Liquid filtration, Vapor phase transport, Hydrophobic membranes, desalination
Water desalination and purification
The device for filtering liquid includes a feed chamber, a permeate chamber, and a porous membrane that is at least partially hydrophobic and has one or more pores configured to be permeable to vapor. A pressure of a liquid substance in the feed chamber is increased such that vapor of the liquid substance is transported from the feed chamber to the permeate chamber. In particular, the pressure difference produces a difference in vapor pressure across a hydrophobic membrane to filter the liquid as desired. A second porous membrane may be included to lower the flow resistance of the vapor.
US Patent and PCT filed on January 11, 2010
Last revised:November 24, 2010
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