Experimental and model comparisons of H2O2 assisted UV photodegradation of Microcystin-LR in simulated drinking water

被引：25
|
作者：
Li, Lei [1 ]
Gao, Nai-yun [1 ]
Deng, Yang [2 ]
Yao, Juan-juan [1 ]
Zhang, Ke-jia [1 ]
Li, Hai-jun [3 ]
Yin, Di-di [1 ]
Ou, Hua-se [1 ]
Guo, Jian-wei [1 ]
机构：
[1] Tongji Univ, State Key Lab Pollut Control & Resource Reuse, Shanghai 200092, Peoples R China
[2] Univ Puerto Rico, Dept Civil Engn & Surveying, Mayaguez, PR 00681 USA
[3] China Univ Geosci, Fac Mat Sci & Chem Engn, Wuhan 430074, Peoples R China
来源：
JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE A | 2009年 / 10卷 / 11期
关键词：
Microcystin-LR (MC-LR); Hydrogen peroxide assisted ultraviolet (UV/H2O2) process; Hydroxyl radical; Reaction kinetics; Photochemical degradation; HYDROGEN-PEROXIDE; CYANOBACTERIAL TOXINS; UV/H2O2; PROCESS; OXIDATION; DEGRADATION; RADIATION; TOXICITY; DECOMPOSITION; DESTRUCTION; OZONATION;
D O I：
10.1631/jzus.A0820642
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The degradation of Microcystin-LR (MC-LR) in water by hydrogen peroxide assisted ultraviolet (UV/H2O2) process was investigated in this paper. The UV/H2O2 process appeared to be effective in removal of the MC-LR. MC-LR decomposition was primarily ascribed to production of strong and nonselective oxidant-hydroxyl radicals within the system. The intensity of UV radiation, initial concentration of MC-LR, MC-LR purity, dosages of H2O2, the initial solution pH, and anions present in water, to some extent, influenced the degradation rate of MC-LR. A modified pseudo-first-order kinetic model was developed to predict the removal efficiency under different experimental conditions.
引用
收藏
页码：1660 / 1669
页数：10
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