超声强化Keggin型Fe-Mo-Zr杂多酸盐降解染料废水  

Study on ultrasonic enhanced Fe-Mo-Zr heteropoly salt with keggin structure degradation of dye acidic-green B(AGB)

作　　者：张治宏[1,2] 王彩花[1,3] 王晓昌[1] 

机构地区：[1]西安建筑科技大学环境与市政工程学院,陕西西安710055 [2]西安工业大学材料与化工学院,陕西西安710032 [3]西安科技大学能源学院,陕西西安710054

出　　处：《化学研究与应用》2009年第4期516-520,共5页Chemical Research and Application

摘　　要：合成了Fe-Mo-Zr杂多酸盐催化剂,并利用红外光谱(IR)和X射线衍射(XRD)对制得的产物进行了表征,研究了Fe-Mo-Zr杂多酸盐超声降解模拟酸性绿B(AGB)染料废水的效果。结果表明,合成的杂多酸盐具有Keggin型结构,催化剂的投加量、染料的初始浓度及初始pH值、超声频率及超声时间都对降解效果产生一定的影响。当染料浓度为10mg/L,催化剂的投加量为0.6g/L时,在pH为5.0的条件下,用40kHz超声辐射60min,降解率最高可达93.18%。通过动力学分析:降解反应符合一级反应动力学模型,速率常数随初始浓度的增加而减小。The Fe-Mo-Zr heteropoly salt was synthesized and characterized by IR and XRDo The ultrasonic degradation efficiency of the acidic-green B dye wastewater with Fe-Mo-Zr heteropoly salt was studied. The results showed that the heteropoly salt was Keggin structure. These factors, such as the amount of the heteropoly salt, the initial concentration and the pH value of the acidic-green B dye wastewater,the ultrasonic frequency and the irradiation time, were all effected the degradation efficiency. When the amount of the heteropoly salt was 0. 6 g/L ,the initial concentration of tile dye wastewater was 10 mg/L,the initial pH value of the wastewater was 5. 0,and the ultrasonic frequency was 40kHz,with ultrasonic irradiation 60rain ,the degradation rate was optimum and up to 93. 18%. After dynamics analysed,the degradation reaction was accord with the first order dynamics model,and the rate constant of the degradation increased with the decreasing of the initial concentration of the acidic-green B.

关 键 词：Fe-Mo-Zr KEGGIN结构 水处理 超声降解 

分 类 号：O614.81[理学—无机化学]