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

Table 2

Parameters of adsorption kinetics model of Cu(II) on CB and bentonite.

Number	Treatment	Pseudo first-order model			Pseudo second-order model
		(mg/g)	(1/min)		(mg/g)	(g/mgL⋅min)
a	CB	12.265	0.061	0.989	12.628	0.016	0.982
b	OCB	20.053	0.055	0.940	20.877	0.007	0.998
c	Bentonite	10.473	0.097	0.893	10.534	0.113	0.999
d	Organic bentonite	11.185	0.112	0.872	11.213	0.244	0.999