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

Table 4.

Kinetic parameters obtained for modelling of heavy metal ions adsorption on the examined solids surface; C₀ = 200 mg/dm³ ppm, pH 5.

Adsorbed Ions	Kinetic Parameters of Pseudo-First Order Model
	q_e [mg/g]			k₁ [1/Min]			R²
	PAC	SAC	HAC	PAC	SAC	HAC	PAC	SAC	HAC
Pb(II)	96.60	44.60	5.58	0.1199	0.1068	0.0308	0.7136	0.707	0.1664
Cu(II)	156.05	76.24	46.17	0.1128	0.1202	0.1107	0.7300	0.7292	0.7067
Adsorbed Ions	Kinetic Parameters of Pseudo-Second Order Model
	q_e [mg/g]			k₂ [g/(mg∙min)]			R²
	PAC	SAC	HAC	PAC	SAC	HAC	PAC	SAC	HAC
Pb(II)	166.66	105.26	100.00	0.00045	0.00053	0.00014	0.9877	0.9847	0.9807
Cu(II)	181.81	144.92	111.11	0.00235	0.00035	0.00058	0.9999	0.9857	0.9883