Transesterification of rapeseed oil with methanol in the presence of various co-solvents
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://comum.rcaap.pt/handle/123456789/1297 http://hdl.handle.net/20.500.12207/330 |
Resumo: | In this study, transesterification of rapeseed oil using various co-solvents(diethyl ether (DEE), dibutyl ether (diBE), tert-butyl methyl ether (tBME), diisopropyl ether (diIPE), tetrahydrofuran (THF), and acetone) was studied. The variables affecting the ester yield during transesterification reaction, such as catalyst content, methanol:oil molar ratio, methanol:cosolvent molar ratio, co-solvent type, catalysts type, agitation rate and reaction temperature were investigated. The process was monitored by gas chromatography, determining the concentration of the methyl esters. Biodiesel was characterized according to ISO norms. Among the studied co-solvents, the DEE and tBME take to the best results, however diIPE, diBE and acetone hardly improve the obtained results using only methanol. Within the range of studied variability, the rest of variables do not exercise a very significant influence. The best results are obtained with 0.7 % of KOH, a molar ratio methanol/oil of 9:1, a molar ratio co-solvent/methanol 1:1, an agitation rate of 700 rpm and a temperature of 30 ºC |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Transesterification of rapeseed oil with methanol in the presence of various co-solventsTransesterificationRapeseed oilCo-solventsIn this study, transesterification of rapeseed oil using various co-solvents(diethyl ether (DEE), dibutyl ether (diBE), tert-butyl methyl ether (tBME), diisopropyl ether (diIPE), tetrahydrofuran (THF), and acetone) was studied. The variables affecting the ester yield during transesterification reaction, such as catalyst content, methanol:oil molar ratio, methanol:cosolvent molar ratio, co-solvent type, catalysts type, agitation rate and reaction temperature were investigated. The process was monitored by gas chromatography, determining the concentration of the methyl esters. Biodiesel was characterized according to ISO norms. Among the studied co-solvents, the DEE and tBME take to the best results, however diIPE, diBE and acetone hardly improve the obtained results using only methanol. Within the range of studied variability, the rest of variables do not exercise a very significant influence. The best results are obtained with 0.7 % of KOH, a molar ratio methanol/oil of 9:1, a molar ratio co-solvent/methanol 1:1, an agitation rate of 700 rpm and a temperature of 30 ºC2011-09-26T09:11:52Z2010-11-01T00:00:00Z2010-11conference objectinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://comum.rcaap.pt/handle/123456789/1297http://hdl.handle.net/20.500.12207/330engPardal, Ana CristinaEncinar, J.M.González, J.F.Martínez, G.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-06-20T09:31:32Zoai:repositorio.ipbeja.pt:20.500.12207/330Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-06-20T09:31:32Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Transesterification of rapeseed oil with methanol in the presence of various co-solvents |
title |
Transesterification of rapeseed oil with methanol in the presence of various co-solvents |
spellingShingle |
Transesterification of rapeseed oil with methanol in the presence of various co-solvents Pardal, Ana Cristina Transesterification Rapeseed oil Co-solvents |
title_short |
Transesterification of rapeseed oil with methanol in the presence of various co-solvents |
title_full |
Transesterification of rapeseed oil with methanol in the presence of various co-solvents |
title_fullStr |
Transesterification of rapeseed oil with methanol in the presence of various co-solvents |
title_full_unstemmed |
Transesterification of rapeseed oil with methanol in the presence of various co-solvents |
title_sort |
Transesterification of rapeseed oil with methanol in the presence of various co-solvents |
author |
Pardal, Ana Cristina |
author_facet |
Pardal, Ana Cristina Encinar, J.M. González, J.F. Martínez, G. |
author_role |
author |
author2 |
Encinar, J.M. González, J.F. Martínez, G. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Pardal, Ana Cristina Encinar, J.M. González, J.F. Martínez, G. |
dc.subject.por.fl_str_mv |
Transesterification Rapeseed oil Co-solvents |
topic |
Transesterification Rapeseed oil Co-solvents |
description |
In this study, transesterification of rapeseed oil using various co-solvents(diethyl ether (DEE), dibutyl ether (diBE), tert-butyl methyl ether (tBME), diisopropyl ether (diIPE), tetrahydrofuran (THF), and acetone) was studied. The variables affecting the ester yield during transesterification reaction, such as catalyst content, methanol:oil molar ratio, methanol:cosolvent molar ratio, co-solvent type, catalysts type, agitation rate and reaction temperature were investigated. The process was monitored by gas chromatography, determining the concentration of the methyl esters. Biodiesel was characterized according to ISO norms. Among the studied co-solvents, the DEE and tBME take to the best results, however diIPE, diBE and acetone hardly improve the obtained results using only methanol. Within the range of studied variability, the rest of variables do not exercise a very significant influence. The best results are obtained with 0.7 % of KOH, a molar ratio methanol/oil of 9:1, a molar ratio co-solvent/methanol 1:1, an agitation rate of 700 rpm and a temperature of 30 ºC |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-11-01T00:00:00Z 2010-11 2011-09-26T09:11:52Z |
dc.type.driver.fl_str_mv |
conference object |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://comum.rcaap.pt/handle/123456789/1297 http://hdl.handle.net/20.500.12207/330 |
url |
http://comum.rcaap.pt/handle/123456789/1297 http://hdl.handle.net/20.500.12207/330 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
mluisa.alvim@gmail.com |
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1817542877249536000 |