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Characteristics of substrates and inocula
| Characteristics | Digestate | Sludge | Food waste | Pig manure |
|---|---|---|---|---|
| pH | 8.94 | 8.18 | 4.98 | 8.60 |
| Total solids (TS, %) | 16.6 | 18.9 | 26.2 | 23.7 |
| Volatile solids (VS, %) | 11.6 | 12.5 | 25.0 | 19.4 |
| Soluble chemical oxygen demand (SCOD, g/L) | 150.0 | 38.5 | 28.4 | 14.5 |
| Volatile fatty acid (VFA, mg/L) | 0 | 1758 | 4657 | 5314 |
