Table 2.
Fitted rate constants and activation energies for primary hydrothermal solubilisation reactions of wheat straw
|
Temperature (°C) |
Total solubilisation |
Hemicellulose solubilisation |
Lignin solubilisation |
|||
|---|---|---|---|---|---|---|
| k s (min −1 ) | R 2 | k h (min −1 ) | R 2 | k l (min −1 ) | R 2 | |
| 180 |
0.040 (0.012) |
0.987 |
0.040 (0.01) |
0.988 |
0.074 (0.029) |
0.974 |
| 200 |
0.221 (0.033) |
0.994 |
0.219 (0.034) |
0.990 |
0.31 (0.055) |
0.950 |
| 220 |
0.982 (0.099) |
0.999 |
0.993 (0.105) |
0.999 |
1.12 (0.295) |
0.990 |
| Arrhenius analysis |
|
|
|
|
|
|
| Es (kJmol−1) | 148 (21, 1.65) | 0.999 | 149 (16, 1.23) | 0.998 | 126 (12, 0.90) | 0.999 |
First or single number in brackets, ±95% confidence limits of parameter estimation; second number in brackets, ± standard error of parameter estimation.