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J Environ Sci (China)

Title:		Application of high silica zeolite ZSM-5 in a hybrid treatment process based on sequential adsorption and ozonation for VOCs elimination
Author(s):		Zaitan H; Manero MH; Valdes H;
Address:		"Laboratoire de Chimie de la Matiere Condensee (LCMC), Faculte des Sciences et Techniques, Universite Sidi Mohamed Ben Abdellah, B.P. 2202, Fes , Maroc. Electronic address: hicham.zaitan@usmba.ac.ma. Universite de Toulouse, INPT, UPS, Laboratoire de Genie Chimique, 4, Allee Emile Monso, F-31030 Toulouse, France; CNRS, Laboratoire de Genie Chimique, F-31030 Toulouse, France. Laboratorio de Tecnologias Limpias (F. Ingenieria), Universidad Catolica de la Santisima Concepcion, Alonso de Ribera 2850, Concepcion, Chile"
Journal Title:		J Environ Sci (China)
Year:		2016
Volume:		20150805
Issue:
Page Number:		59 - 68
DOI:		10.1016/j.jes.2015.05.021
ISSN/ISBN:		1001-0742 (Print) 1001-0742 (Linking)
Abstract:		"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"
Keywords:		Adsorption Air Pollution/*prevention & control Catalysis Environmental Pollutants/*chemistry Oxidation-Reduction Ozone/chemistry Toluene/*chemistry Volatile Organic Compounds/*chemistry Zeolites/*chemistry Ozone Toluene VOCs Zeolite;
Notes:		"MedlineZaitan, Hicham Manero, Marie Helene Valdes, Hector eng Research Support, Non-U.S. Gov't Netherlands 2016/03/13 J Environ Sci (China). 2016 Mar; 41:59-68. doi: 10.1016/j.jes.2015.05.021. Epub 2015 Aug 5"