Table 3.
Variance analysis for CPF adsorption onto ZnO/BaTiO3
| Source | Sum of squares | df | Mean square | F-value | p-value | |
|---|---|---|---|---|---|---|
| Model | 10171.25 | 9 | 1130.14 | 82.40 | < 0.0001 | significant |
| A-pH | 3143.45 | 1 | 3143.45 | 229.19 | < 0.0001 | |
| B-adsorbent dose | 2678.75 | 1 | 2678.75 | 195.31 | < 0.0001 | |
| C-CPF initial concentration | 2065.00 | 1 | 2065.00 | 150.56 | < 0.0001 | |
| AB | 225.45 | 1 | 225.45 | 16.44 | 0.0048 | |
| AC | 226.65 | 1 | 226.65 | 16.53 | 0.0048 | |
| BC | 32.26 | 1 | 32.26 | 2.35 | 0.1690 | |
| A2 | 10.42 | 1 | 10.42 | 0.7596 | 0.4123 | |
| B2 | 1446.43 | 1 | 1446.43 | 105.46 | < 0.0001 | |
| C2 | 425.74 | 1 | 425.74 | 31.04 | 0.0008 | |
| Residual | 96.01 | 7 | 13.72 | |||
| Lack of Fit | 78.59 | 3 | 26.20 | 6.01 | 0.0579 | not significant |
| Pure Error | 17.42 | 4 | 4.36 | |||
| Cor Total | 10267.26 | 16 | ||||
| Std. Dev. | 3.70 | R2 | 0.9906 | |||
| Mean | 51.08 | Adjusted R2 | 0.9786 | |||
| C.V. % | 7.25 | Predicted R2 | 0.8749 | |||
| Adeq Precision | 36.1144 |