Decomposition of formic acid in a photocatalytic reactor with a parallel array of four light sources

Shinpon Wang, Fumihide Shiraishi, Katsuyuki Nakano

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21 Citations (Scopus)


The performance of a photocatalytic reactor system with a parallel array of four 6W blacklight blue fluorescent lamps (wavelength: 300-400 nm) was investigated, based on the decomposition of formic acid in an aqueous solution. An aqueous solution of formic acid (7.8-22.0 gm-3) was recirculated between the photocatalytic reactor and perfectly-mixed flow container. The results show that the UV-light that penetrated through the wall of a glass tube and then passed through the flowing liquid solution accelerated the photocatalytic reaction occurring on the neighboring glass tubes, which greatly contributed to an increase in the reactor activity. This confirms that the arrangement of several light sources in parallel which uses effectively a three-dimensional space can lead to increased reactor activity and an increase in decomposition rates. A significant reduction in the reaction rate due to a film-diffusional resistance in the vicinity of the titanium dioxide film was observed.

Original languageEnglish
Pages (from-to)805-810
Number of pages6
JournalJournal of Chemical Technology and Biotechnology
Issue number7
Publication statusPublished - 2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Chemical Engineering(all)
  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Waste Management and Disposal
  • Pollution
  • Organic Chemistry
  • Inorganic Chemistry


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