Features of Sorption and Proton-Desorption of Heavy Metals (M2+) from Aqueous Solutions by Biopolymers
- Authors: Kozlov V.A.1, Nikiforova T.E.1
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Affiliations:
- Ivanovo State University of Chemical Technology
- Issue: Vol 51, No 4 (2019)
- Pages: 250-253
- Section: Article
- URL: https://journal-vniispk.ru/0015-0541/article/view/236069
- DOI: https://doi.org/10.1007/s10692-020-10088-8
- ID: 236069
Cite item
Abstract
Several features of the sorption and proton-desorption mechanisms of heavy metals (M2+) from aqueous solutions of acids and native salts (cellulose, chitosan, keratin) by modified biopolymers with acidic (Cell–COOH), salt (–OOC–W–NH3+), amine (CS–NH2), and other sorption sites were examined. Sorption isotherms of metal cations from their aqueous salt solutions (pH < 7) by biopolymers were described well in terms of the Langmuir model. The distributions of Cu2+, Fe2+, Ni2+, Zn2+, and Cd2+ in the heterophasic system H2O–H2SO4–MSO4–biopolymer were linear functions of the solution acidity in logarithmic coordinates log \( \left({K}_{D{\mathrm{M}}^{2+}}\right) \) vs. pH with tan α ≈ 0.5.
About the authors
V. A. Kozlov
Ivanovo State University of Chemical Technology
Author for correspondence.
Email: kozlov@isuct.ru
Russian Federation, Ivanovo
T. E. Nikiforova
Ivanovo State University of Chemical Technology
Email: kozlov@isuct.ru
Russian Federation, Ivanovo
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