Contribution of Ion-Exchange and Non-Ion-Exchange Reactions to Sorption of Ammonium Ions by Natural and Activated Aluminosilicate Sorbent

Table 4

Quantity of exchangeable cations desorbed from natural M₄₅C₂₀ sorbent by sorption of NH₄⁺-ions.

𝐶equilb. (NH4^+), mmol/dm^3	Quantity of desorbed cations, mmol/g				∑ Na^+, K^+, Ca^2+, Mg^2+, mmol/g	𝐶NH4^+ in sorbent phase, mmol/g
	Na^+	K^+	Ca^2+	Mg^2+
1.950	0.085	0.020	0.370	0.092	0.567	0.550
4.143	0.115	0.025	0.481	0.208	0.829	0.857
8.806	0.134	0.029	0.741	0.301	1.207	1.194
23.363	0.154	0.035	0.952	0.395	1.536	1.637
48.228	0.160	0.039	1.105	0.453	1.757	1.772
73.108	0.170	0.041	1.180	0.509	1.901	1.892
98.076	0.170	0.041	1.180	0.509	1.901	1.924