Sorption properties of modified montmorillonite for Sb(III) ions

Authors

DOI:

https://doi.org/10.17308/sorpchrom.2025.25/13577

Keywords:

antimony, arsenic, modified montmorillonite, cationic surfactant, magnetite, sorption capacity

Abstract

A composite sorbent based on montmorillonite (Na,Ca)0.33(Al, Mg)2(Si4O10)(OH)2⋅nH2O, containing magnetite nanoparticles and a cationic surfactant - dodecyl dimethyl benzyl ammonium chloride C21H38NCl was characterized by X-ray phase analysis, the specific surface area and porosity of the sorbent were measured, and microscopic studies and electron probe X-ray spectral microanalysis were carried out. The possibility of extracting Sb (III) from aqueous solutions using this sorbent was studied. A comparison of sorption properties with respect to Sb (III) and As (III) ions was carried out. The degree of extraction of Sb (III) on MM:CSAC:Fe3O4 increases with increasing pH and reaches more than 90%, while the degree of extraction of As (III) does not depend on pH and reaches 99%. The Sorption process of Sb (III) on MM:CSAC:Fe3O4, is best described by the Freundlich model. The maximum experimental sorption capacity of MM:CSAC:Fe3O4 in relation to Sb (III) ions is lower than for As (III) and is 2.1 mg/g. The maximum degree of extraction of Sb (III) on MM:CSAC:Fe3O4 from aqueous solutions was observed over a period of 90 minutes. The highest degree of desorption of Sb (III) and As (III) was achieved using 5 M HCl, about 40 and 90%, respectively. The degree of extraction of Sb (III) and As (III) on MM:CSAC:Fe3O4 from the model solution was approximately 70 and 90%, respectively. The reduction in the degree of extraction of Sb (III) and As (III) on MM:CSAC:Fe3O4 was associated with the competing sorption of other ions. MM:CSAC:Fe3O4 can be recommended for use as a sorbent for the preliminary purification of aqueous solutions of complex composition from Sb (III) and As (III).

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Author Biographies

  • Anastasia A. Belozerova, Institute of Metallurgy named after academician N.A. Vatolin, Yekaterinburg, Ural Federal University named after the first President of Russia B. N. Yeltsin, Yekaterinburg

    senior researcher, laboratory of analytical chemistry, Ph.D. (chemistry), Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences, Yekaterinburg, Russian Federation, email: aa_belozerova@mail.ru

  • Denis P. Ordinartsev, Institute of Metallurgy named after academician N.A. Vatolin, Yekaterinburg, Ural Federal University named after the first President of Russia B. N. Yeltsin, Yekaterinburg

    senior researcher, laboratory of heterogeneous processes, Ph.D. (engineering sciences), Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences, Yekaterinburg Russian Federation

  • Nadezhda V. Pechishcheva, Institute of Metallurgy named after academician N.A. Vatolin, Yekaterinburg, Ural Federal University named after the first President of Russia B. N. Yeltsin, Yekaterinburg

    leading researcher, laboratory of analytical chemistry, Ph.D. (chemistry), Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences, Yekaterinburg, Russian Federation

  • Svetlana Kh. Estemirova, Institute of Metallurgy named after academician N.A. Vatolin, Yekaterinburg, Ural Federal University named after the first President of Russia B. N. Yeltsin, Yekaterinburg, Russian Federation

    senior researcher, laboratory of analytical chemistry, Ph.D. (chemistry), Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences, Yekaterinburg, Russian Federation,  email: esveta100@mail.ru

  • Lyubov A. Cherepanov, Institute of Metallurgy named after academician N.A. Vatolin, Yekaterinburg

    researcher, laboratory of disordered systems, Ph.D. (chemistry), Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences, Yekaterinburg, Russian Federation, email: freefly88@mail.ru

  • Konstantin Yu. Shunyaev, Institute of Metallurgy named after academician N.A. Vatolin, Yekaterinburg, Ural Federal University named after the first President of Russia B. N. Yeltsin, Yekaterinburg

    chief researcher of the laboratory of analytical chemistry, doctor of chemical sciences, prof., Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences, Yekaterinburg Russian Federation

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Published

2026-02-11

Issue

Vol. 25 No. 6 (2025): Sorbtsionnye i Khromatograficheskie Protsessy

Section

Статьи

How to Cite

Sorption properties of modified montmorillonite for Sb(III) ions. (2026). Sorbtsionnye I Khromatograficheskie Protsessy, 25(6), 930-941. https://doi.org/10.17308/sorpchrom.2025.25/13577

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