Degradation of ciprofloxacin using UV-based advanced removal processes: Comparison of persulfate-based advanced oxidation and sulfite-based advanced reduction processes

In this study, the degradation of ciprofloxacin (CIP) in wastewater was investigated using UV-based sulfate radical advanced oxidation processes (SR-AOP) and reduction (ARP). More specifically, a comparison persulfate process (the UV/PS process) sulfite UV/sulfite made. Considering SR-AOPs, much more efficient than peroxymonosulfate UV/PMS process), with pseudo first order reaction rate constants (kobs) 0.752 0.145 min?1, respectively. For ARPs, most efficient, compared to UV/sulfide UV/dithionite (kobs 0.269, 0.0157 0.0329 respectively). The optimal parameters for both were determined contribution produced reactive species identified. process, maximal CIP found at pH 8, OH SO4? responsible degradation. H eaq? degradation, being predominant 8.5. Although faster be defluorination CIP.