Radiochemical study of Co2+ sorption on chlorite and kaolinite

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Radiochemical study of Co2+ sorption on chlorite and kaolinite.pdf (401.01 KB)

Date

1999

Authors

Shahwan, T.
Erten, H. N.

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Source Title

Journal of Radioanalytical and Nuclear Chemistry

Print ISSN

0236-5731

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Akademiai Kiado Rt.

Volume

241

Issue

1

Pages

151 - 155

Language

English

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Article

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Abstract

In this work, the sorption behavior of Co(II) ions on natural chlorite and kaolinite as a function of time, concentration and temperature was studied. 60Co radiotracer method and the batch technique were used. The kinetic results indicated that about one day of contact time was enough to achieve equilibrium. The sorption process was described by Freundlich type isotherms. Sorption of Co(II) ions on both clays was found to be endothermic with ΔH(o) (kJ/mol) and ΔS(o) (kJ/mol·K) being 33 and 0.14 for kaolinite and 17 and 0.102 for chlorite, respectively. The magnitudes of the corresponding ΔG(o) values suggest that sorption occur mainly via an ion exchange mechanism on both clays.

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Keywords

Aluminum silicate, Cobalt, Sodium chlorite, Ion exchange, Kinetics, Mathematical analysis, Radiochemistry, Temperature, Thermodynamics, Time

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http://hdl.handle.net/11693/25221

Published Version (Please cite this version)

http://dx.doi.org/10.1007/BF02347303

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Scholarly Publications - Chemistry