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

Larisa Belchinskaya | Zendy; Л. А. Новикова | Zendy; V. Yu. Khokhlov | Zendy; Jen Ly Tkhi | Zendy

Open Access

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

Author(s) -

Larisa Belchinskaya,

Л. А. Новикова,

V. Yu. Khokhlov,

Jen Ly Tkhi

Publication year - 2013

Publication title -

journal of applied chemistry

Language(s) - English

Resource type - Journals

eISSN - 2314-6923

pISSN - 2356-7171

DOI - 10.1155/2013/789410

Subject(s) - sorbent , sorption , chemistry , adsorption , inorganic chemistry , aluminosilicate , ammonium , ion exchange , alkali metal , ion , catalysis , organic chemistry

The effect of acid and alkaline activation of complex natural aluminosilicate sorbent on its chemical composition, surface properties, and adsorption capacity towards ammonium ions was studied. An increase in specific surface area of the sorbent by 1.3 times after acid treatment and by 1.5 times after alkaline activation was shown. The change of ion-exchange complex of sorbent as a result of activation was observed. Sorption isotherms of ammonium ions on natural and activated samples were obtained and were satisfactorily described by the Langmuir equation. The evaluation and comparison of desorbed cations of alkali and alkaline earth metals were carried out. It was confirmed that ion-exchange processes primarily contributed to sorption of ammonium ions by natural and acid-activated silica-alumina, in contrast to alkali-activated one, for which absorption of nonexchangeable ammonium ions increased adsorption capacity of ammonium ions by 1.5 times

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