Abstract

Particle Diffusion Kinetics Of Alkaline Metal Ions In Granular Stannic Phosphotungstate

Author(s): Rabindra Nath Sahu,Susheel K.Mittal, J.S.Banait

The sorption kinetics and intraparticulate diffusivity of alkaline earth cations from aqueous solution using granular stannic phosphotungstate was investigated. The amount adsorbed increased as time increased, reaching equilibrium at about 60 minutes. The mechanism of sorption was found to be particle diffusion controlled. The effect of concentration of the exchanging ion, and the effects of particle size on the kinetics of ion exchange for different cations were studied. The results show that Stannic phosphotungstate is an efficient sorbent for the alkaline earth cations with particle diffusion as the predominant mechanism.


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