Remediation of phenol in wastewater by internally illuminated monolith reactor

• Main Authors: Tien-Lun Cheng, 鄭天倫
• Other Authors: Chi-Sheng Wu
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/77387423146780887088

碩士 === 國立臺灣大學 === 化學工程學研究所 === 101 === Phenol is one of the major waster water pollutants in the world and wildly used in dye, resin synethsis industry. In the research, sol-gel prepared TiO2 was coated on the monolith multiple times to form multilayer structure. The catalyst was calcined to transform into anatase state at 500 °C. From SEM images, uniform catalyst layer can be achieved by multiple times of coating. PMMA(Poly(methyl methacrylate)) with caves which can increase the side emission of light were put inside each channel of monolith. The depth of each cave was kept constant by a modified cutter. The end of each fiber contacted with the inner side of the reactor’s stainless steel wall, which was provided as a reflective plane to enhance the light irradiation. From the results of optical fiber illumination experiment, the light intensity can be enhaced for 30.7% for cutted optical fibers. The light source was a 200 W mecury lamp to provide 2 W/cm2 light intensity. The batch reactor’s experimental results showd the best residence time for the internally illuminated monolith reactor system is 180 minutes. TiO2 catalyst shows better performance that Mn loaded TiO2 catalyst. The conversion achieved 0.259 with UVA light intensity of 2 W/cm2 at 25°C.