Adsorption of Heavy Metals on Bentonitic Soil for Use in Landfill Liners

Table 4

Preparation of feed solutions by adding 1 g analytical-grade reagents to distilled water and dilution.

Metal	Salt	Element concentration (mg/L)
		Stock solution	Dilution
			1	2	4	8	16
Cd	CdCl2.H2O	558	558	280	140	70	35
Cr	CrCl3.6H2O	195	195	98	49	24	12
Cu	CuCl2.2H2O	373	373	186	83	47	23
Ni	Ni(NO3)2.2H2O	202	202	101	50	25	39
Pb	Pb(NO3)2	626	626	313	156	78	39
Zn	Zn(NO3)2.6H2O	220	220	110	55	28	14