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  • Performance catalytic ozonation over the carbosieve in the removal of toluene from waste air stream.

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    Author(s) : Samarghandi, M. R.Babaee, S. A.Ahmadian, M.Asgari, G.Shahna, F. G.Poormohammadi, A.

    Author Affiliation : Research Center for Health Sciences and Department of Environmental Engineering, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran.

    Author Email : apoormohammadi000@yahoo.com

    Journal article : Journal of Research in Health Sciences 2014 Vol.14 No.3 pp.227-232 ref.32

    Abstract : Background: Toluene is a volatile organic compound, one of 189 hazardous air pollutants (HAPs) and the most important pollutant found in most industries and indoor environments; owing to its adverse health, toluene must be treated before being released into the environment. Methods: In this research study, a continuous-flow system (including an air compressor, silica gel filters and activated charcoal, impinger, an ozone generation and a fixed bed reactor packed with the carbosieve in size 1.8-2.3 mm, specific surface: 972 m2/g,) was used. This glass reactor was 0.7 m in height; at a distance of 0.2 m from its bottom, a mesh plane was installed so as to hold the adsorbent. Moreover, 3 l/min oxygen passed through this system, 0.43 g/h ozone was prepared. The flow rate of waste airstream was 300 ml/min. The efficiency of this system for removal of toluene was compared under the same experimental conditions. Results: Under similar conditions, performance of catalytic ozonation was better in toluene removal than that of ozonation and carbosieve alone. On average, increasing the removal efficiency was 45% at all concentrations. When carbosieve and ozone come together, their synergistic effects increased on toluene degradation. Conclusions: Catalytic ozonation is a suitable, high-efficient and available method for removing toluene from various concentrations of waste air stream. This process due to the short contact time, low energy consuming and making use of cheap catalysts can be used as a novel process for removing various concentrations of volatile organic compounds.

    ISSN : 2228-7795

    URL : http://jrhs.umsha.ac.ir/.../pdf

    Record Number : 20153045087

    Publisher : School of Public Health, Hamadan University of Medical Sciences

    Location of publication : Hamadan

    Country of publication : Iran

    Language of text : English

    Language of summary : English

    Indexing terms for this abstract:

    Descriptor(s) : adverse effects, air pollutants, air pollution, atmosphere, catalysts, catalytic activity, indoor air pollution, industrial sites, public health, removal, toluene

    Identifier(s) : adverse reactions, atmospheric pollution, volatile organic compounds