Na-HEU zeolite synthesis for the removal of Th(IV) and Eu(III) from aqueous waste by batch process

Sharma, Pankaj ORCID: https://orcid.org/0000-0003-2319-260X, Sharma, Monika and Tomar, Radha 2013. Na-HEU zeolite synthesis for the removal of Th(IV) and Eu(III) from aqueous waste by batch process. Journal of the Taiwan Institute of Chemical Engineers 44 (3) , pp. 480-488. 10.1016/j.jtice.2012.12.009

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Abstract

The present investigation deals with the synthesis of sodium rich heulandite (Na-HEU) zeolite and its applicability as a sorbent for the removal of Th(IV) and Eu(III) from aqueous waste. The diffraction and spectroscopic studies confirm that the as-synthesized material have crystalline heulandite phase. The electron microscopic study reveals the synthesis of nanosize Na-HEU zeolite particles. The sorption of Th(IV) and Eu(III) on as-synthesized Na-HEU zeolite in a single component system under batch process has also been investigated as a function of solution pH, contact times, sorbent dose, initial metal ion concentration and temperature. Based on the Langmuir sorption isotherm model, the predicted maximum monolayer sorption capacities of the as-synthesized Na-HEU for Th(IV) and Eu(III) at 323 K are found to be 0.62 mequiv./g and 0.66 mequiv./g, respectively. Thermodynamic parameters demonstrate the spontaneous and endothermic nature of the studied sorption systems.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry Cardiff Catalysis Institute (CCI)
Publisher:	Elsevier
ISSN:	1876-1070
Date of Acceptance:	15 December 2012
Last Modified:	16 Nov 2022 16:46
URI:	https://orca.cardiff.ac.uk/id/eprint/153535

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