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Characterization and Evaluation of a Novel Exalting Round-Plate Photocatalytic Reactor

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A novel reactor, the exalting round-plate photocatalytic reactor (ERPPR), was designed and evaluated. Residence time and light intensity distributions were determined by stimulus–response experimentation and an irradiation meter, respectively. The effects of hydraulic loading of the round plate and aeration on the photocatalytic degradation of azo dye were investigated during different conditions. Experimental results show that the ERPPR is intermediate between a completely stirred tank reactor and a plug-flow reactor. Mean hydraulic loadings at different rotational speeds were significantly influenced by the reaction rate for dye decolorization. Photodegradation of the dye, however, was not significantly influenced by the amount of oxygen gas aerated, except when aerating with pure oxygen. Results further indicate that the photoreaction atmosphere of the ERPPR depends on mass transfer between gas and liquid on the round plate. The primary role of aeration is to mix catalyst and solution.
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Keywords: EXALTING ROUND-PLATE PHOTOCATALYTIC REACTOR; HYDRAULIC CHARACTERISTICS; PHOTOCATALYSIS; REACTOR; WATER TREATMENT

Document Type: Research Article

Publication date: 2001-11-01

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    Water Environment Research (WER) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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