Biomethanation of syngas at high CO concentration in a continuous mode

文献类型: 外文期刊

第一作者: Li, Yeqing

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

作者机构:

关键词: Anaerobic digestion; Biomethanation; CO tolerance; Syngas

期刊名称:BIORESOURCE TECHNOLOGY ( 影响因子:11.889; 五年影响因子:11.139 )

ISSN: 0960-8524

年卷期: 2022 年 346 卷

页码:

收录情况: SCI

摘要: Syngas from pyrolysis/gasification process is a mixture of CO, CO2 and H-2, 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 m(3)/m(3)/d was found and volumetric methane yield of 2.97 m(3)/m(3)/d was observed. These findings could strengthen the theoretical basis of syngas biomethanation and support its industrialization in the future.

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