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https://hdl.handle.net/2440/60429
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Type: | Journal article |
Title: | Application of H-titanate nanofibers for degradation of Congo Red in an annular slurry photoreactor |
Author: | Chong, M. Jin, B. Zhu, H. Chow, C. Saint, C. |
Citation: | Chemical Engineering Journal, 2009; 150(1):49-54 |
Publisher: | Elsevier Science Sa |
Issue Date: | 2009 |
ISSN: | 1385-8947 1873-3212 |
Statement of Responsibility: | Meng Nan Chong, Bo Jin, H.Y. Zhu, C.W.K. Chow and Chris Saint |
Abstract: | Anatase nanofibers (TiO2-N) were synthesized as photocatalyst for the application in an annular slurry photoreactor (ASP). The unique properties of TiO2-N have facilitated its high reactivity and suitability for water treatment. The influence of operational variables: TiO2-N loading, pH, aeration rate and dye concentration on the photo-degradation kinetics and efficiency to remove a model compound of Congo Red (CR) were investigated. The photo-degradation kinetics of CR followed the Langmuir-Hinshelwood regime at lower pH. The Langmuir adsorption constant, KL-H was determined as 7.695 × 102 dm3 mol-1. The optimal photo-degradation rate of 3.47 × 10-2 mol dm-3 min-1 was achieved at 60 ppm CR, pH 3, aeration rate of 5 dm3 min-1 and TiO2-N loading of 4 g dm-3. Batch settling tests based on Kynch's theory revealed that the TiO2-N photocatalysts could produce a settling velocity of 8.38 × 10-4 ms-1. It was expected that these novel TiO2-N particles can deliver a true engineering solution as an industrial process for photocatalytic water treatment. Crown Copyright © 2008. |
Keywords: | TiO2 Nanofibers Congo Red Annular reactor Photocatalysis Degradation |
Rights: | Crown copyright © 2009 Published by Elsevier B.V. |
DOI: | 10.1016/j.cej.2008.12.002 |
Grant ID: | http://purl.org/au-research/grants/arc/LP0562153 http://purl.org/au-research/grants/arc/LP0562153 |
Published version: | http://dx.doi.org/10.1016/j.cej.2008.12.002 |
Appears in Collections: | Aurora harvest Chemical Engineering publications Environment Institute publications |
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