Modeling of heavy metal salt solubility using the extended UNIQUAC model

Authors

  • Maria C. Iliuta,

    1. Dept. of Chemical Engineering, Institut for Kemiteknik IVC-SEP, Technical University of Denmark, DK-2800 Lyngby, Denmark
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    • M. C. Iliuta is currently on leave from the University “Politehnica” of Bucharest, Faculty of Industrial Chemistry, Department of Applied Physical Chemistry, Polizu1, RO-78126 Bucharest, Romania.

  • Kaj Thomsen,

    Corresponding author
    1. Dept. of Chemical Engineering, Institut for Kemiteknik IVC-SEP, Technical University of Denmark, DK-2800 Lyngby, Denmark
    • Dept. of Chemical Engineering, Institut for Kemiteknik IVC-SEP, Technical University of Denmark, DK-2800 Lyngby, Denmark
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  • Peter Rasmussen

    1. Dept. of Chemical Engineering, Institut for Kemiteknik IVC-SEP, Technical University of Denmark, DK-2800 Lyngby, Denmark
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Abstract

Solid–liquid equilibria in complex aqueous systems involving a heavy metal cation (Mn2+, Fe2+, Co2+, Ni2+, Cu2+, or Zn2+) and one or more ions for which Extended UNIQUAC parameters have been published previously are modeled using the Extended UNIQUAC model. Model parameters are determined on the basis of a data bank with more than 4,000 experimental data points for binary and ternary aqueous systems. The parameters are generally valid in the temperature range from the freezing point to the boiling point of the respective solutions.

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