Main Title |
Influence of Reaction Reversibility on Continuous-Flow Extraction by Emulsion Liquid Membranes. |
Author |
Reed, D. L. ;
Bunge, A. L. ;
Noble, R. D. ;
|
CORP Author |
National Bureau of Standards (NEL), Boulder, CO. Chemical Engineering Science Div.;Environmental Protection Agency, Washington, DC. Grants Administration Div. |
Publisher |
1987 |
Year Published |
1987 |
Report Number |
EPA-R-811247; |
Stock Number |
PB89-176481 |
Additional Subjects |
Solvent extraction ;
Mathematical models ;
Liquid filters ;
Membranes ;
Chemical reactivity ;
Chemical equilibrium ;
Performance evaluation ;
Irreversible processes ;
Emulsions ;
Continuum mechanics ;
Reprints ;
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB89-176481 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
21p |
Abstract |
The paper examines theoretically the continuous flow extraction by emulsion globules in which the transferring solute reacts with an internal reagent. The reversible reaction model is used to predict performance. These results are compared with advancing front calculations which assume an irreversible reaction. A simple criterion which indicates the importance of reaction reversibility on performance is described. Calculations show that assuming an irreversible reaction can lead to serious underdesign when low solute concentrations are required. For low solute concentrations an exact analytical solution to the reversible reaction problem is possible. For moderate solute concentrations, the authors have developed an easy parameter adjustment of the advancing front model which reasonably approximates expected extraction rates. |