Remote interaction effect of industrial ion exchangers on the electrochemical and sorption equilibrium in scandium sulfate solution
Jumadilov T.K. Imangazy A.M. Khimersen K. Haponiuk J.T.
February 2024Springer Science and Business Media Deutschland GmbH
Polymer Bulletin
2024#81Issue 32023 - 2041 pp.
In this study, we investigated the remote interaction effect between industrial ion exchangers, namely Lewatit CNP LF (in H+ form) and AV-17-8 (in OH− form), in an interpolymer system called Lewatit CNP LF:AV-17-8 (X:Y) with varying molar ratios (6:0, 5:1, 4:2, 3:3, 2:4, 1:5, and 0:6) immersed in a scandium sulfate solution. It should be mentioned that the interpolymer system represents a pair of cross-linked polymers with active functional groups that are in a common solution without direct contact. The mutual activation of the ion exchangers as the interpolymer system in the aqueous medium leads to conformational and electrochemical changes, resulting in their transition to a highly ionized state and enhanced sorption activity. To determine the conditions for maximum scandium ion sorption, we studied the influence of the initial conformational states of Lewatit CNP LF and AV-17-8 during their remote interaction. At a ratio close to 5:1, we observed significant changes in pH and electrical conductivity, which prompted us to thoroughly investigate the electrochemical properties of ratios between 5:1 and 6:0 using pH and electrical conductivity measurements. Our results showed that the interpolymer system Lewatit CNP LF:AV-17-8 (5.6:0.4) exhibited a significant increase in sorption activity toward scandium ions. This research aims to develop highly efficient and selective universal sorbents activated by the remote interaction effect among functional polymers in an interpolymer system for the separation and extraction of a wide range of valuable metals (including scandium) and their compounds from industrial solutions.
Interpolymer systems , Ion-exchangers , Mutual activation , Remote interaction , Scandium ions , Sorption
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Bekturov Institute of Chemical Sciences, 106 Valikhanov Str., Almaty, 050010, Kazakhstan
School of Chemical Engineering, Kazakh-British Technical University, 59 Tole bi Str., Almaty, 050000, Kazakhstan
Institute of Natural Sciences and Geography, Abai Kazakh National Pedagogical University, 13 Dostyk Ave., Almaty, 050010, Kazakhstan
Department of Polymer Technology, Gdansk University of Technology, Gabriela Narutowicza 11/12, Gdańsk, 80-233, Poland
Bekturov Institute of Chemical Sciences
School of Chemical Engineering
Institute of Natural Sciences and Geography
Department of Polymer Technology
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