2023
DOI: 10.3389/fnuen.2023.1236544
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Solid–liquid equilibria of Sorel phases and Mg(OH)2 in the system Na-Mg-Cl-OH-H2O. Part II: Pitzer modeling

Daniela Freyer,
Melanie Pannach,
Wolfgang Voigt

Abstract: For geochemical calculations of solubility equilibria between Sorel phases, Mg(OH)2, and oceanic salt solutions, the polythermal THEREDA dataset (based on the HMW model at 25°C) was extended. With both models, H+ solution concentrations in equilibrium with Mg(OH)2(s) and the 3-1-8 Sorel phase at 25°C can be calculated in good agreement. In contrast, calculated OH− solution concentrations do not agree. Using the solubility constants (lg Ks) determined up to 60°C in Part I of this work, together with available s… Show more

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