Photocatalytic degradation of 17β-oestradiol, oestriol and 17α-ethynyloestradiol in water monitored using fluorescence spectroscopy

Heather Coleman, Mohamed I. Abdullah, Brian R. Eggins, Fiona L. Palmer

Research output: Contribution to journalArticle

59 Citations (Scopus)

Abstract

Photocatalytic degradation of the natural oestrogens 17β-oestradiol and oestriol and the synthetic oestrogen 17α-ethynyloestradiol in water were investigated. The reactions were carried out in a quartz coil reactor coated internally with titanium dioxide (Degussa P-25). Degradation by UV light alone was also investigated. Reactions were monitored using fluorescence spectroscopy. The effect of initial concentration and the effect of light intensity on the photocatalysis and photolysis of 17β-oestradiol in water were also investigated. The results showed that photocatalysis and photolysis are capable of degrading all three oestrogens in water. Photocatalysis is much more effective than UV light alone and all reactions follow pseudo first order kinetics. The rate was found to be proportional to the square root of light intensity for photocatalysis of 17β-oestradiol. The relationship between light intensity and the rate of degradation by photolysis is linear up to a point when it starts to level off.
LanguageEnglish
Pages23-30
JournalApplied Catalysis B: Environmental
Volume55
Issue number1
Early online date1 Sep 2004
DOIs
Publication statusE-pub ahead of print - 1 Sep 2004

Fingerprint

Estriol
fluorescence spectroscopy
Photocatalysis
Fluorescence spectroscopy
photolysis
light intensity
Estradiol
Photolysis
Degradation
degradation
Water
Ultraviolet radiation
Estrogens
Estradiol Congeners
water
Quartz
Titanium dioxide
quartz
kinetics
Kinetics

Keywords

  • Photocatalysis
  • Titanium dioxide
  • Photolysis
  • Water treatment
  • Endocrine disrupters
  • 17β-Oestradiol
  • Oestriol
  • 17α-ethynyloestradiol
  • Fluorescence spectroscopy

Cite this

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title = "Photocatalytic degradation of 17β-oestradiol, oestriol and 17α-ethynyloestradiol in water monitored using fluorescence spectroscopy",
abstract = "Photocatalytic degradation of the natural oestrogens 17β-oestradiol and oestriol and the synthetic oestrogen 17α-ethynyloestradiol in water were investigated. The reactions were carried out in a quartz coil reactor coated internally with titanium dioxide (Degussa P-25). Degradation by UV light alone was also investigated. Reactions were monitored using fluorescence spectroscopy. The effect of initial concentration and the effect of light intensity on the photocatalysis and photolysis of 17β-oestradiol in water were also investigated. The results showed that photocatalysis and photolysis are capable of degrading all three oestrogens in water. Photocatalysis is much more effective than UV light alone and all reactions follow pseudo first order kinetics. The rate was found to be proportional to the square root of light intensity for photocatalysis of 17β-oestradiol. The relationship between light intensity and the rate of degradation by photolysis is linear up to a point when it starts to level off.",
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Photocatalytic degradation of 17β-oestradiol, oestriol and 17α-ethynyloestradiol in water monitored using fluorescence spectroscopy. / Coleman, Heather; Abdullah, Mohamed I.; Eggins, Brian R.; Palmer, Fiona L.

In: Applied Catalysis B: Environmental, Vol. 55, No. 1, 01.09.2004, p. 23-30.

Research output: Contribution to journalArticle

TY - JOUR

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AU - Abdullah, Mohamed I.

AU - Eggins, Brian R.

AU - Palmer, Fiona L.

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Y1 - 2004/9/1

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AB - Photocatalytic degradation of the natural oestrogens 17β-oestradiol and oestriol and the synthetic oestrogen 17α-ethynyloestradiol in water were investigated. The reactions were carried out in a quartz coil reactor coated internally with titanium dioxide (Degussa P-25). Degradation by UV light alone was also investigated. Reactions were monitored using fluorescence spectroscopy. The effect of initial concentration and the effect of light intensity on the photocatalysis and photolysis of 17β-oestradiol in water were also investigated. The results showed that photocatalysis and photolysis are capable of degrading all three oestrogens in water. Photocatalysis is much more effective than UV light alone and all reactions follow pseudo first order kinetics. The rate was found to be proportional to the square root of light intensity for photocatalysis of 17β-oestradiol. The relationship between light intensity and the rate of degradation by photolysis is linear up to a point when it starts to level off.

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