Photocatalytic degradation of toluene in a staged fluidized bed reactor using TiO2/silica gel

Hsiu Po Kuo*, Shang Wen Yao, An Ni Huang, Wan Yi Hsu

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

11 Scopus citations

Abstract

Relatively high concentration toluene is photocatalytically degraded in a multi-stage fluidized bed reactor continuously. The fluidizing media are titanium dioxide deposited silica gel particles, which are prepared by the doping sol-gel method. The effects of the Ti/Si atomic ratio, the inlet gas flow rates, and the number of the stages on the toluene removal efficiency were evaluated. The highest toluene removal efficiency is obtained when the fluidizing media are with the Ti/Si atomic ratio of 1.25. The apparent reaction orders are 0.4-0.5 for the single-stage system and 0.7 for the two-stage system, respectively. With an inlet toluene concentration of 1,000 ppm, a relative humidity of 30% and a volumetric flow rate of 10 L/min, the removal efficiency of toluene at the steady state is as high as 80% and is maintained in the 6-hr experimental time.

Original languageEnglish
Pages (from-to)73-80
Number of pages8
JournalKorean Journal of Chemical Engineering
Volume34
Issue number1
DOIs
StatePublished - 01 01 2017

Bibliographical note

Publisher Copyright:
© 2017, Korean Institute of Chemical Engineers, Seoul, Korea.

Keywords

  • Fluidized Bed
  • Multi-stage
  • Photocatalytic Degradation
  • Toluene

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