Determination of key operating conditions for the photocatalytic treatment of olive mill wastewaters

Efthalia Chatzisymeon, Nikolaos P. Xekoukoulotakis, Dionissios Mantzavinos*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The TiO(2)-mediated photocatalytic treatment of olive mill wastewater (OMW) was investigated in a batch type, laboratory scale photoreactor. UV-A irradiation was provided by a 400 W, high pressure mercury lamp and Degussa P25 TiO(2) was used as the catalyst. A factorial design approach was used to study the effect of various operating conditions such as initial organic loading, TiO(2) loading, pH, contact time and the addition of hydrogen peroxide on the conversion of COD and total phenols and experimental models describing the respective removals were developed. Effluent decolorization as well as process efficiency in terms of energy consumption were also evaluated. Finally, the acute ecotoxicity of OMW samples prior to and after photocatalytic treatment was assessed. (C) 2009 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)143-148
Number of pages6
JournalCatalysis today
Volume144
Issue number1-2
Early online date13 Feb 2009
DOIs
Publication statusPublished - 15 Jun 2009
Event5th European Meeting on Solar Chemistry and Photocatalysis - Palermo, Italy
Duration: 4 Oct 20088 Oct 2008

Keywords

  • Olive mill wastewater
  • TiO(2) photocatalysis
  • Factorial design
  • Energy consumption
  • ADVANCED OXIDATION PROCESSES
  • WASTE-WATER OMW
  • DEGRADATION
  • EFFLUENTS
  • REAGENT
  • PHENOLS

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