Modi-Red Mud Loaded CoCatalyst Activated Persulfate Degradation of Ofloxacin

As an abundant potentially dangerous waste, red mud (RM) requires a straightforward method of resource management. In this paper, RM catalyst loaded with cobalt (Co-RM) was prepared by the coprecipitation for efficient activation persulfate (PS). Its degradation performance and mechanism ofloxacin (OFL) were investigated. The characterization results scanning electron microscopy, X-ray diffractometer, energy dispersive spectrometer showed successfully onto surface RM, produced could effectively activate PS. Under conditions 15 mg/L OFL, 0.4 g/L Co-RM, 4 PDS, 3.0 pH, 40 °C temperature, maximum removal rate OFL Co-RM/PDS system 80.06%. Free radical scavenging experiments confirmed sulfate radicals main active substances in reaction system. intermediates further identified gas chromatography-mass spectrometry, possible pathway proposed. Finally, relationship between defluorination time described first-order kinetic equation. This work reports economical, environmental solution to use waste provides research basis exploration RM-based catalysts.