Table 4.
Analysis of variance (ANOVA) results regarding MB removal (%) for ZnO NPs.
| Source | Sum of Squares | df | Mean Square |
F Value |
p-Value Prob > F |
Remarks |
|---|---|---|---|---|---|---|
| Model | 2560.20 | 9 | 284.47 | 35.32 | <0.0001 | Significant |
| A-ZnCl2 | 1322.18 | 1 | 1322.18 | 164.15 | <0.0001 | Significant |
| B-NaOH | 9.55 | 1 | 9.55 | 1.19 | 0.3017 | Not significant |
| C-Sonication Time | 680.84 | 1 | 680.84 | 84.53 | <0.0001 | Significant |
| AB | 200.00 | 1 | 200.00 | 24.83 | 0.0006 | Significant |
| AC | 32.00 | 1 | 32.00 | 3.97 | 0.0742 | Not significant |
| BC | 98.00 | 1 | 98.00 | 12.17 | 0.0058 | Significant |
| A2 | 36.34 | 1 | 36.34 | 4.51 | 0.0596 | Not significant |
| B2 | 10.26 | 1 | 10.26 | 1.27 | 0.2855 | Not significant |
| C2 | 191.87 | 1 | 191.87 | 23.82 | 0.0006 | Significant |
| Residual | 80.55 | 10 | 8.05 | - | - | - |
| Lack of Fit | 54.47 | 5 | 10.89 | 2.09 | 0.2191 | Not significant |
| Pure Error | 26.08 | 5 | 5.22 | - | - | - |
| Cor Total | 2640.75 | 19 | - | - | - |
R-squared: 0.9695, adjusted R-squared: 0.9420, CV%: 3.53.