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E-Journal of Chemistry
Volume 8 (2011), Issue 2, Pages 917-923
http://dx.doi.org/10.1155/2011/686592

Efficient Removal of Ce(III) and Eu(III) Ions from Aqueous Solutions by Local Clay -A Radiotracer Study

Som Shankar Dubey, Battula Sreenivasa Rao, B. S. A. Andrews, and B.Venkata Kiran

Department of Chemistry, GITAM Institute of Technology GITAM University, Visakhapatnam-530045, India

Received 17 June 2010; Accepted 15 August 2010

Copyright © 2011 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Radiotracer technique has been used to study the removal behavior of Ce(III) and Eu(III) ions from aqueous solutions by local clay. Adsorptive concentration (10-4–10-6 mol dm-3), pH (ca 2.0-9.0) and temperature (303-333 K) were examined for assessing optimal conditions for removal of these ions. The adsorption phenomenon was highly dependent on the amount of the adsorbent concentrations. The uptake of ions, which fitted well for Freundlich isotherm, increased with increase in the temperature and no significant desorption took place in the studied temperature range. The energy of adsorption process for the both cations indicates that the adsorption phenomenon is of chemisorption type. The rate kinetics of the adsorption followed the first order rate kinetics.