Guangdong Provincial Key Laboratory of Research and Development of Natural Drugs, and School of Pharmacy, Guangdong Medical University, Guangdong Medical University Key Laboratory of Research and Development of New Medical Materials, Dongguan, 523808, China.
Shenzhen Huachuang Bio-pharmaceutical Technology Co. Ltd., Shenzhen, 518112, Guangdong, China.
Dalton Trans. 2021 Dec 14;50(48):18016-18026. doi: 10.1039/d1dt03020e.
Many effluents contain various antibiotics commonly, where the simultaneous removal of them is a big challenge. In this study, the magnetic biocomposite (eggshell-zeolitic imidazolate framework) was designed and synthesized by green and facile method. Zeolitic imidazolate framework-8 (ZIF-8) particles were stabilized on the surface of magnetic eggshell (FeO-ES), generating a new FeO-ES/ZIF-8 adsorbent, which was also fully characterized using FTIR, XRD, SEM and BET techniques. Thereafter, norfloxacin (NOR) adsorption processes were investigated through different influencing factors (dosage, concentration, pH and temperature). The Langmuir adsorption isotherm could confirm a maximum removal efficiency of 80.13% for NOR. Kinetic studies illustrated that the pseudo-first-order model was in line with the experimental data of the simultaneous removal of NOR. Moreover, the magnetic nature of the adsorbent caused an easy separation from the aqueous solution.
许多废水中通常含有各种抗生素，同时去除它们是一个巨大的挑战。在这项研究中，通过绿色简便的方法设计并合成了磁性生物复合材料（蛋壳-沸石咪唑骨架）。将沸石咪唑骨架-8（ZIF-8）颗粒稳定在磁性蛋壳（FeO-ES）的表面上，生成了一种新型的 FeO-ES/ZIF-8 吸附剂，并通过 FTIR、XRD、SEM 和 BET 技术对其进行了全面表征。此后，通过不同的影响因素（剂量、浓度、pH 值和温度）研究了诺氟沙星（NOR）的吸附过程。Langmuir 吸附等温线可以证实 NOR 的最大去除效率为 80.13%。动力学研究表明，准一级模型与 NOR 同时去除的实验数据相符。此外，吸附剂的磁性使其易于从水溶液中分离。
