Photocatalytic degradation of aromatic chlorinated compounds using TiO2: Toxicity of intermediates

dc.creatorJardim, WF
dc.creatorMoraes, SG
dc.creatorTakiyama, MMK
dc.date1997
dc.dateJUL
dc.date2014-12-16T11:32:31Z
dc.date2015-11-26T16:55:36Z
dc.date2014-12-16T11:32:31Z
dc.date2015-11-26T16:55:36Z
dc.date.accessioned2018-03-28T23:43:03Z
dc.date.available2018-03-28T23:43:03Z
dc.identifierWater Research. Pergamon-elsevier Science Ltd, v. 31, n. 7, n. 1728, n. 1732, 1997.
dc.identifier0043-1354
dc.identifierWOS:A1997XE04200025
dc.identifier10.1016/S0043-1354(96)00349-1
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/59566
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/59566
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/59566
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1277172
dc.descriptionThe photocatalytic degradation of four chlorinated aromatic compounds, namely pentachlorophenol (PCP), 2,4,-dichlorophenol (2,4,-DCP), 3,5,-dichlorophenol (3,5,-DCP), and 2,3,5,-trichlorophenol (2,3,5,-TCP), was investigated in the presence of an aqueous suspension of TiO2 irradiated with near-UV light. The toxicity of the transient species was compared to that observed for the parent compound. The comparison was carried out by monitoring the inhibition in bacterial respiration (Escherichia coil) by measuring the CO2 in the aqueous culture medium using flow injection analysis (FIA). Only in the case of PCP and 2,3,5,-TCP were the intermediates. identified by HPLC and GC/MS, found to be more toxic than the parent compound. The principal intermediates observed during the photocatalytic oxidation process of PCP were 2,3,5,6,-tetrachloro-1,4,-hydroquinone, 2,3,5,6,-tetrachloro-1,4,-benzoquinone and 2, 3,5,6,-tetrachlorophenol. In the case of 2,3,5,-TCP and 3,5,-DCP, the identified intermediates were 2,3,5,-trichloro-1,4,-hydroquinone and 2,5,dichloro-1,4,-hydroquinone, respectively. The intermediates of 2,4,-DCP were not identified. (C) 1997 Elsevier Science Ltd.
dc.description31
dc.description7
dc.description1728
dc.description1732
dc.languageen
dc.publisherPergamon-elsevier Science Ltd
dc.publisherOxford
dc.publisherInglaterra
dc.relationWater Research
dc.relationWater Res.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectphotocatalysis
dc.subjectTiO2
dc.subjectEscherichia coli
dc.subjectintermediates
dc.subjecttoxicity
dc.subjectchlorophenols
dc.subjectPhotodegradation
dc.subjectWater
dc.subjectIdentification
dc.subjectSuspensions
dc.titlePhotocatalytic degradation of aromatic chlorinated compounds using TiO2: Toxicity of intermediates
dc.typeArtículos de revistas


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