Table 3.

Adsorption isotherms and kinetic models constants and the corresponding error functions.

Isotherm model	Parameters	Value	Kinetic model	Parameters	Value
Langmuir	KL (L mg−1)	0.331 ± 0.139	Pseudo-first order	k1 (min−1)	0.066 ± 0.001
	qmax (mg g−1)	1.508 ± 0.196		qe,calc (mg g−1)	0.419 ± 0.002
	R2	0.9715		R2	0.9996
	χ2	2.62 × 10−1		χ2	1.17 × 10−4
	SSE	4.52 × 10−2		SSE	3.73 × 10−5
	ARE (%)	43.95		ARE (%)	17.30
Freundlich	Kf (mg g−1)	0.458 ± 0.017	Pseudo-second order	k2 (g mg−1 min−1)	0.122 ± 0.018
	1/n	0.372 ± 0.115		qe,calc (mg g−1)	0.535 ± 0.017
	R2	0.9968		R2	0.9971
	χ2	0.75 × 10−2		χ2	1.15 × 10−3
	SSE	0.2 × 10−2		SSE	3.46 × 10−4
	ARE (%)	4.25		ARE (%)	18.67
Sips	Qsat	3.921 ± 1.081		qe,exp (mg g−1)	0.407 ± 0.021
	KF	0.131 ± 0.041
	1/n	2.109 ± 0.037
	R2	0.9993
	χ2	0.11 × 10−2
	SSE	0.57 × 10−3
	ARE (%)	2.39