Production of biodiesel through esterification catalyzed by Ionic liquids

Detalhes bibliográficos
Autor(a) principal: Alimova, Irana
Data de Publicação: 2016
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10198/13173
Resumo: Biodiesel is an alternative diesel fuel that is produced from vegetable oils and animal fats. Currently, most biodiesel is made from oils, methanol, and an alkaline catalyst. Conventional catalysts is commonly used for catalyzing esterification of fatty acid to produce biodiesel. However, a better and greener method was found. An ionic liquid (IL) is a molten salt consisting of a cation and an anion, with low melting temperature. It offers a better solution than sulfuric acid, because it can be recycled and reused in subsequent runs after recovery steps. In this study, a Brønsted acidic IL, 1-butyl-3-methylimidazolium hydrogen sulfate ([BMIM][HSO4]) was used as a catalyst in the esterification of oleic acid with methanol into biodiesel. The effect of different operation parameters such as methanol to oil molar ratio, amount of catalyst, reaction temperature, and reaction time were tested. The optimum conditions for esterification of oleic acid were identified as oleic acid/methanol molar ratio of 1/10, amount of catalyst 10 wt%, reaction time of 4 h, and reaction temperature of 90oC. FAME content of produced biodiesel was analyzed and confirmed using GC chromatography.
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spelling Production of biodiesel through esterification catalyzed by Ionic liquidsBiodieselOptimizationEsterificationIonic liquidOtimizaçãoEsterificaçãoDomínio/Área Científica::Engenharia e Tecnologia::Engenharia QuímicaBiodiesel is an alternative diesel fuel that is produced from vegetable oils and animal fats. Currently, most biodiesel is made from oils, methanol, and an alkaline catalyst. Conventional catalysts is commonly used for catalyzing esterification of fatty acid to produce biodiesel. However, a better and greener method was found. An ionic liquid (IL) is a molten salt consisting of a cation and an anion, with low melting temperature. It offers a better solution than sulfuric acid, because it can be recycled and reused in subsequent runs after recovery steps. In this study, a Brønsted acidic IL, 1-butyl-3-methylimidazolium hydrogen sulfate ([BMIM][HSO4]) was used as a catalyst in the esterification of oleic acid with methanol into biodiesel. The effect of different operation parameters such as methanol to oil molar ratio, amount of catalyst, reaction temperature, and reaction time were tested. The optimum conditions for esterification of oleic acid were identified as oleic acid/methanol molar ratio of 1/10, amount of catalyst 10 wt%, reaction time of 4 h, and reaction temperature of 90oC. FAME content of produced biodiesel was analyzed and confirmed using GC chromatography.O Biodiesel é uma alternativa interessante aos combustíveis fósseis, sendo produzido a partir de óleos vegetais e/ou gorduras animais. Atualmente, a maior parte do biodiesel é produzido utilizando óleos, metanol e um catalisador alcalino. Os catalisadores tradicionais são normalmente usados em catálise ácida de ácidos gordos para produzir biodiesel. Contudo, um método alternativo e mais “amigo” do ambiente tem sido recentemente, bastante estudado. Os líquidos iónicos são sais fundidos/líquidos constituídos por um catião e por um anião com pontos de fusão reduzidos. Estes compostos são uma solução melhor quando comparados com o ácido sulfúrico, podendo ser reciclados e reutilizados. Neste trabalho utilizam-se como catalisadores, ácido sulfúrico, e um líquido iónico: o 1-butyl-3-methylimidazolium hydrogen sulfate ([BMIM][HSO4]). Sendo ambos utilizados como catalisadores na esterificação do ácido oleico com metanol para produzir biodiesel. O principal objetivo deste trabalho consistiu em estudar a influência de alguns parâmetros de operação na produção de biodiesel, como seja a razão molar metanol/ácido oleico, a quantidade de catalisador, a temperatura da reação e o tempo de reação. O estudo realizado permitiu identificar as condições ótimas para cada um destes parâmetros: razão molar ácido oleico/metanol de 1/10, quantidade de catalisador de 10% em massa, tempo de reação de 4 h e temperatura de reação de 90oC. O conteúdo em ésteres metílicos de ácidos gordos (FAMEs) do biodiesel produzido foi igualmente caracterizado por cromatografia gasosa quer qualitativamente quer quantitativamente.Brito, PauloRibeiro, António E.Queiroz, AnaBiblioteca Digital do IPBAlimova, Irana2016-09-02T11:07:10Z201620162016-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10198/13173TID:201456320enginfo: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:RCAAP2023-11-21T10:30:58Zoai:bibliotecadigital.ipb.pt:10198/13173Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T23:03:22.202329Repositório 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 Production of biodiesel through esterification catalyzed by Ionic liquids
title Production of biodiesel through esterification catalyzed by Ionic liquids
spellingShingle Production of biodiesel through esterification catalyzed by Ionic liquids
Alimova, Irana
Biodiesel
Optimization
Esterification
Ionic liquid
Otimização
Esterificação
Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Química
title_short Production of biodiesel through esterification catalyzed by Ionic liquids
title_full Production of biodiesel through esterification catalyzed by Ionic liquids
title_fullStr Production of biodiesel through esterification catalyzed by Ionic liquids
title_full_unstemmed Production of biodiesel through esterification catalyzed by Ionic liquids
title_sort Production of biodiesel through esterification catalyzed by Ionic liquids
author Alimova, Irana
author_facet Alimova, Irana
author_role author
dc.contributor.none.fl_str_mv Brito, Paulo
Ribeiro, António E.
Queiroz, Ana
Biblioteca Digital do IPB
dc.contributor.author.fl_str_mv Alimova, Irana
dc.subject.por.fl_str_mv Biodiesel
Optimization
Esterification
Ionic liquid
Otimização
Esterificação
Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Química
topic Biodiesel
Optimization
Esterification
Ionic liquid
Otimização
Esterificação
Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Química
description Biodiesel is an alternative diesel fuel that is produced from vegetable oils and animal fats. Currently, most biodiesel is made from oils, methanol, and an alkaline catalyst. Conventional catalysts is commonly used for catalyzing esterification of fatty acid to produce biodiesel. However, a better and greener method was found. An ionic liquid (IL) is a molten salt consisting of a cation and an anion, with low melting temperature. It offers a better solution than sulfuric acid, because it can be recycled and reused in subsequent runs after recovery steps. In this study, a Brønsted acidic IL, 1-butyl-3-methylimidazolium hydrogen sulfate ([BMIM][HSO4]) was used as a catalyst in the esterification of oleic acid with methanol into biodiesel. The effect of different operation parameters such as methanol to oil molar ratio, amount of catalyst, reaction temperature, and reaction time were tested. The optimum conditions for esterification of oleic acid were identified as oleic acid/methanol molar ratio of 1/10, amount of catalyst 10 wt%, reaction time of 4 h, and reaction temperature of 90oC. FAME content of produced biodiesel was analyzed and confirmed using GC chromatography.
publishDate 2016
dc.date.none.fl_str_mv 2016-09-02T11:07:10Z
2016
2016
2016-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10198/13173
TID:201456320
url http://hdl.handle.net/10198/13173
identifier_str_mv TID:201456320
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
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