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|Title: ||Photocatalytic destruction of geosmin using novel pelleted titanium dioxide.|
|Authors: ||Bellu, Edmund|
Lawton, Linda A.
Robertson, Peter K. J.
|Issue Date: ||2008|
|Publisher: ||Science & Technology Network, Inc.|
|Citation: ||BELLU, E., LAWTON, L. A., ROBERTSON, P.K.J., 2008.
Photocatalytic destruction of geosmin using novel pelleted
titanium dioxide. Journal of advanced oxidation technologies, 11
(2), pp. 384-388.|
|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
|Appears in Collections:||Journal articles (Pharmacy & Life Sciences)|
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