TY - JOUR
T1 - On-site CO2 bio-sequestration in anaerobic digestion
T2 - Current status and prospects
AU - Xu, Suyun
AU - Qiao, Zihao
AU - Luo, Liwen
AU - Sun, Yongqi
AU - Wong, Jonathan Woon Chung
AU - Geng, Xueyu
AU - Ni, Jing
N1 - Funding Information:
The authors of this study would like to thank the financial support from National Natural Science Foundation of China (51978595).
Publisher Copyright:
© 2021 Elsevier Ltd.
PY - 2021/7
Y1 - 2021/7
N2 - The advantages of anaerobic digestion (AD) technology in organic solid waste treatment for bioenergy recovery are evidenced in worldwide. Recently, more attention has been paid to on-site biogas research, as well as biogenic CO2 sequestration from AD plant, to promote “carbon neutral”. Single-phase and two-phase AD system can be incorporated with various CO2 bioconversion technologies through H2 mediated CO2 bioconversion (in-situ and ex-situ biogas upgrading), or other emerging strategies for CO2 fixation without exogenous H2 injection; these include in-situ direct interspecies electron transfer reinforcement, electromethanogenesis, and off-gas reutilization. The existing and potential scenarios for on-site CO2 bio-sequestration within the AD framework are reviewed from the perspectives of metabolic pathways, functional microorganisms, the limitations on reaction kinetics. This review concluded that on-site CO2 bio-sequestration is a promising solution to reduce greenhouse gas emissions and increase renewable energy recovery.
AB - The advantages of anaerobic digestion (AD) technology in organic solid waste treatment for bioenergy recovery are evidenced in worldwide. Recently, more attention has been paid to on-site biogas research, as well as biogenic CO2 sequestration from AD plant, to promote “carbon neutral”. Single-phase and two-phase AD system can be incorporated with various CO2 bioconversion technologies through H2 mediated CO2 bioconversion (in-situ and ex-situ biogas upgrading), or other emerging strategies for CO2 fixation without exogenous H2 injection; these include in-situ direct interspecies electron transfer reinforcement, electromethanogenesis, and off-gas reutilization. The existing and potential scenarios for on-site CO2 bio-sequestration within the AD framework are reviewed from the perspectives of metabolic pathways, functional microorganisms, the limitations on reaction kinetics. This review concluded that on-site CO2 bio-sequestration is a promising solution to reduce greenhouse gas emissions and increase renewable energy recovery.
KW - Anaerobic digestion
KW - Biogas upgrading
KW - CO2 sequestration
KW - Hydrogen
KW - Methanogenesis
UR - http://www.scopus.com/inward/record.url?scp=85103926196&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2021.125037
DO - 10.1016/j.biortech.2021.125037
M3 - Review article
C2 - 33840612
AN - SCOPUS:85103926196
SN - 0960-8524
VL - 332
JO - Bioresource Technology
JF - Bioresource Technology
M1 - 125037
ER -
