Table 4.

ANOVA of the response for photocatalytic oxidation of CBZ

Terms	Degrees of Freedom	Sum of Squares	Mean Square	F Value	p Value
Model	9	2652.21	294.69	46.91	0.00000053
pH, X1	1	85.80	85.80	13.66	0.00413790
Catalyst Loading, X2	1	519.33	519.33	82.67	0.00000377
Initial CBZ concentration, X3	1	1661.52	1661.52	264.50	0.00000002
X1*X1	1	2.67	2.67	0.42	0.52927557
X2*X2	1	2.26	2.26	0.36	0.56209383
X3*X3	1	4.59	4.59	0.73	0.41251102
X1*X2	1	2.26	2.26	0.36	0.56216319
X1*X3	1	31.40	31.40	5.00	0.04935007
X2*X3	1	223.98	223.98	35.66	0.00013729
Error	10	62.82	6.28
Lack-of-Fit	5	52.34	10.47	4.99	0.05108539
Pure Error	5	10.48	2.10
Total	19	2715.02
R2		0.9769