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  • Title: A new magnetic adsorbent of eggshell-zeolitic imidazolate framework for highly efficient removal of norfloxacin.
    Author: Zhong Y, Chen C, Liu S, Lu C, Liu D, Pan Y, Sakiyama H, Muddassir M, Liu J.
    Journal: Dalton Trans; 2021 Dec 14; 50(48):18016-18026. PubMed ID: 34825686.
    Abstract:
    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 (Fe3O4-ES), generating a new Fe3O4-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.
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