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Water and Mean Ionic Activities of Aqueous HNO3 Solutions Calculated from an Extension of the Brunauer-Emmett-Teller (BET) Mo...

Publication Type
Conference Paper
Journal Name
Separation Science and Technology
Publication Date
Page Numbers
1894 to 1900
Volume
45
Issue
12-13
Conference Name
16th Symposium on Separation Science and Technology for Energy Applications
Conference Location
Gatlinburg, Tennessee, United States of America
Conference Date
-

The objective for this research was to employ the extended adsorption isotherm (EAI) to develop a predictive relationship between the activity of H2O (aw) and the mean ionic activity (a +/-) of aqueous HNO3. The EAI model is a calculative approach to the estimation of solutions for activities of highly non-ideal chemical systems and is the collective efforts of Stokes and Robinson, Abraham, and Ally and Braunstein. From previous works of the HNO3-H2O system by Rains et al., a predictive model of relevant aqueous phase activities was developed that only needs knowledge of composition and temperature of the HNO3 solution.