Biodiesel from sunflower oil in supercritical methanol with calcium oxide

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dc.contributor.authorDemirbas, Ayhan
dc.date.accessioned2020-03-26T17:17:03Z
dc.date.available2020-03-26T17:17:03Z
dc.date.issued2007
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractIn this study, sunflower seed oil was subjected to the transesterification reaction with calcium oxide (CaO) in supercritical methanol for obtaining biodiesel. Methanol is used most frequently as the alcohol in the transesterification process. Calcium oxide (CaO) can considerably improve the transesterification reaction of sunflower seed oil in supercritical methanol. The variables affecting the methyl ester yield during the transesterification reaction, such as the catalyst content, reaction temperature and the molar ratio of soybean oil to alcohol, were investigated and compared with those of non-catalyst runs. The catalytic transesterification ability of CaO is quite weak under ambient temperature. At a temperature of 335 K, the yield of methyl ester is only about 5% in 3 h. When CaO was added from LUX) to 3.0%, the transesterification speed increased evidently, while when the catalyst content was further enhanced to 5%, the yield of methyl ester slowly reached to a plateau. It was observed that increasing the reaction temperature had a favorable influence on the methyl ester yield. In addition, for molar ratios ranging from I to 41, as the higher molar ratios of methanol to oil were charged, the greater transesterification speed was obtained. When the temperature was increased to 525 K, the transesterification reaction was essentially completed within 6 min with 3 wt% CaO and 41:1 methanol/oil molar ratio. (c) 2006 Elsevier Ltd. All rights reserved.en_US
dc.identifier.doi10.1016/j.enconman.2006.08.004en_US
dc.identifier.endpage941en_US
dc.identifier.issn0196-8904en_US
dc.identifier.issn1879-2227en_US
dc.identifier.issue3en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage937en_US
dc.identifier.urihttps://dx.doi.org/10.1016/j.enconman.2006.08.004
dc.identifier.urihttps://hdl.handle.net/20.500.12395/21243
dc.identifier.volume48en_US
dc.identifier.wosWOS:000244495000029en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherPERGAMON-ELSEVIER SCIENCE LTDen_US
dc.relation.ispartofENERGY CONVERSION AND MANAGEMENTen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectbiodieselen_US
dc.subjecttransesterificationen_US
dc.subjectsupercritical methanolen_US
dc.subjectCaOen_US
dc.subjectcatalysten_US
dc.titleBiodiesel from sunflower oil in supercritical methanol with calcium oxideen_US
dc.typeArticleen_US

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