Separation properties of a polyethylene membrane and model calculations

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F02%3A00007004" target="_blank" >RIV/60461373:22340/02:00007004 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Separation properties of a polyethylene membrane and model calculations
Original language description
Pervaporation of liquid binary mixtures (methanol, ethanol, propan-1-ol, butan-1-ol, pentan-1-ol, hexan-1-ol with toluene) through the low density polyethylene membrane Bralen is complex process which is influenced by many factors. It turns out that thestrong non-ideal solubility and diffusivity behavior of measured liquid binary mixture components in polyethylene membrane and diffusive coupling effects play the dominant roles in the pervaporation process. Therefore the results based on the 1st Fick Law with constant diffusion coefficients are completely unsatisfactory. An essential improvement of the model description can be achieved by modified Maxwell-Stefan equations with one additional adjustable parameter. Application of the model requires not only the knowledge of dependence of the polymer density on concentration but also concentration dependence of diffusion coefficients of pure component in the membrane active layer and solubility coefficients. In order to obtain sorption da
Czech name
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Czech description
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Publication year
2002
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
The CD with full texts of the contributions of the 15th International Congress of Chemical and Process Engineering CHISA 2002
ISBN
80-86059-33-2
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
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Publisher name
Česká společnost chemického inženýrství
Place of publication
Praha, Česká republika
Event location
Praha, Česká republika
Event date
Aug 25, 2002
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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