超声波强化γ-Al_2O_3催化臭氧氧化法降解2,4-二硝基苯酚  

Degradation of 2,4-dinitrophenol by Ultrasonic Enhanced Catalytic Ozonation with γ-Al_2O_3

作　　者：卢平[1] 

机构地区：[1]广西工业职业技术学院石化系,广西南宁530003

出　　处：《化工环保》2009年第4期312-316,共5页Environmental Protection of Chemical Industry

摘　　要：采用超声波强化γ-Al_2O_3催化臭氧氧化法降解模拟废水中的2,4-二硝基苯酚,考察了超声波对降解反应的强化作用及γ-Al_2O_3加入量、臭氧流量、超声波功率等对2,4-二硝基苯酚降解的影响。实验结果表明:2,4-二硝基苯酚在超声波强化γ-Al_2O_3催化臭氧氧化作用下的降解过程符合一级表观动力学;在2,4-二硝基苯酚质量浓度为20.00 mg/L、γ-Al_2O_3催化剂加入量为1.5 g/L、臭氧流量为61 mg/min、超声波功率为300 W、反应时间为60 min时,2,4-二硝基苯酚的降解率达96.4%。2, 4-dinitrophenol in the simulated wastewater was degraded by ultrasonic enhanced catalytic ozonation with γ-Al2O3. The enhancement effect of ultrasonic wave and the factors affecting the degradation reaction were investigated. The experimental results show that： The degradation of 2,4-dinitrophenol by ultrasonic enhanced catalytic ozonation with γ-Al2O3 accords with the apparent first order reaction; The degradation efficiency of 2,4-dinitrophenol is 96. 4% when the 2, 4- dinitrophenol mass concentration is 20 mg/L, the γ-Al2O3 dosage is 1.5 g/L, the ozone flow is 61 mg/min, the ultrasonic power is 300 W, and the reaction time is 60 min.

关 键 词：Γ-氧化铝 2 4-二硝基苯酚 臭氧 超声波 降解 废水处理 

分 类 号：X703.1[环境科学与工程—环境工程]