Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/858
Type: Artigo de periódico
Title: Prediction of Viscosities of Fatty Compounds and Biodiesel by Group Contribution
Author: CERIANI, Roberta
GONCALVES, Cintia B.
COUTINHO, Joao A. P.
Abstract: In the present work, a group contribution method is proposed for the estimation of viscosity of fatty compounds and biodiesel esters as a function of the temperature. The databank used for regression of the group contribution parameters (1070 values for 65 types of substances) included fatty compounds, such as fatty acids, methyl and ethyl esters and alcohols, tri- and diacylglycerols, and glycerol. The inclusion of new experimental data for fatty esters, a partial acylglycerol, and glycerol allowed for a further refinement in the performance of this methodology in comparison to a prior group contribution equation (Ceriani, R.; Goncalves, C. B.; Rabelo, J.; Caruso, M.; Cunha, A. C. C.; Cavaleri, F. W.; Batista, E. A. C.; Meirelles, A. J. A. Group contribution model for predicting viscosity of fatty compounds. J. Chem. Eng. Data 2007, 52, 965-972) for all classes of fatty compounds. Besides, the influence of small concentrations of partial acylglycerols, intermediate compounds in the transesterification reaction, in the viscosity of biodiesels was also investigated.
Country: Estados Unidos
Editor: AMER CHEMICAL SOC
Citation: ENERGY & FUELS, v.25, n.8, p.3712-3717, 2011
Rights: fechado
Identifier DOI: 10.1021/ef200669k
Address: http://dx.doi.org/10.1021/ef200669k
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Date Issue: 2011
Appears in Collections:FEQ - Artigos e Materiais de Revistas Científicas

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