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

81 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.
Original languageEnglish
Pages (from-to)137-143
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

Keywords

  • Humic acid
  • Semiconductor photocatalysis
  • Operational parameters

Fingerprint Dive into the research topics of 'The effect of operational parameters on the photocatalytic degradation of humic acid'. Together they form a unique fingerprint.

  • Cite this