METHOD TO IMPROVE FORWARD OSMOSIS MEMBRANE PERFORMANCE

A membrane according to the current invention includes a two layer structure, the first comprising a durable, hydrophilic, highly porous asymmetric membrane of polyacrylonitrile or similar hydrophilic polymer or polymer blends having an integrally embedded backing material, which bears a second laye...

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Bibliographic Details
Main Authors SHETHJI, JAYRAJ, FARR, ISAAC V, WANDERA, DANIEL
Format Patent
LanguageEnglish
French
Published 29.01.2015
Subjects
CHEMISTRY
METALLURGY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Summary:A membrane according to the current invention includes a two layer structure, the first comprising a durable, hydrophilic, highly porous asymmetric membrane of polyacrylonitrile or similar hydrophilic polymer or polymer blends having an integrally embedded backing material, which bears a second layer, primarily consisting of highly crosslinked polyvinylalcohol as the primary selective layer. Une membrane selon l'invention comprend une structure à deux couches, la première couche comprenant une membrane asymétrique hautement poreuse, hydrophile, durable en polyacrylonitrile, ou un polymère hydrophile analogue ou des mélanges de polymères analogues contenant un matériau de renfort intégré monobloc, ledit matériau servant de support à une seconde couche principalement constituée d'alcool polyvinylique) hautement réticulé, et ladite couche servant de couche sélective primaire.
Bibliography:Application Number: WO2014US47731