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Dénitratation de l'eau potable en réacteur catalytique membranaire et photocatalytique

Abstract : In this work the catalytic reduction of nitrates in water was investigated in various types of reactors (slurry, photocatalytic and membrane). The effective catalyst for this reduction is a bimetallic catalyst, comprised of a noble metal such as Pd associated with a metal promoter such as Cu. This catalyst deposited on TiO2 powder was studied in a conventional slurry reactor and showed a catalytic activity comparable with literature results. Higher performances were obtained by photocataysis when the same reactor was irradiated withe UV light. In the presence of formic acid, used as sacrificial agent, the formation of nitrite is inhibited. For the study in a contactor membrane reactor, several membranes were prepared. Various porous supports were studied : titanium and alumina oxides, with three pore diameter : 5,10 and 25 nm. [...]
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Submitted on : Tuesday, April 28, 2009 - 2:38:45 PM
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  • HAL Id : tel-00379384, version 1



Najah Wehbe. Dénitratation de l'eau potable en réacteur catalytique membranaire et photocatalytique. Catalyse. Université Claude Bernard - Lyon I, 2008. Français. ⟨tel-00379384⟩