Abstract
The modified adsorption isotherm model, incorporating the Stokes-Robinson modification of the Brunauer-Emmett-Teller (BET) adsorption isotherm, is used to calculate the activity of the organic acid and water, and the liquidus curve. This is the first known use of the modified adsorption isotherm for estimation of thermodynamic information for aqueous organic acid solutions and one of few works using the model for predicting information for aqueous acids in general. The method described here represents a simplified approach to estimating thermodynamic properties. The model offers some improvement over regular solution theory, but perhaps more importantly offers a method for adjusting thermodynamic properties in the presence of other components in the future. While other models such as UNIQUAC may prove to be more accurate, this model provides satisfactory results with more ease.
| Original language | English |
|---|---|
| Pages (from-to) | 2548-2556 |
| Number of pages | 9 |
| Journal | Separation Science and Technology (Philadelphia) |
| Volume | 43 |
| Issue number | 9-10 |
| DOIs | |
| State | Published - Jul 2008 |
| Externally published | Yes |
Funding
This work was supported by the US Department of Energy by contract DE-FC07-06ID14735 and by the Oak Ridge National Laboratory (ORNL); ORNL is managed and operated by UT-Battelle, LCC under DOE Contract No. DE-AC05-000R22725 with ORNL.
| Funders | Funder number |
|---|---|
| U.S. Department of Energy | DE-FC07-06ID14735, DE-AC05-000R22725 |
| Oak Ridge National Laboratory | |
| Robert H. Lurie Comprehensive Cancer Center | |
| UT-Battelle |
Keywords
- Acetic acid
- Activity coefficients
- Adsorption isotherm
- Aqueous electrolytes
- Brunauer-Emmett-Teller (BET)
- Eutectic
- Liquidus curve