Degradation of 1,4-dioxane in water using TiO2 based photocatalytic and H2O2/UV processes

Heather Coleman, V. Vimonses, G. Leslie, R. Amal

Research output: Contribution to journalArticle

80 Citations (Scopus)

Abstract

1,4-dioxane is a synthetic compound found in industrial effluent and subsequently contaminates water bodies due to its high solubility and high volatility. It is of concern due to its toxic and hazardous nature and has been listed as a class 2B carcinogen. This study involved optimisation of the photocatalytic and H2O2/UVC processes for 1,4-dioxane removal. Different photocatalysts and loadings were investigated for the degradation of low concentrations of 1,4-dioxane in water including a commercial P25, a synthesised magnetic photocatalyst and an immobilised sol–gel system. A commercial catalyst (Degussa P25) was the most efficient. A lifetime study of the sol–gel reactor showed that the coating was stable over the time period studied. The optimum H2O2 concentration in the H2O2/UVC process was found to be 30 ppm. The addition of H2O2 to the photocatalytic process for 1,4-dioxane removal caused a decrease in rate for the commercial P25 photocatalyst and an increase in rate for the lab-made magnetic photocatalyst.
LanguageEnglish
Pages496-501
JournalJournal of Hazardous Materials
Volume146
Issue number3
Early online date20 Apr 2007
DOIs
Publication statusPublished - 31 Jul 2007

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Photocatalysts
gel
Degradation
degradation
Water
carcinogen
Polymethyl Methacrylate
Sol-gels
coating
solubility
Gels
catalyst
water
Carcinogens
Volatilization
Body Water
Poisons
Solubility
Effluents
Coatings

Keywords

  • 1
  • 4-dioxane
  • Titanium dioxide photocatalysis
  • P25
  • Magnetic photocatalyst
  • Immobilised sol–gel system
  • H2O2/UV

Cite this

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title = "Degradation of 1,4-dioxane in water using TiO2 based photocatalytic and H2O2/UV processes",
abstract = "1,4-dioxane is a synthetic compound found in industrial effluent and subsequently contaminates water bodies due to its high solubility and high volatility. It is of concern due to its toxic and hazardous nature and has been listed as a class 2B carcinogen. This study involved optimisation of the photocatalytic and H2O2/UVC processes for 1,4-dioxane removal. Different photocatalysts and loadings were investigated for the degradation of low concentrations of 1,4-dioxane in water including a commercial P25, a synthesised magnetic photocatalyst and an immobilised sol–gel system. A commercial catalyst (Degussa P25) was the most efficient. A lifetime study of the sol–gel reactor showed that the coating was stable over the time period studied. The optimum H2O2 concentration in the H2O2/UVC process was found to be 30 ppm. The addition of H2O2 to the photocatalytic process for 1,4-dioxane removal caused a decrease in rate for the commercial P25 photocatalyst and an increase in rate for the lab-made magnetic photocatalyst.",
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Degradation of 1,4-dioxane in water using TiO2 based photocatalytic and H2O2/UV processes. / Coleman, Heather; Vimonses, V.; Leslie, G.; Amal, R.

In: Journal of Hazardous Materials, Vol. 146, No. 3, 31.07.2007, p. 496-501.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Degradation of 1,4-dioxane in water using TiO2 based photocatalytic and H2O2/UV processes

AU - Coleman, Heather

AU - Vimonses, V.

AU - Leslie, G.

AU - Amal, R.

PY - 2007/7/31

Y1 - 2007/7/31

N2 - 1,4-dioxane is a synthetic compound found in industrial effluent and subsequently contaminates water bodies due to its high solubility and high volatility. It is of concern due to its toxic and hazardous nature and has been listed as a class 2B carcinogen. This study involved optimisation of the photocatalytic and H2O2/UVC processes for 1,4-dioxane removal. Different photocatalysts and loadings were investigated for the degradation of low concentrations of 1,4-dioxane in water including a commercial P25, a synthesised magnetic photocatalyst and an immobilised sol–gel system. A commercial catalyst (Degussa P25) was the most efficient. A lifetime study of the sol–gel reactor showed that the coating was stable over the time period studied. The optimum H2O2 concentration in the H2O2/UVC process was found to be 30 ppm. The addition of H2O2 to the photocatalytic process for 1,4-dioxane removal caused a decrease in rate for the commercial P25 photocatalyst and an increase in rate for the lab-made magnetic photocatalyst.

AB - 1,4-dioxane is a synthetic compound found in industrial effluent and subsequently contaminates water bodies due to its high solubility and high volatility. It is of concern due to its toxic and hazardous nature and has been listed as a class 2B carcinogen. This study involved optimisation of the photocatalytic and H2O2/UVC processes for 1,4-dioxane removal. Different photocatalysts and loadings were investigated for the degradation of low concentrations of 1,4-dioxane in water including a commercial P25, a synthesised magnetic photocatalyst and an immobilised sol–gel system. A commercial catalyst (Degussa P25) was the most efficient. A lifetime study of the sol–gel reactor showed that the coating was stable over the time period studied. The optimum H2O2 concentration in the H2O2/UVC process was found to be 30 ppm. The addition of H2O2 to the photocatalytic process for 1,4-dioxane removal caused a decrease in rate for the commercial P25 photocatalyst and an increase in rate for the lab-made magnetic photocatalyst.

KW - 1

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KW - P25

KW - Magnetic photocatalyst

KW - Immobilised sol–gel system

KW - H2O2/UV

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