The effect of operational parameters on the photocatalytic degradation of humic acid

Fiona L Palmer, Brian R Eggins, Heather Coleman

Research output: Contribution to journalArticle

79 Citations (Scopus)

Abstract

This work investigated the potential of semiconductor photocatalysis for the treatment of drinking water. More specifically it determined the effect of the following operational parameters on the adsorption, rate of initial degradation, and mineralisation of Aldrich humic acid solutions: concentration, temperature, oxygen, light intensity, and pH.The kinetics of humic acid degradation were found to be complex due to the heterogeneity and high molecular weight of these compounds. Models which are often applied to semiconductor photocatalysis did not fit; the high adsorption of humic acid on the titanium dioxide surface needed to be taken into account.
LanguageEnglish
Pages137-143
JournalJournal of Photochemistry and Photobiology A: Chemistry
Volume148
Issue number1-3
Early online date4 Mar 2002
DOIs
Publication statusE-pub ahead of print - 4 Mar 2002

Fingerprint

Humic Substances
Photocatalysis
degradation
Degradation
acids
Semiconductor materials
Adsorption
drinking
adsorption
titanium oxides
Potable water
Drinking Water
Titanium dioxide
luminous intensity
molecular weight
Molecular weight
Oxygen
Kinetics
kinetics
oxygen

Keywords

  • Humic acid
  • Semiconductor photocatalysis
  • Operational parameters

Cite this

Palmer, Fiona L ; Eggins, Brian R ; Coleman, Heather. / The effect of operational parameters on the photocatalytic degradation of humic acid. 2002 ; Vol. 148, No. 1-3. pp. 137-143.
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The effect of operational parameters on the photocatalytic degradation of humic acid. / Palmer, Fiona L; Eggins, Brian R; Coleman, Heather.

Vol. 148, No. 1-3, 04.03.2002, p. 137-143.

Research output: Contribution to journalArticle

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