Adsorption of Arsenate from Aqueous Solution onto Modified Vietnamese Bentonite

Table 5

The parameters of isotherm models in linear form for the adsorption of As(V) onto modified bentonite.

T (K)	Langmuir model				Freundlich model
	qmax (mg/g)	KL (L/mg)	R^2	RL	KF (mg/g)	n	R^2
Fe-B
283	17.76	1.08	0.976	0.016–0.053	8.81	4.86	0.561
293	18.05	5.18	0.972	0.003–0.011	9.99	5.36	0.391
303	18.98	7.87	0.976	0.002–0.007	10.69	5.44	0.405
Al-B
283	29.41	0.32	0.984	0.046–0.111	21.477	7.41	0.795
293	32.59	0.41	0.970	0.037–0.090	16.912	6.10	0.779
303	35.71	0.70	0.984	0.022–0.055	14.069	5.29	0.875