Photocatalytic degradation of indole in UV/TiO2: optimization and modelling using the response surface methodology (RSM) |
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Authors: | Smail Merabet Didier Robert Jean-Victor Weber Mohammed Bouhelassa Smail Benkhanouche |
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Institution: | 1. Laboratoire d’hydraulique appliquée et environnement, Université de Béjaia, Route de Targa-Ouzzemour, Beja?a, Algeria 2. Laboratoire de Chimie et de Méthodologie pour l’Environnement (EA 3471), Université Paul Verlaine-Metz, rue Victor Demange, 57500, Saint-Avold, France 3. Département de chimie industrielle, Université de Constantine, Constantine, Algeria 4. Département du tronc commun de SETI, Université de Béjaia, route de Targa-Ouzzemour, Beja?a, Algeria
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Abstract: | The aim of our research is to apply experimental design methodology to the optimization of photocatalytic degradation of indole
present in wastewater. Heterogeneous photocatalysis for the oxidation of organic biorecalcitrant pollutants in water is an
environmental promising method. We used the response surface methodology (RSM) for the modelization and optimization of the
photodegradation of indole in the presence of titanium dioxide. The effect of indole concentration, UV intensity and stirring
speed on the yield of indole degradation was determined. According to the mathematic optimization of the process, the optimum
point when 100% of degradation is achieved is given by the following values: UV intensity = 250 W/m2, stirring speed = 536.36 tr/min and initial indole concentration = 10.10 mg/l. |
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