A Comparison Study of Mechanism: Cu²⁺ Adsorption on Different Adsorbents and Their Surface-Modified Adsorbents

Table 3

Parameters for adsorption isotherm of Cu(II) on CB and bentonite.

Number	Treatment	Langmuir			Freundlich
		(mg/g)	(L/mg)		(mg/g) (L/mg)
a	CB	16.507	0.021	0.995	1.229	0.507	0.995
b	OCB	23.419	0.091	0.963	4.427	0.379	0.992
c	Bentonite	7.059	0.578	0.972	3.686	0.468	0.924
d	Organic bentonite	11.168	0.098	0.976	1.209	0.645	0.799