Faculté des Sciences appliquées
Faculté des Sciences appliquées

Advanced photocatalytic oxidation processes for micropollutant elimination in municipal and industrial water

Mertes, Alexander ULiège
Promotor(s) : Lambert, Stéphanie ULiège
Date of defense : 6-Sep-2018/7-Sep-2018 • Permalink :
Title : Advanced photocatalytic oxidation processes for micropollutant elimination in municipal and industrial water
Translated title : [fr] Procédés d'oxydation avancée photocatalytique pour l'élimination de micropolluants dans des eaux municipales et industrielles
Author : Mertes, Alexander ULiège
Date of defense  : 6-Sep-2018/7-Sep-2018
Advisor(s) : Lambert, Stéphanie ULiège
Committee's member(s) : Wolfs, Cédric ULiège
Job, Nathalie ULiège
Vreuls, Christelle 
Language : English
Number of pages : 80
Keywords : [en] TiO2 photocatalysis, micropollutant elimination, oxidative treatment
Discipline(s) : Engineering, computing & technology > Chemical engineering
Name of the research project : Assessment of Advanced Photocatalytic Oxidation process for Micropollutant Elimination in Municipal and Industrial Waste Water Treatment Plants (AOPTi)
Institution(s) : Université de Liège, Liège, Belgique
Degree: Master en ingénieur civil en chimie et science des matériaux, à finalité spécialisée
Faculty: Master thesis of the Faculté des Sciences appliquées


[en] Since pollutants that cannot be degraded by conventional wastewater treatment techniques are a problem of increasing importance nowadays, a lot of research is focused on finding solutions to resolve this problem. A promising technology in this field is TiO2 photocatalysis, which is studied more in detail in this work. TiO2-based photocatalysts, in which silver is used as a dopant, were synthesized by the sol-gel technique. Then, thin films of these sols were deposited onto microscope slides by dip-coating and crystallization of these films was achieved in the subsequent calcination step. For these photocatalysts, the effects of different silver fractions, different fractions of the commercial photocatalyst Evonik P25, different calcination parameters, and different supports (glass or steel) were compared. For this purpose, the photocatalysts were characterized by profilometry, X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), and nitrogen adsorption-desorption. In addition to these characterizations, the efficiency of the photocatalysts was compared by ozonation-photocatalysis combined degradation tests, performed on solutions containing 10 model pollutants. It was found that some of these model pollutants, which could not be degraded by ozonation only, could be degraded by combined ozonation-photocatalysis treatment. The best degradation results were obtained for photocatalyst films consisting of TiO2 doped with 2 wt.% of silver and 20 wt.% of the commercial photocatalyst Evonik P25.



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  • Mertes, Alexander ULiège Université de Liège > Master ingé. civil chim. & sc. mat., à fin.


Committee's member(s)

  • Wolfs, Cédric ULiège Université de Liège - ULiège > Department of Chemical Engineering > Department of Chemical Engineering
    ORBi View his publications on ORBi
  • Job, Nathalie ULiège Université de Liège - ULiège > Department of Chemical Engineering > Ingéniérie électrochimique
    ORBi View his publications on ORBi
  • Vreuls, Christelle CELABOR
  • Total number of views 36
  • Total number of downloads 5

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