Pic, Jean-Stéphane and Manero, Marie-Hélène and Monneyron, Pierre and Debellefontaine, Hubert Coupled selective adsorption and ozonation for non biodegradable COD removal. (2005) In: 17th Ozone Wold Congress, 2005, 22-25 Aug 2005, Strasbourg, France .
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This paper investigates a new water treatment process based on the combined use of the pollutant adsorption onto a mineral surface, and the ozonation of the adsorbed species. Dioxane has been chosen as a model compound as it is refractory towards ozone alone, and two adsorbents (a high silica zeolite FAU and a mesoporous material M) are tested. Three sets of experiments are shown: pollutant adsorption alone, pollutant ozonation alone and the coupled adsorption/ozonation process. The first results show that FAU is not a well suited adsorbent, as dioxane adsorption itself is weak and, moreover, the coupled process does not induce any benefit. On the other hand, mesoporous material M gives better results, since dioxane removal has been achieved up to 50%. The difference between the two materials is attributed to their catalytic effect: whereas FAU does not react with ozone, M probably decomposes the oxidant, generating free radical species and thus acting as an advanced oxidation process.
|Item Type:||Conference or Workshop Item (Paper)|
|Audience (conference):||International conference proceedings|
|Institution:||Other partners > Ecole Nationale Supérieure de Chimie et de Physique de Bordeaux - ENSCPB (FRANCE)|
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA
French research institutions > Centre National de la Recherche Scientifique - CNRS
Other partners > Université de Bordeaux 1 (FRANCE)
|Deposited By:||Hélène Dubernard|
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