Electrooxidation as post treatment of ultrafiltration effluent in a landfill leachate MBR treatment plant: Effects of BDD, Pt and DSA anode types

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dc.authorid0000-0003-3386-975Xen_US
dc.contributor.authorUkundimana, Z.
dc.contributor.authorOmwene, P., I
dc.contributor.authorGengec, E.
dc.contributor.authorCan, Orhan Taner
dc.contributor.authorKobya, M.
dc.date.accessioned2021-03-20T20:12:59Z
dc.date.available2021-03-20T20:12:59Z
dc.date.issued2018
dc.departmentBTÜ, Mühendislik ve Doğa Bilimleri Fakültesi, Çevre Mühendisliği Bölümüen_US
dc.description.abstractIn this study, ultrafiltration (UF) effluent from a landfill leachate treatment plant (equipped with anoxicaerobic oxidation and UF) was treated by Electrooxidation (EO) process in a batch reactor using different dimensionally stable electrodes (DSA anodes: Ti/PtO2-IrO2, Ti/RuO2-TiO2, Ti/RuO2-IrO2, and Ti/IrO2-Ta2O5), boron doped diamond (BDD) and Pt as anode and stainless-steel electrode as cathode. The untreated UF effluent had COD and TOC concentrations of 888 mg/L and 398.6 mg/L, respectively. Overall, BDD anode performed better than the other DSA anodes under the tested conditions with removal efficiencies of 64.9-86.8% and 68.2-92.0% for TOC and COD, respectively. The calculated energy consumptions at maximum removal efficiencies were 111.2 kWh per m(3) (136.01 kWh/kg COD and 321.27 kWh/kg TOC) at 360 A/m(2) and 4 h of treatment time for BDD anode. However, TOC and COD removal efficiencies of 31.3-86.8% and 36.5-92.0%, respectively, were obtained for the other DSA anodes at current densities between 60 and 360 A/m(2) and 4 h of treatment time. Energy consumptions and anode efficiency for DSA anodes ranged from 7.3-111.2 kWh/m(3) (15.67-194.87 kWh/kg COD) and 4.40-34.24 g COD/Ah m(2) (or 1.77-14.62 g TOC/Ah m(2)). The general COD and TOC removal mechanism well fitted the pseudo first-order kinetic model with R-2 of >0.94 particularly for BDD electrode under all applied current densities. The chloride content in the leachate promoted indirect oxidation leading to higher COD and TOC removal efficiencies. Moreover, high performance size exclusion chromatography (HPSEC) was used to evaluate the variation of fractions in wastewater during EO. (C) 2018 Published by Elsevier Ltd.en_US
dc.identifier.doi10.1016/j.electacta.2018.08.019en_US
dc.identifier.endpage263en_US
dc.identifier.issn0013-4686
dc.identifier.issn1873-3859
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage252en_US
dc.identifier.urihttp://doi.org/10.1016/j.electacta.2018.08.019
dc.identifier.urihttps://hdl.handle.net/20.500.12885/760
dc.identifier.volume286en_US
dc.identifier.wosWOS:000445133700029en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorCan, Orhan Taner
dc.language.isoenen_US
dc.publisherPergamon-Elsevier Science Ltden_US
dc.relation.ispartofElectrochimica Actaen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectLandfill leachateen_US
dc.subjectElectrooxidationen_US
dc.subjectDSA anodesen_US
dc.subjectBDD anodeen_US
dc.titleElectrooxidation as post treatment of ultrafiltration effluent in a landfill leachate MBR treatment plant: Effects of BDD, Pt and DSA anode typesen_US
dc.typeArticleen_US

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