Computing liquid-liquid phase equilibria: an exercise to understanding the nature of false solutions and how to avoid them

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Title: Computing liquid-liquid phase equilibria: an exercise to understanding the nature of false solutions and how to avoid them
Authors: Olaya, Maria del Mar | Ibarra García, Isabel | Reyes-Labarta, Juan A. | Serrano Cayuelas, María Dolores | Marcilla, Antonio
Research Group/s: Procesado y Pirólisis de Polímeros | Cálculo del Equilibrio entre Fases | Red Social de Innovación Educativa de la Facultad de Ciencias
Center, Department or Service: Universidad de Alicante. Departamento de Ingeniería Química
Keywords: Liquid-liquid equilibrium | LLE | Isoactivity | Gibbs energy of mixing
Knowledge Area: Ingeniería Química
Date Created: 11-Nov-2006
Issue Date: 2007
Publisher: American Society for Engineering Education. Chemical Engineering Division
Citation: OLAYA LÓPEZ, María del Mar, et al. “Computing liquid-liquid phase equilibria: an exercise to understanding the nature of false solutions and how to avoid them”. Chemical Engineering Education. Vol. 41, No. 3 (Summer 2007). ISSN 0009-2479, pp. 218-224
Abstract: An exercise to compute LLE data is presented to illustrate the problems that can arise when the isoactivity equilibrium condition is used in the LLE calculations. A much more efficient condition is obtained when isoactivity is combined with the common tangent line criterion, avoiding false solutions that correspond with very low values of the activity objective function. Also, 3D-figures are represented to discuss the topological aspects of the dimensionless Gibbs energy of mixture function (GM/RT).
Sponsor: Universidad de Alicante (GRE04-17) y Generalitat Valenciana (CV05/191).
URI: http://hdl.handle.net/10045/14277
ISSN: 0009-2479
Language: eng
Type: info:eu-repo/semantics/article
Rights: © Copyright ChE Division of ASEE 2007
Peer Review: si
Appears in Collections:INV - GTP3 - Artículos de Investigación sobre Equilibrio entre Fases
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