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자료유형
학술저널
저자정보
저널정보
한국대기환경학회 한국대기환경학회지(국문) 한국대기환경학회지 제21권 제4호
발행연도
2005.8
수록면
431 - 438 (8page)

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In order to apply the photocatalytic decomposition of aromatic VOCs, adsorbent prepared from MSWI fly ash was coated by TiO₂ solution to endow with photo-catalytic function. The effects of coating number, existence of light source and the type of TiO₂ solution used for coating were examined. Adsorbent coated with amorphous TiO₂ solution showed higher adsorptivity than adsorbent coated with crystal TiO₂ solution. Without light source, breakthrough curve of photo-catalyst absorbent for VOCs removal was similar to that of absorbent made from MSWI fly ash. On the other hand, breakthrough time was enlarged with light source and total removal efficiency of benzene and toluene was also increased. It can be explained as photo-decomposition effect of TiO₂ photocatalyst.
Total removal efficiency of benzene and toluene was increased according to the increase of coating number with light source. It was due to the effect of adsorption and photo reaction of photo-catalytic adsorbent. But total removal efficiency of benzene was lower than that of toluene. Because benzene was removed more effectively than toluene by adsorption, but photo-decomposition effect of toluene was more high than benzene.

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