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Sorption of Cs+ and Sr2+ Cations by Titanium(IV) Phosphates from Solutions Modeling the Nuclear Power Plant Bottom Residue
- Authors: Korneikov R.I.1, Tikhomirova E.L.1, Aksenova S.V.1, Petrov A.M.1
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Affiliations:
- Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials (separate subdivision), Kola Scientific Center (Federal Research Center), Russian Academy of Sciences, 184209, Akademgorodok, Apatity, Murmansk oblast, Russia
- Issue: Vol 59, No 1 (2023)
- Pages: 83-87
- Section: Articles
- URL: https://journals.rcsi.science/0002-337X/article/view/140126
- DOI: https://doi.org/10.31857/S0002337X23010116
- EDN: https://elibrary.ru/OTIYEX
- ID: 140126
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Abstract
Using a model solution, we have demonstrated the feasibility of using titanium(IV) oxyhydroxyphosphate-based ion-exchange materials for extraction of Cs+ and Sr2+ 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 Sr2+, 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.
About the authors
R. I. Korneikov
Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials (separate subdivision), Kola Scientific Center (Federal Research Center), Russian Academy of Sciences, 184209, Akademgorodok, Apatity, Murmansk oblast, Russia
Email: r.korneikov@ksc.ru
Россия, 184209, Мурманская обл., Апатиты, Академгородок, 26а
E. L. Tikhomirova
Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials (separate subdivision), Kola Scientific Center (Federal Research Center), Russian Academy of Sciences, 184209, Akademgorodok, Apatity, Murmansk oblast, Russia
Email: r.korneikov@ksc.ru
Россия, 184209, Мурманская обл., Апатиты, Академгородок, 26а
S. V. Aksenova
Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials (separate subdivision), Kola Scientific Center (Federal Research Center), Russian Academy of Sciences, 184209, Akademgorodok, Apatity, Murmansk oblast, Russia
Email: r.korneikov@ksc.ru
Россия, 184209, Мурманская обл., Апатиты, Академгородок, 26а
A. M. Petrov
Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials (separate subdivision), Kola Scientific Center (Federal Research Center), Russian Academy of Sciences, 184209, Akademgorodok, Apatity, Murmansk oblast, Russia
Author for correspondence.
Email: r.korneikov@ksc.ru
Россия, 184209, Мурманская обл., Апатиты, Академгородок, 26а
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