CEITEC-Central European Institute of Technology, Brno University of Technology, Purkyňova 9 656/123, Brno 612 00, Czechia; SCITEG, a.s., Brno, Czechia; Department of Pretreatment and Finishing of Cellulosic based Textiles, Textile Industries Research Division, National Research Centre, 33 EL Buhouth St., Dokki, Giza 12622, Egypt.
CEITEC-Central European Institute of Technology, Brno University of Technology, Purkyňova 9 656/123, Brno 612 00, Czechia; SCITEG, a.s., Brno, Czechia; Faculty of Chemistry, Institute of Materials Chemistry, Brno University of Technology, Purkyňova 464/118, Brno 612 00, Czechia.
Carbohydr Polym. 2020 Apr 15;234:115861. doi: 10.1016/j.carbpol.2020.115861. Epub 2020 Jan 17.
Short staple microfibers (SSM) based on chitosan (CS) or silk fibroin (SF) were fabricated via the wet-rotate-spinning technique and employed to adsorb hexavalent chromium from aqueous solution. Adsorption efficiencies, physicochemical and morphological properties of CS and SF-SSM were systematically investigated and evaluated before and after adsorption of Cr(VI) using different techniques like ATR-FTIR, TGA, XRD, XPS, and SEM. CS and SF-SSM showed removal efficiency (>90 %) toward Cr(VI) ions. Pseudo-second order kinetic and Langmuir isotherm models could describe the Cr(VI) ions uptake process. Considering the inexpensive, sustainability and higher adsorption capacity of CS and SF-SSM hold great promising applications as natural adsorbent materials for removing different hazardous metals from aqueous medium.
基于壳聚糖（CS）或丝素蛋白（SF）的短纤维（SSM）通过湿法旋转纺丝技术制备，并用于从水溶液中吸附六价铬。采用 ATR-FTIR、TGA、XRD、XPS 和 SEM 等不同技术，系统研究和评价了 CS 和 SF-SSM 的吸附效率、物理化学和形态特性，以及在吸附 Cr(VI)前后的变化。CS 和 SF-SSM 对 Cr(VI)离子的去除效率均大于 90%。准二级动力学和 Langmuir 等温模型可以描述 Cr(VI)离子的吸附过程。考虑到 CS 和 SF-SSM 的成本低、可持续性和更高的吸附容量，它们有望作为天然吸附材料，用于从水介质中去除不同的有害金属。
