Peer-Reviewed Journal Details
Mandatory Fields
Guneratnam, Amita Jacob; Ahern, Eoin; FitzGerald, Jamie A.; Jackson, Stephen A.; Xia, Ao; Dobson, Alan D. W.; Murphy, Jerry D.
2017
February
Bioresource Technology
Study of the performance of a thermophilic biological methanation system
Published
Optional Fields
Biogas Power to gas Biological methanation Methanogenic archaea Volatile fatty acids
225
308
315
This study investigated the operation of ex-situ biological methanation at two thermophilic temperatures (55 C and 65 C). Methane composition of 8588% was obtained and volumetric productivities of 0.45 and 0.4 L CH4/L reactor were observed at 55 C and 65 C after 24 h respectively. It is postulated that at 55 C the process operated as a mixed culture as the residual organic substrates in the starting inoculum were still available. These were consumed prior to the assessment at 65 C; thus the methanogens were now dependent on gaseous substrates CO2 and H2. The experiment was repeated at 65 C with fresh inoculum (a mixed culture); methane composition and volumetric productivity of 92% and 0.46 L CH4/L reactor were achieved in 24 h. Methanothermobacter species represent likely and resilient candidates for thermophilic biogas upgrading.
0960-8524
//www.sciencedirect.com/science/article/pii/S0960852416315875
10.1016/j.biortech.2016.11.066
Grant Details
Science Foundation Ireland
Centre for Marine and Renewable Energy (MaREI) under Grant No. 12/RC/2302.