Study of ion-exchange properties of hydrated titanium dioxide towards cesium and strontium cations

Acid-base and sorption properties of spherically granulated material based on hydrated titanium dioxide were studied. It was shown that the sorption capacity of the ion exchanger is due both to the structure (cross-linking density of gels and, consequently, their porosity) and to the number of activ...

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Bibliographic Details
Published in:Russian journal of applied chemistry 2016-09, Vol.89 (9), p.1393-1401
Main Authors: Maslova, M. V., Gerasimova, L. G.
Format: Article
Language:English
Subjects:
Cesium
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Crosslinking
Gels
Industrial Chemistry/Chemical Engineering
Inorganic Synthesis and Industrial Inorganic Chemistry
Ion exchange
Ion exchangers
Radioactive wastes
Sorbents
Sorption
Titanium
Titanium dioxide
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Summary:Acid-base and sorption properties of spherically granulated material based on hydrated titanium dioxide were studied. It was shown that the sorption capacity of the ion exchanger is due both to the structure (cross-linking density of gels and, consequently, their porosity) and to the number of active acid centers. The kinetic specific features of the sorption of cations were considered and it was found that the sorption kinetics is limited by the intraparticle diffusion. It was shown that the sorbent can be used to purify low-salt technological solutions of liquid radioactive wastes.
ISSN:1070-4272
1608-3296
DOI:10.1134/S1070427216090020