UV/H_2O_2光助氧化降解丽华实军蓝制衣染料(英文)  

Photo-oxidative degradation of levafix navy in UV/H_2O_2 system

作　　者：黄晓霞[1] 刘茹[1] 蔡邦宏[1] 

机构地区：[1]嘉应学院化学与环境学院,广东梅州514015

出　　处：《化学研究与应用》2012年第9期1439-1444,共6页Chemical Research and Application

摘　　要：本文对UV/H2O2光助氧化降解丽华实军蓝制衣染料的效果及其影响因素和动力学进行了研究。结果表明,UV/H2O2对丽华实军蓝染料废液具有很好的处理效果,用量少,处理浓度高,且在发生光助氧化降解的同时还伴随着光分解反应。UV/H2O2体系的光助氧化反应和UV体系的光分解反应均为表观一级反应,前者活化能9.71 kJ.mol-1,指前因子1.61 min-1,后者活化能50.3 kJ.mol-1,指前因子3.88×105min-1。染料溶液初始pH为强碱性(pH=12)时染料降解率最大。The reaction determining parameters and the reaction kinetics of the photo-oxidative degradation of a dye Levafix Navy in the UV/H2O2 system haven been studied. The UV/H2O2 system is highly efficient in degradating Levafix Navy, i. e., a small amount of H2O2 can degrade highly concentrated dye solution. Moreover, the UV photo-decomposition of the dye molecules is found to be concurrent with the photo-oxidative degradation, both of which are apparent first-order reactions. The former reaction has an acti- vation energy of 9.71 kJ · mo1-1 with a pre-exponential factor of 1.61 min-1 ,and the latter has an activation energy of 50. 3 kJ · mol-1 with a pre-exponential factor of 3.88×105 min-1 ,respectively. The dye degradation efficiency peaks when the initial pH of the dye solution is strongly basic（ pH = 12 ）.

关 键 词：双氧水 光降解 丽华实军蓝 反应速率常数 活化能 

分 类 号：O643[理学—物理化学]