Removal of sulphate from landfill leachate by crystallization

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dc.authorid0000-0002-6321-0350en_US
dc.contributor.authorAygün, Ahmet
dc.contributor.authorDogan, Selim
dc.contributor.authorArgun, Mehmet Emin
dc.contributor.authorAtes, Havva
dc.date.accessioned2021-03-20T20:12:40Z
dc.date.available2021-03-20T20:12:40Z
dc.date.issued2019
dc.departmentBTÜ, Mühendislik ve Doğa Bilimleri Fakültesi, Çevre Mühendisliği Bölümüen_US
dc.description.abstractThe present study explores the applicability of response surface methodology (RSM) in conjunction with central composite design (CCD) matrix to statistically optimize ettringite crystallization process for the removal of sulphate from landfill leachate. A three factor-five coded level CCD with 20 runs, was performed to estimate the best fitted model. The RSM results indicated that the fitted quadratic regression model could be appropriate to predict sulfate removal efficiency. The pH was identified as the most dominant parameter affecting sulphate removal. 61.6% of maximum sulphate removal efficiency was obtained at pH of 11.06 for a 1.87 of Ca/SO4 and 0.51 of Al/SO4 molar ratios. The operating cost for ettringite crystallization at optimized conditions was calculated to be 0.52 $/m(3 ). The significance of independent variables and their interactions were tested by analysis of variance. Scanning electron microscope (SEM) and SEM coupled with energy dispersive X-Ray spectroscopy results confirmed the formation of ettringite crystal and were used to describe its morphology features.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey, TUBITAKTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [115Y031]en_US
dc.description.sponsorshipThis study was funded by the The Scientific and Technological Research Council of Turkey, TUBITAK (Grant No.: 115Y031).en_US
dc.identifier.doi10.4491/eer.2017.179en_US
dc.identifier.endpage30en_US
dc.identifier.issn1226-1025
dc.identifier.issn2005-968X
dc.identifier.issue1en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage24en_US
dc.identifier.urihttp://doi.org/10.4491/eer.2017.179
dc.identifier.urihttps://hdl.handle.net/20.500.12885/659
dc.identifier.volume24en_US
dc.identifier.wosWOS:000463210100003en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorAygün, Ahmet
dc.language.isoenen_US
dc.publisherKorean Soc Environmental Engineersen_US
dc.relation.ispartofEnvironmental Engineering Researchen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectEttringite crystallizationen_US
dc.subjectLeachateen_US
dc.subjectResponse surface methodology (RSM)en_US
dc.subjectScanning electron microscope (SEM)en_US
dc.subjectSulphate removalen_US
dc.titleRemoval of sulphate from landfill leachate by crystallizationen_US
dc.typeArticleen_US

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