Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Comparison of the Mercury Removal Efficiency using TiO2 Powder under Various Light Sources

다양한 광원하에서의 TiO2에 의한 수은제거 효율비교

  • Lee, Yong-Gyu (Department of Chemical Engineering, Yonsei University) ;
  • Lee, Tai-Gyu (Department of Chemical Engineering, Yonsei University) ;
  • Kim, Woo-Sik (Department of Chemical Engineering, Yonsei University)
  • 이용규 (연세대학교 화학공학과) ;
  • 이태규 (연세대학교 화학공학과) ;
  • 김우식 (연세대학교 화학공학과)
  • Received : 2004.11.02
  • Accepted : 2004.12.30
  • Published : 2005.02.28
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Abstract

In this study, mercury was removed by $TiO_2$ using fluorescent light and sunlight, instead of UV lamps. A reactor was specially designed to increase the $TiO_2's$ exposure to the light source and to make the rotational speed constant. The contacting surface area between mercury and adsorbents was increased by packing the adsorption bed with mixture of $TiO_2$ and glass beads. The mercury removal efficiency was more than 99% under all light sources tested in this study. The mercury removal efficiency was more than 99% under the fluorescent light or sunlight which is harmless and cheap or free.

자외선을 대체하여 형광등이나 자연광(햇빛)을 이용하여 $TiO_2$로 수은제거 실험을 수행하였다. 반응기는 내부의 $TiO_2$가 광원에 최대한 노출되도록 디자인하였으며 회전할 수 있게 하였다. 반응기 내부에 $TiO_2$와 유리비드를 섞어 넣어 기상수은과 흡착제와의 접촉면적을 최대화하였다. 광촉매가 가장 활성을 잘 보이는 UV black light뿐 아니라 실험에 사용된 모든 광원에서 99% 이상의 수은제거효율을 보였다. 인체에 무해하고 경제성이 좋은 형광등이나 태양광하에서도 99% 이상의 수은제거효율을 얻었다.

Keywords

References

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