Effect of Osmotic Pressure on Migration Behavior of nZnO in GCLs

Table 2

Basic properties of bentonite.

Mineral composition (%)	Montmorillonite	67
	Kaolinite	14
	Illite	12
	Orthoclase	4
	Quartz	2
Chemical composition (%)	SiO2	57.2
	Al2O3	16.5
	CaO	3.4
	TiO2	0.8
	Fe2O3	5.7
	Na2O	3.3
	K2O	0.7
	MgO	3.7
Ion exchange capacity (mmol/g)	Na^+	0.445
	K^+	0.010
	Ca^2+	0.159
	Mg^2+	0.017
Initial water content (%)		17.0
Initial thickness (mm)		6.65
pH		9.89∼10.67