Table 3 Specific methane activity (SMA) of the EGSBs fed with BSG hydrolysates or PM hydrolysates during different periods
From: An integrated approach for efficient biomethane production from solid bio-wastes in a compact system
Date | SMA a (gCOD CH4   · gVSS −1  · day −1 ) | Biomass-based OLR (gCOD hydrolysates   · gVSS −1  · day −1 ) | Biomass-based OLR (g biodegradable COD hydrolysates   · gVSS −1  · day −1 ) | Overloading rate |
|---|---|---|---|---|
One-stage BSG-EGSB | ||||
Inoculum | 0.73 ± 0.08 | N.A.b | N.A. | N.A. |
Day 79 | 0.49 ± 0.01 | 0.67 | 0.48 | Not overloading |
Two-stage BSG-EGSB | ||||
Inoculum | 0.73 ± 0.08 | N.A. | N.A. | N.A. |
Day 8 | 0.44 ± 0.01 | 0.20 | 0.14 | Not overloading |
Day 122 | 0.39 ± 0.02 | 0.63 | 0.45 | 15% |
PM-EGSB | ||||
Inoculum | 0.73 ± 0.08 | N.A. | N.A. | N.A. |
Day 8 | 0.20 ± 0.06 | 0.47 | 0.43 | 115% |
Day 105 | 0.22 ± 0.01 | 0.33 | 0.30 | 36% |
Day 140 | 0.27 ± 0.03 | 0.42 | 0.39 | 44% |
Day 263 | 0.32 ± 0.02 | 0.76 | 0.70 | 119% |