Highly effective removal of 22Na, 134Cs and 60Co from aqueous solutions by titanosilicate: a radiotracer study

I. Ali; E. Zakaria; H. Aly

doi:10.1007/s10967-010-0612-7

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 285: Issue 3

Highly effective removal of ²²Na, ¹³⁴Cs and ⁶⁰Co from aqueous solutions by titanosilicate: a radiotracer study

Authors:

I. Ali

I. Ali Hot Labs Centre, Atomic Energy Authority, 13759 Cairo, Egypt

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E. Zakaria

E. Zakaria Hot Labs Centre, Atomic Energy Authority, 13759 Cairo, Egypt

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H. Aly

H. Aly Hot Labs Centre, Atomic Energy Authority, 13759 Cairo, Egypt

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Pages:: 483–489

Online Publication Date:: 21 May 2010

Publication Date:: 01 Sep 2010

Article Category:: Research Article

DOI:: https://doi.org/10.1007/s10967-010-0612-7

Keywords:: Titanosilicate; Radiotracer; Removal; Kinetic studies; Sorption isotherm

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Abstract

Sorption of Na(I), Cs(I) and Co(II) radionuclides from aqueous solutions by titanosilicate have been investigated. The time dependent studies for metal ions showed relatively rapid sorption kinetics between 5 and 30 min to reach equilibrium. A batch adsorption model based on assumption of the pseudo-second-order mechanism was applied to predict the sorption rate, while the equilibrium capacity was calculated at different temperatures. The adsorption of different radionuclides onto titanosilicate was found to be favored at high ions concentrations and low temperature for Na⁺ and Co²⁺ while at high temperature for Cs⁺. Activation energy of adsorption was computed to be 2.35, 24.11 and 5.74 kJ/mol for adsorption of Na(I), Cs(I) and Co(II), respectively. The results revealed that the adsorption of Cs⁺ is the highest relative to Na⁺ and Co²⁺ at different conditions which may be attributed to its low hydration energy. Further, the equilibrium isotherm for the interested ions was analyzed and it was found to obey Frundlich equation.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)