Decomposition of gaseous formaldehyde in a photocatalytic reactor with a parallel array of light sources: 2. Reactor performance

Fumihide Shiraishi, Kentaro Toyoda, Hiromitsu Miyakawa

研究成果: ジャーナルへの寄稿記事

23 引用 (Scopus)

抄録

To develop a high-performance photocatalytic reactor for purification of indoor air, the photocatalytic decomposition of gaseous HCHO at a very low concentration is investigated both theoretically and experimentally. In this second paper, a photocatalytic reactor with a parallel array of nine light sources, designed on the basis of the experimental result in the first paper, is applied to the air containing HCHO at an indoor concentration level and the reactor performance is discussed. The experimental result indicates that this photocatalytic reactor can rapidly decompose HCHO toward zero concentration. The reason for this high reactor performance is explained by a mathematical model that takes into consideration a film-diffusional resistance in the neighborhood of the photocatalyst as follows: (1) the reaction field is irradiated with a high light intensity because the distance between the light source and photocatalyst surface is only 6 mm; (2) the rate of decomposition is increased by the UV light that permeates through a glass tube; (3) the film-diffusional resistance is remarkably reduced because of a high linear velocity (709 m min-1).

元の言語英語
ページ(範囲)145-151
ページ数7
ジャーナルChemical Engineering Journal
114
発行部数1-3
DOI
出版物ステータス出版済み - 11 15 2005

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Photocatalysts
formaldehyde
Formaldehyde
Light sources
High intensity light
decomposition
Decomposition
Air
Ultraviolet radiation
Purification
Mathematical models
Glass
indoor air
light intensity
purification
glass
reactor
air

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

これを引用

Decomposition of gaseous formaldehyde in a photocatalytic reactor with a parallel array of light sources : 2. Reactor performance. / Shiraishi, Fumihide; Toyoda, Kentaro; Miyakawa, Hiromitsu.

:: Chemical Engineering Journal, 巻 114, 番号 1-3, 15.11.2005, p. 145-151.

研究成果: ジャーナルへの寄稿記事

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