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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
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]
Total Authors: 7
Affiliation:
[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
Total Affiliations: 3
Document type: Journal article
Source: FUEL; v. 226, p. 87-92, AUG 15 2018.
Web of Science Citations: 10
Abstract

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)

FAPESP's process: 16/08566-1 - Phase equilibrium thermodynamics for the improvement of physical properties of food bioproducts and their prediction in industrial and digestive processes
Grantee:Guilherme José Maximo
Support Opportunities: Regular Research Grants
FAPESP's process: 12/05027-1 - Solid-liquid equilibrium of fatty compounds and biodiesel flash point
Grantee:Mariana Conceição da Costa
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Young Investigators Grants
FAPESP's process: 14/21252-0 - Equilibrium and production processes of biofuels and bioproducts
Grantee:Antonio José de Almeida Meirelles
Support Opportunities: Research Projects - Thematic Grants