Separation of the Glycerol-Biodiesel Phases in an Ethyl Transesterification Synthetic Route Using Water
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , |
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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Journal of the Brazilian Chemical Society (Online) |
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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 |
_version_ |
1750318177460420608 |