Peroxydisulfate activation by in-situ synthesized Fe3O4 nanoparticles for degradation of atrazine: Performance and mechanism

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dc.authorid0000-0002-5713-3141en_US
dc.contributor.authorKeyikoğlu, Ramazan
dc.contributor.authorKarataş, Okan
dc.contributor.authorKhataee, Alireza
dc.contributor.authorKobya, Mehmet
dc.contributor.authorCan, Orhan Taner
dc.contributor.authorSoltani, Reza Darvishi Cheshmeh
dc.date.accessioned2021-03-20T20:09:20Z
dc.date.available2021-03-20T20:09:20Z
dc.date.issued2020
dc.departmentBTÜ, Mühendislik ve Doğa Bilimleri Fakültesi, Çevre Mühendisliği Bölümüen_US
dc.description.abstractHerein activation of persoxydisulfate (PDS) was achieved by in-situ synthesized Fe3O4 nanoparticles (NPs) from a sacrificial iron anode in an electrochemical (EC) cell. The as-synthesized Fe3O4 NPs were characterized to be in spherical and in the nano size. The performance of the process, EC-Fe3O4/PDS, was investigated in terms of atrazine (ATZ) degradation. Optimum process conditions were determined as initial pH of 5, electrolyte (Na2SO4) concentration of 1 mM, a current density of 1.67 A m(-2), PDS concentration of 0.5 mM and initial ATZ concentration of 10 mg L-1. At optimum conditions, the EC-Fe3O4/PDS process could effectively degrade 80% of ATZ in an aqueous solution within a short reaction time of 20 min. The electrical energy consumption of the process was found to be quite low with 0.0307 kWh/m(3). Based on the LC/MS analysis, the degradation pathway of ATZ with seven transformation products was proposed. Finally, a possible mechanism of the EC-Fe3O4/PDS process was put forward, which includes the activation of PDS and the role of radicals in the degradation of ATZ. In conclusion, the combination of Fe3O4 NPs catalyzed PDS oxidation with the EC process was very effective in the degradation of ATZ to dechlorinated final products. The strong synergistic effect makes this process superior to conventional methods due to the high degradation efficiency with low electrical energy and chemical consumption. Application of this method, with very low current density, may not only minimize the electrical energy consumption but also help reduce the sludge production due to the lower iron dissolution.en_US
dc.identifier.doi10.1016/j.seppur.2020.116925en_US
dc.identifier.issn1383-5866
dc.identifier.issn1873-3794
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttp://doi.org/10.1016/j.seppur.2020.116925
dc.identifier.urihttps://hdl.handle.net/20.500.12885/369
dc.identifier.volume247en_US
dc.identifier.wosWOS:000536142200051en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorKeyikoğlu, Ramazan
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofSeparation And Purification Technologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectAtrazineen_US
dc.subjectElectrochemical processen_US
dc.subjectPeroxydisulfate activationen_US
dc.subjectSulfate radicalen_US
dc.subjectMagnetite nanoparticlesen_US
dc.titlePeroxydisulfate activation by in-situ synthesized Fe3O4 nanoparticles for degradation of atrazine: Performance and mechanismen_US
dc.typeArticleen_US

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