Membrane aging and related phenomena in liquid surfactant membranes process
- Univ. of Gent (Belgium.)
The membrane aging phenomenon and its influences on the kinetics of cobalt(II) permeation by the liquid surfactant membranes (LSM) process has been studied. The experimental results showed that the emulsion formulated from the internal aqueous phase and the membrane (organic phase) of a certain age has far-reaching consequences on the kinetics of metal extraction and emulsion stability. The investigations have revealed that there exists an optimal age and composition of the membrane in which the highest extraction (synergism) and the lowest emulsion swelling are achieved. Analytical and instrumental examinations of the membrane phase during aging have shown various chemical and physical changes as a result of the surfactant decomposition, reaction products precipitation and self-association, and macroemulsion formation. 29 refs., 6 figs., 1 tab.
- OSTI ID:
- 7235948
- Journal Information:
- Separation Science and Technology; (United States), Journal Name: Separation Science and Technology; (United States) Vol. 29:6; ISSN 0149-6395; ISSN SSTEDS
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400105* -- Separation Procedures
400201 -- Chemical & Physicochemical Properties
661300 -- Other Aspects of Physical Science-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AGGLOMERATION
AGING
AQUEOUS SOLUTIONS
CHEMICAL REACTIONS
COBALT COMPOUNDS
COLLOIDS
DECOMPOSITION
DISPERSIONS
EMULSIFICATION
EMULSIONS
EXTRACTION
HYDROLYSIS
LYSIS
MASS TRANSFER
MEMBRANES
MIXTURES
PERMEABILITY
PRECIPITATION
SEPARATION PROCESSES
SOLUTIONS
SOLVOLYSIS
STABILITY
SUPPORTED LIQUID MEMBRANES
SURFACTANTS
SWELLING
SYNERGISM
TRANSITION ELEMENT COMPOUNDS