Pervaporation of aqueous ethanol mixtures through poly(dimethyl siloxane) membranes
- Manhattan Coll., Riverdale, NY (United States)
The separation of ethanol/water mixtures by pervaporation with a poly(dimethyl siloxane) membrane has been studied. The membrane exhibited ethanol selectivity during all process runs. Investigations focused on the effects of temperature and permeate-side pressure on membrane transport with dilute ethanol feed solutions. An increase in temperature increased the flux exponentially but had little effect on selectivity. As the permeate-side pressure was increased, the flux decreased. Selectivity did not change appreciably over the pressure range evaluated. Studies also analyzed the effect of feed concentrations on flux and selectivity. Flux increased and selectivity decreased as the ethanol feed concentration increased. The permeate concentration profile is superior to a standard vapor-liquid equilibrium curve at low ethanol feed concentrations.
- OSTI ID:
- 5648069
- Journal Information:
- Separation Science and Technology; (United States), Journal Name: Separation Science and Technology; (United States) Vol. 25:9-10; ISSN SSTED; ISSN 0149-6395
- Country of Publication:
- United States
- Language:
- English
Similar Records
Separation of tetrahydrofuran from aqueous mixtures by pervaporation
Evaluation of PTMSP membranes in achieving enhanced ethanol removal from fermentations by pervaporation
Related Subjects
100200* -- Synthetic Fuels-- Production-- (1990-)
ALCOHOLS
BENCH-SCALE EXPERIMENTS
DATA
DISPERSIONS
ETHANOL
EXPERIMENTAL DATA
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
MEMBRANE TRANSPORT
MEMBRANES
MIXTURES
NUMERICAL DATA
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PERFORMANCE TESTING
PRESSURE DEPENDENCE
QUANTITY RATIO
TEMPERATURE DEPENDENCE
TESTING
WATER