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Please use this identifier to cite or link to this item: http://hdl.handle.net/10198/3171

Título: Representation of solubilities of amino acids using the UNIQUAC model for electrolytes
Autor: Peres, António M.
Macedo, Eugénia A.
Issue Date: 1994
Editora: Elsevier
Citação: Peres, António M.; Macedo, Eugénia A. (1994) - Representation of solubilities of amino acids using the UNIQUAC model for electrolytes. Chemical Engineering Science. ISSN 0009-2509. 49:22, p. 3803-3812
Resumo: A molecular thermodynamic framework for the representation of the solubilities of several binary systems, amino acids-water (nine systems) and peptides-water (five systems), has been developed and tested. The proposed model takes into account simultaneously the chemical and physical equilibrium. The latter is described by the UNIQUAC model combined with a Debye-Huckel term. Molal activity coefficient data from the literature were used in order to estimate the new UNIQUAC parameters. These parameters, together with solubility data, were the basis for the correlation of the solubility product of the different amino acids considered in this work. With this approach, very satisfactory results have been obtained for the representation and prediction of the solubilities of amino acids in water as a function of both temperature and pH.
Arbitragem científica: yes
URI: http://hdl.handle.net/10198/3171
ISSN: 0009-2509
Versão do Editor: http://www.sciencedirect.com/science/journal/00092509
Appears in Collections:PTV - Artigos em Revistas Indexados ao ISI

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