Table 3 Analysis of variance (ANOVA) results for the fitted polynomial model for COD removal using photocatalytic process with lamp 8-W
Lamp 8 | Sum of squares | df | Mean square | F value | p-value |
|---|---|---|---|---|---|
Cipro concentration | 607.65 | 1 | 607.65 | 5.32 | 0.05 |
CuO dosage | 2066.08 | 1 | 2066.08 | 18.09 | 0.00 |
pH | 623.99 | 1 | 623.99 | 5.46 | 0.04 |
pH2 | 1453.75 | 1 | 1453.75 | 12.73 | 0.01 |
Residual | 1027.80 | 9 | 114.20 | ||
Lack of fit | 906.60 | 5 | 181.32 | 5.98 | 0.06 |
Pure error | 121.20 | 4 | 30.30 |