Magnetic Fe2O3/biochar composite prepared in a molten salt medium for antibiotic removal in water

• DOI: 10.1007/s42773-021-00130-1
• Publication Date: 2022-01-20T03:04:50Z
• Authors: Huagen Liang; Chenxi Zhu; Shan Ji; Palanisamy Kannan; Fu Chen
• Keywords: Carbon fibers; Langmuir adsorption model

Abstract The large-scale use of antibiotics is causing serious water pollution problems, and it great significance to develop new technologies remove from water. As an environmentally friendly economical adsorption material, carbon derived biomass a low-cost feasible material for removing in sewage, but the current removal efficiencies are not high enough practical application. In this study, poplar wood chips used as raw magnetic biochar prepared by co-pyrolysis FeCl 3 /CaCl 2 mixed molten salt. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), N -isothermal desorption, photoelectron (XPS) scanning electron microscope (SEM) techniques showed successful synthesis Fe O /bioC composite. In-situ formed makes possess characteristic superparamagnetic, which conducive recycling biochar. Due etching effect salts, rough surface was on /bioC, resulting maximum norfloxacin (NOR) ability up 38.77 mg g −1 at pH 6.0. NOR behavior followed pseudo second order kinetic model equilibrium data best fitted Langmuir model. addition, process thermodynamically spontaneous. results show that reusable has potential rapid efficient antibiotic aqueous solution.