Removal of 90Sr from nitric acid solutions with sorbents based on di-tert-butyldicyclohexyl-18-crown-6
- Authors: Milyutina V.V.1, Nekrasova N.A.1, Dovhyi I.I.2,3, Bezhin N.A.2, Baulin V.E.1,4, Tsivadze A.Y.1
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Affiliations:
- Frumkin Institute of Physical Chemistry and Electrochemistry
- Sevastopol State University
- Marine Hydrophysical Institute
- Institute of Physiologically Active Compounds
- Issue: Vol 59, No 2 (2017)
- Pages: 166-169
- Section: Article
- URL: https://journals.rcsi.science/1066-3622/article/view/223816
- DOI: https://doi.org/10.1134/S1066362217020096
- ID: 223816
Cite item
Abstract
A series of impregnated sorbents based on di-tert-butyldicyclohexyl-18-crown-6 (DTBDCH18C6), various diluents (1-octanol, nitrobenzene, telomeric alcohol n3), and supports (Porolas-Т, LPS-500, hydrophobized silica gel) for removing tracer and weighable amounts of Sr ions from nitric acid solutions were prepared. The distribution coefficient of tracer amounts of 90Sr on all the synthesized sorbents increases with an increase in the HNO3 concentration in the range 1–7 M. The most pronounced increase in the sorption occurs with an increase in the HNO3 concentration to 3 M. The maximal distribution coefficient of 90Sr (Kd = 158 cm3 g–1) is reached for the sorbent based on DTBDCH18C6 and 1-octanol in 7 M HNO3. Experiments on sorption of weighable amounts of Sr2+ ions show that the static capacity of all the prepared sorbents for Sr in nitric acid solutions amounts to 4.3, 9.2, and 8.4 mg g–1 for the sorbents based on 1-octanol, nitrobenzene, and telomeric alcohol n3, respectively. The synthesized sorbents are suitable for radioanalytical determination of Sr radionuclides in liquid radioactive waste and in radioactively contaminated natural objects.
About the authors
V. V. Milyutina
Frumkin Institute of Physical Chemistry and Electrochemistry
Author for correspondence.
Email: vmilyutin@mail.ru
Russian Federation, Leninskii pr. 31, korp. 4, Moscow, 119071
N. A. Nekrasova
Frumkin Institute of Physical Chemistry and Electrochemistry
Email: vmilyutin@mail.ru
Russian Federation, Leninskii pr. 31, korp. 4, Moscow, 119071
I. I. Dovhyi
Sevastopol State University; Marine Hydrophysical Institute
Email: vmilyutin@mail.ru
Russian Federation, ul. Universitetskaya 33, Sevastopol, 299053; ul. Kapitanskaya 2, Sevastopol, 299011
N. A. Bezhin
Sevastopol State University
Email: vmilyutin@mail.ru
Russian Federation, ul. Universitetskaya 33, Sevastopol, 299053
V. E. Baulin
Frumkin Institute of Physical Chemistry and Electrochemistry; Institute of Physiologically Active Compounds
Email: vmilyutin@mail.ru
Russian Federation, Leninskii pr. 31, korp. 4, Moscow, 119071; Severnyi proezd 1, Chernogolovka, Moscow oblast, 142432
A. Yu. Tsivadze
Frumkin Institute of Physical Chemistry and Electrochemistry
Email: vmilyutin@mail.ru
Russian Federation, Leninskii pr. 31, korp. 4, Moscow, 119071