Sequential sulfur-based denitrification/denitritation and nanofiltration processes for drinking water treatment

dc.authorid0000-0002-0536-6250en_US
dc.authorscopusid23976946000en_US
dc.contributor.authorAsik, Gulfem
dc.contributor.authorYilmaz, Tulay
dc.contributor.authorDi Capua, Francesco
dc.contributor.authorUçar, Deniz
dc.contributor.authorEsposito, Giovanni
dc.contributor.authorSahinkaya, Erkan
dc.date.accessioned2022-04-21T06:45:27Z
dc.date.available2022-04-21T06:45:27Z
dc.date.issued2021en_US
dc.departmentBTÜ, Mühendislik ve Doğa Bilimleri Fakültesi, Çevre Mühendisliği Bölümüen_US
dc.description.abstractEfficient and cost-effective solutions for nitrogen removal are necessary to ensure the availability of safe drinking water. This study proposes a combined treatment for nitrogen-contaminated groundwater by sequential autotrophic nitrogen removal in a sulfur-packed bed reactor (SPBR) and excess sulfate rejection via nanofiltration (NF). Autotrophic nitrogen removal in the SPBR was investigated under both denitrification and denitritation conditions under different NO3− and NO2− loading rates (LRs) and feeding strategies (NO3− only, NO2− only, or both NO3− and NO2− in the feed). Batch activity tests were carried out during SPBR operation to evaluate the effect of different feeding conditions on nitrogen removal activity by the SPBR biofilm. Bacteria responsible for nitrogen removal in the bioreactor were identified via Illumina sequencing. Dead-end filtration tests were performed with NF membranes to investigate the elimination of excess sulfate from the SPBR effluent. This study demonstrates that the combined process results in effective groundwater treatment and evidences that an adequately high nitrogen LR should be maintained to avoid the generation of excess sulfide.en_US
dc.identifier.doi10.1016/j.jenvman.2021.113083en_US
dc.identifier.issn03014797
dc.identifier.scopusqualityN/Aen_US
dc.identifier.urihttps://hdl.handle.net/20.500.12885/1959
dc.identifier.volume295en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorUçar, Deniz
dc.language.isoenen_US
dc.publisherAcademic Pressen_US
dc.relation.ispartofJournal of Environmental Managementen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectAutotrophic denitrificationen_US
dc.subjectDenitritationen_US
dc.subjectDrinking wateren_US
dc.subjectElemental sulfuren_US
dc.subjectNanofiltrationen_US
dc.subjectPacked bed reactoren_US
dc.titleSequential sulfur-based denitrification/denitritation and nanofiltration processes for drinking water treatmenten_US
dc.typeArticleen_US

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