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Author(s): Luísa A. Ferreira
Simão P. Pinho
Eugénia A. Macedo
Title: Solubility of Amino Acids in Mixed Solvent Systems
Issue Date: 2008
Abstract: The solubilities of L-serine, L-threonine and L-isoleucine in the aqueoussystems of ethanol, 1-propanol and 2-propanol were measured in thetemperature range between 298.15 K and 333.15 K by means of agravimetric method and a spectrophotometric technique based on aninhydrin reaction. The solubility data from this work and from literaturewere used to explore the potentialities of the application of the excesssolubility approach with the NRTL [1], modified NRTL [2], modifiedUNIQUAC [3, 4] equations and the model presented by Gude et al. (1996)[5, 6]. These four models give a global average relative deviation of 12.2 %,12.0 %, 15.1 %, and 16.2 % for correlation and 16.3 %, 14.6 %, 27.3 %, and22.0 % for prediction, respectively.
Subject: Outras ciências da engenharia e tecnologias
Other engineering and technologies
Scientific areas: Ciências da engenharia e tecnologias::Outras ciências da engenharia e tecnologias
Engineering and technology::Other engineering and technologies
Source: 23rd European Symposium on Applied Thermodynamics -ESAT2008.
Document Type: Artigo em Livro de Atas de Conferência Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Livro de Atas de Conferência Internacional

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