High Flux Thin-film Composite Forward Osmosis and Pressure-retarded Osmosis Membranes

One aspect of the invention relates to customized thin-film composite membranes comprising: a porous support; a selective barrier; and one or more polymeric additives dispersed in the porous support in an amount from at least about 1% and about 50% by weight of the porous support. Another aspect of the invention relates to a method of fabricating a porous support comprising the steps of: preparing a polymer solution comprising a polymer, a polymeric additive, and a first liquid; contacting a surface with the polymer solution; and evaporating the liquid. Another aspect of the invention relates to the use of the thin- film composite membranes disclosed herein in osmotically driven membrane processes.

Patents:
WO 2,011,069,050

Inventor(s): YIP NGAI YIN [US]; PHILLIP WILLIAM A [US]; SCHIFFMAN JESSICA D [US]; ELIMELECH MENACHEM [US]

Type of Offer: Sale



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