Biomethanation of syngas at high CO concentration in a continuous mode

Yeqing Li; Yinjun Liu; Ximeng Wang; Sen Luo; Dongfang Su; Hao Jiang; Hongjun Zhou; Junting Pan; Lu Feng

doi:10.1016/j.biortech.2021.126407

Biomethanation of syngas at high CO concentration in a continuous mode

Yeqing Li
, Yinjun Liu
, Ximeng Wang
, Sen Luo
, Dongfang Su
, Hao Jiang
, Hongjun Zhou
, Junting Pan
, Lu Feng^*

^*Corresponding author for this work

China University of Petroleum - Beijing
Chinese Academy of Agricultural Sciences
Norwegian Institute of Bioeconomy Research

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

Syngas from pyrolysis/gasification process is a mixture of CO, CO₂ and H₂, which could be converted to CH₄, so called syngas biomethanation. Its development is obstructed due to the low productivity and CO inhibition. The aim of this study was to demonstrate the feasibility of using syngas as the only carbon source containing high CO concentration (40%) for biomethanation. Lab-scale thermophilic bioreactor inoculated with anaerobic sludge was operated continuously for over 900 h and the shift of microbial structure were investigated. Results showed that thermophilic condition was suitable for syngas biomethanation and the microbes could adapt to high CO concentration. Higher processing capacity of 12.6 m³/m³/d was found and volumetric methane yield of 2.97 m³/m³/d was observed. These findings could strengthen the theoretical basis of syngas biomethanation and support its industrialization in the future.

Original language	English
Article number	126407
Journal	Bioresource Technology
Volume	346
DOIs	https://doi.org/10.1016/j.biortech.2021.126407
Publication status	Published - Feb 2022
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Anaerobic digestion
Biomethanation
CO tolerance
Syngas

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10.1016/j.biortech.2021.126407

Cite this

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title = "Biomethanation of syngas at high CO concentration in a continuous mode",

abstract = "Syngas from pyrolysis/gasification process is a mixture of CO, CO2 and H2, which could be converted to CH4, so called syngas biomethanation. Its development is obstructed due to the low productivity and CO inhibition. The aim of this study was to demonstrate the feasibility of using syngas as the only carbon source containing high CO concentration (40\%) for biomethanation. Lab-scale thermophilic bioreactor inoculated with anaerobic sludge was operated continuously for over 900 h and the shift of microbial structure were investigated. Results showed that thermophilic condition was suitable for syngas biomethanation and the microbes could adapt to high CO concentration. Higher processing capacity of 12.6 m3/m3/d was found and volumetric methane yield of 2.97 m3/m3/d was observed. These findings could strengthen the theoretical basis of syngas biomethanation and support its industrialization in the future.",

keywords = "Anaerobic digestion, Biomethanation, CO tolerance, Syngas",

author = "Yeqing Li and Yinjun Liu and Ximeng Wang and Sen Luo and Dongfang Su and Hao Jiang and Hongjun Zhou and Junting Pan and Lu Feng",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

year = "2022",

month = feb,

doi = "10.1016/j.biortech.2021.126407",

language = "English",

volume = "346",

journal = "Bioresource Technology",

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T1 - Biomethanation of syngas at high CO concentration in a continuous mode

AU - Li, Yeqing

AU - Liu, Yinjun

AU - Wang, Ximeng

AU - Luo, Sen

AU - Su, Dongfang

AU - Jiang, Hao

AU - Zhou, Hongjun

AU - Pan, Junting

AU - Feng, Lu

PY - 2022/2

Y1 - 2022/2

N2 - Syngas from pyrolysis/gasification process is a mixture of CO, CO2 and H2, which could be converted to CH4, so called syngas biomethanation. Its development is obstructed due to the low productivity and CO inhibition. The aim of this study was to demonstrate the feasibility of using syngas as the only carbon source containing high CO concentration (40%) for biomethanation. Lab-scale thermophilic bioreactor inoculated with anaerobic sludge was operated continuously for over 900 h and the shift of microbial structure were investigated. Results showed that thermophilic condition was suitable for syngas biomethanation and the microbes could adapt to high CO concentration. Higher processing capacity of 12.6 m3/m3/d was found and volumetric methane yield of 2.97 m3/m3/d was observed. These findings could strengthen the theoretical basis of syngas biomethanation and support its industrialization in the future.

AB - Syngas from pyrolysis/gasification process is a mixture of CO, CO2 and H2, which could be converted to CH4, so called syngas biomethanation. Its development is obstructed due to the low productivity and CO inhibition. The aim of this study was to demonstrate the feasibility of using syngas as the only carbon source containing high CO concentration (40%) for biomethanation. Lab-scale thermophilic bioreactor inoculated with anaerobic sludge was operated continuously for over 900 h and the shift of microbial structure were investigated. Results showed that thermophilic condition was suitable for syngas biomethanation and the microbes could adapt to high CO concentration. Higher processing capacity of 12.6 m3/m3/d was found and volumetric methane yield of 2.97 m3/m3/d was observed. These findings could strengthen the theoretical basis of syngas biomethanation and support its industrialization in the future.

KW - Anaerobic digestion

KW - Biomethanation

KW - CO tolerance

KW - Syngas

UR - https://www.scopus.com/pages/publications/85120787394

U2 - 10.1016/j.biortech.2021.126407

DO - 10.1016/j.biortech.2021.126407

M3 - Article

C2 - 34826564

AN - SCOPUS:85120787394

SN - 0960-8524

VL - 346

JO - Bioresource Technology

JF - Bioresource Technology

M1 - 126407

ER -

Biomethanation of syngas at high CO concentration in a continuous mode

Abstract

UN SDGs

Keywords

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