Table 2.

Characteristic parameters of the kinetic models.

Kinetic Model	Adsorbent
	CS-NAC Beads	CS-NAC-APTES Beads
Pseudo-First-Order Model
C0 (mg/L)	200	200
qexp (mg/g)	165.78	210.19
qcal (mg/g)	192.09	239.5
$\mathrm{k}$(1/min)	0.307	0.344
$R^2$	0.977	0.973
${\mathrm{X}}^2$	65.44	123.3
Pseudo-Second-Order Model
C0 (mg/L)	200	200
qexp (mg/g)	165.78	210.19
qcal (mg/g)	162.5	204.5
${\mathrm{v}}_0$(mg/mg/h)	66.89	94.78
$R^2$	0.988	0.988
${\mathrm{X}}^2$	35.9	51.175