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按摩尔比SiO2:TBAOH(四丁基氢氧化铵):H2O=1:0.35:53水热合成了MEL分子筛,并以机械研磨法制备了Fe-MEL分子筛催化剂,对其进行了表征,研究了其催化H2O2降解染料废水的性能,考察了染料废水初始浓度、pH值、催化剂投加量、H2O2用量、反应时间对降解效果的影响.结果表明,在染料浓度30mg/L及pH6、催化剂投加量3.75g/L和30%(ω)H2O2加入量37.5mL/L、反应时间2.5h的优化条件下,染料废水脱色率达97.8%.
The zeolites were synthesized by hydrothermal synthesis of MEL zeolite with molar ratio of SiO2: TBAOH (tetrabutylammonium hydroxide): H2O = 1: 0.35: 53. The Fe-MEL molecular sieve catalyst was prepared by mechanical grinding method. H2O2 degradation of dye wastewater, the effects of initial concentration of dye wastewater, pH value, catalyst dosage, H2O2 dosage and reaction time on the degradation were investigated.The results showed that under the conditions of dye concentration 30mg / L and pH6, catalyst dosage 3.75 Under the optimized conditions of g / L and 30% (ω) H2O2 addition of 37.5mL / L and reaction time of 2.5h, the decolorization rate of dye wastewater reached 97.8%.