The Adsorption of Pb, Zn, Cu, Ni, and Cd by Modified Ligand in a Single Component Aqueous Solution: Equilibrium, Kinetic, Thermodynamic, and Desorption Studies

Table 4

Kinetic parameters for the binding of considered metal ions onto FGCX.

Metal ions	Pseudo-first-order parameters			Pseudo-second-order parameters			Intraparticle diffusion parameters
	(min^−1)	(mmol/g)	(g/mmol·min)	(mmol/g)	(mmol/gmin^1/2)
	Pb	0.03	1.59	0.88	7.34	3.54	0.98	3.43	0.97
Cu	0.01	1.16	0.81	5.28	3.87	0.99	4.18	0.99
Ni	0.02	1.90	0.83	5.12	3.12	1.00	2.97	0.99
Zn	0.03	2.2	0.83	3.21	3.99	0.99	2.56	0.98
Cd	0.05	1.85	0.73	2.56	3.52	0.99	3.78	0.99