Photocatalytic degradation of 17-beta-oestradiol on immobilised TiO2

Heather Coleman, BR Eggins, JA Byrne, FL Palmer, E King

Research output: Contribution to journalArticle

Abstract

Micro-molar concentrations of aqueous 17-beta-oestradiol were 98% destroyed in 3.5 h by photocatalysis over the titanium dioxide powder immobilised on Ti-6Al-4V alloy. The concentration of oestradiol was determined by HPLC with fluorescence detection. The degradation kinetics were fitted to a Langmuir-Hinshelwood model with k(S) = 4.4 x 10(-2) mu mol dm(-3) min(-1) and K(S) = 0.347 dm(3) mu mol(-1). The pseudo-first-order rate constant (1.57 x 10(-2) min(-1)) was in line with the 50% degradation time of 40 min. The apparent quantum yield per electron was phi'(e) = 0.41%. The effect of pH on the initial rate of degradation was similar to that reported for phenol. (C) 2000 Elsevier Science B.V. All rights reserved.
Original languageEnglish
Pages (from-to)L1-L5
JournalAPPLIED CATALYSIS B-ENVIRONMENTAL
Volume24
Issue number1
Publication statusPublished - Jan 2000

Keywords

  • titanium dioxide
  • oestrogen
  • photocatalysis
  • water treatment

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