TY - JOUR
T1 - Microbial electrosynthesis from CO2: Challenges, opportunities and perspectives in the context of circular bioeconomy.
AU - Bian, Bin
AU - Bajracharya, Suman
AU - Xu, Jiajie
AU - Pant, Deepak
AU - Saikaly, Pascal
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was supported by Competitive Research Grant (URF/ 1/2985-01-01) from KAUST to PS.
PY - 2020/2/6
Y1 - 2020/2/6
N2 - Recycling CO2 into organic products through microbial electrosynthesis (MES) is attractive from the perspective of circular bioeconomy. However, several challenges need to be addressed before scaling-up MES systems. In this review, recent advances in electrode materials, microbe-catalyzed CO2 reduction and MES energy consumption are discussed in detail. Anode materials are briefly reviewed first, with several strategies proposed to reduce the energy input for electron generation and enhance MES bioeconomy. This was followed by discussions on MES cathode materials and configurations for enhanced chemolithoautotroph growth and CO2 reduction. Various chemolithoautotrophs, effective for CO2 reduction and diverse bioproduct formation, on MES cathode were also discussed. Finally, research efforts on developing cost-effective process for bioproduct extraction from MES are presented. Future perspectives to improve product formation and reduce energy cost are discussed to realize the application of the MES as a chemical production platform in the context of building a circular economy.
AB - Recycling CO2 into organic products through microbial electrosynthesis (MES) is attractive from the perspective of circular bioeconomy. However, several challenges need to be addressed before scaling-up MES systems. In this review, recent advances in electrode materials, microbe-catalyzed CO2 reduction and MES energy consumption are discussed in detail. Anode materials are briefly reviewed first, with several strategies proposed to reduce the energy input for electron generation and enhance MES bioeconomy. This was followed by discussions on MES cathode materials and configurations for enhanced chemolithoautotroph growth and CO2 reduction. Various chemolithoautotrophs, effective for CO2 reduction and diverse bioproduct formation, on MES cathode were also discussed. Finally, research efforts on developing cost-effective process for bioproduct extraction from MES are presented. Future perspectives to improve product formation and reduce energy cost are discussed to realize the application of the MES as a chemical production platform in the context of building a circular economy.
UR - http://hdl.handle.net/10754/661487
UR - https://linkinghub.elsevier.com/retrieve/pii/S0960852420301322
UR - http://www.scopus.com/inward/record.url?scp=85078837849&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2020.122863
DO - 10.1016/j.biortech.2020.122863
M3 - Article
C2 - 32019708
SN - 0960-8524
SP - 122863
JO - Bioresource technology
JF - Bioresource technology
ER -