Table 3.

ANOVA table for the response surface quadratic model of biosorption of reactive red dye.

	P value
A	<0.0001
B	<0.0001
C	<0.0001
D	0.0053
AB	0.0093
AC	0.0243
AD	0.0954
BC	0.0039
BD	0.0295
CD	0.0748
Lack of fit	0.0038
R-squared	0.976