Journal
BIORESOURCE TECHNOLOGY
Volume 196, Issue -, Pages 600-605Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.08.021
Keywords
Hydrogen; Hydrogenotrophic methanogens; Methane production; Methanogens; Power to gas
Funding
- Tekes - the Finnish Funding Agency for Innovation
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Biocatalytic methanation of H-2 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 6.35 l/l(reactor) d was achieved at a hydrogen feed rate of 25.2 l/l(reactor) d, 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. (C) 2015 Elsevier Ltd. All rights reserved.
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