Faculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, 3 Seminaryjna Street, 85326, Bydgoszcz, PL, Poland.
Environ Sci Pollut Res Int. 2024 Jan;31(5):7977-7993. doi: 10.1007/s11356-023-31648-5. Epub 2024 Jan 4.
In this study, we present the results of the first comparison of the elimination of toxic Cr(VI) ions, which are hazardous contamination of the environment, from aqueous solutions using ion exchangers (IEs) and polymer materials (PMs) impregnated with D2EHPA or ionic liquids (Cyphos IL 101 and Cyphos IL 104). Sorption of Cr(VI) ions and desorption from the formulated sorption materials were carried out. In comparison, classical solvent extraction was accomplished. Fourier transform infrared-attenuated total reflectance spectroscopy (FTIR-ATR), scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS), and atomic force microscopy (AFM) have been used for characterization of the structure of developed IEs and PMs. The highest efficiency of adsorption of Cr(VI) ions was obtained using PMs with ionic liquids (>82%). Desorption from these materials were also very efficient (>75%). On the contrary, the application of IEs allowed for obtaining the best results of both, sorption and desorption processes when using D2EHPA (75% and 72%, respectively). The application of PMs and IEs is part of the green chemistry, and the conducted elimination of chromium(VI) ions using developed materials allows for the conclusion that they can potentially be used on a larger scale, e.g., for the treatment of industrial wastewater rich in Cr(VI) ions.
在这项研究中，我们首次比较了使用浸渍有 D2EHPA 或离子液体（Cyphos IL 101 和 Cyphos IL 104）的离子交换剂（IE）和聚合物材料（PM）从水溶液中去除有毒 Cr(VI)离子（环境中有害的污染）的结果。进行了 Cr(VI)离子的吸附和解吸。相比之下，完成了经典溶剂萃取。傅里叶变换衰减全反射光谱（FTIR-ATR）、扫描电子显微镜-能量色散光谱（SEM-EDS）和原子力显微镜（AFM）用于表征开发的 IE 和 PM 的结构。使用含有离子液体的 PM 获得了 Cr(VI)离子的最高吸附效率（>82%）。这些材料的解吸也非常有效（>75%）。相反，应用 IE 时，当使用 D2EHPA 时，吸附和解吸过程都能获得最佳结果（分别为 75%和 72%）。PM 和 IE 的应用是绿色化学的一部分，使用开发的材料进行的铬(VI)离子的去除实验表明，它们有可能在更大的范围内使用，例如，用于处理富含 Cr(VI)离子的工业废水。
