Table 5 Contents of TOC in the mixture, degrees of TOC reduction, methane potentials and yields for the different substrates
Pretreatment | Substrate | TOC (g/l) | TOC reduction (%) | Methane potential (nl CH4/kg VS) | Yield (nl CH4/100 g raw material) |
|---|---|---|---|---|---|
Reference with cellulose | - | - | 390 | - | |
No catalyst | Hydrolysate | 0.22 | 90.6 | 495 | 9.9 |
Thin stillage from SSF with unwashed material | 0.29 | 82.5 | 468 | 9.9 | |
Thin stillage from SSF with washed material | 0.19 | 86.2 | 517 | 3.5 | |
0.2% Sulphuric acid | Hydrolysate | 0.02 | 99.0 | 503 | 11.7 |
Thin stillage from SSF with unwashed material | 0.17 | 92.1 | 658 | 13.8 | |
Thin stillage from SSF with washed material | 0.16 | 91.8 | 516 | 3.8 |