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The heating of a liquid within a dialyzing bag suspended over a hot plate, evaporation taking place rapidly through the membrane; any colloids in solution remain within the bag while crystalloids diffuse out and crystallize on the outer surface of the bag (perstillation).
[L. per, through, + vapor, steam]
References in periodicals archive ?
3b, d, and f) indicates that all these membranes' separation layers are all tightly and properly covered on the top of the PVDF supporting layer, which is important for pervaporation desulfurization.
The influence of support layer on mass transport of homologous series of alcohols and esters through composite pervaporation membranes.
Pervaporation is a process in which a liquid stream containing two or more components comes in contact with one side of a nonporous polymeric membrane while a vacuum or gas purge is applied to the other side.
It was the work by Binning and co-workers |4,5,6~ from 1958-1961 that established the principles and highlighted the potential of pervaporation separation.
Cascon, who holds a PhD in environmental engineering and biotechnology from Myongji University (Yongin Campus), South Korea, specializes in alcoholic biofuel separation using ionic liquid-based membranes in the pervaporation process.
Among the membrane separation techniques, pervaporation has been successfully applied for the separation of such organic mixtures owing to its relative simplicity and energy saving aspects [1-3].
Other topics include pervaporation, electrophoretic and eletroosmotic treatments, ion exchange, air tabling, particle shape characterization by image analysis, and Brunauer-Emmett-Teller surface area measurements.
Shieh and Huang [163] have reported the preparation and characterization of chitosan/N- methylol nylon 6 blends in the form of membranes for the separation of ethanol-water mixtures by pervaporation.
Li, et al (2001) attempted to recover 1,3-propanediol by pervaporation through a X-type zeolite membrane from a model 1,3-propanediol/glycerol/water solution and broth solutions containing glucose.
The first section of the book discusses recent advances in techniques, including supercritical fluid extraction, process chromatography, and membrane technologies, as well as emerging techniques such as pervaporation and pressurized liquid extraction.