Comment on “Study on Phase Equilibrium of the K⁺, Mg²⁺//Cl^–, SO₄^2– + H₂O Quaternary System at 353.15 K and Its Application”

Abstract

The experimental investigation of phase equilibria in this system at elevated temperatures is essential for improving the thermodynamic models describing the aqueous geochemistry of oceanic salts as well as for industrial processing of oceanic salt deposits. 2 However, an inspection of the article by Kang et al. 1 revealed that the experimental data, the thermodynamic model, and the presentation of the results do not meet scientific standards. In the following sections, we will comment on these three aspects (Table numbers refer to the paper of Kang et al.).

Determination and analysis of solid–liquid equilibria for ternary systems Na2SO4–H2O2–H2O and Na2CO3–H2O2–H2O at 5 °C

“…The amount of sodium carbonate and hydrogen peroxide was changed continuously to obtain different liquid-phase composition points, and the complete phase equilibrium curve was plotted. [12][13][14][15][16]…”