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

Table 5

Quantity of exchangeable cations desorbed from acidly treated 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+
1.695	0.029	0.013	0.504	0.036	0.581	0.805
3.787	0.040	0.015	0.677	0.058	0.790	1.213
8.288	0.048	0.017	0.909	0.071	1.046	1.712
22.951	0.053	0.017	0.949	0.093	1.112	2.049
47.607	0.053	0.019	0.949	0.093	1.113	2.393
72.592	0.053	0.019	0.949	0.093	1.113	2.408
97.589	0.053	0.019	0.949	0.093	1.113	2.411