Tetrachlorobiphenyl removal from sludge matrix using mixed crystal Ti0.97Fe0.02Ni0.01O2 thin film

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dc.authorid0000-0001-6249-5529
dc.authorscopusid35176620600
dc.authorscopusid25924855400
dc.authorscopusid6602558250
dc.authorwosidCifci, Deniz Izlen/AAH-3383-2020
dc.authorwosidTolga Tunçal, Dr/AAH-2487-2019
dc.contributor.authorTunçal, Tolga
dc.contributor.authorÇifçi, Deniz İzlen
dc.contributor.authorUslu, Orhan
dc.date.accessioned2022-05-11T14:17:17Z
dc.date.available2022-05-11T14:17:17Z
dc.date.issued2015
dc.departmentFakülteler, Çorlu Mühendislik Fakültesi, Çevre Mühendisliği Bölümü
dc.description.abstractIn this study, 2,2',5,5'-tetrachlorobiphenyl removal from activated sludge matrix using thin film (TF)-based photocatalytic (PCT-TF+UVC+H2O2) and UVC+H2O2 (photolytic) treatment systems were investigated for three different initial sludge pH(i) values of 3.0 +/- 0.1; 7.3 +/- 0.1 and 10.0 +/- 0.1. A novel, visible light active Ti:Fe:Ni nano composite TF was successfully synthesized and used as catalyst. The fabricated TF was characterized by SEM, TEM, XRD, XPS and UV-vis spectroscopy methods. Experimental results indicated that while raw industrial sludge contains only 2,2',5,5''-tetrachlorobiphenyl, treated sludge samples contained more chlorinated PCB congeners in descending chlorination order from 2,2',3,3',4,4',5,5',6,6' decachlorobiphenyl to 2,3',4,4',5 pentachlorobiphenyl. Experimental results also indicated that 2,2',5,5'-tetrachlorobiphenyl was removed from the sludge matrix by only TF-based PCT that was carried out at neutral pH(i). In addition, UVC+H2O2 system caused significant PCB formation at all studied pH levels. PCB generation/degradation reactions followed pseudo-first order reaction kinetics. Obtained results also proposed that UV irradiation can induce C-Cl bond cleavage in chlorinated compounds yielding Cl-center dot radicals, responsible for further chlorination. The k(obs) value observed in 2,2',5,5'-tetrachlorobiphenyl degradation by TF-based PCT at pH(i) = 7.3 +/- 0.1 was 0.0169 +/- 10(-3) min(-1) and 1.5 times higher than at pH(i)=3.0 +/- 0.1. The observed k(obs) values in TF based PCT for PCB generation at pH(i)=3.0 +/- 0.1 and pH(i)=10.0 +/- 0.1 were 0.0037 +/- 10(-3) and 0.0015 +/- 10(-3) min(-1), respectively. (C) 2015 Elsevier B.V. All rights reserved.
dc.description.sponsorshipScientific and Technological Research Council of Turkey TUBITAKTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [111Y209]; Cerkezkoy Organized Industrial Zone Management
dc.description.sponsorshipThis work is funded by The Scientific and Technological Research Council of Turkey TUBITAK (Project 111Y209) and Cerkezkoy Organized Industrial Zone Management.
dc.identifier.doi10.1016/j.apcatb.2015.05.011
dc.identifier.endpage177
dc.identifier.issn0926-3373
dc.identifier.issn1873-3883
dc.identifier.scopus2-s2.0-84929464261
dc.identifier.scopusqualityQ1
dc.identifier.startpage171
dc.identifier.urihttps://doi.org/10.1016/j.apcatb.2015.05.011
dc.identifier.urihttps://hdl.handle.net/20.500.11776/6295
dc.identifier.volume179
dc.identifier.wosWOS:000359873800020
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorTunçal, Tolga
dc.institutionauthorÇifçi, Deniz İzlen
dc.language.isoen
dc.publisherElsevier Science Bv
dc.relation.ispartofApplied Catalysis B-Environmental
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectTetrachlorobiphenyl
dc.subjectIndustrial sludge
dc.subjectThin film
dc.subjectPhotocatalytic treatment
dc.subjectChlorination
dc.subjectPCBs
dc.subjectPhotocatalytic Activity
dc.subjectTio2
dc.subjectDegradation
dc.subjectTemperature
dc.subjectPcbs
dc.subjectMetal
dc.subjectDechlorination
dc.subjectDeposition
dc.subjectOxidation
dc.subjectBiphenyl
dc.titleTetrachlorobiphenyl removal from sludge matrix using mixed crystal Ti0.97Fe0.02Ni0.01O2 thin film
dc.typeArticle

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