稀土元素Pr辅助的类Fenton试剂氧化法处理染料废水

以靛蓝为目标污染物，采用稀土元素Pr辅助的类Fenton试剂氧化法处理模拟染料废水。制备了双金属氧化物催化剂Fe_2-xPr_xO₃，考察了催化剂中n（Pr）∶n（Fe）、催化剂加入量、初始靛蓝质量浓度、H₂O₂加入量、废水pH对废水脱色效果的影响。实验结果表明：Pr在很大程度上提高了类Fenton反应的效率，废水脱色率得到显著提高；在n（Pr）∶n（Fe）=1∶5、初始靛蓝质量浓度为30 mg/L、催化剂加入量为500 mg/L、H₂O₂加入量为40 mL/L、废水pH为3的最佳工艺条件下，反应50 min时废水脱色率达到92.78%。

Treatment of Dye Wastewater by Pr-assisted Fenton-like Reagent Oxidation Process

Using indigo blue as target contaminant,the simulated dye wastewater was treated by the Pr-assisted Fenton-like reagent oxidation process. The double metal oxide catalyst Fe_2-xPr_xO₃ was prepared. The effects of n(Pr)∶n(Fe),catalyst dosage,initial indigo blue mass concentration,H₂O₂ dosage and wastewater pH on decolorization of the wastewater were investigated. The experimental results show that：The efficiency of Fenton-like reaction is greatly improved by Pr and the decolorization rate of the wastewater is significantly increased；Under the optimum process conditions of n(Pr)∶n(Fe) 1∶5,initial indigo blue mass concentration 30 mg/L,catalyst dosage 500 mg/L,H₂O₂ dosage 40 mL/L,wastewater pH 3 and reaction time 50 min,the decolorization rate of the wastewater is 92.78%.