Impact of temperature and biomass augmentation on biosulfur-driven autotrophic denitrification in membrane bioreactors treating real nitrate-contaminated groundwater

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dc.authorid0000-0002-0727-1845
dc.contributor.authorDemir, Ozlem
dc.contributor.authorAtasoy, Ayse Dilek
dc.contributor.authorCalis, Bedia
dc.contributor.authorCakmak, Yakup
dc.contributor.authorDi Capua, Francesco
dc.contributor.authorŞahinkaya, Erkan
dc.contributor.authorUçar, Deniz
dc.date.accessioned2025-05-10T19:43:37Z
dc.date.issued2022
dc.departmentİMÜ, Fakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Biyomühendislik Bölümü
dc.description.abstractNitrate (NO3-) contamination of groundwater is a major health concern worldwide as it can lead to serious illnesses such as methemoglobinemia and cancer. Autotrophic denitrification is a smart approach for treating groundwater, being typically organic-deficient. Lately, biogenic sulfur (S-bio(0)) has emerged as a sustainable, free, and high-efficiency substrate to fuel membrane bioreactors (MBRs) treating contaminated groundwater. However, the effects of moderate temperature and biomass concentration on the performance and fouling of the S-bio(0)-fed MBR were not investigated previously. This study shows that biomass levels of similar to 1 g MLVSS/L limit membrane fouling but also denitrification efficiency. Biomass augmentation up to 3 g MLVSS/L enhanced denitrification but worsened fouling due to increase of extracellular polymeric substance (EPS) levels in the bulk liquid. Temperature decrease from 30 degrees C to 20 degrees C halved denitrification efficiency, which could be partially recovered through bioaugmentation. The mechanisms affected by temperature decrease, practical applications, and future research needs were discussed.
dc.description.sponsorshipHarran University Scienti fi c Project Coordination Unit (HUBAP) [19344]
dc.description.sponsorshipThe authors would like to thank Smur fi t Kappa Z?lpich Papier for kindly providing S 0bio . The authors also thank Benan Karabulut and Celal ?ift?i for their assistance with the real groundwater supply. This work was supported by the Harran University Scienti fi c Project Coordination Unit (HUBAP) (Project No: 19344) .
dc.identifier.doi10.1016/j.scitotenv.2022.158470
dc.identifier.issn0048-9697
dc.identifier.issn1879-1026
dc.identifier.pmid36063930
dc.identifier.scopus2-s2.0-85137635838
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.scitotenv.2022.158470
dc.identifier.urihttps://hdl.handle.net/20.500.14730/10677
dc.identifier.volume853
dc.identifier.wosWOS:000865439400013
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofScience of The Total Environment
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250302
dc.subjectAutotrophic denitrification
dc.subjectBiogenic sulfur
dc.subjectMembrane bioreactor
dc.subjectGroundwater treatment
dc.subjectNitrate
dc.subjectTemperature
dc.titleImpact of temperature and biomass augmentation on biosulfur-driven autotrophic denitrification in membrane bioreactors treating real nitrate-contaminated groundwater
dc.typeArticle

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