Biosorption of Pb(II) Ions by Klebsiella sp. 3S1 Isolated from a Wastewater Treatment Plant: Kinetics and Mechanisms Studies

Table 7

ANOVA for the response surface reduced quadratic model.

Source	Sum of squares	DF	Mean square	-value	value
Model	9588.53	8	1198.57	437.66	<0.0001
: biosorbent dosage	4.10	1	4.10	1.50	0.2520
pH	234.13	1	234.13	85.49	<0.0001
: temperature	8164.13	1	8164.13	2981.14	<0.0001
pH	18.39	1	18.39	6.72	0.0291
	301.72	1	301.72	110.17	<0.0001
	161.57	1	161.57	59.00	<0.0001
pH^2	164.17	1	164.17	59.95	<0.0001
	387.29	1	387.29	141.42	<0.0001
Residual	24.65	9	2.74
Lack of fit	16.26	4	4.06	2.42	0.1790
Pure error	8.39	5	1.68
Cor total	9613.18	17
CV %	1.58
-Squared	0.9974
Adj. -Squared	0.9952
Pred. -Squared	0.9837