摘要
采用正交试验考察初始pH值、铁屑投加量及超声波功率对超声波协同零价铁降解硝基苯的影响大小及确定最佳反应条件,并探讨了降解过程的动力学规律。结果表明,降解率随铁屑投加量及超声波功率的增加而增大,随初始pH值的增加而变化不大。超声波与零价铁联用降解硝基苯具有明显的协同作用,协同因子为4.96,且降解过程符合拟一级反应动力学规律。
The effects of initial p H,iron dosage and ultrasound power on degradation of nitrobenzene were inspected by orthogonal experiment to find the best reaction conditions, and the degradation kinetics was discussed. The results show that the degradation rate increases with the increase of iron dosage and ultrasound power, whereas little change with the increase of initial pH. The synergetic effect of ultrasound combined with zero-valent iron on degradation of nitrobenzene is significant, and cofactor is 4.96. The degradation accords with the pseudo-first-order reac tion kinetics law.
出处
《三峡环境与生态》
2010年第3期11-14,共4页
Environment and Ecology in the Three Gorges
基金
江西省教育厅科学技术研究项目(GJJ10637)
关键词
超声波
零价铁
硝基苯
协同效应
ultrasound
zero-valent iron
nitrobenzene
synergism
