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Simultaneous hydrogen utilization and in situ biogas upgrading in an anaerobic reactor.
Biotechnol Bioeng. 2012 Apr; 109(4):1088-94.BB

Abstract

The possibility of converting hydrogen to methane and simultaneous upgrading of biogas was investigated in both batch tests and fully mixed biogas reactor, simultaneously fed with manure and hydrogen. Batch experiments showed that hydrogen could be converted to methane by hydrogenotrophic methanogenesis with conversion of more than 90% of the consumed hydrogen to methane. The hydrogen consumption rates were affected by both P(H₂) (hydrogen partial pressure) and mixing intensity. Inhibition of propionate and butyrate degradation by hydrogen (1 atm) was only observed under high mixing intensity (shaking speed 300 rpm). Continuous addition of hydrogen (flow rate of 28.6 mL/(L/h)) to an anaerobic reactor fed with manure, showed that more than 80% of the hydrogen was utilized. The propionate and butyrate level in the reactor was not significantly affected by the hydrogen addition. The methane production rate of the reactor with H₂ addition was 22% higher, compared to the control reactor only fed with manure. The CO₂ content in the produced biogas was only 15%, while it was 38% in the control reactor. However, the addition of hydrogen resulted in increase of pH (from 8.0 to 8.3) due to the consumption of bicarbonate, which subsequently caused slight inhibition of methanogenesis.

Authors+Show Affiliations

Department of Environmental Engineering, Technical University of Denmark, DK-2800, Kgs Lyngby, Denmark.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22068262

Citation

Luo, Gang, et al. "Simultaneous Hydrogen Utilization and in Situ Biogas Upgrading in an Anaerobic Reactor." Biotechnology and Bioengineering, vol. 109, no. 4, 2012, pp. 1088-94.
Luo G, Johansson S, Boe K, et al. Simultaneous hydrogen utilization and in situ biogas upgrading in an anaerobic reactor. Biotechnol Bioeng. 2012;109(4):1088-94.
Luo, G., Johansson, S., Boe, K., Xie, L., Zhou, Q., & Angelidaki, I. (2012). Simultaneous hydrogen utilization and in situ biogas upgrading in an anaerobic reactor. Biotechnology and Bioengineering, 109(4), 1088-94. https://doi.org/10.1002/bit.24360
Luo G, et al. Simultaneous Hydrogen Utilization and in Situ Biogas Upgrading in an Anaerobic Reactor. Biotechnol Bioeng. 2012;109(4):1088-94. PubMed PMID: 22068262.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Simultaneous hydrogen utilization and in situ biogas upgrading in an anaerobic reactor. AU - Luo,Gang, AU - Johansson,Sara, AU - Boe,Kanokwan, AU - Xie,Li, AU - Zhou,Qi, AU - Angelidaki,Irini, Y1 - 2011/11/21/ PY - 2011/08/14/received PY - 2011/10/27/revised PY - 2011/10/28/accepted PY - 2011/11/10/entrez PY - 2011/11/10/pubmed PY - 2012/6/26/medline SP - 1088 EP - 94 JF - Biotechnology and bioengineering JO - Biotechnol Bioeng VL - 109 IS - 4 N2 - The possibility of converting hydrogen to methane and simultaneous upgrading of biogas was investigated in both batch tests and fully mixed biogas reactor, simultaneously fed with manure and hydrogen. Batch experiments showed that hydrogen could be converted to methane by hydrogenotrophic methanogenesis with conversion of more than 90% of the consumed hydrogen to methane. The hydrogen consumption rates were affected by both P(H₂) (hydrogen partial pressure) and mixing intensity. Inhibition of propionate and butyrate degradation by hydrogen (1 atm) was only observed under high mixing intensity (shaking speed 300 rpm). Continuous addition of hydrogen (flow rate of 28.6 mL/(L/h)) to an anaerobic reactor fed with manure, showed that more than 80% of the hydrogen was utilized. The propionate and butyrate level in the reactor was not significantly affected by the hydrogen addition. The methane production rate of the reactor with H₂ addition was 22% higher, compared to the control reactor only fed with manure. The CO₂ content in the produced biogas was only 15%, while it was 38% in the control reactor. However, the addition of hydrogen resulted in increase of pH (from 8.0 to 8.3) due to the consumption of bicarbonate, which subsequently caused slight inhibition of methanogenesis. SN - 1097-0290 UR - https://www.unboundmedicine.com/medline/citation/22068262/Simultaneous_hydrogen_utilization_and_in_situ_biogas_upgrading_in_an_anaerobic_reactor_ L2 - https://doi.org/10.1002/bit.24360 DB - PRIME DP - Unbound Medicine ER -