The influence of urea on the K2CO3 and NH4VO3 solubility in the K2CO3 + NH4VO3 + H2O system

Kiełkowska, Urszula

doi:10.2478/v10026-008-0042-2

Abstract

The influence of urea on the vanadium(V) and potassium ion concentrations in the K₂CO₃ + NH₄VO₃ + H₂O system was determined in the temperature range of 293 K to 313 K. Additionally, the solution density dependence versus the urea concentration was presented. These data are essential for the assessment of optimum operating conditions for the new production process of potassium carbonate.

References

Trypuć, M., Stefanowicz, D., Kiełkowska, U., Łyjak, G. & Torski, Z. (2004). PL Patent No. 186 717.
Search in Google Scholar
Trypuć, M., Torski, Z. & Kiełkowska, U. (2001). Experimental determination of the optimum conditions of KVO₃ synthesis based on KCl and V₂O₅ in the presence of steam. Ind. Eng. Chem. Res. 4, 1022-1025. DOI: 10.1021/ie000588i.10.1021/ie000588i
Search in Google Scholar
Trypuć, M., Białowicz, K. & Mazurek K. (2004). Investigations on the synthesis of KVO₃ and Cl₂ from KCl and V₂O₅ in presence of oxygen. Chem. Eng. Science., 59/6, 1241-1246. DOI:10.1016/j.ces.2003.12.017.10.1016/j.ces.2003.12.017
Search in Google Scholar
Trypuć, M., Kiełkowska, U., Białowicz, K. & Mazurek, K. (2004). Solubility of Ammonium Metavanadate in Potassium Bicarbonate Water Solution. Pol. J. Chem. Tech. 2, 53-55.
Search in Google Scholar
Trypuć, M., Białowicz, K. & Mazurek, K. (2004). Solubility of KVO₃ in water + ammonia solutions from 293 to 323 K. Ind. Eng. Chem. Res. 43, 8403-8406. DOI: 10.1021/ie040128f.10.1021/ie040128f
Search in Google Scholar
Pieniążek, T. (1965). The application of polythermodynamic crystallization method to obtaining potassium sulphate according to the reaction K₂Cl₂ + MgSO₄ = K₂SO₄ + MgCl₂ without/with w presence of urea. Chemia Stosowana. 1A, 51-55.
Search in Google Scholar
Pieniążek, T. (1965). Crystallization in the system K₂Cl₂-MgSO₄-K₂SO₄-MgCl₂-H₂O in the presence of urea and the isotherms of KCl saturated solutions in the temperature 15 and 25°C. Chemia Stosowana. 2A, 177-182.
Search in Google Scholar
Trypuć, M. (1974). The equilibrium investigations in the systems NaCl - NH₃ - CO₂ - H₂O, NaNO₃ - NH₃ - CO₂ - H₂O, KCl - NH₃ - CO₂ - H₂O, KNO₃ - NH₃ - CO₂ - H₂O in the presence of urea, in the triple point P₁, Toruń, Poland: UMK.
Search in Google Scholar
Trypuć, M., Mazurek, K. & Białowiczm K. (2002). Solubility in the NH₄VO₃ + CO(NH₂)₂ + H₂O system from 293 K to 323 K, Fluid Phase Equilibria. 203, 285-293. DOI: 10.1016/S0378-3812(02)00189-9.10.1016/S0378-3812(02)00189-9
Search in Google Scholar
Trypuć, M., Mazurek, K. & Białowicz, K. (2003). Investigations on the solubility in the NaVO₃ + CO(NH₂)₂ + H₂O system from 293 to 323 K, Fluid Phase Equlibria. 211, 151-159. DOI: 10.1016/S0378-3812(03)00151-1.10.1016/S0378-3812(03)00151-1
Search in Google Scholar
Trypuć, M., Mazurek, K. & Białowicz, K. (2002). Solubility in the KVO₃ + CO(NH₂)₂ + H₂O system from 293 to 323 K, Pol. J. Appl. Chem. 1, 47-55.
Search in Google Scholar
Furman, N. H. (1962). Standard Method of Chemical Analysis. Princeton, NJ, USA: Van Nostrand Co.
Search in Google Scholar
Struszyński, M. (1982). Quantitative and technical analysis. Warsaw, Poland: PWT.
Search in Google Scholar
Sandell, G. (1959). Colorimetric metal analysis. New York, USA: Intersc. Publishers.
Search in Google Scholar
Williams, W. J. (1979). Handbook of Anion Determination. London, UK: Butterworth.
Search in Google Scholar
Houben, J. & Weil, Th. (1974). Methoden der organischen Chemie. Stuttgart: Georg Thieme Verlag.
Search in Google Scholar

The influence of urea on the K2CO3 and NH4VO3 solubility in the K2CO3 + NH4VO3 + H2O system

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