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Table 1 Origin and balance of CH4 formation in the fed-batch reactors supplied with α-cellulose at the start of the experiment and with various amounts of daily H2

From: Conversion of H2 and CO2 to CH4 and acetate in fed-batch biogas reactors by mixed biogas community: a novel route for the power-to-gas concept

Total CH4 production (mmol) CH4 from α-cellulose (mmol) Theoretical from α-cellulose (mmol) Total injected H2 (mmol) Theoretical CH4 from H2 (mmol) Measured CH4 from H2 (mmol) Difference
6.20 ± 0.54 4.58 ± 0.09 4.71 0.00 ± 0 0.00 0.00 ± 0.66 0.00
12.35 ± 0.44 4.63 ± 0.09 4.71 24.42 ± 0.41 6.10 6.10 ± 0.24 0.00
11.30 ± 0.50 4.61 ± 0.09 4.71 43.00 ± 1.02 10.75 5.08 ± 0.48 −5.67
10.33 ± 0.81 4.61 ± 0.09 4.71 55.69 ± 2.76 13.92 4.11 ± 0.75 −9.82
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