Table 2 The mathematical parameters of the evaluated classic isotherm models.

Material	Model	Parameter	Values
Material	Model	Parameter	293 K	303 K	313 K
CA	Langmuir	Q_max (mg/g)	135.89	123.46	109.9
		R²	0.995	0.997	0.99
		X²	0.237	0.122	0.053
		b(L/mg)	1.74 × 10^–8	1.35 × 10^–8	2.05 × 10^–9
	Freundlich	1/n	0.88	0.97	0.91
		k_F (mg/g)	0.51	0.20	0.11
		R²	0.81	0.84	0.82
		X²	9.90	9.0	9.89
	D–R model	β (mol²/kJ²)	0.0918	0.1124	0. 1190
		Q_m (mg/g)	142.8	129.5	118.7
		R²	0.98	0.99	0.99
		X²	0.57	0.49	0.21
		E (kJ/mol)	2.33	2.1	2.04
PANI/CA	Langmuir	Q_{max (mg/g)}	235.8	191.2	154.4
		R²	0.99	0.99	0.98
		X²	0.30	0.31	0.73
		b(L/mg)	1.73 × 10^–5	2.66 × 10^–7	8.46 × 10^–9
	Freundlich	1/n	0.73	0.90	0.97
		k_F (mg/g)	2.15	1.61	1.25
		R²	0.90	0.86	0.84
		X²	4.96	8.19	9.79
	D–R model	β (mol²/kJ²)	0.0658	0.0908	0.0924
		Q_m (mg/g)	210.1	191.2	165.5
		R²	0.96	0.99	0.99
		X²	2.14	0.61	0.19
		E (kJ/mol)	2.75	2. 34	2.32
AC	Langmuir	Q_{max (mg/g)}	156.9	131.0	116.13
		R²	0.99	0.99	0.99
		X²	0.03	0.18	0.21
		b(L/mg)	2.22 × 10^–6	1.56 × 10^–8	2.31 × 10^–9
	Freundlich	1/n	0.71	0.88	0.94
		k_F (mg/g)	1.75	1.49	1.18
		R²	0.86	0.83	0.82
		X²	5.16	8.86	9.18
	D–R model	β (mol²/kJ²)	0.0660	0.0867	0.1042
		Q_m (mg/g)	153.5	139.63	126.3
		R²	0.99	0.99	0.99
		X²	0.41	0.026	0.057
		E (kJ/mol)	2.75	2.40	2.18
PANI/AC	Langmuir	Q_{max (mg/g)}	309.7	263.8	227.2
		R²	0.99	0.99	0.991
		X²	0.53	0.38	0.08
		b(L/mg)	6.24 × 10^–5	5.39 × 10^–6	2.00 × 10^–7
	Freundlich	1/n	0.68	0.78	0.92
		k_F (mg/g)	3.58	1.82	0.66
		R²	0.91	0.89	0.86
		X²	4.66	7.25	8.03
	D–R model	β (mol²/kJ²)	0.0584	0.0748	0.0947
		Q_m (mg/g)	259.56	242.95	227.7
		R²	0.92	0.95	0.98
		X²	4.35	2.70	0.93
		E (kJ/mol)	2.92	2.58	2.29

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