Improving the cold flow behavior of methyl biodiesel by blending it with ethyl esters

Autor(es)

Maximo, Guilherme J. ^[1] ; Magalhaes, Ana M. S. ^[1] ; Goncalves, Mariana M. ^[2] ; Esperanca, Eduardo S. ^[1] ; Costa, Mariana C. ^[3] ; Meirelles, Antonio J. A. ^[1] ; Coutinho, Joao A. P. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Sch Food Engn, R Monteiro Lobato 80, BR-13083862 Campinas, SP - Brazil

^[2] Univ Aveiro, Chem Dept, CICECO, P-3810193 Aveiro - Portugal

^[3] Univ Estadual Campinas, Sch Chem Engn, Ave Albert Einstein 500, BR-13083852 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: FUEL; v. 226, p. 87-92, AUG 15 2018.
• Citações Web of Science: 10

Resumo

Blending biodiesels is a well-established approach for the lowering of cloud and pour points. The use of ethylic biodiesel, with better cold weather properties due to the lower melting points of ethylic esters, could be another interesting alternative, promoting the utilization of more saturated oils and fats. To study that possibility this work evaluated the melting behavior of 3 mixtures of esters composed of ethyl palmitate, ethyl stearate or ethyl oleate with methyl palmitate. These esters are based on some of the most abundant fatty acids present on soybean and palm oils, two of the most expressive vegetable oils sources for biodiesel production. The solid-liquid phase diagrams in the entire concentration range of these 3 systems were evaluated with all phase transitions reported. The systems composed of saturated ethyl/methyl esters showed a very complex behavior, with the formation of solid solutions (organic alloys), peritectic reactions, and metatectic transitions. The liquidus lines of these systems were compared with the equivalent mixtures based on methyl esters alone showing that lower melting temperatures were achieved. Therefore blends between ethyl esters and methyl esters are suggested to improve the low temperature behavior of biodiesels. (AU)

• Processo FAPESP: 14/21252-0 - Equilíbrio e processos de produção de biocombustíveis e bioprodutos
• Beneficiário: Antonio José de Almeida Meirelles
• Linha de fomento: Auxílio à Pesquisa - Temático
• Processo FAPESP: 16/08566-1 - Termodinâmica do equilíbrio de fases para o melhoramento das propriedades físicas de bioprodutos alimentícios e sua predição em processos industriais e digestivos
• Beneficiário: Guilherme José Maximo
• Linha de fomento: Auxílio à Pesquisa - Regular
• Processo FAPESP: 12/05027-1 - Equilíbrio sólido-líquido de compostos graxos e ponto de fulgor de biodiesel
• Beneficiário: Mariana Conceição da Costa
• Linha de fomento: Auxílio à Pesquisa - Programa BIOEN - Apoio a Jovens Pesquisadores