MODELING THE EXCESS PROPERTIES OF AQUEOUS SYSTEMS WITH THE PITZER MODEL: APPLICATION TO THE NaOH-H2O BINARY SYSTEM

Abstract : The excess properties of saline solutions (excess enthalpy Hex, excess heat capacity Cpex, excess volume Vex, osmotic coefficient and activity coefficient ) have to be known for designing industrial processes because they control solid-liquid equilibria, energy balances, etc. in wide ranges of temperature and pressure. Such properties can be computed from the derivatives of the excess Gibbs energy of the solution (see Figure 1). For calculating the excess Gibbs energy of a saline solution, several models exist in the literature (Pitzer, eNRTL, LIQUAC …). In the present study, we apply the Pitzer-like equations to the NaOH-H2O system which is of great interest for industrial systems.
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Poster
16ème Congrès de la Société Française de Génie des Procédés, Jul 2017, Nancy, France
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Contributeur : Adeline Lach <>
Soumis le : vendredi 31 mars 2017 - 13:18:40
Dernière modification le : mardi 29 mai 2018 - 12:51:00

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  • HAL Id : hal-01499410, version 1

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Adeline Lach, Laurent André, Arnault Lassin, Mohamed Azaroual, Jean-Paul Serin, et al.. MODELING THE EXCESS PROPERTIES OF AQUEOUS SYSTEMS WITH THE PITZER MODEL: APPLICATION TO THE NaOH-H2O BINARY SYSTEM. 16ème Congrès de la Société Française de Génie des Procédés, Jul 2017, Nancy, France. 〈hal-01499410〉

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