This study corresponds to a PhD thesis with financial funds of Ademe and both firms: TERA Environnement and Naturamole. The aim is to purpose a solution to treat olfactory compounds generated with industrial gas waste, in particular Ethanol and Ethyl hexanoate, with photocatalytic processes. A reactor is developed to treat pollutants crossing through a photocatalytic media, support of catalyst (TiO2) or catalyst and adsorbent (zeolite or activated carbon) in continuous flow. Range of pollutants concentration and moisture used in laboratory conditions are determined in accordance with numerous industrial measures. The dynamic adsorption of media with TiO2 and TiO2 and zeolite shows the poor contribution of zeolite with ethanol and ethyl hexanoate. Ester adsorption is better on TiO2 than that of ethanol. Yoon and Nelson model let suppose that the limitation step for adsorption is the extern mass transfer. Photocatalytic degradation rate of ethanol follows a Langmuir - Hinshelwood kinetic. Design of experiment describes degradation rate of ester. The moisture inhibits the degradation rate of ethanol but with ester, an optimum in water concentration is observed. The best adsorption yields are obtained with media with TiO2 and activated carbon. Yoon and Nelson model points out different limitation steps for ethyl hexanoate and ethanol. With the studied running conditions, photocatalyst media does not seem to lead to a synergy between adsorption on activated carbon and photocatalysis on TiO2. The adsorption under UV light model seems to confirm that adsorption and photocatalysis are two different steps that occur in series.
Coupling study of Adsorption and Photocatalysis for Volatil Organic Compounds degradation