Variation source | Sum of squares | DF | Mean sum of squares | F | p | Contribution (%) | |
pH | 13.3416 | 1 | 13.3416 | 6.1950 | 0.024205 | * | 2.1 |
Fe2+ | 94.6594 | 1 | 94.6594 | 43.9539 | 0.000006 | * | 15.0 |
pH/Fe2+ | 1.7633 | 1 | 1.7633 | 0.8188 | 0.378960 | 0.3 | |
H2O2 | 80.6292 | 1 | 80.6292 | 37.4392 | 0.000015 | * | 12.8 |
pH/H2O2 | 1.7887 | 1 | 1.7887 | 0.8306 | 0.375632 | 0.3 | |
H2O2/Fe2+ | 1.3661 | 1 | 1.3661 | 0.6343 | 0.437435 | 0.2 | |
O3/UV | 0.3172 | 1 | 0.3172 | 0.1473 | 0.706190 | 0.1 | |
O3 | 20.8645 | 1 | 20.8645 | 9.6882 | 0.006701 | * | 3.3 |
pH/O3 | 4.0830 | 1 | 4.0830 | 1.8959 | 0.187498 | 0.6 | |
Stirring | 0.2190 | 1 | 0.2190 | 0.1017 | 0.753909 | 0.0 | |
pH/Stirring | 1.2061 | 1 | 1.2061 | 0.5600 | 0.465111 | 0.2 | |
Temperature | 24.3201 | 1 | 24.3201 | 11.2927 | 0.003979 | * | 3.9 |
pH/Temperature | 16.5279 | 1 | 16.5279 | 7.6745 | 0.013652 | 2.6 | |
pH/UV | 0.0286 | 1 | 0.0286 | 0.0133 | 0.909634 | 0.0 | |
UV | 333.7682 | 1 | 333.7682 | 154.9811 | 0.000000 | * | 53.0 |
Residue | 34.4577 | 16 | 2.1536 | ||||
Total | 629.3408 | 31 | R2 = 94.5 |