期刊
JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE A
卷 10, 期 11, 页码 1660-1669出版社
ZHEJIANG UNIV
DOI: 10.1631/jzus.A0820642
关键词
Microcystin-LR (MC-LR); Hydrogen peroxide assisted ultraviolet (UV/H2O2) process; Hydroxyl radical; Reaction kinetics; Photochemical degradation
资金
- National Key Technologies Supporting Program of China during the 11th Five-Year Plan Period [2006BAJ08B06]
- National Major Project of Science & Technology Ministry of China [2008ZX07421-002]
- Shanghai Science & Technology Commission Key Scientific & Technological Project, China [072312001]
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.
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