Table 4.
SMA data for seed sludge and temporal biomass from R4 and R5.
| Bioreactor | Test temp (°C) | SO4 +/− | Test day | Acetate | H2/CO2 | Propionate |
|---|---|---|---|---|---|---|
| Inoculum | 15 | − | 0 | 21.5 (0.9) | 73.3 (18.9) | 11.4 (0.5) |
| Inoculum | 37 | − | 0 | 72.9 (4.9) | 118.6 (7.6) | 96.8 (3) |
| R4 | 15 | − | 449 | 31 (0) | 147.5 (3.2) | 91.9 (3.2) |
| R4 | 15 | + | 449 | 24.4 (0.2) | 63.4 (1.2) | 51.7 (2.9) |
| R4 | 37 | − | 449 | 346.9 (5.8) | 523.3 (24.2) | 334.3 (2.6) |
| R4 | 37 | + | 449 | 281.4 (14.5) | 531.8 (0.6) | 104.5 (2.9) |
| R5 | 15 | − | 449 | 95.5 (2.6) | 30.5 (0.03) | 4.5 (2.2) |
| R5 | 15 | + | 449 | 60 (8.5) | 28.6 (3.6) | 8.6 (3) |
| R5 | 37 | − | 449 | 266.1 (24) | 279.7 (25) | 26.7 (2.5) |
| R5 | 37 | + | 449 | 323.7 (11.3) | 405.3 (2.7) | 6.3 (0.2) |
| R4 | 15 | − | 605 | 73.2 (2.4) | 180.4 (33.5) | 87.7 (1.7) |
| R4 | 15 | + | 605 | 41.6 (3.5) | 63.1 (1.5) | 91.5 (10.7) |
| R5 | 15 | − | 605 | 186.4 (64.2) | 35.4 (5.1) | 3.8 (0.1) |
| R5 | 15 | + | 605 | 58.1 (2.3) | 57.6 (9.7) | 2.5 (0.1) |
| R4 | 15 | − | 742 | 69.5 (4.3) | 131.7 (3.1) | 76.9 (6.7) |
| R4 | 15 | + | 742 | 34.8 (0.3) | 57.5 (0.3) | 19.2 (1) |
| R4 | 37 | − | 742 | 107 (3.5) | 201.5 (13.5) | 154.6 (34.7) |
| R4 | 37 | + | 742 | 57.7 (2.5) | 154.1 (2.3) | 89.1 (4.7) |
| R5 | 15 | 742 | 42.5 (3) | 67.4 (2.2) | 1.6 (0.1) | |
| R5 | 15 | + | 742 | 37.4 (0.8) | 48.6 (0.5) | 17.9 (1.9) |
| R5 | 37 | − | 742 | 461.2 (16.5) | 184.2 (5.6) | 2.8 (1.6) |
| R5 | 37 | + | 742 | 234.1 (7.5) | 112.8 (1.9) | 9.7 (1.1) |
Values are expressed in ml CH4 g−1 VSS−1 day− and are the mean of triplicates. Standard errors (standard deviation/vn, where n = 3) are in parentheses.