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Information × Registration Number 0219U000926, 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 15-03-2019 Organization A.V Dumansky Institute of Colloid Chemistry and Water Chemistry popup.description2 Objects of research - the process of sorption purification of aqueous media of Cs and Sr and heavy metals Co(II), Ni(II) and Cd(II) magnetite and magnetic Fe3O4/KZnHCFe (II). The purpose of this work is to investigate the sorption capacity of sorbents with magnetic properties - composition magnetic Fe3O4/KZnHCFe (II) and magnetite for comparison, for the removal of Cs-137 and Sr-90 and heavy metals Co(II), Ni(II) and Cd(II) from aqueous solutions. Research methods - X-ray, atomic absorption, spectrophotometric, sorption in static conditions. Main the results: sorption extraction of radionuclides Cs-137 and Sr-90 and heavy metals Co(II), Ni(II) and Cd(II) with composite sorbent - magnetic Fe3O4/KZnHCFe (II) and magnetite are given. It is shown that magnetic Fe3O4/KZnHCFe (II), in contrast to magnetite, is promising for decontamination of radioactive contaminated aqueous media. The important properties of the proposed sorbent is its high selectivity with respect to Cs-137, rapid sorption kinetics, the ability to rapidly separate its solid phase from aqueous solutions by magnetic separation. It was shown that for magnesium Fe3O4/KZnHCFe (II) there were significantly better sorption and selective properties in relation to Cs-137, for which the degree of sequestration is (99.0-99.8%) in the wide area of pH = (2.8-9,0) than Sr-90 - the maximum degree is (35,2-36,0) % and is achieved in a narrower range pH = (4,0 - 7,0).The sorption ability of magnetic sorbents in relation to the compounds Cu(II), Ni(II) and Cd(II) is investigated. It is shown that for heavy metals, magnetite is even somewhat more effective than a composite sorbent.The maximum removal of these heavy metal ions is observed at pH = 4.0. Field of application - environmental protection. Field of application - environmental protection. Product Description popup.authors Демченко Віктор Якович Косоруков Олександр Олександрович Мацибура Галина Савівна Пузирна Любов Миколаївна Юрлова Людмила Юріївна Яцик Богдан Петрович popup.nrat_date 2020-04-02 Close