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In-situ biomethanation of high CO content syngas in agricultural biogas digesters

Author

Listed:
  • Kamravamanesh, Donya
  • Rinta-Kanto, Johanna M.
  • Myllärinen, Antti
  • Saalasti, Mikko
  • Rintala, Jukka
  • Kokko, Marika

Abstract

To meet global energy demands, syngas with high CO content (>50 %) generated from hydrothermal gasification of agricultural residues or wood, could be utilized as a co-substrate in anaerobic digestion (AD) processes for conversion into CH4. This study investigated in-situ biomethanation using synthetic gas (55 % CO, 35 % H2, and 15 % CO2), mimicking wood gasification syngas, during AD of cow manure, the most abundant agricultural waste. A continuously stirred tank reactor (CSTR) served as a control and was fed only cow manure, while the other two reactors were fed syngas with or without gas recirculation at different gas loading rates (GLRs).

Suggested Citation

  • Kamravamanesh, Donya & Rinta-Kanto, Johanna M. & Myllärinen, Antti & Saalasti, Mikko & Rintala, Jukka & Kokko, Marika, 2024. "In-situ biomethanation of high CO content syngas in agricultural biogas digesters," Renewable Energy, Elsevier, vol. 232(C).
    • Handle: RePEc:eee:renene:v:232:y:2024:i:c:s0960148124011248
    DOI: 10.1016/j.renene.2024.121056
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