摘要
采用纳米TiO_2光催化降解酸性嫩黄。当进水浓度为20mg/L时,通过降解效率的比较得出反应的最佳条件为：TiO_2的投加量600mg/L,pH值为原水3．56,宜选择紫外光作为光源。实验还发现,酸性嫩黄的光催化降解动力学符合Langmiur-Hinshelwood动力学模型,并求得反应速率常数k=0．36mg/L·min,表观吸附平衡常数K=0．0169L/mg。
The nano-TiO2 catalysts was used to degrade acid light yellow .When the initial concentration was 20mg/L, through the comparison of the degradation efficiency, studies show that the optimum adding dosage of TiO2 was 600mg/L, the best reaction pH was the initial pH 3.56, and the ultraviolet ray should be chosen to be the lamp-house. Studies also show that the kinetic of the degradation of acid light yellow can be expressed by the Langmiur-Hinshelwood model, and the reaction rate constant k=0.36 mg/L-min, the observed adsorption equilibrium constant K=0.0169 L/mg.
出处
《净水技术》
CAS
2006年第3期59-61,70,共4页
Water Purification Technology
关键词
TIO2
光催化氧化
酸性嫩黄
动力学
TiO2, photocatalytic oxidize ,acid light yellow ,kinetic
