Heavy Metal Ions(II) Sorption by a Cellulose-Based Sorbent Containing Sulfogroups
Tatiana Nikiforova,
Vladimir Kozlov,
Pavel Razgovorov,
Natalia Politaeva,
Ksenia Velmozhina,
Polina Shinkevich,
Valentina Chelysheva
Affiliations
Tatiana Nikiforova
Department of Food Technology and Biotechnology, Ivanovo State University of Chemistry and Technology, Sheremetievskiy Avenue, 7, Ivanovo 153000, Russia
Vladimir Kozlov
Department of Chemistry and Technology of Higher Molecular Compounds, Ivanovo State University of Chemistry and Technology, Sheremetievskiy Avenue, 7, Ivanovo 153000, Russia
Pavel Razgovorov
Institute of Civil and Transport Engineers, Yaroslavl State Technical University, Moskovsky Prosp., 88, Yaroslavl 150023, Russia
Natalia Politaeva
Institute of Civil Engineering, Peter the Great St. Petersburg Polytechnic University, Saint-Petersburg 195251, Russia
Ksenia Velmozhina
Institute of Civil Engineering, Peter the Great St. Petersburg Polytechnic University, Saint-Petersburg 195251, Russia
Polina Shinkevich
Institute of Civil Engineering, Peter the Great St. Petersburg Polytechnic University, Saint-Petersburg 195251, Russia
Valentina Chelysheva
Institute of Civil Engineering, Peter the Great St. Petersburg Polytechnic University, Saint-Petersburg 195251, Russia
This article concerns the effect of the chemical modification of short flax fiber on its sorption properties for heavy metal ions. The main purpose of the modification was to achieve the oxidation of flax cellulose with sodium metaperiodate to form dialdehyde cellulose. Additionally, the research shows the subsequent interaction of dialdehyde cellulose with 1-amino-8-hydroxynaphthalene-3,6-disulfonic acid and its transformation into a derivative capable of forming chelate complexes with heavy metal ions. Additionally, this article presents the results of equilibrium and kinetics studies of the sorption of Cu(II), Cd(II), and Fe(II) ions from aqueous solutions by primary and modified cellulose sorbents. SEM spectra indicate changes in the surface structure of the modified sorbents compared to the original one. IR spectra show the appearance of amino- and sulfogroups in short flax fibers in the process of their modification. The research revealed the efficiency of the method and the possibility of its use for the purification of aqueous solutions from heavy metal ions in industrial processes.
