Table 3.
Effluent characteristics and performance indicators of the full- and the laboratory-scale bioreactors.
 |
Full-scale | Laboratory-scale | |
|---|---|---|---|
| 1-D | 3-D | ||
| pH | 6.9 ± 1.3a | 7.2 ± 0.2 | 7.3 ± 0.2 |
| TVFA (mg as acetate/L) | 282 ± 117 | 12.2 ± 13.4 | 30 ± 58 |
| Ethanol (mg/L) | Not determined | 3.1 ± 2.7 | 0.0 ± 0.0 |
| COD removal (%) | 70.7 ± 11.7 | 91.1 ± 5.1 | 88.1 ± 4.8 |
| sCOD removal (%) | 80.1 ± 12.6 | 93.7 ± 2.3 | 92.0 ± 4.9 |
| pCOD removal (%) | 49.8 ± 13.0 | 77.9 ± 28.3 | 69.3 ± 26.0 |
| BPR (L/L d) | -b | 2.95 ± 0.91 | 3.01 ± 0.61 |
| CH4 ratio (%) | – | 74.5 ± 3.5 | 72.8 ± 6.4 |
a
Mean ± standard deviation.
b
Biogas production in the full-scale bioreactor was monitored only collectively with two other bioreactors in parallel.