Separation of the Glycerol-Biodiesel Phases in an Ethyl Transesterification Synthetic Route Using Water

Detalhes bibliográficos
Autor(a) principal: Silva,Willian L. G. da
Data de Publicação: 2015
Outros Autores: Souza,Patrícia T. de, Shimamoto,Gustavo G., Tubino,Matthieu
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532015000901745
Resumo: Biodiesel is obtained by the transesterification of vegetable oil (or fat) and alcohol, with methanol being the most used alcohol. Methanol can be replaced by ethanol; however, this alcohol acts as a surfactant in the reaction mixture, promoting a stable dispersion of the glycerol in biodiesel, which hinders the separation of the glycerol-biodiesel phases. In this study, it was found that the addition of 1% v/v water relative to the total volume of the reaction mixture expedites the separation of the phases by interrupting the emulsifying action of ethanol with an immediate separation of glycerol from biodiesel. The characterization of the produced biodiesels was performed using hydrogen nuclear magnetic resonance (1H NMR) and gas chromatography (GC). 1H NMR indicated a 96.9% conversion of triglycerides to biodiesel. The fatty acid compositions of the synthesized ethyl and methyl biodiesels determined using GC are essentially the same.
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spelling Separation of the Glycerol-Biodiesel Phases in an Ethyl Transesterification Synthetic Route Using Waterbiodieseltransesterificationethanolmethanolwaterphase separationBiodiesel is obtained by the transesterification of vegetable oil (or fat) and alcohol, with methanol being the most used alcohol. Methanol can be replaced by ethanol; however, this alcohol acts as a surfactant in the reaction mixture, promoting a stable dispersion of the glycerol in biodiesel, which hinders the separation of the glycerol-biodiesel phases. In this study, it was found that the addition of 1% v/v water relative to the total volume of the reaction mixture expedites the separation of the phases by interrupting the emulsifying action of ethanol with an immediate separation of glycerol from biodiesel. The characterization of the produced biodiesels was performed using hydrogen nuclear magnetic resonance (1H NMR) and gas chromatography (GC). 1H NMR indicated a 96.9% conversion of triglycerides to biodiesel. The fatty acid compositions of the synthesized ethyl and methyl biodiesels determined using GC are essentially the same.Sociedade Brasileira de Química2015-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532015000901745Journal of the Brazilian Chemical Society v.26 n.9 2015reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.5935/0103-5053.20150147info:eu-repo/semantics/openAccessSilva,Willian L. G. daSouza,Patrícia T. deShimamoto,Gustavo G.Tubino,Matthieueng2015-09-11T00:00:00Zoai:scielo:S0103-50532015000901745Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2015-09-11T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Separation of the Glycerol-Biodiesel Phases in an Ethyl Transesterification Synthetic Route Using Water
title Separation of the Glycerol-Biodiesel Phases in an Ethyl Transesterification Synthetic Route Using Water
spellingShingle Separation of the Glycerol-Biodiesel Phases in an Ethyl Transesterification Synthetic Route Using Water
Silva,Willian L. G. da
biodiesel
transesterification
ethanol
methanol
water
phase separation
title_short Separation of the Glycerol-Biodiesel Phases in an Ethyl Transesterification Synthetic Route Using Water
title_full Separation of the Glycerol-Biodiesel Phases in an Ethyl Transesterification Synthetic Route Using Water
title_fullStr Separation of the Glycerol-Biodiesel Phases in an Ethyl Transesterification Synthetic Route Using Water
title_full_unstemmed Separation of the Glycerol-Biodiesel Phases in an Ethyl Transesterification Synthetic Route Using Water
title_sort Separation of the Glycerol-Biodiesel Phases in an Ethyl Transesterification Synthetic Route Using Water
author Silva,Willian L. G. da
author_facet Silva,Willian L. G. da
Souza,Patrícia T. de
Shimamoto,Gustavo G.
Tubino,Matthieu
author_role author
author2 Souza,Patrícia T. de
Shimamoto,Gustavo G.
Tubino,Matthieu
author2_role author
author
author
dc.contributor.author.fl_str_mv Silva,Willian L. G. da
Souza,Patrícia T. de
Shimamoto,Gustavo G.
Tubino,Matthieu
dc.subject.por.fl_str_mv biodiesel
transesterification
ethanol
methanol
water
phase separation
topic biodiesel
transesterification
ethanol
methanol
water
phase separation
description Biodiesel is obtained by the transesterification of vegetable oil (or fat) and alcohol, with methanol being the most used alcohol. Methanol can be replaced by ethanol; however, this alcohol acts as a surfactant in the reaction mixture, promoting a stable dispersion of the glycerol in biodiesel, which hinders the separation of the glycerol-biodiesel phases. In this study, it was found that the addition of 1% v/v water relative to the total volume of the reaction mixture expedites the separation of the phases by interrupting the emulsifying action of ethanol with an immediate separation of glycerol from biodiesel. The characterization of the produced biodiesels was performed using hydrogen nuclear magnetic resonance (1H NMR) and gas chromatography (GC). 1H NMR indicated a 96.9% conversion of triglycerides to biodiesel. The fatty acid compositions of the synthesized ethyl and methyl biodiesels determined using GC are essentially the same.
publishDate 2015
dc.date.none.fl_str_mv 2015-09-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532015000901745
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532015000901745
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.5935/0103-5053.20150147
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Journal of the Brazilian Chemical Society v.26 n.9 2015
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
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