INVESTIGADORES
ANDREATTA Alfonsina Ester
artículos
Título:
PHASE EQUILIBRIA MODELING OF BIODIESEL RELATED MIXTURES USING THE GCA-EOS MODEL
Autor/es:
ALFONSINA ESTER ANDREATTA; RAFAEL LUGO; JEAN-CHARLES DE HEMPTINNE; ESTEBAN A. BRIGNOLE; SUSANA B. BOTTINI
Revista:
FLUID PHASE EQUILIBRIA
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: New York; Año: 2010 vol. 296 p. 75 - 81
ISSN:
0378-3812
Resumen:
In this work, a group-contribution equation of state that takes into account association effects (GCA-EoS) is extended to model the phase behavior of fatty esters (biodiesel) in binary mixtures with glycerol, alcohols and water and ternary mixtures with glycerol and methanol. A new associating group (glycerol hydroxyl group: OHgly) was defined to take into consideration the association effects in the glycerol molecule. Self-association of methanol, water and glycerol and cross-association between methanol-glycerol, alcohol-ester, water-ester and glycerol-ester groups were considered. New pure-group, binary-interaction and association parameters have been determined. The correlations and predictions of the model are found in acceptable agreement with selected experimental data reported in the literature.
