Table 3.

Parameters of nonlinear Langmuir, Freundlich, Redlich–Peterson and Sips isotherm models for the adsorption of MB to the chitosan/pectin (CPB) and chitosan/DNA (CDB) blend hydrogels.

Langmuir Isotherm
Hydrogel	KL (L mg−1)	qmax (mg g−1)	R L	R²	χ2	AIC
CPBB	5.3 × 10−6	116.9	0.999	0.892	0.478	2.73
CDBB	0.480	11.60	0.455	0.822	1.480	6.35
Freundlich Isotherm
	KF (mg(n−1)/n L1/ng−1)	n	b F	R²	χ2	AIC
CPBB	0.343	0.698	1.432	0.940	0.268	0.97
CDBB	3.657	1.912	0.523	0.755	0.956	7.47
Redlich-Peterson Isotherm
	αR-P (mg−1)	KR-P (L g−1)	β R-P	R²	χ2	AIC
CPBB	0.061	0.470	0.969	0.951	0.215	0.30
CDBB	0.022	3.823	0.121	0.885	0.956	4.21
Sips Isotherm
	β S	KS (L mg−1)	qms (mg g−1)	R²	χ2	AIC
CPBB	1.256	0.003	188.6	0.941	0.263	−1.46
CDBB	4.398	1.648	7.264	0.967	0.271	−0.18