Treatment of electrolyte-plasma polishing spent decontamination solution from Cr(III) radionuclides using ultrafiltration membranes
- Authors: Torapava V.V.1, Zaruba A.M.1, Kazimirsky D.A.1, Radkevich A.V.1, Nahula P.K.1, Bildyukevich A.V.2, Hliavitskaya T.A.2
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Affiliations:
- Joint Institute for Power and Nuclear Research – Sosny, National Academy of Sciences of Belarus
- Institute of Physical Organic Chemistry, National Academy of Science of Belarus
- Issue: Vol 14, No 6 (2024)
- Pages: 517-526
- Section: Articles
- URL: https://journals.rcsi.science/2218-1172/article/view/282954
- DOI: https://doi.org/10.31857/S2218117224060083
- EDN: https://elibrary.ru/MAKETZ
- ID: 282954
Cite item
Abstract
This paper presents the results of using ultrafiltration for cleaning solutions, which simulate liquid radioactive wastes – spent decontamination solutions of electrolytic-plasma treatment, from chromium(III) radionuclides 51Cr(III). The transport properties of ultrafiltration membranes prepared from hydrophilized polysulfone, polyethersulfone and regenerated cellulose with different cut off was determined. The dependences of membrane permeability and 51Cr(III) rejection coefficient on the pH of solutions and thermostatting time was established. It was shown that in 8% (NH4)2SO4 solution at pH 7–8, the radionuclide 51Cr(III) formed polynuclear hydroxocomplexes, which were retained by ultrafiltration membranes and precipitated during centrifugation. The most effective membrane material was regenerated cellulose with cut off 10 kDa. This membrane retained approximately 97% of 51Cr(III) at pH 8. It was shown that increasing the time of thermostatting solutions before membrane separation leads to an increase in the retention of 51Cr(III) due to a deeper hydrolysis process with the formation of polynuclear hydroxocomplexes.
About the authors
V. V. Torapava
Joint Institute for Power and Nuclear Research – Sosny, National Academy of Sciences of Belarus
Email: thliavitskaya@gmail.com
Belarus, 223063, Минский р-н, Минская обл., д. Прилесье, Луговослободской с/с, 47/22
A. M. Zaruba
Joint Institute for Power and Nuclear Research – Sosny, National Academy of Sciences of Belarus
Email: thliavitskaya@gmail.com
Belarus, 223063, Минский р-н, Минская обл., д. Прилесье, Луговослободской с/с, 47/22
D. A. Kazimirsky
Joint Institute for Power and Nuclear Research – Sosny, National Academy of Sciences of Belarus
Email: thliavitskaya@gmail.com
Belarus, 223063, Минский р-н, Минская обл., д. Прилесье, Луговослободской с/с, 47/22
A. V. Radkevich
Joint Institute for Power and Nuclear Research – Sosny, National Academy of Sciences of Belarus
Email: thliavitskaya@gmail.com
Belarus, 223063, Минский р-н, Минская обл., д. Прилесье, Луговослободской с/с, 47/22
P. K. Nahula
Joint Institute for Power and Nuclear Research – Sosny, National Academy of Sciences of Belarus
Email: thliavitskaya@gmail.com
Belarus, 223063, Минский р-н, Минская обл., д. Прилесье, Луговослободской с/с, 47/22
A. V. Bildyukevich
Institute of Physical Organic Chemistry, National Academy of Science of Belarus
Email: thliavitskaya@gmail.com
Belarus, 13 Surganov street, Minsk 220072
T. A. Hliavitskaya
Institute of Physical Organic Chemistry, National Academy of Science of Belarus
Author for correspondence.
Email: thliavitskaya@gmail.com
Belarus, 13 Surganov street, Minsk 220072
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