Photocatalytic destruction of geosmin using novel pelleted titanium dioxide


Autoria(s): Bellu, Edmund; Lawton, Linda A.; Robertson, Peter K J
Data(s)

01/07/2008

Resumo

<p>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 Ti0<sub>2</sub> photocatalyst, Hombikat K01/C, for the removal of geosmin from water. Ti0<sub>2</sub> 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. </p>

Identificador

http://pure.qub.ac.uk/portal/en/publications/photocatalytic-destruction-of-geosmin-using-novel-pelleted-titanium-dioxide(7af9377a-d3c9-4e57-9fc8-33bb9a567846).html

http://www.scopus.com/inward/record.url?scp=61849174098&partnerID=8YFLogxK

Idioma(s)

eng

Direitos

info:eu-repo/semantics/restrictedAccess

Fonte

Bellu , E , Lawton , L A & Robertson , P K J 2008 , ' Photocatalytic destruction of geosmin using novel pelleted titanium dioxide ' Journal of Advanced Oxidation Technologies , vol 11 , no. 2 , pp. 384-388 .

Palavras-Chave #/dk/atira/pure/subjectarea/asjc/1600/1606 #Physical and Theoretical Chemistry
Tipo

article