摘要
用溶胶凝胶法将TiO2负载于颗粒活性炭(AC)上,500℃焙烧得到TiO2/AC催化剂,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,光催化氧化处理阿奇霉素废水,并优化工艺参数。结果表明,在TiO2/AC中w(TiO2)=1.24%、pH=4,水力停留时间90 min条件下,阿奇霉素去除率≥94.1%,反应器连续运行240 h催化剂活性无明显下降。
Activated carbon was loaded with TiO2 by sol-gel method, and then calcinated at 500 ℃ under the protection of nitrogen. TiO2/AC was characterized by means of BET, scanning electron microscope（SEM） and XRD. Photocatalytic oxidation of azithromycin with TiOJAC was conducted in a continuous flow reactor with ultraviolet lamp as illuminant. The results show that the removal rate of azithromycin was not less than 94. 1% under the conditions of w （TiO2 ） of TiO2/AC = 1.24%, pH = 4 and hydraulic retention time 90 min. After 240 hours＇ continuous running, the catalytic activity of TiOJAC exhibited no obvious decline.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2013年第3期328-332,共5页
Fine Chemicals
基金
河北省高校重点学科建设项目资助~~
关键词
TiO2
活性炭
光催化氧化
阿奇霉素
水处理技术与环境保护
TiO2
activated carbon
photo catalytic oxidation
azithromycin
water treatment technologyand environmental protection
