连续流反应器TiO2/AC光催化处理 阿奇霉素废水

Azithromycin wastewater treated in a continuous flow photocatalytic reactor using TiO2/AC as catalyst

摘要:

用溶胶凝胶法将TiO2以凝胶态负载于颗粒活性碳(AC)上，在氮气保护下程序升温至500℃焙烧得到TiO2/AC，用比表面积测定仪（BET）、扫描电镜（SEM）和XRD表征其结构。在连续流反应器中以紫外灯为光源，TiO2/AC为催化剂光催化氧化处理阿奇霉素废水，优化了工艺参数。结果表明：在TiO2/AC中w(TiO2)=1.24%、pH=4，水力停留时间90min条件下，废水中阿奇霉素去除率≥94.1%，反应器连续运行240小时催化剂未出现失活现象。

Abstract:

Activated carbon was loaded by TiO2 in gel state using sol-gel method, and then calcinated at 500℃ under the protection of nitrogen. TiO2/AC was characterized by BET ，scanning electron microscope (SEM) and XRD. Azithromycin wastewater was treated in a continuous flow photocatalytic reactor with ultraviolet lamp as light source and TiO2 / AC as catalyst. The results show that the azithromycin removal rate of the wastewater was not less than 94.1% under the conditions of load of in TiO2 / AC w(TiO2)=1.24%, pH = 4 and hydraulic retention time 90 min. After 240 hours continuous operation, the azithromycin removal rate differs little.