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Photocatalytic destruction of geosmin using novel pelleted titanium dioxide.

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


Edmund Bellu

Peter K.J. Robertson


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.


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:

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
Public URL


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