Decomposition of Dimethyl Phthalate in an Aqueous Solution by Ozonation with TiO2/Al2O3 Catalysts

• Main Authors: Da-Cheng Hsieh, 謝大成
• Other Authors: Yi-Hung Chen
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/09637546482944507805

碩士 === 國立高雄應用科技大學 === 化學工程系碩士班 === 96 === Abstract This study investigates the enhanced O3 and O3/UV processes of dimethyl phthalate (DMP) with TiO2/Al2O3 catalysts. The TiO2/Al2O3 catalysts were prepared by the impregnation method. Semibatch ozonation experiments are performed under various reaction conditions to examine the effects of the initial DMP concentration, TiO2/Al2O3 catalysts on the decomposition of DMP. The mineralization efficiency of DMP can be efficiently promoted with the presence of the TiO2/Al2O3 catalysts in O3 treatments. The catalytic ozonation process is also advantageous for the utilization efficiency of fed ozone especially in the late ozonation period. Furthermore, the correlation between removal percentage of the total organic carbons (TOC) and the mole ratio of ozone consumed to the DMP treated (mol mol-1) is obtained. Consequently, the results evaluate the flexibility of ozonation system combined with the TiO2/Al2O3 catalysts for the removal of DMP and provide the useful information in engineering application.