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Biomethanation of blast furnace gas using anaerobic granular sludge via addition of hydrogen.

ABSTRACT: The high concentrations of CO (toxic) and CO₂ (greenhouse gases) in blast furnace gas (a by-product of steelworks) reflect its low calorific value. In this study, anaerobic granular sludge was used to convert carbon from blast furnace gas to methane via exogenous hydrogen addition. The inhibition of methane production by CO partial pressure (P _CO) was found to start from 0.4 atm. The intermediate metabolites from CO to methane including acetate, propionate, and H₂ accumulated at higher CO concentrations in the presence of 2-bromoethanesulfonic acid. After the introduction of H₂ and blast furnace gas, although the hydrogen partial pressure (P _H₂ ) up to 1.54 atm resulted in the maximum CH₄ yield, the whole system was not stable due to the accumulation of a large amount of volatile fatty acids. The optimum P _H₂ on CH₄ production from the simulated blast furnace gas, 5.32 mmol g^-1 VSS, was determined at 0.88 atm in this study.

SUBMITTER: Wang Y

PROVIDER: S-EPMC9083107 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature

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Biomethanation of blast furnace gas using anaerobic granular sludge via addition of hydrogen.

Wang Ying Y Yin Chenzhu C Liu Ye Y Tan Mengjiao M Shimizu Kazuya K Lei Zhongfang Z Zhang Zhenya Z Sumi Ikuhiro I Yao Yasuko Y Mogi Yasuhiro Y

RSC advances 20180724 46

The high concentrations of CO (toxic) and CO2 (greenhouse gases) in blast furnace gas (a by-product of steelworks) reflect its low calorific value. In this study, anaerobic granular sludge was used to convert carbon from blast furnace gas to methane via exogenous hydrogen addition. The inhibition of methane production by CO partial pressure (P CO) was found to start from 0.4 atm. The intermediate metabolites from CO to methane including acetate, propionate, an ...[more]

PMID: 35541962

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Biomethanation of blast furnace gas using anaerobic granular sludge via addition of hydrogen.

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Biomethanation of blast furnace gas using anaerobic granular sludge <i>via</i> addition of hydrogen.

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