期刊
JOURNAL OF ENVIRONMENTAL SCIENCES
卷 41, 期 -, 页码 59-68出版社
SCIENCE PRESS
DOI: 10.1016/j.jes.2015.05.021
关键词
Adsorption; Ozone; Toluene; VOCs; Zeolite
资金
- Centre National pour la Recherche Scientifique et Technique of Morocco (CNRST)
- Centre National de la Recherche Scientifique of France (CNRS) [SPI 05/13]
- Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT) of Chile
- Fondo Nacional de Desarrollo Cientifico y Tecnologico of Chile (FONDECYT) [1130560]
- Comite de Evaluation-orientation de la Cooperation Scientifique of France (ECOS)
- Comision Nacional de Investigacion Cientifica y Tecnologica of Chile (CONICYT) [C11E08]
In this study, a hydrophobic synthetic zeolite, namely ZSM-5 is chosen as an adsorbent/ catalyst for toluene removal. Experimental results showed that toluene adsorption onto ZSM-5 was favourable, following a Langmuir adsorption isotherm model. ZSM-5 zeolite was regenerated using gaseous ozone at low temperature. Adsorbed toluene was oxidised, releasing mainly CO2 and H2O. Traces of oxidation by-products such as acetic acid and acetaldehyde were formed and remained adsorbed after the oxidativate regeneration with ozone. After four successive cycles of adsorption/ozonation, the adsorption efficiency was not affected (92%-99%). These results showed that volatile organic compound (VOC) removal by adsorption onto ZSM-5 zeolite followed by ozone regeneration could be used as a promising hybrid process for the control of VOC emissions in terms of efficiency. (C) 2015 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
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