Separation of tetrahydrofuran from aqueous mixtures by pervaporation

Journal Article · Mon Jan 31 23:00:00 EST 1994 · Separation Science and Technology; (United States)

DOI:https://doi.org/10.1080/01496399408002156· OSTI ID:7302660

Mencarini, J Jr; Coppola, R; Slater, C S ^[1]

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1. Manhattan College, Riverdale, NY (United States)

Studies on the separation of tetrahydrofuran (THF) and water by pervaporation were conducted. A silicalite-filled silicone composite membrane was used for organic permeation and a polyvinyl alcohol composite membrane for dehydration. Effects of feed concentration, feed temperature, permeate-side pressure, and type of membrane were studied. The silicone composite membrane yielded a selectivity of 205 and a THF flux of 1.1 kg m[sup 2][center dot]h at benchmark conditions of 50[degree]C feed temperature. 2 torr permeate-side pressure, and a feed concentration of 4.4% w/w THF. An increase in temperature increased the flux exponentially in an Arrhenius-type manner, but had little effect on selectivity. These data show that the trend agrees with an Arrhenius-type relationship. An increase in feed concentration increased the flux, but the selectivity for THF decreased. As the permeate-side pressure increased, the flux decreased in a sigmoidal fashion, but the selectivity for THF increased. Some initial studies on dehydration were also performed. Use of pervaporation in a solvent recovery reuse system in industry has also been examined. 22 refs., 10 figs.

• OSTI ID: 7302660
• Journal Information: Separation Science and Technology; (United States), Journal Name: Separation Science and Technology; (United States) Vol. 29:4; ISSN 0149-6395; ISSN SSTEDS
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320305 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
ALCOHOLS
AQUEOUS SOLUTIONS
ARRHENIUS EQUATION
CHALCOGENIDES
CHEMICAL PLANTS
COMPOSITE MATERIALS
DEHYDRATION
DISPERSIONS
EQUATIONS
FURANS
HETEROCYCLIC COMPOUNDS
HYDROXY COMPOUNDS
INDUSTRIAL PLANTS
MANAGEMENT
MATERIALS
MATERIALS RECOVERY
MEMBRANE TRANSPORT
MEMBRANES
MINERALS
MIXTURES
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC POLYMERS
ORGANIC SILICON COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PERMEABILITY
POLYMERS
POLYVINYLS
PRESSURE DEPENDENCE
PROCESSING
PVA
RECYCLING
SEPARATION PROCESSES
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SILICONES
SILOXANES
SOLUTIONS
SOLVENTS
TEMPERATURE DEPENDENCE
TETRAHYDROFURAN
WASTE MANAGEMENT
WASTE PROCESSING