Pervaporation separation of ethanol-water mixtures using polyethylenimine composite membranes
Patent
·
OSTI ID:7012203
Synthetic, organic, polymeric membranes were prepared from polyethylenimine for use with pervaporation apparatus in the separation of ethanol-water mixtures. The polymeric material was prepared in dilute aqueous solution and coated onto a polysulfone support film, from which excess polymeric material was subsequently removed. Cross-links were then generated by limited exposure to toluene-2,4-diisocyanate solution, after which the prepared membrane was heat-cured. The resulting membrane structures showed high selectivity in permeating ethanol or water over a wide range of feed concentrations.
- DOE Contract Number:
- AC02-83CH10093
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- Patent Number(s):
- US 4659590; A
- Application Number:
- PPN: US 6-746592
- OSTI ID:
- 7012203
- Resource Relation:
- Patent File Date: 19 Jun 1985
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
10 SYNTHETIC FUELS
09 BIOMASS FUELS
ETHANOL
MEMBRANE TRANSPORT
MEMBRANES
FABRICATION
POLYETHYLENES
SEPARATION PROCESSES
SUPPORTS
ALCOHOLS
HYDROXY COMPOUNDS
MECHANICAL STRUCTURES
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYMERS
POLYOLEFINS
100200* - Synthetic Fuels- Production- (1990-)
090900 - Biomass Fuels- Processing- (1990-)
09 BIOMASS FUELS
ETHANOL
MEMBRANE TRANSPORT
MEMBRANES
FABRICATION
POLYETHYLENES
SEPARATION PROCESSES
SUPPORTS
ALCOHOLS
HYDROXY COMPOUNDS
MECHANICAL STRUCTURES
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYMERS
POLYOLEFINS
100200* - Synthetic Fuels- Production- (1990-)
090900 - Biomass Fuels- Processing- (1990-)