Nikiforova Tatiana, Kozlov Vladimir, Razgovorov Pavel, Politaeva Natalia, Velmozhina Ksenia, Shinkevich Polina, Chelysheva Valentina
Department of Food Technology and Biotechnology, Ivanovo State University of Chemistry and Technology, Sheremetievskiy Avenue, 7, Ivanovo 153000, Russia.
Department of Chemistry and Technology of Higher Molecular Compounds, Ivanovo State University of Chemistry and Technology, Sheremetievskiy Avenue, 7, Ivanovo 153000, Russia.
Polymers (Basel). 2023 Oct 24;15(21):4212. doi: 10.3390/polym15214212.
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.
本文关注短亚麻纤维的化学改性对其重金属离子吸附性能的影响。改性的主要目的是用过碘酸钠氧化亚麻纤维素以形成二醛纤维素。此外，研究表明二醛纤维素随后与1-氨基-8-羟基萘-3,6-二磺酸相互作用，并转化为能够与重金属离子形成螯合配合物的衍生物。此外，本文还介绍了原生纤维素吸附剂和改性纤维素吸附剂对水溶液中Cu(II)、Cd(II)和Fe(II)离子吸附的平衡和动力学研究结果。扫描电子显微镜光谱表明，与原始吸附剂相比，改性吸附剂的表面结构发生了变化。红外光谱显示，在短亚麻纤维改性过程中出现了氨基和磺酸基团。该研究揭示了该方法的有效性及其在工业过程中用于从水溶液中去除重金属离子的可能性。
