Simultaneous reduction of nitrate and perchlorate by sulfide-based denitrification process

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dc.authorid0000-0002-8840-5007
dc.contributor.authorCalis, Bedia
dc.contributor.authorUcar, Deniz
dc.date.accessioned2026-02-12T21:05:17Z
dc.date.available2026-02-12T21:05:17Z
dc.date.issued2023
dc.departmentBursa Teknik Üniversitesi
dc.description.abstractIn this study, sulfide-based denitrification was used for the first time for perchlorate reduction. Perchlorates (CIO4-) are the salts obtained from perchloric acid and are widely used in missile and rocket systems as well as in the automotive industry, fireworks production and some pharmaceutical industries (in the treatment of hyperthyroidism). Perchlorate prevents the iodine uptake of the thyroid gland and inhibits the production of thyroid hormones (triiodothyronine-T3 and thyroxine-T4). Autotrophic reduction methods are gaining popularity in the removal of perchlorate, which is often found together with nitrate in water. In this study, sulfide produced in an ethanol-based sulfidogenic reactor was used for simultaneous reduction of nitrate, nitrite and perchlorate. The study was conducted with batch reactors in 196 hours with varying concentrations of nitrate, nitrite and perchlorate in the presence of 30 mg/L total sulfide. The study showed that the perchlorate removal rate was gradually reduced in reactors containing 10 mg/L nitrite, 10 mg/L nitrate and 20 mg/L nitrite and 20 mg/L nitrate, respectively. The control group reactors revealed that sulfide is used as an electron donor and the process is biological. It was observed that sulfide, a dissolved inorganic sulfur compound, can reduce perchlorate in the presence of nitrate and/or nitrite, and the reduction rate is largely dependent on the presence of nitrate and nitrite.
dc.identifier.doi10.14744/sigma.2023.00019
dc.identifier.endpage213
dc.identifier.issn1304-7205
dc.identifier.issn1304-7191
dc.identifier.issue1
dc.identifier.scopus2-s2.0-85163354367
dc.identifier.scopusqualityQ4
dc.identifier.startpage207
dc.identifier.urihttps://doi.org/10.14744/sigma.2023.00019
dc.identifier.urihttps://hdl.handle.net/20.500.12885/6878
dc.identifier.volume41
dc.identifier.wosWOS:001031024700009
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherYildiz Technical Univ
dc.relation.ispartofSigma Journal of Engineering and Natural Sciences-Sigma Muhendislik Ve Fen Bilimleri Dergisi
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20260212
dc.subjectNitrite Reduction
dc.subjectNitrate Reduction
dc.subjectPerchlorate Reduction
dc.subjectSulfide-Based Reduction
dc.subjectWater Treatment
dc.titleSimultaneous reduction of nitrate and perchlorate by sulfide-based denitrification process
dc.typeArticle

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