Sorption of Ammonium Ions onto Natural and Modified Egyptian Kaolinites: Kinetic and Equilibrium Studies

Table 2

Chemical analysis of kaolinite clay as given in literature [18].

Oxide	Content (wt%)
	Evaluated	Theoretical
SiO2	51.51	46.3
Al2O3	31.43	39.8
Fe2O3	0.35	0–0.2
TiO2	2.14	0–0.3
K2O	0.01	—
CaO	1.51	—
NaO	0.50	—
SO3	0.036	—
LOI	13.0	13.9