Abstract
The results of studying the sorption of d-metal cations (Cu2+, Co2+, and Mn2+) from aqueous solutions of their salts by sorbents based on apple pectin modified with organic pharmacophores (salicylic, anthranilic, 5-aminosalicylic, and nicotinic acids) are presented. The influence of the structure of the introduced pharmacophore into the pectin matrix on the kinetics and thermodynamics of the distribution of d‑metal ions in the aqueous-solution–biopolymer-sorbent heterophase system was determined. An increase in the efficiency of extraction of d-metal ions by pharmacophore-containing pectin sorbents was revealed in comparison with the initial polysaccharide. The optimal conditions for the sorption of Cu2+, Co2+, and Mn2+ ions by the studied sorbents (phase contact time, medium pH, temperature) were selected. A mechanism for the interaction of d-metal ions with a modified pectin sorbent has been proposed.
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ACKNOWLEDGMENTS
Analyses (measurements and calculations) were performed using the equipment of the “Chemistry” Core Facilities Center of the Ufa Institute of Chemistry of the Russian Academy of Sciences and the “Agidel” Regional Core Facilities Center of the Ural Federal Research Center of the Russian Academy of Sciences.
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The article was prepared as part of the implementation of the program of fundamental scientific research of state academies for 2013–2020, state order no. 1021062311391-0-1.4.4.
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Translated by M. Drozdova
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Mudarisova, R.K., Sagitova, A.F. & Kukovinets, O.S. Analysis of Sorption Activity of Apple Pectin Modified with Organic Pharmacophores in Relation to d-Metal Cations (Cu2+, Co2+, and Mn2+). Prot Met Phys Chem Surf 58, 927–934 (2022). https://doi.org/10.1134/S2070205122050173
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DOI: https://doi.org/10.1134/S2070205122050173