Solution properties and salt-solution equilibria in the H-Li-Na-K-Ca-Mg-Cl-H2O system at 25 °C: A new thermodynamic model based on Pitzer's equations

摘要: Abstract A large part of Li production comes from the exploitation saline lakes and salars. Industrial processes for recovery such resources have to deal with highly waters. It is therefore necessary develop knowledge chemistry adapted these contexts. The present work aims a new set Pitzer interaction parameters able describe chemical behavior H-Li-Na-K-Ca-Mg-Cl-H2O system up salt solubility, at 25 °C. In previous work, model was limited H-Li-Na-K-Cl-H2O system. extended here by including Ca Mg, taking into account recently revised allowing thermal properties binary CaCl2-H2O MgCl2-H2O systems be represented. consistent extension thermodynamic database made possible study supersaturated metastable region nine ternary systems, namely X-Ca-Cl, X-Mg-Cl Ca-Mg-Cl (where X = H, Li, Na, K). finally tested on five quaternary systems.