Description:
This study aimed to evaluate the relationship between pyrolysis temperature (300–900 ℃), characteristics of swine manure (SM)-derived biochar (BC), and adsorption of levofloxacin (LEV) on SM-derived BC. The surface structure and chemistry of SM-derived BCs were characterized using Brunauer-Emmett-Teller analysis, scanning electron microscopy, Fourier-transform infrared spectroscopy, X-ray diffraction, Raman spectroscopy, and X-ray photoelectron spectroscopy. According to the characteristic analysis, the surface area and graphitization degree of SM-derived BC increased with increasing temperature. The highest adsorption capacity was achieved by BC-900 (158 mg/g), which was higher than that in previous studies and comparable to that of commercial activated carbons. Characterization and adsorption experiment results indicated that pore-filling, π–π stacking interaction, π–π electron donor–acceptor, H-bonding, and hydrophobic interactions play a critical role in the adsorption of LEV on SM-derived BC. Collectively, this study provides information on the potential application of SM-derived BC in the removal of antibiotics