期刊
DALTON TRANSACTIONS
卷 50, 期 48, 页码 18016-18026出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1dt03020e
关键词
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资金
- King Saud University, Riyadh, Saudi Arabia [RSP-2021/141]
- Guangdong Province Universities and Colleges Pearl River Scholar Fund [4SG21006G]
- Guangdong Basic and Applied Basic Research Foundation [2019A1515110260, 2021A1515011616]
- Featured Innovation Project of Guangdong Province [2019KTSCX052, 2019KTSCX053]
- Special Funds for Scientific Technological Innovation of Undergraduates in Guangdong Province [pdjh2021a0227, pdjh2021a0223]
- Key Scientific Research Project of Colleges and Universities of Education Department of Guangdong Province [20202ZDZX2046, 2021ZDZX2052]
A magnetic biocomposite was designed and synthesized to remove antibiotics from effluents, showing a high removal efficiency for norfloxacin. The adsorbent exhibited easy separation from the aqueous solution due to its magnetic nature.
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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