Ultrasonic Degradation of Azofuchsine Catalyzed by Nanocrystalline ZnO Carried on Oyster Shell Powder

Ultrasonic degradation of azofuchsine catalyzed by nanocrystalline ZnO carried on oyster shell powder was studied,and effect of various factors were investigated.Result showed that effect of ultrasonic degradation catalyzed by nanocrystalline ZnO was obviously better than that only by nano ZnO or by ultrasonic degradation.The degradation rate of azofuchsine was 90% in 180 min and the elimination rate of COD was close to 90% at ultrasonic frequency of 25 KHz,power input of 50 W,amount of catalyst 800 mg/L,pH 3.0 and the initial dye concentration of 20 mg/L.