Degradation of 2-Chlorophenol by Ozone and UV/Ozone processes: The effects of solution composition

• Main Authors: Wang, Liang-Kai, 王亮凱
• Other Authors: Ku, Y.
• Format: Others
• Language: zh-TW
• Published: 1997
• Online Access: http://ndltd.ncl.edu.tw/handle/21472423923649332064

碩士 === 國立台灣工業技術學院 === 化學工程技術研究所 === 85 === The purpose of this research is to investigate the effect of ferrous, copper, bromide and nitrate ions and t-butanol on the decompositionof 2-chlorophenolby Ozone and UV/Oozone processes in aqueoussolution. The experiments were carried out under various pH valuesto investigate the efficiencies of decomposition, dechlorination and mineralization of 2-chlorophenol by Ozone and UV/Ozone processes.The addition of ions had slight influence on the decomposition of 2-chlorophenol by Ozone and UV/Ozone processes. By adding ferrousions would promote the mineralization of organic by UV/O3 processesunder acidic conditions. Organic intermediates were not mineralizedcompletely by Oozne and UV/Ozone processes in alkaline solutions.The kinetic models were found to fit well in modeling the temporal behaviors of reacting species on the decomposition of 2-chlorophenolby O3 and UV/O3 processes. The addition of t-butanol altered the surfacetension of aqueous solutions and promote the decomposition of 2-chlorophenol in both Ozone and UV/Ozone processes, but it couldinhibit the dechlorination under the situation of chemical controlled region.