Accelerating anaerobic digestion for methane production: Potential role of direct interspecies electron transfer

Zixin Wang, Tengfei Wang, Buchun Si, Jamison Watson and Yuanhui Zhang

Renewable and Sustainable Energy Reviews, 2021, vol. 145, issue C

Abstract: Anaerobic digestion is a commercial technology utilized to produce bioenergy from waste streams. However, anaerobic digestion suffers from inefficient interspecies electron transfer between syntrophic bacteria and methanogens, which limits its reaction rate and even leads to termination of the process. Direct interspecies electron transfer (DIET) has been recognized as a faster and more stable means to transport reducing equivalents between bacteria and archaea, demonstrating great potential to enhance the rate limiting steps during anaerobic digestion. The present paper reviews the DIET process with different mechanisms and related microbial syntrophic associations, discusses the role of DIET during the degradation of organics, investigates its start-up performance, and quantifies its methane production. Moreover, this paper aims to assess the design of an enhanced anaerobic process with DIET with respect to high-rate reactors, substrate stimulation, the effects of conductive materials, and its long-term operation, which has been rarely discussed before. The understanding of DIET is still in its infancy; thus, the present paper provides a comprehensive review on the whole process and points out the direction for its potential industrial application.

Keywords: Direct interspecies electron transfer (DIET); Anaerobic digestion; Methane production; Microbial interaction; Organic conversion; Syntrophic metabolism (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (11)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S1364032121003579
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:rensus:v:145:y:2021:i:c:s1364032121003579

Ordering information: This journal article can be ordered from
http://www.elsevier.com/wps/find/journaldescription.cws_home/600126/bibliographic
http://www.elsevier. ... 600126/bibliographic

DOI: 10.1016/j.rser.2021.111069

Access Statistics for this article

Renewable and Sustainable Energy Reviews is currently edited by L. Kazmerski

More articles in Renewable and Sustainable Energy Reviews from Elsevier
Bibliographic data for series maintained by Catherine Liu ().