Photocatalytic degradation of dye effluent by titanium dioxide pillar pellets in aqueous solution

Li, Yuncang, Zou, L. and Hu, Eric 2004, Photocatalytic degradation of dye effluent by titanium dioxide pillar pellets in aqueous solution, Journal of environmental sciences, vol. 16, no. 3, pp. 375-379.

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Title Photocatalytic degradation of dye effluent by titanium dioxide pillar pellets in aqueous solution
Author(s) Li, Yuncang
Zou, L.
Hu, Eric
Journal name Journal of environmental sciences
Volume number 16
Issue number 3
Start page 375
End page 379
Publisher IOS Press
Place of publication Amsterdam, The Netherlands
Publication date 2004
ISSN 1001-0742
Keyword(s) dyes degradation
photocatalytic reaactions
TiO2 catalyst
Summary Photocatalytic oxidation (PCO) process is an effective way to deal with organic pollutants in wastewater which could be difficult to be degraded by conventional biological treatment methods. Normally the TiO2 powder in nanometre size range was directly used as photocatalyst for dye degradation in wastewater. However the titanium dioxide powder was arduous to be recovered from the solution after treatment. In this application, a new form of TiO2 (i.e. pillar pellets ranging from 2.5 to 5.3 mm long and with a diameter of 3.7 mm) was used and investigated for photocatalytic degradation of textile dye effluent. A test system was built with a flat plate reactor (FPR) and UV light source (blacklight and solar simulator as light source respectively) for investigating the effectiveness of the new form of TiO2. It was found that the photocatalytic process under this configuration could efficiently remove colours from textile dyeing effluent. Comparing with the TiO2 powder, the pellet was very easy to recovered from the treated solution and can be reused in multiple times without the significant change on the photocatalytic property. The results also showed that to achieve the same photocatalytic performance, the FPR area by pellets was about 91% smaller than required by TiO2 powder. At least TiO2 pellet could be used as an alternative form of photocatalyst in applications for textile effluent treatment process, also other wastewater treatment processes.
Language eng
Field of Research 090703 Environmental Technologies
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©IOS Press
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Document type: Journal Article
Collection: School of Engineering and Technology
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