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  5. Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά). ΧΗΜ
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Please use this identifier to cite or link to this item: https://olympias.lib.uoi.gr/jspui/handle/123456789/8819
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dc.contributor.authorCalza, P.en
dc.contributor.authorSakkas, V. A.en
dc.contributor.authorMedana, C.en
dc.contributor.authorBaiocchi, C.en
dc.contributor.authorDimou, A.en
dc.contributor.authorPelizzetti, E.en
dc.contributor.authorAlbanis, T.en
dc.date.accessioned2015-11-24T16:44:36Z-
dc.date.available2015-11-24T16:44:36Z-
dc.identifier.issn0926-3373-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/8819-
dc.rightsDefault Licence-
dc.subjectphotocatalysisen
dc.subjecttio2en
dc.subjectexperimental designen
dc.subjectmineralizationen
dc.subjecttoxicityen
dc.subjectdiclofenacen
dc.subjectpharmaceutical drug diclofenacen
dc.subjectsurface watersen
dc.subjectadvanced oxidationen
dc.subjectnatural-watersen
dc.subjectclofibric aciden
dc.subjectibuprofenen
dc.subjectfateen
dc.subjectphotodegradationen
dc.subjectidentificationen
dc.subjecttoxicityen
dc.titlePhotocatalytic degradation study of diclofenac over aqueous TiO2 suspensionsen
heal.typejournalArticle-
heal.type.enJournal articleen
heal.type.elΆρθρο Περιοδικούel
heal.identifier.primaryDOI 10.1016/j.apcatb.2006.04.021-
heal.identifier.secondary<Go to ISI>://000240893800006-
heal.identifier.secondaryhttp://ac.els-cdn.com/S0926337306001299/1-s2.0-S0926337306001299-main.pdf?_tid=ba4040609ac98a22cad041ca80a9d361&acdnat=1333022780_9027e3ad06661c296cc312c59d6cdc5a-
heal.languageen-
heal.accesscampus-
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείαςel
heal.publicationDate2006-
heal.abstractDiclofenac (2-[2,6'-(dichlorophenyl)amino]phenylacetic acid) is a non-steroidal anti-inflammatory drug used to treat inflammatory and painful diseases of rheumatic and non-rheumatic origin. The present work deals with the photocatalytic transformation of diclofenac, under simulated solar irradiation using titania suspensions as catalyst, to assess the decomposition of the pharmaceutical compound, to identify intermediates, as well as to elucidate some mechanistic details of the degradation. The variation of TiO2 amount and initial diclofenac concentration on the reaction rate, were systematically investigated. The use of the response surface methodology allowed to fit the optimal values of the parameters leading to the degradation of the pollutant. Also, a single polynomial expression modeling the reaction was obtained. Photomineralization of the substrate in terms of chlorine ions release was rather a quick process (within 1 h), while the amino moiety is mainly transformed into NH4+ and in a lesser extend into NO3- ions. Evolution of CO2 (loss of TOC) was found to occur within 2 h of irradiation. LC/MS was brought to bear in assessing the temporal course of the photocatalyzed process. Based on our findings a tentative degradation pathway is proposed for the photocatalytic degradation of diclofenac based on the formation of hydroxy-derivatives before the complete mineralization of the starting molecule. In addition Microtox bioassay (Vibrio fischeri) was employed in evaluating the ecotoxicity of solutions treated by photocatalysis. Results clearly demonstrate the efficiency of the photocatalytic process in the detoxification of the irradiated solution. (c) 2006 Elsevier B.V. All rights reserved.en
heal.publisherElsevieren
heal.journalNameApplied Catalysis B-Environmentalen
heal.journalTypepeer reviewed-
heal.fullTextAvailabilityTRUE-
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