ILs-TiO_2光催化性能及其降解含氰废水动力学研究

Photocatalytic Property of ILs-TiO_2 and Degradation Kinetics of CN

以低浓度模拟含氰废水为处理对象,研究了自制ILs-TiO2光催化剂的光催化活性,考察了含氰废水的初始浓度、光催化剂投加量、紫外光照强度等条件对降解效率的影响,并初步探讨了其反应动力学。结果表明,ILs-TiO2光催化剂对氰的光催化降解反应符合一级动力学方程,光催化降解速率随氰的初始浓度增加而降低,催化剂的最佳投加量为300 mg/L(以TiO2计),随着光照强度的增加,降解速率增高。

Photocatalytic activities of the home made ILs-TiO2 were investigated by degradation of CN- solution. Effects of the initial concentration of CN-, amount of photocatalyst and UV light intensity on degradation rate, and degradation kinetics were studied. Results indicated that the photocatalytic degradation of CNdecomposition reaction followed the rule of the first order reaction, the rate of the decomposition was depressed by higher initial concentration of CN-, the optimal amount of photocatalyst was 300 mgTiO2/L, and the rate of decomposition was heightened by increase of UV light intensity.