pervaporation


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pervaporation

[pər‚vap·ə′rā·shən]
(chemistry)
A chemical separation technique in which a solution is placed in contact with a heated semipermeable membrane that selectively retains one of the components of a solution.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The most common disadvantage of pervaporation is the low permeate flux, attributed to the nonporous characteristic of the membranes.
Romero, "Separation of butanol from ABE mixtures by sweep gas pervaporation using a supported gelled ionic liquid membrane: Analysis of transport phenomena and selectivity," Journal of Membrane Science, vol.
The objective of this work is to investigate the effect of ethanol concentration in water coagulation bath on pervaporation PVDF membrane morphology and performance in the separation of Butanol/Water mixture.
Among the major types, gains are expected to be fastest for pervaporation membranes, albeit from a small base.
Removal of VOCs from their aqueous solution by pervaporation with PDMS-zeolite composite membrane, Desalination and Water Treatment 17: 242-247.
Pervaporation of hydrazine hydrate: separation characteristics of membranes with hydrophilic to hydrophobic behavior.
Principles of pervaporation for the recovery of aroma compounds and applications in the food and beverage industries 9.
Thermodialysis differs from analogous non-isothermal membrane processes, such as pervaporation or membrane distillation, since the driving force in the case of thermodialysis is the radiation pressure associated with the thermal waves travelling in a non-isothermal liquid (7, 8).
(2004) presented and investigated experimentally a novel vapor absorption refrigeration system in which a pervaporation membrane replaces the conventional generator for concentration of the working fluids.
The other topics are preparing and applying ion exchange membranes, proton exchange membranes and fuel cells, hybrid organic/inorganic membranes, pervaporation membranes for organic separation, the theory and practice of membrane bioreactors, membrane integration processes in industrial applications, and membrane controlled release.
Bacterial cellulose membranes have been utilized for pervaporation studies (Pandey et al., 2005) and in combination with palladium they are being used to produce experimental fuel cells for generating electricity (Evans et al., 2003).