Department of Chemistry and Technology of Functional Materials, Faculty of Chemistry, Gdańsk University of Technology, 11/12 Narutowicza Street, 80-233 Gdańsk, Poland.
Institute of Nanotechnology and Materials Science, Faculty of Applied Physics and Mathematics, Gdańsk University of Technology, 11/12 Narutowicza Street, 80-233 Gdańsk, Poland.
J Hazard Mater. 2021 Sep 15;418:126286. doi: 10.1016/j.jhazmat.2021.126286. Epub 2021 Jun 1.
A novel, bio-derived cyclodextrin-based trifunctional adsorbent has been successfully synthesized for efficient, rapid and simultaneous removal of a broad-spectrum of toxic ionic (anionic and cationic dyes) and non-ionic organic pollutants from water. The composition, morphology and the presence of functional groups in the obtained sorption material were characterized by elemental analysis, XRD, SEM, and FTIR spectroscopy. The adsorption results were represented by cationic dye (crystal violet, CV) and endocrine disrupting compound (bisphenol A, BPA) as an adsorbate. The sorption processes of the model pollutants were studied with both kinetic and equilibrium models. The results showed that the sorption was rapid (less than 1 min) and the time evolution could be fitted using a pseudo-second order model. According to Langmuir isotherm model, the maximum adsorption capacities were found at 113.64 and 43.10 mg g for BPA and CV, respectively. The adsorption ability of β-CDPs was kept nearly on the same level after five regeneration cycles. Furthermore, almost complete removal of the pollutants was observed during the treatment of real effluents samples thus the bio-derived, cheap and reusable BAN-EPI-CDP has a promising potential for practical applications.
一种新型的、生物衍生的环糊精基三功能吸附剂已被成功合成，用于从水中高效、快速和同时去除广泛的有毒离子（阴离子和阳离子染料）和非离子有机污染物。通过元素分析、XRD、SEM 和 FTIR 光谱对所得吸附材料的组成、形态和官能团的存在进行了表征。以阳离子染料（结晶紫，CV）和内分泌干扰物（双酚 A，BPA）作为吸附物来表示吸附结果。用动力学和平衡模型研究了模型污染物的吸附过程。结果表明，吸附速度很快（不到 1 分钟），时间演化可以用拟二级模型拟合。根据朗缪尔等温模型，BPA 和 CV 的最大吸附容量分别为 113.64 和 43.10mg/g。β-CDPs 在五次再生循环后保持几乎相同的吸附能力。此外，在处理实际废水样品时观察到污染物几乎完全去除，因此，这种生物衍生的、廉价的和可重复使用的 BAN-EPI-CDP 具有实际应用的巨大潜力。
