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Information × Registration Number 0222U001410, 0120U103063 , R & D reports Title Removal of toxic components from industrial wastes using sorption-biological method. popup.stage_title Head Ogenko Volodymyr M., Доктор хімічних наук Registration Date 27-01-2022 Organization Institute of General and Inorganic Chemistry. VI Vernadsky National Academy of Sciences of Ukraine popup.description2  Objects of research are composition, morphology, sorption and phytotoxic properties of materials based on natural clay minerals, development of plant sprouts. The aim of the research in the second stage was to form the functional properties of natural clay minerals by their chemical activation and modification with hydrated iron oxide (III) to synthesis sorbents for water treatment and long-acting fertilizers. Research methods - electron transmission and scanning microscopy, porometry, atomic absorption, X-ray phase analysis, etc. A method of directed regulation of the functional properties of zeolites has been developed, which consists in their modification by particles of inorganic sorbent hydrated iron oxide (III) with certain morphological features. The obtained composites contained either modifier nanoparticles (30-50 nm), which are localized in mesopores, or micron-sized particles, which are located in macropores. It was found that the composite modified with nanoparticles is characterized by increased sorption capacity to Pb2+ ions. The degree of removal of these toxic ions exceeds 99% when purifying a multicomponent solution containing ions of other metals, while it is possible to reduce their content to the level of maximum allowable concentration. The removal degree of is 75% for unmodified zeolite. Equilibrium is within 2-3 hours, and the half-life time is 10-15 minutes. The maximum sorption capacity is 50 mg g-1. The composite showed increased sorption capacity for Ca2+ ions: the degree of their removal reaches 78% (50% for the initial zeolite). Therefore, the composites are recommended for the removal of Pb2+ ions from water and for its softening. It was found that the application of composites to unfertilized soil leads to intensification of plant development. For sprouts of cultivated plants, an almost twofold increase in the total mass and length of the main root, as well as intensive development of lateral roots were found. Additional benefits can Product Description popup.authors Dzyazko Yuliya S Kudelko Kateryna O Ogenko Volodymyr M Rozhdestvenska Lyudmyla Mychailivna popup.nrat_date 2022-03-09 Close