Photocatalytic destruction of geosmin using novel pelleted titanium dioxide.

Bellu, Edmund; Lawton, Linda A.; Robertson, Peter K.J.

Abstract

Geosmin is produced by cyanobacteria and actinomycetes in surface waters. It causes undesirable earthy off-flavours in freshwater fish and is a major concern for the drinking water industry. This paper presents the first published study on the use of the novel pelleted TiO2 photocatalyst, Hombikat K01/C, for the removal of geosmin from water. TiO2 in pelleted form eliminates the requirement for the separation of the catalyst from the water following treatment which is normally the case with the widely used powdered catalysts. A laboratory reactor was designed to limit system loss since the compound adsorbs to a wide range of surfaces. Initial concentration, aeration rate and irradiation were evaluated. It was found that degradation of geosmin followed the Langmuir- Hinshelwood model. Elevated aeration had no effect on the photocatalytic removal of geosmin, but increasing irradiation was found to increase degradation rates. The catalyst proved effective within 10 min under optimum conditions.

Citation

BELLU, E., LAWTON, L.A. and ROBERTSON, P.K.J. 2008. Photocatalytic destruction of geosmin using novel pelleted titanium dioxide. Journal of advanced oxidation technologies [online], 11(2), pages 384-388. Available from: https://doi.org/10.1515/jaots-2008-0225

• Journal Article Type: Article
• Acceptance Date: May 14, 2008
• Online Publication Date: Nov 30, 2016
• Publication Date: Aug 31, 2008
• Deposit Date: Apr 16, 2010
• Publicly Available Date: Apr 16, 2010
• Journal: Journal of advanced oxidation technologies
• Print ISSN: 1203-8407
• Electronic ISSN: 2371-1175
• Publisher: De Gruyter
• Peer Reviewed: Peer Reviewed
• Volume: 11
• Issue: 2
• Pages: 384-388
• DOI: https://doi.org/10.1515/jaots-2008-0225
• Public URL: http://hdl.handle.net/10059/483