沸石固载TiO2光催化技术处理甲基橙工艺研究

用溶胶-凝胶法制备的沸石固载型光催化剂来降解废水中甲基橙。研究了TiO2负载量、pH值、氧化剂联用等因素对甲基橙降解的影响。结果表明：固载型催化剂对甲基橙溶液的处理效果好；处理100mg／L的甲基橙溶液，当沸石负载量为1．24％，pH=11，曝气量为25mL／s，反应温度为30℃，反应1h后降解率可达98％；以沸石颗粒为载体制备的催化剂，其光催化活性高，不流失，经过60h使用后降解率为94％，且制作工艺简单，可重复使用。

Study on Heterogeneous Photocatalytic Degradation of Methyl Orange Using Zeolite Supported TiO2 Photocatalyst

The degradation of methyl orange were studied using immobilized type photocatalyst prepared by sol-gel method. The influences TiO2- zeolite loading, pH ,oxidants,etc.on the degradation of methyl orange.The results indicated that the catalyst had a high efficiency in photocatalytic oxidizing of methyl orange, the removal yield of methyl orange reached 94% after 1 h,when 100 mg/L methyl orange solution was dealed with, under the conditions of 1.24% of zeolite loading,pH = 11, 25 mL/s of aeration rate, 30℃ of reaction temperature. The photocatalytic activity of catalyst was high, the active materials did not run off, and its manufacture was easy and could be reused.