Agradecimentos: This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior Brasil (CAPES) Finance Code 001. The authors also would like to thank national funding agencies FAPESP [2012/05027-1,
2014/21252-0], CNPq [310272/2017-3, 140723/2016-1], and...

Agradecimentos: This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior Brasil (CAPES) Finance Code 001. The authors also would like to thank national funding agencies FAPESP [2012/05027-1,
2014/21252-0], CNPq [310272/2017-3, 140723/2016-1], and FAEPEX/UNICAMP for the financial support. The authors thank Espaco da Escrita ̧ Pro-Reitora de Pesquisa UNICAMPfor the language services provided

The flash point (FP) of binary mixtures formed by fatty acid methyl esters (FAMEs), which are the major compounds of methyl biodiesel, is investigated in this study, and the nonideality of the liquid phase was calculated with the ideal model, UNIFAC, UNIFAC-Dortmund (UNIFAC-Do), and NIST-UNIFAC...

The flash point (FP) of binary mixtures formed by fatty acid methyl esters (FAMEs), which are the major compounds of methyl biodiesel, is investigated in this study, and the nonideality of the liquid phase was calculated with the ideal model, UNIFAC, UNIFAC-Dortmund (UNIFAC-Do), and NIST-UNIFAC models. The different models used to calculate the activity coefficient were compared through the FP result that was estimated using Liaw's approach. The experimental results show that the larger the carbon chain of FAME is, or the richer the solution in the heavier compound is, the higher the FP of the compound and solution is. The results also show that the ideal model is the best one between those tested in this study because the solutions studied here can be considered ideal, and the calculated FP temperature of the binary mixtures presented an average root-mean-square deviation equal to 0.67% using this model. It was observed as an abrupt decrease in the FP value of the mixture with small addictions of the light compound in the region that is rich in the heavier compound, remarkably when the difference in the length of the alkyl carbon chain of these components is large. This behavior is an important factor that must be considered in safety and transportation cases

CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ

310272/2017-3; 140723/2016-1

FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP

2012/05027-1; 2014/21252-0

COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPES

001

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