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Luciana Pereira, Raquel Pereira, Catarina S. Oliveira, Laura Apostol, Mariana Gavrilescu, Marie-Noëlle Pons, Orfan Zahraa and Maria Madalena Alves UV/TiO2 Photocatalytic Degradation of Xanthene Dyes Photochemistry and Photobiology 89

Article first published online: 5 SEP 2012 | DOI: 10.1111/j.1751-1097.2012.01208.x

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The xanthene dyes erythrosine B and eosin were degraded in a photoreactor combining UV/TiO2. High color and COD removal was obtained. The process was found to be pH dependent with better results under acidic conditions. Batch activity tests under methanogenic conditions showed the high toxicity exerted by the dyes. Detoxification levels of 64 ± 7% and 85 ± 5% were achieved for erythrosine B and eosin, respectively.

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