Assessment of Novel Synthetized Nanozirconium Tungstovanadate as Cation Exchanger for Lead Ion Decontamination

Table 5

Solubility of Zr(IV) tungstovanadate in various solvents (0.5 g of the material was initially taken for the treatment).

Solution	Wt. after treatment (g)	IEC for Na^+ (meq/g)
Acids
0.1 M HCl	0.5	2.5
0.5 M HCl	0.5	2.5
2 M HCl	0.5	2.5
5 M HCl	0.48	2.1
HNO3	0.2	1.5
H2SO4	0.32	1.9
Organic solvents
Benzene	0.5	2.5
Heptane	0.5	2.5
Acetone	0.5	2.5
Isopropanol	0.5	2.5
Diethyl ether	0.5	2.5
Bases
1 M KOH	0.45	1.92
1 M NaOH	0.4	1.8