Abstract
The sorption properties of the MnO2/mechanically activated graphite composite with respect to As(III) compounds were studied. The static sorption capacity relative to As(III) compounds of the MnO2/mechanically activated graphite composite was 22.7 mg g–1, which exceeds the sorption properties of MnO2. The effect of solution pH in the range of 1–5, sorbent dose, and sorption time on the recovery of As(III) compounds was studied. It is shown that the process of As(III) sorption on the composite is described by the Freundlich model. The MnO2/mechanically activated graphite composite can be recommended for the removal of As(III) compounds from aqueous solutions.
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ACKNOWLEDGMENTS
The authors are grateful to Ph.D. Ural Federal University M.A. Mashkovtsev for measurements of the specific surface area of the samples.
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The work was carried out according to the state order of the IMET Ural Branch of the Russian Academy of Sciences (no. 122013100200-2) using the equipment of the Central Collective Use Center “Ural-M.”
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A.A. Belozerova: study of sorption properties, processing of the results of sorption studies, review of literature; N.V. Pechishcheva: development of a method for the synthesis of a sorbent, synthesis of a sorbent; S.Kh. Estemirova: X-ray phase analysis; E.V. Sterkhov: conducting microscopic studies and electron probe X-ray spectral analysis; K.Yu. Shunyaev: formulation of research problems.
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Translated from Zhurnal Prikladnoi Khimii, No. 4, pp. 501–508, March, 2022 https://doi.org/10.31857/S0044461822040119
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Belozerova, A.A., Pechishcheva, N.V., Estemirova, S.K. et al. Sorption Properties of the Manganese(IV) Oxide/Mechanically Activated Graphite Composite with Respect to As(III) Compounds. Russ J Appl Chem 95, 561–567 (2022). https://doi.org/10.1134/S1070427222040127
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DOI: https://doi.org/10.1134/S1070427222040127