Table 3 Characterization of digestate from different mixtures of SPV and animal manure in various anaerobic conditions
Samples | Final pH | Final TAN (mg/g) | Final FA (mg/kg) | Final VFAs (g/kg) | Final TA (mg CaCO3/g) | VFAs/TA |
|---|---|---|---|---|---|---|
W-AD | ||||||
CK | 7.8 ± 0.0 | 1.1 ± 0.1 | 37.2 ± 1.9 | 0.1 ± 0.0 | 3.4 ± 0.4 | 0.0 ± 0.0 |
SPV | 7.9 ± 0.0 | 1.7 ± 0.1 | 67.6 ± 2.7 | 0.5 ± 0.0 | 8.7 ± 0.4 | 0.1 ± 0.0 |
DM | 7.8 ± 0.0 | 1.3 ± 0.2 | 41.4 ± 7.5 | 1.2 ± 0.0 | 7.4 ± 0.1 | 0.2 ± 0.0 |
SPV+DM | 7.8 ± 0.0 | 1.4 ± 0.1 | 52.2 ± 4.2 | 0.1 ± 0.0 | 7.9 ± 0.4 | 0.0 ± 0.0 |
PM | 7.6 ± 0.0 | 1.8 ± 0.7 | 44.2 ± 16.1 | 0.3 ± 0.0 | 10.7 ± 0.1 | 0.0 ± 0.0 |
SPV+PM | 7.6 ± 0.0 | 1.8 ± 0.0 | 39.3 ± 0.2 | 0.3 ± 0.0 | 9.0 ± 0.4 | 0.0 ± 0.0 |
CM | 7.8 ± 0.0 | 3.0 ± 0.0 | 113.7 ± 0.8 | 0.5 ± 0.1 | 13.0 ± 0.1 | 0.0 ± 0.0 |
SPV+CM | 7.7 ± 0.0 | 2.3 ± 0.1 | 68.7 ± 2.7 | 1.4 ± 0.1 | 11.1 ± 0.1 | 0.1 ± 0.0 |
SD-AD | ||||||
CK | 7.4 ± 0.0 | 0.7 ± 0.2 | 9.3 ± 2.2 | 0.1 ± 0.0 | 4.0 ± 0.1 | 0.0 ± 0.0 |
SPV | 7.7 ± 0.0 | 1.6 ± 0.0 | 42.0 ± 0.7 | 0.8 ± 0.1 | 10.6 ± 0.1 | 0.1 ± 0.0 |
DM | 7.3 ± 0.0 | 1.3 ± 0.2 | 14.7 ± 1.9 | 0.8 ± 0.1 | 10.0 ± 0.1 | 0.1 ± 0.0 |
SPV+DM | 7.5 ± 0.0 | 1.6 ± 0.1 | 26.0 ± 0.9 | 2.6 ± 0.2 | 11.2 ± 0.1 | 0.2 ± 0.0 |
PM | 7.6 ± 0.1 | 2.9 ± 0.0 | 57.7 ± 0.7 | 0.7 ± 0.1 | 16.6 ± 0.1 | 0.0 ± 0.0 |
SPV+PM | 7.8 ± 0.0 | 2.3 ± 0.5 | 73.3 ± 17.4 | 0.4 ± 0.0 | 15.1 ± 0.1 | 0.0 ± 0.0 |
CM | 8.1 ± 0.0 | 4.5 ± 0.0 | 306.1 ± 0.6 | 0.2 ± 0.0 | 22.7 ± 0.1 | 0.0 ± 0.0 |
SPV+CM | 8.0 ± 0.0 | 3.4 ± 0.0 | 171.3 ± 2.1 | 1.3 ± 0.1 | 16.9 ± 0.1 | 0.1 ± 0.0 |
D-AD | ||||||
CK | 7.7 ± 0.1 | 1.4 ± 0.1 | 38.3 ± 2.1 | 0.2 ± 0.0 | 6.7 ± 0.1 | 0.0 ± 0.0 |
SPV | 7.9 ± 0.0 | 3.2 ± 0.1 | 139.7 ± 2.7 | 4.3 ± 0.2 | 17.9 ± 0.3 | 0.3 ± 0.0 |
DM | 7.4 ± 0.0 | 2.5 ± 0.0 | 37.3 ± 0.2 | 3.8 ± 0.1 | 15.9 ± 0.0 | 0.2 ± 0.0 |
SPV+DM | 7.8 ± 0.1 | 2.4 ± 0.6 | 77.3 ± 20.3 | 2.3 ± 0.1 | 17.1 ± 0.3 | 0.1 ± 0.0 |
PM | 8.2 ± 0.1 | 4.9 ± 0.1 | 420.8 ± 11.0 | 0.8 ± 0.1 | 26.7 ± 0.1 | 0.0 ± 0.0 |
SPV+PM | 7.9 ± 0.1 | 4.0 ± 0.4 | 187.9 ± 18.3 | 0.5 ± 0.0 | 23.5 ± 1.0 | 0.0 ± 0.0 |
CM | 8.1 ± 0.1 | 6.7 ± 0.5 | 444.1 ± 32.9 | 0.5 ± 0.0 | 30.3 ± 0.2 | 0.0 ± 0.0 |
SPV+CM | 8.2 ± 0.1 | 4.9 ± 0.1 | 382.3 ± 11.0 | 1.8 ± 0.2 | 24.6 ± 0.3 | 0.1 ± 0.0 |