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Removal of volatile organic compounds by heterogeneous ozonation on microporous synthetic alumina silicate

Brodu, Nicolas and Zaitan, Hicham and Manero, Marie-Hélène and Pic, Jean-Stéphane Removal of volatile organic compounds by heterogeneous ozonation on microporous synthetic alumina silicate. (2012) Water Science and Technology, vol. 66 (n° 9). pp. 2020-2026. ISSN 0273-1223

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Official URL: http://dx.doi.org/10.2166/wst.2012.385

Abstract

A hybrid process combining adsorption and ozonation was examined as an alternative treatment for odorous volatile organic compounds (VOCs). Methyl ethyl ketone (MEK) was chosen to study the influence of operating parameters. Two synthetic aluminosilicates (faujasite-Y and ZSM-5) were tested for adsorption and reactivity with ozone. The adsorption equilibrium measurement on both adsorbents showed that adsorption performance depends on temperature but is not sensitive to relative humidity, due to the hydrophobic properties of the materials. Adsorbed VOCs were oxidized at low temperature when ozonated flow was sent to the reactor. Regeneration of the fixed bed was achieved at the same time, releasing mainly CO2 and H2O. Intermediates of oxidation, such as 2,3-butanedione and acetic acid, were identified, leading to incomplete mineralization. The influence of concentration and humidity are discussed. Four successive cycles were tested: after the first adsorption/ozonation cycle, the adsorption efficiency was not affected during subsequent cycles. These results show that the same sample of adsorbent can be used in the treatment process for a long time. Ozonation regeneration is a promising process for VOC removal.

Item Type:Article
Additional Information:Thanks to IWA Publishing. ©IWA Publishing 2012. The definitive peer-reviewed and edited version of this article is published in Water Science and Technology, volume 66, issue 9, pp. 2020-2026, 2012, DOI:10.2166/wst.2012.385 and is available at www.iwapublishing.com
HAL Id:hal-00926358
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
French research institutions > Institut National de la Recherche Agronomique - INRA (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Université Sidi Mohamed Ben Abdellah - USMBA (MOROCCO)
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Deposited By: Vincent GERBAUD
Deposited On:15 Nov 2013 15:36

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