Sorption of Copper(II) Ions by Apple Pectin Modified with Organic Pharmacophores
- Authors: Sagitova A.F.1, Mudarisova R.K.2, Kukovinets O.S.1
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Affiliations:
- Bashkir State University
- Ufa Institute of Chemistry, Russian Academy of Sciences
- Issue: Vol 92, No 10 (2018)
- Pages: 2039-2043
- Section: Physical Chemistry of Surface Phenomena
- URL: https://journals.rcsi.science/0036-0244/article/view/170173
- DOI: https://doi.org/10.1134/S0036024418100278
- ID: 170173
Cite item
Abstract
The sorption properties of apple pectin, native and modified by pharmacophores (nicotinic, salycilic, 5-aminosalycilic, and anthroic acids), are investigated with respect to copper(II) ions. It is established that the modified pectin materials retain high sorption ability as a result of introducing functional groups into their structure, which can efficiently bond metal ions. Sorption isotherms of Cu2+ ions in the 273–333 K range of temperatures testify to the exothermal character of the process. It is found that the sorption of Cu2+ ions by P-SA, P-AA, and P-5ASA complexes is described by the Langmuir equation; for the P-NA complex, it is described by the Freundlich equation.
About the authors
A. F. Sagitova
Bashkir State University
Email: mudarisova@anrb.ru
Russian Federation, Ufa, 450076
R. Kh. Mudarisova
Ufa Institute of Chemistry, Russian Academy of Sciences
Author for correspondence.
Email: mudarisova@anrb.ru
Russian Federation, Ufa, 450054
O. S. Kukovinets
Bashkir State University
Email: mudarisova@anrb.ru
Russian Federation, Ufa, 450076