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^*

^*此作品的通讯作者

科研成果: 期刊稿件 › 文章 › 同行评审

14 引用（Scopus）

摘要

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.

源语言	英语
文章编号	126407
期刊	Bioresource Technology
卷	346
DOI	https://doi.org/10.1016/j.biortech.2021.126407
出版状态	已出版 - 2月 2022
已对外发布	是

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Li, Y., Liu, Y., Wang, X., Luo, S., Su, D., Jiang, H., Zhou, H., Pan, J., & Feng, L. (2022). Biomethanation of syngas at high CO concentration in a continuous mode. Bioresource Technology, 346, 文章 126407. https://doi.org/10.1016/j.biortech.2021.126407

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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",

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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

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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

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