TY - JOUR
T1 - Accelerating anaerobic digestion for methane production
T2 - Potential role of direct interspecies electron transfer
AU - Wang, Zixin
AU - Wang, Tengfei
AU - Si, Buchun
AU - Watson, Jamison
AU - Zhang, Yuanhui
N1 - Funding Information:
This work was supported by the National Science Foundation ( NSF CBET 18–04453 ), the National Natural Science Foundation of China ( NSFC 51806243 ), USDA Multi-State Research grants, and the China Scholarship Council Grant ( #201908040007 ).Special thanks to Elsevier, Springer Nature, National Academy of Sciences , John Wiley and Sons, The Royal Society of Chemistry , American Chemical Society , and Molecular Diversity Preservation International for allowing this manuscript to reproduce and adapt the figures with permission. SEM and TEM images in Fig. 2 are reproduced from Refs. [ 34–37 ] with permission from Elsevier, the National Academy of Sciences (Copyright (2006)), Springer Nature, and John Wiley and Sons. Images in Fig. 4 are reproduced from Refs. [ 36 , 39 , 43 ] with permission from Springer Nature, The Royal Society of Chemistry, and the American Chemical Society. Fig. 6 is reproduced from Ref. [ 44 ] with permission from Springer Nature. SEM images in Fig. 10 are reproduced from Refs. [ 98 , 141–149 ] with permission from The Royal Society of Chemistry, Springer Nature, Elsevier, and Molecular Diversity Preservation International.
Funding Information:
This work was supported by the National Science Foundation (NSF CBET 18?04453), the National Natural Science Foundation of China (NSFC 51806243), USDA Multi-State Research grants, and the China Scholarship Council Grant (#201908040007).Special thanks to Elsevier, Springer Nature, National Academy of Sciences, John Wiley and Sons, The Royal Society of Chemistry, American Chemical Society, and Molecular Diversity Preservation International for allowing this manuscript to reproduce and adapt the figures with permission. SEM and TEM images in Fig. 2 are reproduced from Refs. [34?37] with permission from Elsevier, the National Academy of Sciences (Copyright (2006)), Springer Nature, and John Wiley and Sons. Images in Fig. 4 are reproduced from Refs. [36,39,43] with permission from Springer Nature, The Royal Society of Chemistry, and the American Chemical Society. Fig. 6 is reproduced from Ref. [44] with permission from Springer Nature. SEM images in Fig. 10 are reproduced from Refs. [98, 141?149] with permission from The Royal Society of Chemistry, Springer Nature, Elsevier, and Molecular Diversity Preservation International.
Publisher Copyright:
© 2021
PY - 2021/7
Y1 - 2021/7
N2 - 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.
AB - 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.
KW - Anaerobic digestion
KW - Direct interspecies electron transfer (DIET)
KW - Methane production
KW - Microbial interaction
KW - Organic conversion
KW - Syntrophic metabolism
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U2 - 10.1016/j.rser.2021.111069
DO - 10.1016/j.rser.2021.111069
M3 - Review article
AN - SCOPUS:85103943175
VL - 145
JO - Renewable and Sustainable Energy Reviews
JF - Renewable and Sustainable Energy Reviews
SN - 1364-0321
M1 - 111069
ER -