Abstract
Freezing point depression (FDP) modeling was performed for selected aqueous nitrate and sulfate salt solutions to evaluate Pitzer ion interaction parameter values at 273.15K. 1-1 and 1-2 electrolyte solutions of NaNO3, KNO3, NH4NO3, Na2SO4, K2SO4, and (NH4)2SO4 were studied. New Pitzer parameter values of β0, β1, and Cφ{symbol} were obtained for the studied electrolyte solutions. FDP modeling was also used to determine temperature derivatives of interaction parameters for the Pitzer model for selected salt solutions. Osmotic and activity coefficients using the new parameter values are also presented.
Original language | English |
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Pages (from-to) | 1340-1346 |
Number of pages | 7 |
Journal | Chemical Engineering and Technology |
Volume | 37 |
Issue number | 8 |
DOIs | |
Publication status | Published - 2014 |
MoE publication type | A1 Journal article-refereed |
Keywords
- Freeze crystallization
- Freezing point depression
- Ion interaction parameter
- Pitzer model
- Solid-liquid equilibrium