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Information × Registration Number 0220U000325, 0118U003018 , R & D reports Title New sorbents, functionalized and modified nanomaterials with magnetic properties, to remove ecotoxicants from aqueous media popup.stage_title Head Pshinko Galina Nikolaevna, Registration Date 29-01-2020 Organization A.V Dumansky Institute of Colloid Chemistry and Water Chemistry popup.description2 Objects of research - sorbents - magnesium and zinc-aluminum layered double hydroxides (LDH) and their composites with magnetic properties. The aim of this work is to study the sorption ability of new sorption materials functionalized with citrate ions and modified with nanoparticles with magnetic properties to extract U(VI) and Eu(III) (a chemical analogue of radionuclides Am and other TUE), by controlling the structure and phase composition there of X-ray method and other physicochemical methods, in particular, IR-spectroscopy. Research methods - X-ray, atomic absorption, spectrophotometric, sorption in static conditions. Main results: sorption extraction of radionuclides by citrate forms of Mg,Al-LDH and Zn,Al-LDH and their magnetic composites was investigated. It has been shown that sorption materials with magnetic properties are sufficiently effective for sorption extraction of U(VI) and Eu(III) from aqueous media, as a chemical analogue of Me(III), including Am radionuclides from large volumes of water, macrocations of natural waters (shown by the example of Ca ions) practically do not reduce the degree of extraction of U(VI) from aqueous solutions, and fulvic acids not only do not reduce the degree of extraction, but on the contrary there is a significant increase in the efficiency of water purification. A sorption mechanism is considered, which primarily depends on the chemical nature of radionuclides (domination of complexation or a tendency to hydrolysis), as well as their concentration in solution, which is especially important when extracting radionuclides. In addition, for elements prone to hydrolysis, in this case, for example, for Eu (III), there is practically no single sorption mechanism for all pH values of the solution. Field of application - environmental protection. Product Description popup.authors Бартницький Олександр Євгенович Демуцька Людмила Миколаївна Демченко Віктор Якович Зуб Віра Яківна Кобець Світлана Олексіївна Косоруков Олександр Олександрович Куліченко Сергій Анатолійович Мацибура Галина Савівна Пузирна Любов Миколаївна Юрлова Людмила Юріївна Яцик Богдан Петрович popup.nrat_date 2020-04-02 Close