Adsorption of Cr(VI) in Aqueous Solution Using a Surfactant-Modified Bentonite

Table 3

Results of regression analysis (ANOVA).

Source	Sum of square	DF	Mean square	F value	value
Model	1337.65	5	267.52	80.60	<0.0001
A	119.38	1	119.38	35.97	<0.0001
B	592.70	1	592.70	178.57	<0.0001
AB	1.75	1	1.75	0.53	0.4755
AA	64.95	1	64.95	19.57	0.0002
BB	558.82	1	558.82	168.36	<0.0001