Abnormal activity of functional groups during uranyl ions sorption by polymethacrylic acid-poly-4-vinylpyridine intergel system
Полиметакрил қышқылы-поли-4-винилпиридин интергелді жүйелерімен уранил иондарын сорбциялау барысындағы функционалды топтардың аномальды активтілігі
Аномальная активность функциональных групп при сорбции ионов уранила интергелевой системой «полиметакриловая кислота – поли-4-винилпиридин»
Kozhataevich J.T. Altaevna U.A. Khuangul K. Gennadievich K.R. Grazulevicius J.V.
2021E.A.Buketov Karaganda State University Publish House
Bulletin of the Karaganda University Chemistry Series
2021#104Issue 447 - 56 pp.
Uranyl ions sorption by intergel system consisting of polymethacrylic acid hydrogel (hPMAA) and poly-4vinylpyridine hydrogel (hP4VP) has been studied. First, reciprocal activation of PMAA and P4VP polymeric hydrogels in water environment was examined in order to predict intergel system sorption activity. Based on the obtained results, it was found that area of maximum hydrogel activation was within the ratios of 100 % hPMAA and 67 % hPMAA:33 % hP4VP. The maximum rate of uranyl ions extraction was also observed within these ratios. The highest uranyl ions sorption by intergel system occurred at 83 %hPMAA:17 % hP4VP ratio. Maximum uranyl ions extraction rate after 56 hours of hydrogels remote interaction was 82.5 %, when polymeric chain binding rate was 9.94 % and effective dynamic exchange capacity was 1.12 mmol/g. Significant increase of intergel system sorption activity within the ratios of 100 % hPMAA and 67 % hPMAA:33 % hP4VP in comparison with initial inactivated hydrogels 100 % hPMAA and 100 % hP4VP was confirmed by combined calculation data of extraction rates of inactivated PMAA and P4VP polymeric hydrogels. The obtained results illustrated changes of initial polymeric hydrogels’ electrochemical sorption properties in intergel system leading to functional groups obtaining higher reactive ability, which made it possible to use them for further development of highly efficient uranyl ions extraction sorption technology.
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JSC “Institute of Chemical Sciences named after A.B. Bekturov”, Academician of the Russian Academy of Natural History, 106 Valikhanov street, Almaty, 050013, Kazakhstan
JSC “Kazakh-British Technical University”, School of Chemical Engineering, 59 Tole bi street, Almaty, 050000, Kazakhstan
Abai Kazakh National Pedagogical University, 13 Dostyk avenue, Almaty, 050013, Kazakhstan
JSC “Institute of Chemical Sciences named after A.B. Bekturov”, 106 Valikhanov street, Almaty, 050013, Kazakhstan
Kaunas University of Technology, Department of Polymer Chemistry and Technology, K. Donelaičio St. 73, Kaunas, 44249, Lithuania
JSC “Institute of Chemical Sciences named after A.B. Bekturov”
JSC “Kazakh-British Technical University”
Abai Kazakh National Pedagogical University
JSC “Institute of Chemical Sciences named after A.B. Bekturov”
Kaunas University of Technology
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