Table 2. Effects of temperature on pH value in anaerobic co-digestion with a C/N ratio of 25.
| Temperature (°C) | DM+RS | CM+RS | DM+CM+RS | |||
| a Average | Final | Average | Final | Average | Final | |
| 20 | 6.12±0.13 | 6.64±0.14 | 5.42±0.11 | 5.01±0.07 | 5.92±0.10 | 6.58±0.11 |
| 30 | 6.89±0.15 | 7.12±0.16 | 6.42±0.03 | 6.92±0.02 | 7.11±0.11 | 7.35±0.14 |
| 40 | 7.21±0.09 | 7.44±0.13 | 7.19±0.08 | 7.38±0.12 | 7.48±0.13 | 7.67±0.11 |
| 50 | 7.58±0.11 | 7.61±0.13 | 7.66±0.12 | 7.79±0.07 | 7.56±0.12 | 7.74±0.03 |
| 60 | 7.69±0.15 | 7.88±0.15 | 7.82±0.10 | 8.11±0.11 | 7.72±0.16 | 7.92±0.13 |
| bLSD0.05 = 0.47 cLSD0.05 = 0.61 | ||||||
a
±shows the standard error
b
LSD value at the 5% level based on all average values from three mixture sets at all operation temperatures
c
LSD value at the 5% level based on all final values from three mixture sets at all operation temperatures