Table 1. Theoretical Parameters of the Studied Kinetic and Isotherm Models in Addition to the Thermodynamic Parameters.

model	parameters	DI	CS/D
pseudo-first-order	K1 (min–1)	0.3557	0.3817
	qe(cal) (mg/g)	365.4	573
	R2	0.98	0.91
	X2	0.65	4.3
pseudo-second-order	k2 (g mg–1 min–1)	3.4 × 10–4	2.5 × 10–4
	qe(cal) (mg/g)	386.5	523
	R2	0.922	0.93
	X2	1.54	2.8
Langmuir	qmax (mg/g)	440.39	765.5
	b (L/mg)	4.09 × 10–4	0.0076
	R2	0.93	0.91
	X2	4.14	4.65
	RL	0.75–0.92	0.141–0.396
Freundlich	1/n	0.5	0.39
	kF (mg/g)	16.4	47.7
	R2	0.87	0.88
	X2	5.63	5.86
D–R model	β (mol2/KJ2)	0.0084	0.0079
	qm (mg/g)	396	574.6
	R2	0.86	0.84
	X2	6.78	6.88
	E (KJ/mol)	7.71	7.95
ΔGo (kJ mol–1)	303.15	–22.51	–24.55
	308.15	–22.84	–24.77
	313.15	–22.98	–25.03
	318.15	–23.10	–25.23
	323.15	–23.28	–25.40
ΔH° (kJ mol–1)		–11.6	–11.46
ΔS° (J K–1 mol–1)		36.27	43.22