. 2021 Jan 15;37(4):1511–1520. doi: 10.1021/acs.langmuir.0c03050

Table 3. Langmuir, Freundlich, and Temkin Isotherm Model Parameters for Adsorption of AMP, ADP, and ATP by the Chitosan–Silica Composite (Concentration of Composite, 1 g·L^–1; pH 3.5).

isotherm model	parameter	AMP	ADP	ATP
Langmuir	q₀, mol·g^–1	0.324	0.290	0.198
	K_L, L·mol^–1	1709	2947	6742
	logK	3.23	3.47	3.83
	R²	0.9998	0.9986	0.9926
Freundlich	K_F, mmol·g^–1	1.70	1.70	1.78
	n	1.014	1.058	1.154
	1/n	0.987	0.945	0.866
	R²	0.9546	0.9546	0.9497
Temkin	b_T, kJ·mol^–1	140.9	139.4	134.7
	K_T, L·g^–1	181.03	371.85	411.70
	R²	0.2780	0.1657	0.1805

Table 3. Langmuir, Freundlich, and Temkin Isotherm Model Parameters for Adsorption of AMP, ADP, and ATP by the Chitosan–Silica Composite (Concentration of Composite, 1 g·L–1; pH 3.5).