摘要
通过半动态实验,对MnOx/GAC(颗粒活性炭)催化臭氧氧化技术氧化硝基苯的降解效能与动力学规律进行了初步研究。结果表明MnOx/GAC催化臭氧氧化过程对硝基苯具有较高的催化活性,在相同的反应条件下,MnOx/GAC催化臭氧氧化技术对硝基苯的降解效率是单独臭氧氧化的2.4倍。催化剂对硝基苯有一定的吸附作用。MnOx/GAC催化剂的存在提高了臭氧的利用率。MnOx/GAC催化臭氧氧化过程存在着催化剂最佳投量,硝基苯初始浓度与反应速率常数有良好的线性相关性,水质本底对MnOx/GAC催化臭氧氧化效率也有影响。
MnOx/GAC （granular active carbon） catalytic ozonation reacted on nitrobenzene was studied by a semicontinuous flow test. The results showed that MnOx/GAC catalyst exhibited excellent catalytic activity for nitrobenzene degradation. Under the same reaction conditions, the degradation efficiency of MnOx/GAC catalytic ozonation is 2.4 times that of only ozonation alone. The MnOx/GAC catalyst has a certain degree of adsorption of nitrobenzene. In the presence of MnOx/ GAC catalyst, the ozone transfer efficiency can be enhanced. There is an optimum catalyst dosage in the MnOx/GAC catalytic ozonation process, and the initial concentration of nitrobenzene has a good linear correlation with the reaction rate constant. Water background also has some influence on MnOx/GAC catalytic ozonation.
出处
《现代化工》
EI
CAS
CSCD
北大核心
2005年第8期31-34,37,共5页
Modern Chemical Industry
基金
国家自然科学基金资助项目(50378028)
