RT info:eu-repo/semantics/article
T1 Evaluation of process performance, energy consumption and microbiota characterization in a ceramic membrane bioreactor for ex-situ biomethanation of H2 and CO2
A1 Alfaro, Natalia
A1 Fdz-Polanco, María
A1 Fdz-Polanco, Fernando
A1 Díaz, Israel
AB The performance of a pilot ceramic membrane bioreactor for the bioconversion of H2 and CO2 to bioCH4 was evaluated in thermophilic conditions. The loading rate was between 10 and 30m3 H2/m3 reactor d and the system transformed 95% of H2 fed. The highest methane yield found was 0.22m3 CH4/m3 H2, close to the maximum stoichiometric value (0.25m3 CH4/m3 H2) thus indicating that archaeas employed almost all H2 transferred to produce CH4. kLa value of 268 h−1 was reached at 30m3 H2/m3reactor d. DGGE and FISH revealed a remarkable archaeas increase related to the selection-effect of H2 on community composition over time. Methanothermobacterthermautotrophicus was the archaea found with high level of similarity. This study verified the successful application of membrane technology to efficiently transfer H2 from gas to the liquid phase, the development of a hydrogenotrophic community from a conventional thermophilic sludge and the technical feasibility of the bioconversion.
SN 0960-8524
YR 2018
FD 2018
LK https://uvadoc.uva.es/handle/10324/65269
UL https://uvadoc.uva.es/handle/10324/65269
LA spa
NO Bioresource Technology, 258, pp. 142-150
DS UVaDOC
RD 24-nov-2024