Table 3.
The results of ANOVA for percentage of BFO NMPs removal
| Source | Sum of Squares | df | Mean Square | F-value | p value | |
|---|---|---|---|---|---|---|
| Model | 10,314.33 | 14 | 736.74 | 40.88 | < 0.0001 | significant |
| Time | 640.67 | 1 | 640.67 | 35.55 | < 0.0001 | significant |
| pH | 7350.00 | 1 | 7350.00 | 407.83 | < 0.0001 | significant |
| BPA concentration | 450.67 | 1 | 450.67 | 25.01 | 0.0002 | significant |
| Catalyst Dosage | 450.67 | 1 | 450.67 | 25.01 | 0.0002 | significant |
| Time*pH | 36.00 | 1 | 36.00 | 2.00 | 0.1780 | not significant |
| Time*BPA concentration | 4.00 | 1 | 4.00 | 0.2219 | 0.6443 | not significant |
| Time*Catalyst Dosage | 2.25 | 1 | 2.25 | 0.1248 | 0.7288 | not significant |
| pH*BPA concentration | 576.00 | 1 | 576.00 | 31.96 | < 0.0001 | significant |
| pH*Catalyst Dosage | 110.25 | 1 | 110.25 | 6.12 | 0.0258 | significant |
| BPA concentration*Catalyst Dosage | 6.25 | 1 | 6.25 | 0.3468 | 0.5647 | not significant |
| Time 2 | 356.30 | 1 | 356.30 | 19.77 | 0.0005 | significant |
| pH 2 | 3.44 | 1 | 3.44 | 0.1909 | 0.6684 | not significant |
| Catalyst Dosage 2 | 356.30 | 1 | 356.30 | 19.77 | 0.0005 | significant |
| BPA concentration 2 | 136.30 | 1 | 136.30 | 7.56 | 0.0149 | significant |
| Residual | 270.33 | 15 | 18.02 | |||
| Lack of Fit | 192.83 | 10 | 19.28 | 1.24 | 0.4281 | not significant |
| Pure Error | 77.50 | 5 | 15.50 | |||
| Cor Total | 10,584.67 | 29 | ||||
| User Std. Dev. | 4.245 | R2 | 0.974 | |||
| Std. Dev. | 4.24 | Adjusted R2 | 0.95 | |||
| Mean | 43.33 | Predicted R2 | 0.88 | |||
| C.V. % | 9.79 | Adeq Precision | 26.011 |