FEATURES OF NEODYMIUM ION SORPTION BY MODIFIED INTERPOLYMER SYSTEMS

In this study, we investigated the selective sorption of neodymium ions from a mixture of solutions using interpolymer systems consisting of two industrial sorbents – Amberlite IR120(Н+) and AB-17-8(ОН-) ion exchange resins – in various molar ratios. Based on the obtained results, we found that maximum polymer activation occurs at an Amberlite IR120:AB-17-8 ratio of 5:1. These ratios yield the highest neodymium ion sorption. The sorption process was carried out in static mode. After 48 hours of remote polymer interaction, the maximum neodymium ion sorption was 56.2%, and the degree of polymer chain binding was 3.96%. The calculated values of the unactivated polymers demonstrated that the sorption activity of the interpolymer systems in the Amberlite IR120:AB-17-8 (5:1) and Amberlite IR120:AB-17-8 (3:3) ratios is significantly higher than that of the original unactivated polymers Amberlite IR120 (6:0) and AB-17-8 (0:6). The results demonstrate that the electrochemical and sorption properties of the original polymers are altered in the interpolymer systems, increasing the reactivity of the functional groups. This allows them to be used in the development of an effective sorption technology for the separation of neodymium ions. Thus, it is demonstrated that the interpolymer systems can be used in industry by varying the sorption conditions for the efficient extraction of neodymium from industrial solutions.

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