▎ 摘　　要

Ciprofloxacin, an antibiotic of the fluoroquinolone drug class, is often associated with negative impacts on aquatic ecosystems demanding innovative techniques and materials for treatment before discharge. In the present study, bagasse, a potential solid waste was utilised to treat ciprofloxacin by converting it to graphene oxide (GO) using ferrocene reagent as a catalyst by slow thermal pyrolysis. Characterisation of GO by scanning electron microscope (SEM) and high-resolution transmission electron microscope (HRTEM) revealed ultra-thin sheet-like layers, while Raman spectroscopy confirmed its high purity and X-ray diffraction (XRD) confirmed its crystalline nature. The synthesised material, when tested for removal of ciprofloxacin through natural solar irradiated photo-catalysis, showed a maximum 81% degradation following pseudo-second-order kinetics. Mass spectrometry confirmed the fragmentation of the antibiotic into lower molecular weight compounds. Further, a microbiological assay of the degraded products on bacterial strains indicated them to be innocuous. The study depicts a circular economic approach to tackling the solid waste disposal problem and wastewater treatment simultaneously.