310 水吸収を用いた沿道大気浄化システムの検討 : システム効率の向上に関する試み

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Recently, the situation of air pollution centering on an urban area aggravates at the crossing of the trunk road. This paper describes purification system for NO_x and SPM using water adsorption by the bubble column. The system considers that such a local pollution area is a fixed generation source. In this experimental, it is experimented on supersonic wave for minuteness of air bubbles, oxidization of NO on low concentration by Activated Carbon Fiber (ACF) and diffusing cylinder for cutbacks of energy. As a result, supersonic wave aim at the increase in gas-liquid contact area by minuteness of air bubbles fine. Supersonic wave for minuteness is uncertain and used large energy, so the improvement in system efficiency is not expectable. Catalytic oxidation of NO to NO_2 on ACF is not identified, but the effect as adsorbent is done. We recognize that use of the diffusing cylinder improve the system efficiency. But compared with other methods, it is low, and there will be room of research from now on.
2003-06-24