O_3及O_3/H_2O_2降解四溴荧光素的效果研究

Study of O_3 and O_3/H_2O_2 degradation efficiency on eosin

采用O_3及O_3/H_2O_2降解四溴荧光素,考察四溴荧光素初始浓度,O_3相对投加量以及H_2O_2投加量对四溴荧光素降解效果的影响。结果表明:O_3及O_3/H_2O_2降解四溴荧光素的过程均符合一级反应动力学方程;O_3降解四溴荧光素时,设置O_3流量为3.18g/h,四溴荧光素初始质量浓度为10、50、100mg/L,降解10min后四溴荧光素降解率均达到93%以上;O_3相对投加量增大,四溴荧光素降解率升高,但O_3利用率降低;O_3/H_2O_2降解四溴荧光素能增大四溴荧光素降解率,却降低了四溴荧光素降解速率。

Eosin degradation by O_3 and O_3/H_2O_2 was investigated.The effects of eosin initial concentration,relative O_3 dosage and H_2O_2 dosage on eosin degradation were studied.The results showed that eosin degradation by O_3 and O_3/H_2O_2 were both fitted to one order reaction kinetics equation.Eosin degradation efficiency by O_3 was above 93% on the condition of O_3 discharge was 3.18g/h,degradation time was 10 min,and eosin initial mass concentration was 10,50 and 100 mg/L,respectively.The eosin degradation efficiency was increased but O_3 available efficiency was decreased when relative O_3 dosage was increased.The eosin degradation by O_3/H_2O_2 could enhance the eosin degradation efficiency but reduce the degradation rate.