Journal of Industrial and Engineering Chemistry

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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A pilot-scale $TiO_2$ photocatalytic system for removing gas-phase elemental mercury at Hg-emitting facilities

  • Cho, Jae Han (Department of Chemical and Biomolecular Engineering, Yonsei University) ;
  • Eomb, Yujin (YS Institute of Environmental Technology, Engineering Research Park, Yonsei University) ;
  • Jeon, Seok Ho (Department of Chemical and Biomolecular Engineering, Yonsei University) ;
  • Lee, Tai Gyu (Department of Chemical and Biomolecular Engineering, Yonsei University)
  • Published : 2013.01.25
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Abstract

A pilot-scale $TiO_2$ photocatalytic system using common household fluorescent lamps was tested at a real combustion facility for its ability to control $Hg^0$ emissions. An $Hg^0$ removal efficiency of greater than 90% was achieved under optimum conditions. The photocatalytic reaction units connected in series were more efficient than those connected in parallel. Acid components of the flue gas, such as NO and $H_2O$, exhibited significant negative effects on the $Hg^0$ removal efficiency. There was no difference in $Hg^0$ removal efficiency between the systems employing mono-wavelength and tri-wavelength fluorescent lamps, and the efficiency was enhanced by increasing the amount of irradiation.

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