Sorption of Cs+ and Sr2+ Cations by Titanium(IV) Phosphates from Solutions Modeling the Nuclear Power Plant Bottom Residue

— Using a model solution, we have demonstrated the feasibility of using titanium(IV) oxyhydroxyphosphate-based ion-exchange materials for extraction of Cs + and Sr 2+ cations from multicomponent high-salt bottom residues. Conditions for the use of the ion exchangers have been optimized experimentall...

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Bibliographic Details
Published in:Inorganic materials 2023, Vol.59 (1), p.81-85
Main Authors: Korneikov, R. I., Tikhomirova, E. L., Aksenova, S. V., Petrov, A. M.
Format: Article
Language:English
Subjects:
Cations
Cesium
Chemistry
Chemistry and Materials Science
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Ion exchange
Ion exchange materials
Ion exchangers
Materials Science
Nuclear power plants
Phosphates
Residues
Sorbents
Titanium
Zirconium
Citations: Items that this one cites
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Summary:— Using a model solution, we have demonstrated the feasibility of using titanium(IV) oxyhydroxyphosphate-based ion-exchange materials for extraction of Cs + and Sr 2+ cations from multicomponent high-salt bottom residues. Conditions for the use of the ion exchangers have been optimized experimentally: liquid : solid = 50, t = 25°C. It has been shown that Cs + is effectively extracted at pH 2, whereas Sr 2+ , at pH 8. The zirconium-modified sorbent has been shown to have a higher affinity for metal cations. The modified sorbent is especially selective for cesium in the acid pH region owing to the higher mobility of the protons of its hydrogen phosphate groups in comparison with the unmodified sorbent composition.
ISSN:0020-1685
1608-3172
DOI:10.1134/S0020168523010119