Determination of optimum extinction wavelength for paracetamol removal through energy efficient thin film reactor

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dc.authorid0000-0001-6249-5529
dc.authorid0000-0001-7527-6130
dc.authorscopusid25924855400
dc.authorscopusid35176620600
dc.authorscopusid56273926500
dc.authorscopusid6602558250
dc.authorwosidCifci, Deniz Izlen/AAH-3383-2020
dc.authorwosidTolga Tunçal, Dr/AAH-2487-2019
dc.contributor.authorÇifçi, Deniz İzlen
dc.contributor.authorTuncal, Tolga
dc.contributor.authorPala, Ayşegül
dc.contributor.authorUslu, Orhan
dc.date.accessioned2022-05-11T14:17:18Z
dc.date.available2022-05-11T14:17:18Z
dc.date.issued2016
dc.departmentFakülteler, Çorlu Mühendislik Fakültesi, Çevre Mühendisliği Bölümü
dc.description.abstractParacetamol (PAM) mineralization through nano-composite thin film (TF) based photocatalytic system was investigated under variable operational conditions. The experiments were conducted using a non stirred flow through coated tubular quartz reactor (TQR). Elimination of energy demand arising from stirring and aeration through the developed TF reactor configuration was also among the main research interests. Ag-doped Si-TiO2 TFs were grown on Si-decorated inner surface of the TQR using sol-gel dip coating technique. The fabricated TF was characterized by SEM-EDS, TEM, AFM, XPS and UVvis spectroscopy methods. TF-based PAM mineralization kinetics were observed for both UVvis and UV wavelengths using pure, Si-Ti and Ag-doped Si-TiO2 TF(s). The direct and indirect optical ban gap energies (BGE) for the Ag doped Si-TiO2 TF were estimated to be 2.56 eV and 2.86 eV respectively. While no visible light activity was observed for pure TiO2 TF, Ag-doped Si-TiO2 TF exhibited significant PAM degradation activity for lambda > 400 nm with a k(obs) value of 2.1 +/- 0.1 10(-3) min(-1). In addition to known phenolic and carboxylated intermediates, UVvis spectroscopy, HPLC-MS and UPLC-MS/MS measurements indicated alpha-cyano-4-hydroxicinnamic acid (alpha PHC) formation as a result of photo-addition reactions under UV C irradiation. Experimental results also indicated that alpha PHC blocks h(+)/e(-) formation completely. Paracetamol could be degraded economically under UV B irradiation through the fabricated TF reactor without stirring, aeration or adding external electron acceptors. (C) 2016 Elsevier B.V. All rights reserved.
dc.description.sponsorshipScientific and Technological Research Council of Turkey TUBITAKTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [111Y209]; Food Antioxidants Measurement & Application Center
dc.description.sponsorshipThis work is partially funded by The Scientific and Technological Research Council of Turkey TUBITAK (Project 111Y209). The authors express their gratitude to Food Antioxidants Measurement & Application Center for the support given to the projects.
dc.identifier.doi10.1016/j.jphotochem.2016.03.003
dc.identifier.endpage109
dc.identifier.issn1010-6030
dc.identifier.scopus2-s2.0-84961226330
dc.identifier.scopusqualityQ2
dc.identifier.startpage102
dc.identifier.urihttps://doi.org/10.1016/j.jphotochem.2016.03.003
dc.identifier.urihttps://hdl.handle.net/20.500.11776/6304
dc.identifier.volume322
dc.identifier.wosWOS:000378100600013
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorÇifçi, Deniz İzlen
dc.institutionauthorTuncal, Tolga
dc.language.isoen
dc.publisherElsevier Science Sa
dc.relation.ispartofJournal of Photochemistry and Photobiology A-Chemistry
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectTiO2 thin film
dc.subjectEnergy optimization
dc.subjectParacetamol degradation
dc.subjectHole blocking
dc.subjectIntermediates
dc.subjectAqueous-Solutions
dc.subjectTio2
dc.subjectPhotodegradation
dc.subjectDegradation
dc.subjectOzonation
dc.titleDetermination of optimum extinction wavelength for paracetamol removal through energy efficient thin film reactor
dc.typeArticle

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