Removal of Cadmium and Lead from Aqueous Solution by Hydroxyapatite/Chitosan Hybrid Fibrous Sorbent: Kinetics and Equilibrium Studies

Table 5

Intraparticle diffusion parameters for adsorption of Pb²⁺ and Cd²⁺ on 30/70 HAp/chitosan hybrid fiber.

Metal ions	Initial concentration; (mg/L)	Intraparticle diffusion
		(mg/g/h^1/2)
Pb^2+	10	0.03	1.94	0.426
	100	0.27	19.49	0.249
	1000	31.33	96.39	0.547
Cd^2+	10	0.18	1.67	0.613
	100	3.65	13.20	0.607
	1000	18.22	53.37	0.648