Biodiesel production from vegetable oils by supercritical methanol

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dc.contributor.authorDemirbas, A
dc.date.accessioned2020-03-26T16:56:37Z
dc.date.available2020-03-26T16:56:37Z
dc.date.issued2005
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractTransesterification of vegetable oils in supercritical methanol are carried out without using any catalyst. Methyl esters of vegetable oils or biodiesels have several outstanding advantages among other new-renewable and clean engine fuel alternatives and can be used in any diesel engine without modification. The most important variables affecting the methyl ester yield during the transesterification reaction are molar ratio of alcohol to vegetable oil and reaction temperature. Compared to no. 2 Diesel fuel, all vegetable oils are more viscous, while the methyl esters of vegetable oils are slightly more viscous. Biodiesel has become more attractive because of its environmental benefits. The cost of biodiesel, however, is the main obstacle to commercialization. With cooking oils as raw material, viability of a continuous transesterification process and recovery of high quality glycerol as a biodiesel by-product are primary options to be considered to lower the cost of biodiesel. Supercritical methanol has a high potential for both transesterification of triglycerides and methyl esterification of free fatty acids to methyl esters for diesel fuel substitute. In supercritical methanol transesterification method, yield of conversion rises 95% in 10 min. Viscosity of vegetable oils (27.2-53.6 mm(2)/s) get reduced in vegetable oil methyl esters (3.59-4.63 mm(2)/s). The flash point values of vegetable oil methyl esters are highly lower than those of vegetable oils. All increase in density from 860 to 885 k-/m(3) for vegetable oil methyl esters increases the viscosity from 3.59 to 4.63 mm(2)/s.en_US
dc.identifier.endpage865en_US
dc.identifier.issn0022-4456en_US
dc.identifier.issue11en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage858en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12395/19611
dc.identifier.volume64en_US
dc.identifier.wosWOS:000233139100008en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherNATL INST SCIENCE COMMUNICATIONen_US
dc.relation.ispartofJOURNAL OF SCIENTIFIC & INDUSTRIAL RESEARCHen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectalternative fuelen_US
dc.subjectbiodieselen_US
dc.subjectmethanolen_US
dc.subjecttransesterificationen_US
dc.subjectvegetable oilen_US
dc.titleBiodiesel production from vegetable oils by supercritical methanolen_US
dc.typeArticleen_US

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