Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/242926
Type: Artigo
Title: Separation of the glycerol-biodiesel phases in an ethyl transesterification synthetic route using water
Author: Silva, Willian L. G. da
Souza, Patrícia T. de
Shimamoto, Gustavo G.
Tubino, Matthieu
Abstract: 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 (H-1 NMR) and gas chromatography (GC). H-1 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.
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 stabl
Subject: Biodiesel
Transesterificação
Etanol
Metanol
Água
Separação de fase
Country: Brasil
Editor: Sociedade Brasileira de Química
Citation: Separation Of The Glycerol-biodiesel Phases In An Ethyl Transesterification Synthetic Route Using Water. Soc Brasileira Quimica, v. 26, p. 1745-1750 SEP-2015.
Rights: fechado
Aberto
Identifier DOI: 10.5935/0103-5053.20150147
Address: https://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532015000901745
Date Issue: 2015
Appears in Collections:IQ - Artigos e Outros Documentos

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