Search academic texts

Information × Registration Number 0221U103419, 0120U100183 , R & D reports Title Obtaining high-efficiency sorption materials for the purification of radionuclides from aqueous solutions. popup.stage_title Head Sofronov Dmitry S., Registration Date 20-02-2021 Organization State Scientific Institution "Institute for Single Crystals" of National Academy of Sciences of Ukraine popup.description2  During the study the main attention was paid to the elaboration of the synthesis method of of sorption materials and investigation of their sorption properties; development of controlled inorganic synthesis of inorganic compounds; search for new selective sorption materials for the extraction of rare earth elements. The influence of MnO(OH) content on extraction efficiency and sorption capacity of new sorption materials was studied for the first time. It was found that the modification of diatomaceous earth, lignin and copolymer with MnO(OH) increases the efficiency of extraction of strontium, cobalt, europium, iron, zinc, cadmium, copper, lead to 95-98% within the pH range 4-8. It was found that the material based on diatomaceous earth possesses best sorption performance by a, and was proposed for water purification from ions of divalent and trivalent metals. The use of sorbents based on iron oxides for the extraction of radionuclides in complex water treatment devices is proposed. The influence of synthesis conditions on the morphological characteristics of titanium dioxide particles was studied for the first time. It is shown that control of morphological properties of particles allows to influence the properties of materials obtained from synthesized compounds significantly. Compacts obtained from particles synthesized without the addition of emulsifier (regardless of the temperature of gel deposition) are characterized by the lowest value of microhardness (540 kg/mm2), and the highest microhardness is attributed to the compact obtained by precipitation at 20°C with emulsifier C (Ti): C (OP9) 1: 0.5 (1450 kg/mm2). It was found that TiO2•nH2O particles are effective in selective removal rare earth elements ions, and their heat treatment leads to a significant reduction in sorption properties. A number of methods for the synthesis of new sorption materials have been developed. Product Description popup.authors popup.nrat_date 2021-02-20 Close