Table 2.

Adsorption isotherm parameters for the adsorption of NIPAM onto bentonite.

Isotherm	Parameters	T/°C
		30	70	90
Langmuir	qm (mg/g)	3.673	2.679	1.914
	b (L/mg)	0.119	0.053	0.040
	R2	0.6949	0.7218	0.6143
Freundlich	n (g/L)	0.620	0.537	0.596
	KF (L/mg)	0.0113	0.0027	0.0034
	R2	0.4804	0.7910	0.9741
Temkin	B	1.710	0.496	0.421
	A (L/mg)	0.238	0.799	0.386
	R2	0.9764	0.6900	0.6391
D–R	qm (mg/g)	3.850	2.831	2.787
	B1 (mol2 kJ−2)	0.00161	0.00170	0.00177
	E	17.62	17.13	16.82
	R2	0.9988	0.9977	0.9929