Extracellular azo dye oxidation: Reduction of azo dye in batch reactors with biogenic sulfide

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dc.authorid0000-0003-3879-4064
dc.contributor.authorToprak, Dilan
dc.contributor.authorDemir, Ozlem
dc.contributor.authorUcar, Deniz
dc.date.accessioned2026-02-12T21:05:33Z
dc.date.available2026-02-12T21:05:33Z
dc.date.issued2022
dc.departmentBursa Teknik Üniversitesi
dc.description.abstractIn this study, the sulfide-based reduction of azo dyes (Acid Blue 264) was investigated. Sulfate was reduced to sulfide with an ethanol-fed sulfate reduction reactor and the sulfide produced was used to reduce azo dyes in separate batch reactors using sulfide as the electron carrier. The Box-Behnken experiment design method was used to identify how operational parameters affect the decolorization efficiency. As independent variables, initial dye concentration, sulfide concentration and reaction time were selected while dye removal was considered as the response function. Based on the Box Behnken design, the higher regression coefficient (R-2=0.9397) shows that the experimental results are in good agreement with model predictions. At the initial dye concentration of 80 mg/L, the highest dye removal efficiency, about 82.39%, was obtained at the sulfide concentration of 50 mg/L and the reaction time of 25 h. This study showed that Box Behnken's model prediction was a suitable approach for identifying the best conditions for dye removal.
dc.identifier.doi10.1080/10426507.2022.2046579
dc.identifier.endpage933
dc.identifier.issn1042-6507
dc.identifier.issn1563-5325
dc.identifier.issue9
dc.identifier.scopus2-s2.0-85126219580
dc.identifier.scopusqualityQ3
dc.identifier.startpage927
dc.identifier.urihttps://doi.org/10.1080/10426507.2022.2046579
dc.identifier.urihttps://hdl.handle.net/20.500.12885/7023
dc.identifier.volume197
dc.identifier.wosWOS:000765598300001
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherTaylor & Francis Ltd
dc.relation.ispartofPhosphorus Sulfur and Silicon and The Related Elements
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20260212
dc.subjectAzo dye reduction
dc.subjecttextile effluents
dc.subjectsulfide
dc.subjectelectron carrier
dc.subjectBox-Behnken
dc.titleExtracellular azo dye oxidation: Reduction of azo dye in batch reactors with biogenic sulfide
dc.typeArticle

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