. 2020 Jun 17;10:9788. doi: 10.1038/s41598-020-66540-6

Table 4.

Isotherm parameter values after non-linear fitting (pH = 4.0, V = 20 mL, W = 5.0 mg, C_i = 5-200 mg L⁻¹, time = 90 min, T = 293-323 K, stirring rate = 190 rpm).

Model	Parameter	T (K)
Model	Parameter	293	303	313	323
Langmuir	$Q_{m, \exp}$ (mg g⁻¹)	270.14	282.89	291.51	302.02
	$Q_{m, cal}$ (mg⁻¹)	257.67	267.99	275.55	281.18
	K_L (L mg⁻¹)	1.412	1.572	1.751	1.853
	R²	0.9784	0.9694	0.9780	0.9740
Freundlich	K_F ((mg g⁻¹)(L mg⁻¹)^1/n)	116.16	116.48	117.92	124.27
	n (−)	5.37	5.08	4.97	5.11
	R²	0.8588	0.8430	0.8665	0.8632
R-P	K_R−P(L g⁻¹)	401.36	407.92	434.07	579.82
	α_R−P (mg L⁻¹) ^−g	1.691	1.651	1.794	2.397
	g (−)	0.9802	0.9803	0.9678	0.9625
	R²	0.9752	0.9646	0.9771	0.9734