Investigating the Solubility of CO2 in the Solution of Aqueous K2CO3 Using Wilson-NRF Model

Authors

  • Reza Moradi M.S. Student, Department of Chemical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran
  • Seyed Hossein Mazloumi Assistant Professor, Department of Chemical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran
Abstract:

Hot potassium carbonate (PC) solution in comparison with amine solution had a decreased energy of regeneration and a high chemical solubility of . To present vapor and liquid equation (VLE) of this system and predict  solubility, the ion specific non-electrolyte Wilson-NRF local composition model (isNWN) was used in this study; the framework of this model was molecular. Therefore, it was suitable for both electrolyte and non-electrolyte solutions. The present research employed the NWN model and the Pitzer-Debye-Hückel theory in order to assess the contribution of the excess Gibbs energy of electrolyte solutions in a short and long range. The data of  solubility in water and the system of aqueous  were correlated in the model considering a temperature range of  and a pressure range of and . The average absolute error of ( ) and ( ) systems were  and  respectively. The results and comparisons with other models proved that the experimental data were exactly correlated in the model.

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Journal title

volume 8  issue 3

pages  89- 100

publication date 2019-07-01

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