A15 光触媒含有霧を利用したガス状汚染物質の分解に対する諸因子影響の調査

概要

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Various types of gaseous pollutants exist in indoor spaces. Many researchers have carried out extensive studies about ozone and photocatalytic techniques using titanium dioxide (TiO_2) for removal of gaseous pollutants. Although this technique can effectively decompose organic gaseous pollutants, such as volatile organic compounds (VOCs), to CO and CO_2, it has some problems of the appropriate humidity to obtain high removal ratio and generation of considerable soluble intermediates as by-products. Ultrasonic atomization is a very useful technique to produce fine liquid particles of a diameter range below 10μm. In this study, TiO_2 powder was contained in a fine water mist as a suspension by ultrasonic atomization to obtain both effects of photocatalysis and effective capture of water-soluble decomposition intermediates. This ultrasonic mist including photocatalyst was named "UMP". Photocatalitic degradation and mineralization rate of toluene which is a model VOC gas was investigated to clarify the effectiveness of UMP method and the optimal condition of TiO_2 amount in the water.
日本ソノケミストリー学会の論文
2006-10-27