Degradation of bisphenol A in wastewater by UV/persulfate/Cu2O

• Main Authors: Mei-Rong Chen, 陳玫榕
• Other Authors: Wen-Shing Chen, Ph.D
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/5k7azd

碩士 === 國立雲林科技大學 === 化學工程與材料工程系 === 105 === Bisphenol A is a common water pollutant which can not be easily degraded. Recently, often using advanced oxidation process (Advanced Oxidation Technology, AOTs) approach to wastewater treatment. The principal active species in such systems are the hydroxyl radical (OH•) and sulfate radicals(SO4• –),both of them are highly oxidizing agent of organic contaminants. In this work, Bisphenol A was degraded using mercury light (253nm). The process at variety of temperature, PH value, concentration of Cu2O, concentration of persulfate and intensity of UV light to explore the impact of Bisphenol A mineralization. And using total organic carbon analyzer to detect hydrogen peroxide production. Each operating parameter would be discovered using the Taguchi's orthogon alarrays Methods the optimal operating conditions would be established. The concentration of Bisphenol A solution is 100 mg / L. The result shows that high temperature could enhance the generation rate of sulfate radical(SO4• –), so it has optimal value at 45℃. The more high-energy ultraviolet light, the more degradation rate of Bisphenol A. There's are optimal value in cuprous oxide and persulfate, excess or less could affect the final results. PH value is the important factor in the system, the PH value is neutral. The scavenging effect was examined by using methanol (MeOH) and ethyl alcohol (EtOH) to identify the reactive radicals in UV/PDS process.The removal of Bisphenol A from water was investigated by the UV/PDS using hydroxyl radicals(OH•) and sulfate radicals(SO4–•) which leads to the oxidative degradation of Bisphenol A. Keywords: Bisphenol A, sulfate radicals, persulfate, ultraviolet light, cuprous oxide