Solubility in the reciprocal quaternary K+-Na+-SO42−-VO3−-H2O system at (293.15 and 313.15)K

The equilibrium solubility studies of the Na2SO4+KVO3+H2O system at 293.15 and 313.15K have been performed. Based on the results, the equilibrium plots for the system in a planar projection have been obtained according to the Jänecke method. The plots enable the determination of the optimal conditio...

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Bibliographic Details
Published in:Fluid phase equilibria 2015-10, Vol.404, p.75-80
Main Authors: Drużyński, Sebastian, Mazurek, Krzysztof, Kiełkowska, Urszula, Szalla, Aleksandra, Wróbel, Adriana
Format: Article
Language:English
Subjects:
Double salt
Equilibrium state
Recycling
Solubility isotherms
Spent vanadium catalyst
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Summary:The equilibrium solubility studies of the Na2SO4+KVO3+H2O system at 293.15 and 313.15K have been performed. Based on the results, the equilibrium plots for the system in a planar projection have been obtained according to the Jänecke method. The plots enable the determination of the optimal conditions for the conversion reaction of potassium metavanadate into complex salt sodium, potassium metavanadate with the use of sodium sulfate. The aim of the process is the recovery of vanadium compounds from solutions obtained after leaching spent vanadium catalyst.
ISSN:0378-3812
1879-0224
DOI:10.1016/j.fluid.2015.06.036