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Plasma Chemistry and Plasma Processing

, Volume 39, Issue 1, pp 125–142 | Cite as

Removal of Toluene from Air Using a Cycled Storage-Discharge (CSD) Plasma Catalytic Process

  • Mohammad Sharif Hosseini
  • Hassan Asilian MahabadiEmail author
  • Rasoul Yarahmadi
Original Paper
  • 78 Downloads

Abstract

Cycled storage-discharge (CSD) air-plasma catalytic process was used for removing toluene from simulated 40% humid air. The different catalytic activities of HZSM-5 and Ag/HZSM-5 catalysts were entered in a dielectric barrier discharge reactor in two-layer form. The experiments were conducted with different filling layout of HZSM-5 and Ag/HZSM5. It is found that the catalysts filling layout, wt% of Ag load on the Ag/HZSM5 layer, the amount of stored toluene at the storage phase, and the discharge gas flow rate were the main factors that could affect the performance of plasma catalytic oxidation of the stored toluene. The performance was maximized when the catalyst-filling layout was 0.5 g HZSM5, followed 0.5 g 5.2 wt% g/HZSM5, and the discharge air flow rate was 1 l/min. When the stored toluene in the storage phase was 77% of toluene adsorbing breakthrough capacity of the first layer catalyst, close to 100% of the stored toluene was oxidized, and so the carbon balance and the CO2 selectivity reached to ~ 100% with no significant O3 and NOx observed in the outlet. By optimizing the storage and discharge period and discharge gas flow, the electrical energy yield and the performance of toluene oxidation were maximized and the energy consumption was minimized.

Graphical Abstract

Keywords

Plasma catalysis Toluene removal Ag/HZSM-5 catalyst Dielectric barrier discharge (DBD) Cycled storage–discharge (CSD) 

Notes

Acknowledgments

The authors gratefully acknowledge the financial support provided by the Tarbiat Modares University.

Compliance with Ethical Standards

Conflicts of interest

The authors declare that there is no conflict of interests regarding the publication of this paper.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Mohammad Sharif Hosseini
    • 1
  • Hassan Asilian Mahabadi
    • 1
    Email author
  • Rasoul Yarahmadi
    • 2
  1. 1.Department of Occupational Health Engineering, Faculty of Medical SciencesTarbiat Modares UniversityTehranIran
  2. 2.Department of Occupational Health Engineering, School of Public HealthIran University of Medical SciencesTehranIran

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