Anoxic treatment of agricultural drainage water in a venturi-integrated membrane bioreactor

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dc.authorid0000-0002-6136-5025en_US
dc.contributor.authorKayaalp, Necati
dc.date.accessioned2023-09-29T06:20:43Z
dc.date.available2023-09-29T06:20:43Z
dc.date.issued2023en_US
dc.departmentDicle Üniversitesi, Mühendislik Fakültesi, İnşaat Mühendisliği Bölümüen_US
dc.description.abstractDue to low sludge production and being a clean source without residuals, hydrogen-based autotrophic denitrification appears to be a promising choice for nitrate removal from agricultural drainage waters or water/wastewater with a similar composition. Although the incorporation of hydrogen-based autotrophic denitrification with membrane bioreactors (MBRs) enabled almost 100% utilization of hydrogen, the technology still needs to be improved to better utilize its advantages. This study investigated the anoxic treatment of both synthetic and real drainage waters using hydrogen gas in a recently developed membrane bioreactor configuration, a venturi-integrated submerged membrane bioreactor, for the first time. The study examined the effects of the inflow nitrate concentration, and the use of a venturi device on the removal efficiency, as well as the effects of the presence of headspace gas circulation and circulation rate on membrane fouling. The study found that using the headspace gas circulation through a venturi device did not significantly affect the treatment efficiency, and in both cases, a removal efficiency of over 90% was achieved. When the inlet NO− 3 –N concentration was increased from 50 mg/L to 100 mg/L, the maximum removal efficiency decreased from 98% to 92%. It was observed that the most significant effect of the headspace gas circulation was on the membrane fouling. When the headspace gas was not circulated, the average membrane chemical washing period was 5 days. However, with headspace gas circulation, the membrane washing period increased to an average of 12 days. The study found that the headspace gas circulation method significantly affected membrane fouling. When the upper phase was circulated with a peristaltic pump instead of a venturi device, the membrane washing period decreased to one day. The study calculated the maximum hydrogen utilization efficiency to be approximately 96%.en_US
dc.identifier.citationKayaalp, N. (2023). Anoxic treatment of agricultural drainage water in a venturi-integrated membrane bioreactor. Membranes, 13(7), 1-16.en_US
dc.identifier.doi10.3390/membranes13070666
dc.identifier.endpage16en_US
dc.identifier.issn2077-0375
dc.identifier.issue7en_US
dc.identifier.pmid37505031
dc.identifier.scopus2-s2.0-85166243976
dc.identifier.scopusqualityQ2
dc.identifier.startpage1en_US
dc.identifier.urihttps://www.mdpi.com/2077-0375/13/7/666
dc.identifier.urihttps://hdl.handle.net/11468/12633
dc.identifier.volume13en_US
dc.identifier.wosWOS:001037516900001
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.institutionauthorKayaalp, Necati
dc.language.isoenen_US
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)en_US
dc.relation.ispartofMembranes
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectAnoxic denitrificationen_US
dc.subjectMembrane bioreactor (MBR)en_US
dc.subjectFoulingen_US
dc.subjectVenturien_US
dc.subjectHydrogenen_US
dc.titleAnoxic treatment of agricultural drainage water in a venturi-integrated membrane bioreactoren_US
dc.titleAnoxic treatment of agricultural drainage water in a venturi-integrated membrane bioreactor
dc.typeArticleen_US

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