Biodiesel production by transesterification in two steps: Kinetic effect or shift in the equilibrium conversion?

Autores
Pisarello Milesi, Maria Laura; Maquirriain, Maira Alejandra; Sacripanti Olalla, Paula; Rossi, Valentina; Querini, Carlos Alberto
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In continuous biodiesel production plants, practically all technologies carry out the transesterification in two steps, feeding methanol and catalyst in each of them. The glycerine phase is separated after the first one. The explanation normally given to justify this procedure is that the glycerine separation after the first step shifts the equilibrium towards products, thus increasing the conversion. The reacting mixture is a system with partial miscibility, being the compositions of the biodiesel and glycerine phases different depending upon the global composition of methanol, catalyst, soaps, water, etc. The results presented in this work make it possible to conclude that the most important cause of the conversion improvement when performing the reaction in two steps is a change in the catalyst and methanol distribution between the biodiesel and glycerine phases. The separation of the glycerine phase leads to a positive impact on the kinetic of the second reaction step, since it allows that both the catalyst and the methanol concentrate in the biodiesel phase. This is due to the small quantity of glycerine phase present in the system in the second reaction step. Therefore, the higher concentrations of catalyst and methanol in the biodiesel phase significantly increase the rate of transesterification and decrease the mass transfer limitations.
Fil: Pisarello Milesi, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
Fil: Maquirriain, Maira Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
Fil: Sacripanti Olalla, Paula. Universidad Nacional del Litoral; Argentina
Fil: Rossi, Valentina. Universidad Nacional del Litoral; Argentina
Fil: Querini, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
Materia
BIODIESEL
DISTRIBUTION EQUILIBRIUM
KINETICS
TWO-STEPS REACTION
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/88243
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Biodiesel production by transesterification in two steps: Kinetic effect or shift in the equilibrium conversion?Pisarello Milesi, Maria LauraMaquirriain, Maira AlejandraSacripanti Olalla, PaulaRossi, ValentinaQuerini, Carlos AlbertoBIODIESELDISTRIBUTION EQUILIBRIUMKINETICSTWO-STEPS REACTIONhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2In continuous biodiesel production plants, practically all technologies carry out the transesterification in two steps, feeding methanol and catalyst in each of them. The glycerine phase is separated after the first one. The explanation normally given to justify this procedure is that the glycerine separation after the first step shifts the equilibrium towards products, thus increasing the conversion. The reacting mixture is a system with partial miscibility, being the compositions of the biodiesel and glycerine phases different depending upon the global composition of methanol, catalyst, soaps, water, etc. The results presented in this work make it possible to conclude that the most important cause of the conversion improvement when performing the reaction in two steps is a change in the catalyst and methanol distribution between the biodiesel and glycerine phases. The separation of the glycerine phase leads to a positive impact on the kinetic of the second reaction step, since it allows that both the catalyst and the methanol concentrate in the biodiesel phase. This is due to the small quantity of glycerine phase present in the system in the second reaction step. Therefore, the higher concentrations of catalyst and methanol in the biodiesel phase significantly increase the rate of transesterification and decrease the mass transfer limitations.Fil: Pisarello Milesi, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; ArgentinaFil: Maquirriain, Maira Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; ArgentinaFil: Sacripanti Olalla, Paula. Universidad Nacional del Litoral; ArgentinaFil: Rossi, Valentina. Universidad Nacional del Litoral; ArgentinaFil: Querini, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; ArgentinaElsevier Science2018-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/88243Pisarello Milesi, Maria Laura; Maquirriain, Maira Alejandra; Sacripanti Olalla, Paula; Rossi, Valentina; Querini, Carlos Alberto; Biodiesel production by transesterification in two steps: Kinetic effect or shift in the equilibrium conversion?; Elsevier Science; Fuel Processing Technology; 181; 12-2018; 244-2510378-3820CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0378382018312979?via%3Dihubinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.fuproc.2018.09.028info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:33:49Zoai:ri.conicet.gov.ar:11336/88243instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:33:49.946CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Biodiesel production by transesterification in two steps: Kinetic effect or shift in the equilibrium conversion?
title Biodiesel production by transesterification in two steps: Kinetic effect or shift in the equilibrium conversion?
spellingShingle Biodiesel production by transesterification in two steps: Kinetic effect or shift in the equilibrium conversion?
Pisarello Milesi, Maria Laura
BIODIESEL
DISTRIBUTION EQUILIBRIUM
KINETICS
TWO-STEPS REACTION
title_short Biodiesel production by transesterification in two steps: Kinetic effect or shift in the equilibrium conversion?
title_full Biodiesel production by transesterification in two steps: Kinetic effect or shift in the equilibrium conversion?
title_fullStr Biodiesel production by transesterification in two steps: Kinetic effect or shift in the equilibrium conversion?
title_full_unstemmed Biodiesel production by transesterification in two steps: Kinetic effect or shift in the equilibrium conversion?
title_sort Biodiesel production by transesterification in two steps: Kinetic effect or shift in the equilibrium conversion?
dc.creator.none.fl_str_mv Pisarello Milesi, Maria Laura
Maquirriain, Maira Alejandra
Sacripanti Olalla, Paula
Rossi, Valentina
Querini, Carlos Alberto
author Pisarello Milesi, Maria Laura
author_facet Pisarello Milesi, Maria Laura
Maquirriain, Maira Alejandra
Sacripanti Olalla, Paula
Rossi, Valentina
Querini, Carlos Alberto
author_role author
author2 Maquirriain, Maira Alejandra
Sacripanti Olalla, Paula
Rossi, Valentina
Querini, Carlos Alberto
author2_role author
author
author
author
dc.subject.none.fl_str_mv BIODIESEL
DISTRIBUTION EQUILIBRIUM
KINETICS
TWO-STEPS REACTION
topic BIODIESEL
DISTRIBUTION EQUILIBRIUM
KINETICS
TWO-STEPS REACTION
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv In continuous biodiesel production plants, practically all technologies carry out the transesterification in two steps, feeding methanol and catalyst in each of them. The glycerine phase is separated after the first one. The explanation normally given to justify this procedure is that the glycerine separation after the first step shifts the equilibrium towards products, thus increasing the conversion. The reacting mixture is a system with partial miscibility, being the compositions of the biodiesel and glycerine phases different depending upon the global composition of methanol, catalyst, soaps, water, etc. The results presented in this work make it possible to conclude that the most important cause of the conversion improvement when performing the reaction in two steps is a change in the catalyst and methanol distribution between the biodiesel and glycerine phases. The separation of the glycerine phase leads to a positive impact on the kinetic of the second reaction step, since it allows that both the catalyst and the methanol concentrate in the biodiesel phase. This is due to the small quantity of glycerine phase present in the system in the second reaction step. Therefore, the higher concentrations of catalyst and methanol in the biodiesel phase significantly increase the rate of transesterification and decrease the mass transfer limitations.
Fil: Pisarello Milesi, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
Fil: Maquirriain, Maira Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
Fil: Sacripanti Olalla, Paula. Universidad Nacional del Litoral; Argentina
Fil: Rossi, Valentina. Universidad Nacional del Litoral; Argentina
Fil: Querini, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
description In continuous biodiesel production plants, practically all technologies carry out the transesterification in two steps, feeding methanol and catalyst in each of them. The glycerine phase is separated after the first one. The explanation normally given to justify this procedure is that the glycerine separation after the first step shifts the equilibrium towards products, thus increasing the conversion. The reacting mixture is a system with partial miscibility, being the compositions of the biodiesel and glycerine phases different depending upon the global composition of methanol, catalyst, soaps, water, etc. The results presented in this work make it possible to conclude that the most important cause of the conversion improvement when performing the reaction in two steps is a change in the catalyst and methanol distribution between the biodiesel and glycerine phases. The separation of the glycerine phase leads to a positive impact on the kinetic of the second reaction step, since it allows that both the catalyst and the methanol concentrate in the biodiesel phase. This is due to the small quantity of glycerine phase present in the system in the second reaction step. Therefore, the higher concentrations of catalyst and methanol in the biodiesel phase significantly increase the rate of transesterification and decrease the mass transfer limitations.
publishDate 2018
dc.date.none.fl_str_mv 2018-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/88243
Pisarello Milesi, Maria Laura; Maquirriain, Maira Alejandra; Sacripanti Olalla, Paula; Rossi, Valentina; Querini, Carlos Alberto; Biodiesel production by transesterification in two steps: Kinetic effect or shift in the equilibrium conversion?; Elsevier Science; Fuel Processing Technology; 181; 12-2018; 244-251
0378-3820
CONICET Digital
CONICET
url http://hdl.handle.net/11336/88243
identifier_str_mv Pisarello Milesi, Maria Laura; Maquirriain, Maira Alejandra; Sacripanti Olalla, Paula; Rossi, Valentina; Querini, Carlos Alberto; Biodiesel production by transesterification in two steps: Kinetic effect or shift in the equilibrium conversion?; Elsevier Science; Fuel Processing Technology; 181; 12-2018; 244-251
0378-3820
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0378382018312979?via%3Dihub
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.fuproc.2018.09.028
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1844613042346655744
score 13.070432

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