Comparative degradation of 5-fluorouracil in aqueous solution by using H2O2-modified subcritical water, photocatalytic oxidation and electro-Fenton processes

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dc.contributor.authorKulaksız, Esra
dc.contributor.authorKayan, Berkant
dc.contributor.authorGözmen, Belgin
dc.contributor.authorKalderis, Dimitrios
dc.contributor.authorOturan, Nihal
dc.contributor.authorOturan, Mehmet A.
dc.date.accessioned2022-02-07T07:28:29Z
dc.date.available2022-02-07T07:28:29Z
dc.date.issued2022
dc.departmentSabire Yazıcı Fen Edebiyat Fakültesi
dc.description.abstractThis study investigated the degradation of the antineoplastic agent 5-fluorouracil (5-FU) widely applied to treat different cancers using different advanced oxidation processes such as electro-Fenton (EF), photocatalysis with TiO2, and H2O2-modified subcritical water oxidation. The treatment with the EF process was the most efficient compared to others. Interestingly, in the EF process, the oxidative degradation of 5-FU behaved differently depending on the anode used. At low currents (20 and 40 mA), Pt and DSA anodes performed better than BDD and Ti4O7 anodes. In contrast, at the higher current of 120 mA, the production of heterogeneous hydroxyl radicals (M(•OH)) became important and contributed significantly to the oxidation of 5-FU in addition to homogeneous •OH generated in the bulk solution. These latter have high O2-evolution overpotential leading to the high amount of physisorbed M(•OH) compared to Pt and DSA. The oxidative degradation of 5-FU was then performed by titanium dioxide-based photocatalytic oxidation and subcritical water oxidation processes, both of which showed a lower degradation efficiency and failed to achieve complete mineralization. Finally, a comparison was performed in laboratory-scale, taking into account the following performance indicators: the degradation efficiency, the mineralization power, the cost of equipment and reagents, and the energy required for the treatment of 5-FU.
dc.identifier.endpage-en_US
dc.identifier.issue-en_US
dc.identifier.pmid34450155
dc.identifier.scopusqualityQ1
dc.identifier.startpage-en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12451/9177
dc.identifier.volume204en_US
dc.identifier.wosWOS:000704804100003
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofEnvironmental Research
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/embargoedAccess
dc.subject5-Fluorouracil
dc.subjectElectro-Fenton
dc.subjectPhotocatalysis
dc.subjectSubcritical Water
dc.subjectWastewater Treatment
dc.titleComparative degradation of 5-fluorouracil in aqueous solution by using H2O2-modified subcritical water, photocatalytic oxidation and electro-Fenton processes
dc.typeArticle

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