Korean Chemical Engineering Research, Vol.43, No.1, 170-175, February, 2005
다양한 광원하에서의 TiO2에 의한 수은제거 효율비교
Comparison of the Mercury Removal Efficiency using TiO2 Powder under Various Light Sources
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초록
자외선을 대체하여 형광등이나 자연광(햇빛)을 이용하여 TiO2로 수은제거 실험을 수행하였다. 반응기는 내부의 TiO2가 광원에 최대한 노출되도록 디자인하였으며 회전할 수 있게 하였다. 반응기 내부에 TiO2와 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.
In this study, mercury was removed by TiO2 using fluorescent light and sunlight, instead of UV lamps. A reactor was specially designed to increase the TiO2’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 TiO2 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.
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