Preparation and Heavy Metal Ions Chelating Properties of Multifunctional Polymer-Grafted Silica Hybrid Materials

Table 5

Starting mixture concentration, residual concentration, and percent adsorption of heavy metal ions after elution on Siγ, Siγ-[BAC-DMEDA], and Siγ-[BAC-EDDA].

Heavy metal ions	Initial conc. (mg/l)	Siγ		Si-[BAC-DMEDA]		Si-[BAC-EDDA]
		Residual conc. (mg/l)	Adsorption (%)	Residual conc. (mg/l)	Adsorption (%)	Residual conc. (mg/l)	Adsorption (%)
[Cu^2+]	0.38	0.12	68.4	0.03	92.1	0.02	94.8
[Co^2+]	0.41	0.41	0	0.25	39.0	0.01	97.6
[Zn^2+]	0.91	0.05	94.5	0.17	81.3	0.03	96.7
[Ni^2+]	0.39	0.38	2.6	0.11	71.8	0.01	97.4