Adsorption and photocatalytic degradation of phenol over TiO2/ACF
(1. College of Chemical Engineering and Technology,
Taiyuan University of Technology, Taiyuan 030024, China
2. Guangzhou Institute of Energy Conversion,
Chinese Academy of Sciences, Guangzhou 510070, China;
3. Guangdong Key Laboratory of Agricultural Environment Pollution Integrated Control，Guangdong Institute of Eco-Environment and Soil Sciences,
Guangzhou 510650, China)
Taiyuan University of Technology, Taiyuan 030024, China
2. Guangzhou Institute of Energy Conversion,
Chinese Academy of Sciences, Guangzhou 510070, China;
3. Guangdong Key Laboratory of Agricultural Environment Pollution Integrated Control，Guangdong Institute of Eco-Environment and Soil Sciences,
Guangzhou 510650, China)
Abstract: The adsorption and photocatalytic degradation of phenol in water were investigated in a cylindrical borosilicon glass photoreactor with a cooling water jacket using TiO2/ACF as photocatalyst. A 15W UV lamp(254nm) was used as central light source. The effects of the temperature and initial concentration of phenol solution on adsorption and photocatalytic process were studied, and the comparison of adsorption, photolysis and photocatalysis was conducted. The results show that the classical model of Langmuir gives a good description of the adsorption of phenol on TiO2/ACF and low temperature can improve the adsorption of phenol on photocatalyst; increasing temperature can increase the photocatalytic degradation rate of phenol; and the adsorption enhances the photocatalytic removal of phenol.
Key words: phenol; titanium dioxide; activated carbon fiber; adsorption; photocatalysis