Degradation of Microcystin-RR by Combination of UV/H_2O_2 Technique  

作　　者：Rui Ping QIAO Yong Min MA Xin Hua QI Nan LI Xiang Can JIN Qi Shan WANG Yuan Yi ZHUANG 

机构地区：[1]College of Environmental Science and Engineering, Nankai University, Tianjin 300071 2Centers of Disease Control and Prevention of Tianjin, Tianjin 300011 [2]Centers of Disease Control and Prevention of Tianjin, Tianjin 300011 [3]Chinese Research Academy of Environmental Sciences, Beijing 100012

出　　处：《Chinese Chemical Letters》2005年第9期1271-1274,共4页中国化学快报（英文版）

摘　　要：The experiments were performed to investigate the degradation of microcystins in order to assess the effectiveness and feasibility of UV/H2O2 system for the disinfection of water polluted by microcystins. The influence factors such as H2O2, pH and UV light intensities were investigated respectively. Degradation of microcystin-RR （MC-RR） could be fitted by either the pseudo-first-order or second-order rate equations. This homogenous system could significantly enhance the degradation rate due to the synergetic effect between UV and H2O2. The degradation mainly followed the mechanism of direct photolysis and .OH oxidation reactions. Experimental results showed that 94.83% of MC-RR was removed under optimal experimental conditions and the UV/H2O2 system provided an alternative to promote the removal of microcystins in drinking water supplies.The experiments were performed to investigate the degradation of microcystins in order to assess the effectiveness and feasibility of UV/H2O2 system for the disinfection of water polluted by microcystins. The influence factors such as H2O2, pH and UV light intensities were investigated respectively. Degradation of microcystin-RR （MC-RR） could be fitted by either the pseudo-first-order or second-order rate equations. This homogenous system could significantly enhance the degradation rate due to the synergetic effect between UV and H2O2. The degradation mainly followed the mechanism of direct photolysis and .OH oxidation reactions. Experimental results showed that 94.83% of MC-RR was removed under optimal experimental conditions and the UV/H2O2 system provided an alternative to promote the removal of microcystins in drinking water supplies.

关 键 词：MICROCYSTIN-RR DEGRADATION KINETICS UV/H2O2 photo-oxidation 

分 类 号：O625.56[理学—有机化学]