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

Table 4

Initial heavy metal concentration and ion removal after elution on Siγ, Siγ-[BAC-DMEDA], and Siγ-[BAC-EDDA].

Solvent	Initial [Cu^2+] (mg/l)	(%) Cu^2+ removal
		Siγ	Siγ-[BAC-DMEDA]	Siγ-[BAC-EDDA]
Distilled water	13.2	7.6	13.1	82.9
0.1 M CaCl2	0.8	14.7	>98.7	>98.7
0.1 M MgSO4	13.8	26.2	89.9	98.7
0.1 M Na2SO4	13.4	15.3	90.4	99.6
Drinking water	3.4	20.9	98.8	95.9
Solvent	Initial [Ni^2+] (mg/l)	(%) Ni^2+ removal
		Siγ	Siγ-[BAC-DMEDA]	Siγ-[BAC-EDDA]
Distilled water	15.3	3.6	4.0	88.11
0.1 M CaCl2	14.4	4.9	38.7	90.9
0.1 M MgSO4	15.8	9.7	50.8	96.8
0.1 M Na2SO4	11.8	3.5	50.6	95.6
Drinking water	14.8	8.2	32.1	99.9
Solvent	Initial [Zn^2+] (mg/l)	(%) Zn^2+ removal
		Siγ	Siγ-[BAC-DMEDA]	Siγ-[BAC-EDDA]
Distilled water	9.0	13.3	11.2	80.7
0.1 M CaCl2	9.4	2.0	3.0	83.5
0.1 M MgSO4	9.2	5.4	5.4	93.3
0.1 M Na2SO4	9.2	7.3	6.7	94.0
Drinking water	8.5	12.2	10.6	99.8