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

Table 3

Surface properties of natural and modified kaolinites.

Samples	𝑆BET; (m^2·g^−1)	Total pore volume; (cm^3·g^−1)	Average pore diameter; (nm)	Total acidity; (m·equiv·g^−1)
K	19.1	0.0075	15.65	5.1
AHK	39.9	0.0183	18.36	5.3
HK	13.9	0.0059	16.97	4.9
HAK	56.09	0.0171	12.23	3.0