Ion exchange dynamics in cerium nitrate solution regulated by remotely activated industrial ion exchangers
Jumadilov T. Yskak L. Imangazy A. Suberlyak O.
1 July 2021MDPI AG
Materials
2021#14Issue 13
Many technological solutions contain valuable components as waste and can become an additional source of rare-earth elements to meet the needs of modern production. The development of technologies based on commercially available and cheap sorbents reveals the possibility for rare earth recovery from various solutions. This paper provides research on using a combination of KU-2-8 and AV-17-8 ion exchangers in different molar ratios for cerium ions sorption from its nitrate solution. The mutual activation of the ion exchangers in an aqueous medium provides their transformation into a highly ionized state by the conformational and electrochemical changes in properties during their remote interaction. The ion exchange dynamics of solutions were studied by the methods of electrical conductivity, pH measurements, and atomic emission analysis of the solutions. The research showed that the maximum activation of polymers was revealed within the molar ratio of KU-2-8:AV-17-8 equal to 3:3. In more detail, in comparison to AV-17-8, this interpolymer system showed an increase in the sorption degree by more than 1.5 times after 6 h of interaction. Moreover, compared with KU-2-8, the same interpolymer system showed an increase in the degree of cerium ions sorption by seven times after 24 h of interaction. As a result, the total cerium ions sorption degree after 48 h of sorption by individual KU-2-8 and AV-17-8 was 38% and 44%, respectively, whereas the cerium ions sorption degree by the same interpolymer system in the molar ratio 3:3 became 51%. An increase in the sorption degree of cerium ions by the interpolymer system in comparison with individual ion exchangers can be explained by the achievement of a high ionization degree of ion exchangers being activated in the interpolymer system by the remote interaction effect.
Cerium ions , Interpolymer system , Ion exchangers , Remote interaction , Sorption
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Laboratory of Synthesis and Physicochemistry of Polymers, Bekturov Institute of Chemical Sciences, 106 Valikhanov Str, Almaty, 050010, Kazakhstan
Department of Chemistry, Kazakh National Women’s Teacher Training University, 99 Ayteke bi Str, Almaty, 050000, Kazakhstan
School of Chemical Engineering, Kazakh-British Technical University, 59 Tole bi Str, Almaty, 050000, Kazakhstan
Department of Chemical Technology of Plastics Processing, Lviv Polytechnic National University, 12 Bandera Str, Lviv, 79013, Ukraine
Laboratory of Synthesis and Physicochemistry of Polymers
Department of Chemistry
School of Chemical Engineering
Department of Chemical Technology of Plastics Processing
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