Fabrication of magnetic ferroferric oxide-based composite for efficiently removing and recycling ciprofloxacin

• Published in: Colloids and surfaces. A, Physicochemical and engineering aspects Physicochemical and engineering aspects, 2024-12, Vol.702, p.135067, Article 135067
• Main Authors: Zheng, Wen-Xiu, Zhang, Yu-Jie, Xu, Yan, Guo, Yuan-Ru, Pan, Qing-Jiang
• Format: Article
• Language: English
• Subjects: Antibiotic contamination; Fe3O4; Mg(OH)2; Recovery; Removal mechanism
• ISSN: 0927-7757
• DOI: 10.1016/j.colsurfa.2024.135067

The extensive use of antibiotics and recklessly discarding have caused serious water pollution. Its controlling and remedying become an urgent problem. With the goal of removing ciprofloxacin hydrochloride (HCIP), a magnetic adsorbent of Fe3O4@Mg(OH)2 was prepared via a facile approach in this work. The structure and morphology were systematically characterized by XRD, SEM, FT-IR and XPS. It is found hexagonal Mg(OH)2 flakes are evenly coating on the surface of Fe3O4. This structured morphology offers Fe3O4@Mg(OH)2 high specify surface area. The composite shows excellent removal performance. It achieves almost 99 % HCIP elimination within 1.5 h. The influence of the dosage of adsorbents, pH and interfering ions and reusability were fully studied. It is shown that the composite can be used in neutral condition and has long serve life. The cost effective synthesis, simple operation, high adsorption rate and long serve life make Fe3O4@Mg(OH)2 wide application for water treatment in a large scale. [Display omitted] •Preparation of Fe3O4@Mg(OH)2 by a simple hydrothermal synthesis with low cost.•Hexagonal Mg(OH)2 flakes wrapped around Fe3O4 spheres offering a large specific area.•Revealing the nature of adsorbed ciprofloxacin hydrochloride by kinetics, isotherm, and thermodynamics.•A very long service life under specific conditions after 16-cycle of ad/de-sorption.•Magnetic property allowing for easily recycling and avoiding the secondary pollution.