A comparative evaluation of ozonation and heterogeneous photocatalytic oxidation processes for reuse of secondary treated urban wastewater

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dc.authorid0000-0003-1449-9116
dc.authorid0000-0003-4942-3090
dc.authorid0000-0003-1379-0091
dc.authorscopusid9044416100
dc.authorscopusid6603776761
dc.authorscopusid7005362014
dc.authorscopusid55601187000
dc.authorscopusid6508019638
dc.authorwosidSelcuk, Huseyin/AAH-8726-2019
dc.authorwosidRizzo, Luigi/A-6286-2008
dc.contributor.authorRizzo, L.
dc.contributor.authorSelçuk, H.
dc.contributor.authorNikolaou, A. D.
dc.contributor.authorPagano Meriç, Süreyya
dc.contributor.authorBelgiorno, V.
dc.date.accessioned2022-05-11T14:17:14Z
dc.date.available2022-05-11T14:17:14Z
dc.date.issued2014
dc.departmentFakülteler, Çorlu Mühendislik Fakültesi, Çevre Mühendisliği Bölümü
dc.description.abstractThis study aimed to optimize two oxidation processes for wastewater reuse of an urban wastewater treatment plant (UWWTP) effluent intended for human consumption. Ozonation and TiO2 photocatalytic oxidation (PCO) processes were compared for their effectiveness in terms of organic matter degradation (measured as UV absorbance at 254nm, UV254), disinfection by products formation (measured as trihalomethanes formation potential, THMFP), and ecotoxicity (evaluated by Daphnia magna and Lepidium sativum), on secondary treated wastewater collected from a UWWTP in the province of Salerno (southern Italy). Accordingly, ozonation experiments using 28mg/L ozone dose and PCO experiments using 250W lamp (emission range: 315-400nm; emission peak: 14.7W/cm(2) at 340nm) and varying TiO2 dose from 1 to 3g/L were carried out. Ozonation (t(1/2)=71.6min) was not found as effective as PCO for organic matter degradation at all TiO2 doses, and 3g/L of TiO2 was found to be the most effective photocatalyst loading (t(1/2)=41.8min). Moreover, PCO-treated samples resulted in a lower THMFP compared to ozonation process. While ozonation did not increase toxicity to D. magna severely (10% of immobilization), PCO-treated samples exhibited varying toxicity end-points possibly due to formed oxidation intermediate products. However, Cl-2 disinfection of treated wastewater samples played an improving role in toxicity of PCO-treated samples. In particular, in 30min oxidized samples, toxicity to D. magna was decreased up to 50% (from 40 to 20% of immobilization) while germination index of L. sativum, a phytotoxicity test used for irrigation quality testing purpose, improved at 30% after Cl-2 disinfection in 3g/L of TiO2 treated sample.
dc.description.sponsorshipMIUR (Ministry of University and Research), ItalyMinistry of Education, Universities and Research (MIUR)
dc.description.sponsorshipThe authors would like to acknowledge MIUR (Ministry of University and Research), Italy, for supporting this study (Controllo dei sottoprodotti della disinfezione nelle acque potabili e nei reflui destinati al riutilizzo). Contributions by Dr Claudio Della Rocca, Dott. sa Mafalda Inglese, and Mr Paolo Napodano are greatly appreciated.
dc.identifier.doi10.1080/19443994.2013.787953
dc.identifier.endpage1421
dc.identifier.issn1944-3994
dc.identifier.issn1944-3986
dc.identifier.issue45542en_US
dc.identifier.scopus2-s2.0-84894428691
dc.identifier.scopusqualityQ3
dc.identifier.startpage1414
dc.identifier.urihttps://doi.org/10.1080/19443994.2013.787953
dc.identifier.urihttps://hdl.handle.net/20.500.11776/6273
dc.identifier.volume52
dc.identifier.wosWOS:000331695700021
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorPagano Meriç, Süreyya
dc.language.isoen
dc.publisherTaylor & Francis Inc
dc.relation.ispartofDesalination and Water Treatment
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectAdvanced oxidation processes
dc.subjectDisinfection by products
dc.subjectEcotoxicity
dc.subjectOzonation
dc.subjectPhotocatalysis
dc.subjectPhyto-toxicity
dc.subjectTrihalomethanes
dc.subjectWastewater reuse
dc.subjectTreatment-Plant Effluent
dc.subjectDegradation Kinetics
dc.subjectDisinfection
dc.subjectRemoval
dc.subjectOzone
dc.subjectReclamation
dc.subjectToxicity
dc.subjectProducts
dc.titleA comparative evaluation of ozonation and heterogeneous photocatalytic oxidation processes for reuse of secondary treated urban wastewater
dc.typeArticle

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