Kinetics on Norfloxacin Oxidation by Potassium Permanganate

Reaction kinetics of norfloxacin (NOR) oxidation with potassium permanganate in water was studied, meanwhile, the factors influencing the value of K were investigated, such as potassium permanganate dosage, pH value and temperature. The results showed that the oxidation reaction of norfloxacin by potassium permanganate in aqueous solution followed second-order kinetics. When potassium permanganate was excessive, pseudo-first-order rate and concentration of potassium permanganate followed the equation : Kobs = 0.0000296 [KMnO4] - 0.00146. The second-order reaction rate constrant was influenced by pH values. The rate of norfloxacin oxidation by potassium permanganate increased with the increase of the water temperature, and the reaction activation energy was 34.3501kJ•mol-1, which reveals that the oxidation reaction between norfloxacin and potassium permanganate is feasible under usual water treatment condition. Therefore, potassium permanganate is a feasible oxidant which cans removal the norfloxacin quickly and efficiently.