Email this article Sorption behavior of strontium ions in humic acid solutions
- Authors: Volkov I.V.1, Polyakov E.V.1, Denisov E.I.2, Ioshin A.A.3
-
Affiliations:
- Institute of Solid State Chemistry, Ural Branch
- Yeltsin Ural Federal University
- Eksorb Research and Production Enterprise
- Issue: Vol 59, No 1 (2017)
- Pages: 70-78
- Section: Article
- URL: https://journals.rcsi.science/1066-3622/article/view/223733
- DOI: https://doi.org/10.1134/S106636221701009X
- ID: 223733
Cite item
Open Access
Access granted
Subscription Access
Abstract
As shown by distribution, thermodynamic modeling, and dispersion analysis methods, the ability of freshly precipitated humic acid to take up Sr(II) ions is influenced by energy heterogeneity of its sorption sites, characteristic of both natural and synthetic samples. It is manifested in that the distribution coefficient Kd exceeds 1.9 × 104 mL g–1 at Sr(II) concentrations in solutions lower than 20 μg L–1 but is equal to 1.9 × 103 mL g–1 at Sr(II) concentrations higher than 1 mg L–1. In solutions with ultralow Sr(II) concentrations, humic acids exhibit high affinity for the humate complex Sr(HA) and do not interact with the complex Sr(HA)2.
Keywords
About the authors
I. V. Volkov
Institute of Solid State Chemistry, Ural Branch
Email: polyakov@ihim.uran.ru
Russian Federation, ul. Pervomaiskaya 91, Yekaterinburg, 620990
E. V. Polyakov
Institute of Solid State Chemistry, Ural Branch
Author for correspondence.
Email: polyakov@ihim.uran.ru
Russian Federation, ul. Pervomaiskaya 91, Yekaterinburg, 620990
E. I. Denisov
Yeltsin Ural Federal University
Email: polyakov@ihim.uran.ru
Russian Federation, ul. Mira 19, Yekaterinburg, 620002
A. A. Ioshin
Eksorb Research and Production Enterprise
Email: polyakov@ihim.uran.ru
Russian Federation, ul. 8 Marta 5, Yekaterinburg, 620014
Supplementary files
