Synergistic Sorption of Gallium(III) and Scandium(III) Ions by the Interpolymer System of Poly(Acrylic Acid)/Poly(4-vinylpyr-idine) Hydrogels: Kinetics, Selectivity, and Mechanism.

Bakytgul Totkhuskyzy, Talkybek Jumadilov, Khuangul Khimersen, Arailym Akhmetova, Józef Haponiuk, Juozas Grazulevicius

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Article in Molecules (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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6 authors.

Bakytgul TotkhuskyzyBekturov Institute of Chemical Sciences, 106 Valikhanov Str., Almaty 050010, Kazakhstan.

Talkybek JumadilovBekturov Institute of Chemical Sciences, 106 Valikhanov Str., Almaty 050010, Kazakhstan.

Khuangul KhimersenBekturov Institute of Chemical Sciences, 106 Valikhanov Str., Almaty 050010, Kazakhstan.ORCID 0000-0002-5138-5997

Arailym AkhmetovaSchool of Chemical Engineering, Kazakh-British Technical University, 59 Tole bi Str., Almaty 050000, Kazakhstan.

Józef HaponiukDepartment of Polymer Technology, Gdansk University of Technology, 11/12 Gabriela Narutowicza, 80-233 Gdansk, Poland.ORCID 0000-0001-6377-7050

Juozas GrazuleviciusDepartment of Polymer Chemistry and Technology, Kaunas University of Technology, 73 K. Donelaičio Street, 44249 Kaunas, Lithuania.

Funding

Science Committee of the Ministry of Science and Higher Education of the Republic of Kazakhstan BR27101179

6 · The paper itself

Abstract

Selective recovery of critical metals such as gallium and scandium from dilute, multicomponent process streams remains challenging due to their low concentrations and complex matrices. Here we investigate a remotely interacting intergel system based on crosslinked poly(acrylic acid) (hPAA) and poly(4-vinylpyridine) (hP4VP) hydrogels across seven mass ratios (6:0-0:6) for sorption of Ga(III) and Sc(III) from binary sulfate solutions. Inductively coupled plasma optical emission spectroscopy shows that mutual activation of the weak polyacid/polybase pair markedly enhances metal uptake, with maximum sorption degrees of 73.17% for Ga(III) at hPAA:hP4VP = 3:3 and 56.00% for Sc(III) at 2:4, corresponding to distribution coefficients up to 2726.7 mL g

Indexed as

gallium(III) sorptionhydrometallurgyintergel hydrogelsLangmuir isothermpoly(4-vinylpyridine)poly(acrylic acid)scandium(III) sorptionselective separation

Identifiers

PMID42796608

DOI10.3390/molecules31183324

PMCPMC13609558

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