Kinetics and thermodynamics of oil extraction from sunflower seeds in the presence of aqueous acidic hexane solutions

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dc.authoridGecgel, Umit/0000-0002-7092-5899
dc.authorwosidGecgel, Umit/ABA-3486-2020
dc.contributor.authorTopallar, H
dc.contributor.authorGeçgel, IÜ
dc.date.accessioned2024-06-12T11:03:12Z
dc.date.available2024-06-12T11:03:12Z
dc.date.issued2000
dc.departmentTrakya Üniversitesien_US
dc.description.abstractOil extraction was performed in aqueous HCl, H2SO4 and H3PO4 solutions with n-hexane (C6H14) at 30, 40, 50 and 60 degreesC using 10 gr of sunflower seeds over 1 h with 10-min. sampling intervals. The optimum acid concentration was wt. 10% for each acid, and the highest oil yield was obtained in the extraction procedure with n-hexane containing H2SO4. The extraction process was observed with regard to the percent oil yield versus time, and the reaction order was found to be first-order kinetics by the differential method. The activation energy for the oil extraction kinetics of sunflower seeds with 10% H2SO4 was found to be E-alpha = 4.2 kJmol(-1), and the activation thermodynamic parameters at 60 degreesC were DeltaH(not equal)=1.43 kJmol(-1), DeltaS(not equal)=-309.3 Jmol(-1)K(-1) and DeltaG(not equal)=104.4 kJmol(-1). The enthalpy value was DeltaH=11.2 kJmol(-1), and the other thermodynamic parameters at 60 degreesC were DeltaS=36.75 Jmol(-1)K(-1) and DeltaG=-1.07 kJmol(-1).en_US
dc.identifier.endpage253en_US
dc.identifier.issn1010-7614
dc.identifier.issue3en_US
dc.identifier.scopus2-s2.0-0039622652en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage247en_US
dc.identifier.trdizinid34281en_US
dc.identifier.urihttps://search.trdizin.gov.tr/yayin/detay/34281
dc.identifier.urihttps://hdl.handle.net/20.500.14551/21572
dc.identifier.volume24en_US
dc.identifier.wosWOS:000090097300005en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakTR-Dizinen_US
dc.language.isoenen_US
dc.publisherScientific Technical Research Council Turkeyen_US
dc.relation.ispartofTurkish Journal Of Chemistryen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectHexaneen_US
dc.subjectKineticsen_US
dc.subjectOil Extractionen_US
dc.subjectSulfuric Aciden_US
dc.subjectSunflower Seeden_US
dc.subjectThermodynamicsen_US
dc.subjectCorn Germen_US
dc.subjectCottonseeden_US
dc.titleKinetics and thermodynamics of oil extraction from sunflower seeds in the presence of aqueous acidic hexane solutionsen_US
dc.typeArticleen_US

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