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Please use this identifier to cite or link to this item: http://hdl.handle.net/10198/1727

Título: Activity coefficient and solubility of amino acids in water by the modified Wilson model
Autor: Xin, Xu
Pinho, Simão
Macedo, Eugénia A.
Palavras-chave: Amino acids
Solubility
Modeling
Modified wilson
Issue Date: 2004
Editora: ACS
Citação: Xin, Xu; Pinho, Simão; Macedo, Eugénia (2004) - Activity coefficient and solubility of amino acids in water by the modified Wilson model. Industrial & Engineering Chemistry. ISSN 1520-5045. 43:12 p.3200-3204
Resumo: The modified Wilson model for the phase behavior of polymer aqueous solutions has been applied to calculate activity coefficients and the solubility of amino acids and small peptides in aqueous solutions. The interaction parameters estimated from the activity coefficients and the solubility data are used to evaluate the solubility of amino acids. The model can accurately represent the activity coefficients of amino acids with only two adjustable parameters per system. It is also used to describe the solubility of several amino acids with satisfactory results. After introduction of the influence of temperature on the energy parameters, it is possible to obtain better predictions of the solubility at higher temperatures than those from UNIFAC and UNIQUAC. The results achieved for the solubility of a mixture of two amino acids are in good agreement with the literature data.
URI: http://hdl.handle.net/10198/1727
ISSN: 1520-5045
Versão do Editor: 43(12)
Appears in Collections:DTQB - Artigos em Revistas Indexados ao ISI

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