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Separation of the azeotropic mixtures

Research areas


Separation of the azeotropic mixtures using ionic liquids
:

  • Measurements of activity coefficients at infinite dilution,
  • Determination of selectivity and capacity for the butanol/water separation from activity coefficients at infinite dilution,
  • Studies of fundamental thermodynamic functions of ionic liquids, temperature and enthalpy of melting, temperature of glass transition, viscosity, density, surface tension,
  • Studies of phase equilibria in binary and ternary ternary systems with ionic liquids,
  • Determination of selectivity and solute distribution ratio for butanol/water from the measurements of ternary systems such as {ionic liquid + ethanol + heptane}.


Separation of close boiling mixtures in petrochemistry
:

  • Measurements of activity coefficients at infinite dilution,
  • Determination of selectivity and capacity for the ethylbenzene/styrene, or hexane/hexene separation from activity coefficients at infinite dilution,
  • Studies of fundamental thermodynamic functions of ionic liquids, temperature and enthalpy of melting, temperature of glass transition, viscosity, density, surface tension,
  • Studies of phase equilibria in binary and ternary ternary systems with ionic liquids,
  • Determination of selectivity and solute distribution ratio for butanol/water from the measurements of ternary systems such as {ionic liquid + ethylbenzene + styrene} or {ionic liquid +hexane + hexene}.


Experience

  • Proposals of new technologies using ionic liquids,
  • The selection of save and functional extrahents,
  • Description of the recovery methods of extrahents and purification of final products.


1. Domańska U.,Wiśniewska A., Dąbrowski Z., Karpińska M., Separation of binary mixtures based on limiting activity coefficients data using specific ammonium-based ionic liquid and modelling of thermodynamic functions, Fluid Phase Equilib. 2018, 460, 155-161.

2. Domańska U., Wiśniewska A. Dąbrowski Z., Więckowski M., Separation of heptane/ethanol with ionic liquids. Ternary LLE data, J. Mol. Liquids 2018, 255, 504-512.

3. Domańska U., Wlazło M., Karpińska M., Zawadzki M., Separation of binary mixtures hexane/hex-1-ene. cyclohexane/cyclohexene andethylbenzene/styrene based on limiting activity coefficients, J. Chem Thermodyn. 2017, 110, 227-236.

4. Karpińska M., Wlazło, M., Domańska, U., Investigation on the ethylbenzene/styrene separation efficiency with ionic liquids in liquid-liquid extraction. Chem. Eng. Res. Des. 2017, 128, 214-220.

5. Karpińska M., Wlazło M., Zawadzki M., Domańska U., Liquid-liquid separation of hexane/hex-1-ene and cyclohexane/cyclohexene by dicyanamide-basedionic liquids, J. Chem. Thermodyn, 2018,116, 299-308.


Contact

Prof. Urszula Domańska-Żelazna, D. Sc., Chem. Eng.

tel. +48 22 568 20 63, +48 22 568 21 93, +48 22 568 20 36