Processes for treatment of liquid radioactive waste containing seawater

The main sources of formation of liquid radioactive waste (LRW) containing seawater are determined, and the main problems arising in management of such waste are analyzed. Sorption methods for removing long-lived Cs and Sr radionuclides from highly mineralized (>1 g L –1 ) LRW are determined. The...

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Bibliographic Details
Published in:Radiochemistry (New York, N.Y.) N.Y.), 2017-07, Vol.59 (4), p.407-413
Main Authors: Avramenko, V. A., Egorin, A. M., Papynov, E. K., Sokol’nitskaya, T. A., Tananaev, I. G., Sergienko, V. I.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Composite materials
Formaldehyde resins
Mineralization
Nuclear Chemistry
Nuclear powered ships
Polymer matrix composites
Radioactive wastes
Seawater
Sorbents
Sorption
Wastewater treatment
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Summary:The main sources of formation of liquid radioactive waste (LRW) containing seawater are determined, and the main problems arising in management of such waste are analyzed. Sorption methods for removing long-lived Cs and Sr radionuclides from highly mineralized (>1 g L –1 ) LRW are determined. The main physicochemical and sorption characteristics, advantages, and drawbacks of candidate sorbents for removing Cs and Sr radionuclides are described. Examples of using SRM and VS-5 chemical reaction sorption materials developed for removing Sr from LRW with the mineralization of up to 60 g L –1 are given. The results of studying composite materials based on BaSiO 3 and resorcinol–formaldehyde resins, intended for removing Cs and Sr radionuclides from seawater, are analyzed. Composite sorbents of such type efficiently remove Cs and Sr radionuclides from seawater. Processes developed by the authors and brought into practice at various plants of the Far East for treatment of multicomponent LRW formed in the course of operation, repair, and decommissioning of nuclear-powered surface ships and submarines are described.
ISSN:1066-3622
1608-3288
DOI:10.1134/S1066362217040142