Photocatalytic membrane reactor for degradation of acid red B wastewater
Nano titanium dioxide (TiO2) photocatalyst was prepared by acid-sol method using tetrabutyl titanate and ethanol, which appeared to be anatase by XRD analysis. The wastewater containing azo dye acid red B was then subjected to photocatalytic degradation with the photocatalyst and UV as light source in a slurry photocatalytic membrane reactor. The process included a continues-recirculated suspended photocatalytic reactor and a plate frame membrane separator. At first, the performance of separate photocatalytic process and ultrafiltration (UF) was tested. The adsorption characteristic of the titanium dioxide catalyst was investigated under different pH values. Then the optimal operation condition of the photocatalytic process could be achieved by changing TiO2 dose and initial concentration of the dye. It was found that the degradation of acid red B was followed by first-order kinetics and the efficiency of photocatalysis could be evaluated by the initial reaction rate. Two different kinds of ultrafiltration (UF) membranes (PVDF700 and PAN700) were used in membrane separation and a continues-recirculated suspended photocatalytic membrane reactor was finally set up for wastewater treatment. Performance of ultraviolet, photocatalysis and membrane separation with the coupling effect were investigated and evaluated in detail.
Acid red B Titanium Dioxide Photocatalysis Membrane Reactor
Huabing Jiang Tao Huang Guoliang Zhang Qidong Wang Jinyuan Chen
College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310 Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084
国际会议
The 12th Asian Pacific Confederation of Chemical Engineering Congress(第十二届亚太化工联盟大会暨化工展览会)
大连
英文
2008-08-04（万方平台首次上网日期，不代表论文的发表时间）