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Information × Registration Number 0219U000884, 0116U004305 , R & D reports Title Radiation-chemical synthesis of new nanocomposite adsorbents on the basis of polymeric fibers for selective removal of radionuclides from technological effluents of the entities of a nuclear and fuel cycle popup.stage_title Head Bondar Yuliia Vadymivna, Registration Date 12-03-2019 Organization The State Scientific Centre of Environmental Radiogeochemistry popup.description2 Final report; 89 pages; 10 tables; 34 figures; 92 references. The research object is to develop the technological principals for production the nanocomposite adsorbents based on modified polymer fibers (polypropylene and polyacrylonitrile ones) for selective removal of radionuclides. The goal of the research is to develop the technological principals and to conduct a two-step synthesis of new nanocomposite adsorbents based on the modified polymer fibers for preconcentration and selective removal of radionuclides from contaminated waters of the enterprises of nuclear and fuel cycle; to carry out the investigations of physical - chemical and adsorption properties of composite fibers; to find the optimal synthesis conditions for production of composite adsorbents with effective adsorption and working characteristics. The research included both methods for modifications of polymer fibers and for determination of optimal conditions for production of effective composite adsorbents. The research methods as radiation-induced graft polymerization, polymer-analogous transformations, X-ray diffraction studies, IR-Fourier spectrometry, scanning electron microscopy and X-ray microanalysis, atomic absorption spectrophotometry, ?- spectrometry, and etc. were used in the project. The experimental results for the modification of polymeric fibers and the synthesis of composite sorbents on their basis for selective sorption of radionuclides are considered in the project. The polymer fibers with sorption active double ferrocyanides (K-Ni and K-Cu) and polymer fibers with manganese dioxide demonstrated high chemical stability and high adsorption parameters during the removal of stable nuclides and radionuclides from model solutions with high content of competing ions. Product Description popup.authors Бондар Юлія Вадимівна Задвернюк Галина Петрівна Кузенко Світлана Володимирівна Сливінський Віктор Михайлович popup.nrat_date 2020-04-02 Close