Phase Equilibria in Aluminium Ammonium Sulfate Solutions in Decontamination of Chemical Extraction of Uranium

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J. Nyvlta, J. Hostomskya , V. Hostomskaa, and V. Pavelkab

a Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, Rez u Prahy, b Spolchemie Comp., Usti n. L.


Literature data on and own measurements of phase equilibria in the systems aluminium ammonium sulfate - ammonium sulfate - water, aluminium ammonium sulfate - aluminium sulfate - water, aluminium ammonium sulfate - sulfuric acid - water, and aluminium ammonium sulfate - ammonium ferric sulfate - water were elaborated. Data correlation using the method of relative activity coefficient expansion made it possible to work up the data in a wide range of temperatures. Hydration analysis showed different behaviour of the systems.


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