光催化氧化处理二苯胺废水  

Treatment of DPA Wastewater by Fenton Reagent

作　　者：李生彬[1] 于涛[1] 陈强[2] 李剑[1] 

机构地区：[1]兰州交通大学环境与市政工程学院,甘肃兰州730070 [2]兰州大学资源与环境学院,甘肃兰州730000

出　　处：《兰州交通大学学报》2005年第1期70-73,共4页Journal of Lanzhou Jiaotong University

摘　　要：二苯胺(DPA)是一种用量很大的有毒化工原料,本实验使用 TiO2 负载型光催化膜对二苯胺废水进行处理.通过实验考察纳米级催化剂TiO2 粉末用量与催化效率的关系,TiO2 负载催化膜作用下光照时间、pH以及反应温度对二苯胺废水总有机碳(TOC)去除率的影响,通过正交实验设计确定光催化处理二苯胺废水的最佳操作条件.结果表明,随着反应时间的延长,TOC的去除率增大,最佳反应时间为 70 min,之后趋于平衡;增强溶液酸性和碱性都可以加快DPA的降解速度;当 pH为10,反应温度50 ℃时去除率最高,达到99.6 % ,DPA含量降至 0.32mg/L.Since Diphenylamine(DPA) is a kind of material widely applied to chemical engineering,photocatalysis is employed to treat DPA wastewater in this experiment. The effect of photocatalyst dosage of TiO_2 nanometer powder on TOC removal efficiency of wastewater is investigated,also are pH, reaction time,and temperature action with TiO_2 catalyze film. The optimum condition is determined via orthogonal experiment. The results show that the removal efficiency of TOC increases with the rising of reaction time. The optimum reaction time is 70 min,whereafter the removal efficiency of TOC become equilibrium.Acidity or basicity can increase the degradation rate of formaldehyde. The other optimum reaction conditions that pH at 10 and the reaction temperature at 50 ℃ can reach the best removal efficiency of TOC as 99.6%,the PDA content in wastewater is 0.32 mg/L.

关 键 词：二苯胺废水 光催化 TOC 

分 类 号：O643.32[理学—物理化学]