Table 5.
Box–Behnken design with independent variables and measured response.
| Source | Sum of Squares | df | Mean Square | F Value | p-Value Prob > F | |
|---|---|---|---|---|---|---|
| Model | 2022.273 | 14 | 144.4481 | 229.5803 | <0.0001 | significant |
| A-Water content | 1.872498 | 1 | 1.872498 | 2.976078 | 0.1065 | |
| B-Time | 80.8396 | 1 | 80.8396 | 128.4834 | <0.0001 | |
| C-Pressure | 75.90223 | 1 | 75.90223 | 120.6362 | <0.0001 | |
| D-Liquid-solid ratio | 37.33898 | 1 | 37.33898 | 59.34518 | < 0.0001 | |
| AB | 4.378975 | 1 | 4.378975 | 6.959778 | 0.0195 | |
| AC | 17.9536 | 1 | 17.9536 | 28.53477 | 0.0001 | |
| AD | 4.840466 | 1 | 4.840466 | 7.693255 | 0.0149 | |
| BC | 11.18712 | 1 | 11.18712 | 17.78039 | 0.0009 | |
| BD | 109.843 | 1 | 109.843 | 174.5803 | <0.0001 | |
| CD | 41.42853 | 1 | 41.42853 | 65.84495 | <0.0001 | |
| A2 | 439.4122 | 1 | 439.4122 | 698.3853 | <0.0001 | |
| B2 | 716.8069 | 1 | 716.8069 | 1139.266 | <0.0001 | |
| C2 | 516.0715 | 1 | 516.0715 | 820.2247 | <0.0001 | |
| D2 | 853.7272 | 1 | 853.7272 | 1356.882 | <0.0001 | |
| Residual | 8.808564 | 14 | 0.629183 | |||
| Lack of Fit | 7.89223 | 10 | 0.789223 | 3.445136 | 0.1223 | not significant |
| Pure Error | 0.916333 | 4 | 0.229083 | |||
| Cor Total | 2031.081 | 28 | ||||
| R-Squared | 0.995663 | |||||
| Adj R-Squared | 0.991326 | |||||
| Pred R-Squared | 0.976913 | |||||