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