By ion exchange undesirable ions are replaced by others which don't contribute to
contamination of the environment. The method is technologically simple and enables …

Zeolite minerals are crystalline, hydrated aluminosilicates of alkali and alkaline earth cations
characterized by an ability to hydrate/dehydrate reversibly and to exchange some of their …

Cation exchange equilibria of the most common sedimentary zeolites are reviewed.
Selected exchange isotherms and thermodynamic equilibrium constants are reported and …

This study describes the state-of-the-art with regard to the use of natural zeolites in the
protection of the environment. The review is made up of four main sections. The first …

In this paper the technical feasibility of various adsorbents for mercury removal from
contaminated waters has been studied. Adsorption isotherms of mercury ions in aqueous …

Recent findings of clinoptilolite-bearing volcanoclastic deposits in northern Sardinia
promoted a study aimed at evaluating the cation exchange properties of this zeolite in view …

After a historical survey, the present status of research on thermodynamic aspects of ion
exchange in Italian natural zeolites, namely phillipsite, chabazite and clinoptilolite, is …

Fixed beds of Mg-enriched sepiolite were percolated through Co2+, Cu2+, Zn2+, Cd2+ and
Pb2+ single-and multicomponent heavy-metal solutions to study both the dynamic …

Sardinian natural clinoptilolites are examined to evaluate their adsorption for the metals,
copper, cadmium, lead and zinc, as well as ammonium removal. The natural material is …

Sardinian natural clinoptilolites are examined to evaluate their performance for heavy
metals, ie, lead, cadmium, copper, and zinc, removal. The natural material is either used as …