Semnan University of Medical Sciences

Research and Technology Vice Chancellor

Dehdashti, Alireza and KHAVANIN, ALI and REZAEE, ABBAS and ASSILIAN, HASAN (2011) Regeneration of granular activated carbon saturated with gaseous toluene by microwave irradiation. Turkish Journal of Engineering and Environmental Sciences. pp. 49-58.

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    Abstract

    This paper describes laboratory-scale experiments examining the impact of microwave irradiation on the regeneration of granular activated carbon (GAC) exposed to toluene vapor. A stream containing 300 ppm of toluene was passed through the GAC. The saturated adsorbent was treated by microwave irradiation at a heating frequency of 2450 MHz at various power levels to evaporate the adsorbate. The adsorption capacity was evaluated through breakthrough curves and the residue was analyzed by gas chromatography. We found that exposing GAC saturated with toluene under microwave irradiation at 900 W for 15 min could remove the pollutant from the adsorbent effectively. The regeneration efficiency was more than 95% after 5 cycles at higher power levels. The GAC surface area was increased from 1150 m^2/g to 1185 m^2/g over regeneration cycles. We concluded that GAC could be reused after repeated regeneration cycles under microwave irradiation while maintaining its original adsorption capacity and physical properties. Keywords: Toluene vapor, granular activated carbon, adsorption, microwave irradiation, regeneration efficiency

    Item Type: Article
    Subjects: R Medicine > R Medicine (General)
    Divisions: Faculty of Medical Sciences > School of Medicine
    Depositing User: Mr Vahab Moshtaghi
    Date Deposited: 14 Dec 2016 10:46
    Last Modified: 14 Dec 2016 10:46
    URI: http://eprints.semums.ac.ir/id/eprint/598

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