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

Lei Li; Nai Yun Gao; Yang Deng; Juan Juan Yao; Ke Jia Zhang; Hai Jun Li; Di Di Yin; Hua Se Ou; Jian Wei Guo

doi:10.1631/jzus.A0820642

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

Lei Li, Nai Yun Gao, Yang Deng, Juan Juan Yao, Ke Jia Zhang, Hai Jun Li, Di Di Yin, Hua Se Ou, Jian Wei Guo

Earth and Environmental Studies

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27 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	1660-1669
Number of pages	10
Journal	Journal of Zhejiang University: Science A
Volume	10
Issue number	11
DOIs	https://doi.org/10.1631/jzus.A0820642
State	Published - 2009

Keywords

Hydrogen peroxide assisted ultraviolet (UV/H O) process
Hydroxyl radical
Microcystin-LR (MC-LR)
Photochemical degradation
Reaction kinetics

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10.1631/jzus.A0820642

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

abstract = "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.",

keywords = "Hydrogen peroxide assisted ultraviolet (UV/H O) process, Hydroxyl radical, Microcystin-LR (MC-LR), Photochemical degradation, Reaction kinetics",

author = "Lei Li and Gao, {Nai Yun} and Yang Deng and Yao, {Juan Juan} and Zhang, {Ke Jia} and Li, {Hai Jun} and Yin, {Di Di} and Ou, {Hua Se} and Guo, {Jian Wei}",

year = "2009",

doi = "10.1631/jzus.A0820642",

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T1 - Experimental and model comparisons of H2O2 assisted UV photodegradation of Microcystin-LR in simulated drinking water

AU - Li, Lei

AU - Gao, Nai Yun

AU - Deng, Yang

AU - Yao, Juan Juan

AU - Zhang, Ke Jia

AU - Li, Hai Jun

AU - Yin, Di Di

AU - Ou, Hua Se

AU - Guo, Jian Wei

PY - 2009

Y1 - 2009

N2 - 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.

AB - 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.

KW - Hydrogen peroxide assisted ultraviolet (UV/H O) process

KW - Hydroxyl radical

KW - Microcystin-LR (MC-LR)

KW - Photochemical degradation

KW - Reaction kinetics

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SP - 1660

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JO - Journal of Zhejiang University: Science A

JF - Journal of Zhejiang University: Science A

IS - 11

ER -

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

Abstract

Keywords

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