KINETICS OF SORPTION OF Ca2+ AND Mg2+ IONS IN CLINOPTILOLITE MODIFIED BY Na+ IONS

A.N.Nuriyev, F.T.Makhmudov, M.A.Hajiyev, M.A.Rahimli, M.A.Abbasov

Study of kinetic curves of sorption of Ca²⁺ and Mg²⁺ ions in Na-clinoptilolite shows that for both of ions-exchange reaction occurs in mixed diffusion area. In the first stage sorption process goes on by external diffusion mechanism with a majority of ions, but in the second stage the process of sorption proceeds by internal diffusion mechanism.

Keywords : clinoptilolite, sorption, ion-exchange process, kinetics

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