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Decomposition of formic acid in a photocatalytic reactor with a parallel array of four light sources
Author(s) -
Wang Shinpon,
Shiraishi Fumihide,
Nakano Katsuyuki
Publication year - 2002
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.640
Subject(s) - formic acid , photocatalysis , aqueous solution , decomposition , materials science , titanium dioxide , glass tube , chemical engineering , chemistry , catalysis , tube (container) , chromatography , composite material , organic chemistry , engineering
The performance of a photocatalytic reactor system with a parallel array of four 6 W 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. © 2002 Society of Chemical Industry