title: Biocatalytic methanation of hydrogen and carbon dioxide in a fixed bed bioreactor.
abstract: Biocatalytic methanation of H2 and CO2 was studied in a fixed bed reactor system consisting of two solid state bioreactors in series connected to a recirculation system. Bioreactors were packed with a mixture of vermiculite shales and granular perlite material as a support material. A maximal methane productivity of 6.35l/lreactord was achieved at a hydrogen feed rate of 25.2l/lreactord, while hydrogen conversion rate was 100%. However, stable operation of the reactor at this efficiency remains to be achieved. Very simple reactor design, constructed from low cost materials, and the idea of exploiting waste material as a robust source of nutrients for methanogens makes this study very interesting regarding the overall usability and suitability of the system as part of a decentralized energy system.
authors: Natural Resources Institute Finland (Luke), Viikinkaari 4, FI-00790 Helsinki, Finland. Electronic address: anni.alitalo@luke.fi.
authors: Anni
authors: A
authors: Alitalo
authors: Natural Resources Institute Finland (Luke), Viikinkaari 4, FI-00790 Helsinki, Finland.
authors: Marko
authors: M
authors: Niskanen
authors: Biotaito, Killintie 14, FI-31300 Tammela, Finland.
authors: Erkki
authors: E
authors: Aura
mesh_terms: D019149:Bioreactors / Q000382:microbiology*; D002245:Carbon Dioxide / Q000378:metabolism*; D019605:Euryarchaeota; D006859:Hydrogen / Q000378:metabolism*; D008697:Methane / Q000378:metabolism*
chemical_list: D002245:Carbon Dioxide; D006859:Hydrogen; D008697:Methane
keywords: Hydrogen; Hydrogenotrophic methanogens; Methane production; Methanogens; Power to gas