| Control | H2-supplemented |
---|---|---|
Biogas compositions (%) | ||
 CH4 | 66.70 ± 0.36 | 94.47 ± 1.21 |
 CO2 | 33.30 ± 0.36 | 3.09 ± 0.64 |
 H2 | – | 2.45 ± 0.83 |
 CH4 production rate (mL L−1 h−1) | 1.03 ± 0.02 | 1.68 ± 0.11 |
 CH4 from H2 consumed (mL L−1 h−1) | – | 0.59±0.09 |
 H2 added to reactor (mL L−1 h−1) | – | 2.37 ± 0.39 |
 H2 consumed (mL L−1 h−1) | – | 2.32 ± 0.38 |
 ɳH2 (%) | – | 98 |
 Total VFA (mg L−1) | 35.4 ± 20.40 | 37.5 ± 10.40 |
 pH | 7.07 ± 0.11 | 7.64 ± 0.15 |