. 2022 Aug 25;15(17):5856. doi: 10.3390/ma15175856

Table 5.

Adsorption parameters obtained for modelling of heavy metal ions isotherms on the examined solids surface; pH 5.

Adsorbed Ions	Adsorption Parameters of Langmuir Model
	qm [mg/g]			KL [dm³/mg]			R²
	PAC	SAC	HAC	PAC	SAC	HAC	PAC	SAC	HAC
Pb(II)	235.77	231.25	174.65	0.01996	0.00123	0.00123	0.991	0.970	0.997
Cu(II)	198.83	183.91	160.94	0.00033	0.00114	0.00115	0.994	0.965	0.993
Adsorbed Ions	Adsorption Parameters of Freundlich Model
	n			K_F [mg/g·(mg/dm³)^1/n]			R²
	PAC	SAC	HAC	PAC	SAC	HAC	PAC	SAC	HAC
Pb(II)	0.678	0.669	0.606	0.00309	0.00713	0.00529	0.904	0.836	0.821
Cu(II)	0.553	0.617	0.518	0.00177	0.00221	0.00275	0.643	0.829	0.880