Removal of Fluoroquinolone Antibiotics by Chitosan–Magnetite from Aqueous: Single and Binary Adsorption

In this research, chitosan–magnetite composites (CS-MNPs) were successfully synthesized using a rapid and easy technique. The materials characterized by FTIR, XRD, EDX, TEM, VSM, BET methods. removal of the antibiotics ciprofloxacin (CFX) levofloxacin (LFX) from aqueous solutions CS-MNPs adsorbent was investigated. influencing factors in single adsorption system studied, including pH (1–11), initial concentration (2.5–15.0 mg/L), contact time (0–120 min), dosage (5–50 mg/L). experiment data analyzed pseudo-first-order pseudo-second-order kinetic models. isotherms studied fitting experimental to Langmuir, Freundlich, Temkin results indicated that CFX LFX consistent with kinetics model, Langmuir isotherm model. Binary systems (CFX: LFX) ratios 1:0, 1:0.5, 1:1.0, 1:1.5, 1:2.0 also studied. absorbed simultaneously solution. presence second component solution reduced first component’s ability adsorb. process binary followed competition After four regenerations, CS-MNPS exhibited stability well reusable. Studies on actual samples showed could effectively remove FQs those samples, treatment efficiency above 98%.