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Title: The photocatalytic decomposition of microsystin-LR using selected titanium dioxide materials.
Authors: Liu, Iain
Lawton, Linda A.
Bahnemann, Detlef W.
Liu, Lei
Proft, Bernd
Robertson, Peter K. J.
Keywords: TiO2
Photocatalyst
Cyanotoxin
Microsystin-LR
Issue Date: Jul-2009
Publisher: Elsevier
Citation: LIU, I., LAWTON, L. A., BAHNEMANN, D. W., LIU, L., PROFT, B. and ROBERTSON, P. K. J., 2009. The photocatalytic decomposition of microsystin-LR using selected titanium dioxide materials. Chemosphere, 76 (4), pp. 549-553.
Abstract: Microcystins (cyclic heptapeptides) produced by a number of freshwater cyanobacteria are a potential cause for concern in potable water supplies due to their acute and chronic toxicity. TiO2 photocatalysis is a promising technology for removal of these toxins from drinking water. It is, however, necessary to have a sufficient knowledge of how the catalyst materials cause the degradation of the toxins through the photocatalytic process. The present study reports microcystin degradation products of the photocatalytic oxidation by using a number of commercial TiO2 powder (P25, PC50, PC500 and UV100) and granular (KO1, KO3, TiCat-C, TiCat-S) materials, so aiding the mechanistic understanding of this process. Liquid chromatography–mass spectrometry analysis demonstrated that the major destruction pathway of microcystin for all the catalysts tested followed almost the same pathway, indicating the physical properties of the catalysts had little effects on the degradation pathway of microcystin-LR.
ISSN: 0045-6535
Appears in Collections:Journal articles (Pharmacy & Life Sciences)

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