UV/TiO2/Fenton体系催化氧化降解罗丹明B的研究

研究在紫外光照射下,Fenton试剂在纳米级TiO2催化作用下氧化降解罗丹明B的处理效果及机理,分别研究初始反应溶液的pH值、反应时间、FeSO4投加量、H2O2溶液投加量、反应温度、TiO2投加量对处理效果的影响,确定了最优反应条件。对于100 mg/L,500 mL的罗丹明B溶液,当TiO2的投加量为0.03g,18mol/L FeSO4的加入量为5 mL,30%H2O2溶液的加入量为1.7 mL,反应溶液pH值为3时,罗丹明B的去除率随着反应温度的升高而升高,最高去除率达100%。

Degradation of Rhodamine B by UV/TiO2/Fenton Catalytic Oxidation System

Fenton reagent was used to degrade rhodemine B in the printing and dyeing water under the ultra-violet light in this paper.The results indicated that 0.03 g TiO2,5 mL 18 mmol/L FeSO4,1.7 mL 30%H2O2 added to 500 mL,100 mg/L rhodamine B solution were the optimum condition.The reaction rate was accelerated with the increasing of temperature.The higher the temperature was,the faster the reaction rate was,and the total removed rate could reach 100%.