Prediction of cloud points of biodiesel

J. C.A. Lopes (1) , L. Boros (2) , M.A. Krahenbuhl (3) , Antonio J.A. Meirelles (4) , Jean-Luc Daridon (5) , Jérôme Pauly (5) , Isabel M. Marrucho (1) , J. A.P. Coutinho (1)

1 CICECO - Centro de Investigacao em Materiais Ceramicaos e Compositos
2 LPT - Department of Chemical Processes (DPQ)
3 LPT Departement of chemical Processes
4 EXTRAE,Departement of food engineering
5 TEFC - Thermodynamique et Energétique des fluides complexes

The predictive UNIQUAC model, previously applied with success to the description of wax formation in fossil fuels, is extended here to the modeling of the precipitation of saturated and unsaturated fatty acid methyl/ethyl esters. Correlations for the thermophysical properties of the fatty acid esters are proposed, and the model is evaluated against experimental data of binary mixtures. Despite the lack of accurate data for the cloud points of biodiesel, the results obtained here allow for an adequate evaluation of the model proposed, showing that it can produce good predictions of the cloud points of mixtures of fatty acid esters.

Domaines: Chimie-Physique [physics.chem-ph]

J. C.A. Lopes, L. Boros, M.A. Krahenbuhl, Antonio J.A. Meirelles, Jean-Luc Daridon, et al.. Prediction of cloud points of biodiesel. Energy & Fuels, 2008, 22 (2), pp.747-752. ⟨10.1021/ef700436d⟩. ⟨hal-00365389⟩