Effect of the State of Carboxyl Groups of Pectin on the Sorption Binding of Copper Ions
- Authors: Aleeva S.V.1, Chistyakova G.V.1, Lepilova O.V.1, Koksharov S.A.1
-
Affiliations:
- Krestov Institute of Solution Chemistry, Russian Academy of Sciences
- Issue: Vol 92, No 8 (2018)
- Pages: 1583-1589
- Section: Physical Chemistry of Surface Phenomena
- URL: https://journals.rcsi.science/0036-0244/article/view/170098
- DOI: https://doi.org/10.1134/S0036024418080022
- ID: 170098
Cite item
Abstract
The relationship between the molecular structure characteristics of pectin and the sorption equilibrium with a copper solution was evaluated. The chemisorption processes were described using the model of the theory of micropore volume filling. For pectin samples subjected to a cycle of transformations for changing the chemical state of carboxyl groups in the polymer, the decrease in their activity in passing from the unsubstituted state to the calcium-pectate and methoxylated forms was studied. The contribution of the parameters of the chemical structure of pectins to their total copper adsorption capacity was differentiated. The composition–property models were obtained, which allow one to predict and selectively change the level of the metal-binding capacity of pectin-containing sorbents.
About the authors
S. V. Aleeva
Krestov Institute of Solution Chemistry, Russian Academy of Sciences
Author for correspondence.
Email: sva@isc-ras.ru
Russian Federation, Ivanovo, 153045
G. V. Chistyakova
Krestov Institute of Solution Chemistry, Russian Academy of Sciences
Email: sva@isc-ras.ru
Russian Federation, Ivanovo, 153045
O. V. Lepilova
Krestov Institute of Solution Chemistry, Russian Academy of Sciences
Email: sva@isc-ras.ru
Russian Federation, Ivanovo, 153045
S. A. Koksharov
Krestov Institute of Solution Chemistry, Russian Academy of Sciences
Email: sva@isc-ras.ru
Russian Federation, Ivanovo, 153045