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Flash point prediction with UNIFAC type models of ethylic biodiesel and binary/ternary mixtures of FAEEs

Costa do Nascimento, Débora and Dorighello Carareto, Natália Daniele and Marinho Barbosa Neto, Antonio and Gerbaud, Vincent and da Costa, Mariana Conceição Flash point prediction with UNIFAC type models of ethylic biodiesel and binary/ternary mixtures of FAEEs. (2020) Fuel, 281. 118717. ISSN 0016-2361

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Official URL: https://doi.org/10.1016/j.fuel.2020.118717

Abstract

In order to guarantee safe handling of a combustible liquid, such as biodiesel, it is important to be aware of its Flash Point (FP). Thus, the present study focused on FP experimental measurement and thermodynamic correlation of binary and ternary mixtures of saturated or unsaturated fatty acid ethyl esters (FAEEs) as surrogates for biodiesel. FP of different types of ethylic biodiesel in terms of feedstock (canola, corn, cotton and soy oils) were also measured and compared with the predicted values. Experiments were carried out in agreement with the standard closed cup procedure ASTM D6450. Liaw’s model was applied to FP prediction, with liquid phase non-ideality description accounted for by UNIFAC group contribution models (Original UNIFAC, UNIFAC-Dortmund and UNIFAC-Bessa with revised parameters for fats). FP prediction accounting for non-ideality proved to be accurate, with some difference between the UNIFAC type models and Root Mean Square Deviations (RMSD) varying from 0.27 K to 3.95 K for binary and ternary mixtures.

Item Type:Article
HAL Id:hal-03115520
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Universidade Do Estado De Santa Catarina - UDESC (BRAZIL)
Other partners > Universidade Estadual de Campinas - Unicamp (BRAZIL)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
French research institutions > Université polytechnique des Hauts-de-France - UPHF (FRANCE)
Laboratory name:
Funders:
CNPq - FAPESP - FAEPEX/UNICAMP
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Deposited On:19 Jan 2021 16:16

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