Sorption of 90Sr by a T-3K carbonate-containing zirconium dioxide

A physicochemical properties of carbonate-containing zirconium hydroxide T-3K sorbent as well as selective 90 Sr sorption from natural waters were studied. It was shown that sorbent consist of ZrO 2 (46.39%), Na 2 O (1.78%) and Al 2 O 3 (1.42%) as the major components in microporous carbonate-contai...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2022, Vol.331 (9), p.4021-4030
Main Authors: Voronina, Anna V., Belokonova, Nadezhda V., Suetina, Anna K., Semenishchev, Vladimir S.
Format: Article
Language:English
Subjects:
Aluminum oxide
Carbonates
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Hadrons
Heavy Ions
Inorganic Chemistry
Nuclear Chemistry
Nuclear Physics
Physical Chemistry
Seawater
Sorbents
Sorption
Strontium
Strontium 90
Strontium carbonate
Zirconium dioxide
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Summary:A physicochemical properties of carbonate-containing zirconium hydroxide T-3K sorbent as well as selective 90 Sr sorption from natural waters were studied. It was shown that sorbent consist of ZrO 2 (46.39%), Na 2 O (1.78%) and Al 2 O 3 (1.42%) as the major components in microporous carbonate-containing zirconium hydroxide where sorption of 90 Sr occurs due to formation of sparingly soluble strontium carbonate. Affinity of the T-3K sorbent for alkaline earth ions corresponded to the reverse trend of carbonates solubility: Sr > Ba > Ca ≫ Mg and maximum strontium sorption was observed at pH 7–10. Distribution coefficients of strontium were (1.3 ± 0.1) × 10 3  mL/g for low mineralized water with calcium content of 16 mg/L and 95 mL/g for seawater; static exchange capacity of the sorbent was 30.4 ± 0.5 mg/g.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-022-08427-6