us better understand the phenomena of direct interspecies electron transfer using conductive materials and offer a framework for future molecular microbiological studies.

Original languageEnglish
Article number124587
JournalBioresource technology
Volume322
DOIs
Publication statusPublished - 2021 Feb

Keywords

  • Conductive material
  • Direct interspecies electron transfer (DIET)
  • Endoelectrogen
  • Exoelectrogen
  • Methanogenesis

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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