Record Display for the EPA National Library Catalog

RECORD NUMBER: 6 OF 8

OLS Field Name OLS Field Data
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
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Status
NTIS  PB89-176481 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 08/24/1989
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.