INVESTIGATION OF THE EFFICIENCY OF RHENIUM ION SORPTION USING ION-EXCHANGE RESINS POLYACRYLIC ACID: POLY-4-VINYLPYRIDINE IN VARIOUS RATIOS

This study is devoted to the study of the efficiency of sorption of rhenium ions using ion-exchange resins containing polyacrylic acid (PAK) and poly-4-vinylpyridine (P4VP) in various composition ratios. Goals and objectives. To investigate synthesized resins with different ratios of PAK:P4VP and to study their sorption capacity, kinetics and selectivity with respect to rhenium ions. Methods. Thanks to a comprehensive experimental analysis, including periodic sorption experiments and characterization methods such as spectrophotometry and atomic emission spectroscopy, the effect of resin composition on sorption efficiency was clarified during the study. Results and discussion. Optimal ratios have been determined to ensure maximum efficiency of rhenium ion removal. In addition, the study examines the main mechanisms governing sorption properties, with an emphasis on the relationship between resin composition, surface chemical composition and ion interaction. Conclusion. The results obtained contribute not only to the development of special ion-exchange materials for the effective extraction and purification of rhenium, but also contribute to a deeper understanding of ion sorption processes. This research has important implications for rhenium-dependent industries, offering strategies for solving problems related to its extraction, purification and use.