Freezing point depression of electrolyte solutions / Hooman Haghighi in Industrial & engineering chemistry research, Vol. 47 n°11 (Juin 2008)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 47 n°11 (Juin 2008) . - p. 3983–3989 Titre : Freezing point depression of electrolyte solutions : experimental measurements and modeling using the cubic-plus-association equation of state Type de document : texte imprimé Auteurs : Hooman Haghighi, Auteur ; Antonin Chapoy, Auteur ; Bahman Tohidi, Auteur Année de publication : 2008 Article en page(s) : p. 3983–3989 Note générale : Bibliogr. p. 3988-3989 Langues : Anglais (eng) Mots-clés : Electrolyte solutions  Freezing point depressions Résumé : New experimental freezing point depressions of six binary solutions (H2O−NaCl, H2O−CaCl2, H2O−MgCl2, H2O−KOH, H2O−ZnCl2, and H2O−ZnBr2) and four ternary solutions (H2O−NaC1−KCl, H2O−NaC1−CaCl2, H2O−KC1−CaCl2, and H2O−NaC1−MgCl2) have been measured by a reliable differential temperature technique. The available experimental literature data on the freezing point depression in addition to the vapor pressure data of aqueous electrolyte solutions for NaCl, KCl, KOH, CaCl2, MgCl2, CaBr2, ZnCl2, and ZnBr2 have been used to optimize binary interaction parameters between salts and water. The fugacity of water in salt-free aqueous phase has been modeled by the cubic-plus-association (CPA) equation of state. The Debye–Hückel electrostatic term has been used for taking into account the effect of salt on the fugacity of water when electrolytes are present. Model predictions are validated against independent experimental data generated in this work for both single and mixed electrolyte solutions and a good agreement between predictions and experimental data is observed, supporting the reliability of the developed model. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800017e [article] Freezing point depression of electrolyte solutions : experimental measurements and modeling using the cubic-plus-association equation of state [texte imprimé] / Hooman Haghighi, Auteur ; Antonin Chapoy, Auteur ; Bahman Tohidi, Auteur . - 2008 . - p. 3983–3989. Bibliogr. p. 3988-3989 Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 n°11 (Juin 2008) . - p. 3983–3989 Mots-clés : Electrolyte solutions  Freezing point depressions Résumé : New experimental freezing point depressions of six binary solutions (H2O−NaCl, H2O−CaCl2, H2O−MgCl2, H2O−KOH, H2O−ZnCl2, and H2O−ZnBr2) and four ternary solutions (H2O−NaC1−KCl, H2O−NaC1−CaCl2, H2O−KC1−CaCl2, and H2O−NaC1−MgCl2) have been measured by a reliable differential temperature technique. The available experimental literature data on the freezing point depression in addition to the vapor pressure data of aqueous electrolyte solutions for NaCl, KCl, KOH, CaCl2, MgCl2, CaBr2, ZnCl2, and ZnBr2 have been used to optimize binary interaction parameters between salts and water. The fugacity of water in salt-free aqueous phase has been modeled by the cubic-plus-association (CPA) equation of state. The Debye–Hückel electrostatic term has been used for taking into account the effect of salt on the fugacity of water when electrolytes are present. Model predictions are validated against independent experimental data generated in this work for both single and mixed electrolyte solutions and a good agreement between predictions and experimental data is observed, supporting the reliability of the developed model. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800017e

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