Invention Application
- Patent Title: Liquid Filtration Using Pressure Difference Across a Hydrophobic Membrane
- Patent Title (中): 通过疏水膜的压力差进行液体过滤
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Application No.: US12685315Application Date: 2010-01-11
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Publication No.: US20100176057A1Publication Date: 2010-07-15
- Inventor: Rohit N. Karnik , Jongho Lee
- Applicant: Rohit N. Karnik , Jongho Lee
- Applicant Address: US MA Cambridge
- Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
- Current Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
- Current Assignee Address: US MA Cambridge
- Main IPC: B01D61/36
- IPC: B01D61/36 ; B01D69/10 ; B01D69/12

Abstract:
Method and devices for filtering liquid are provided that rely on pressure difference to filter liquid. In one embodiment, a 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. The resistance of flow in a hydrophilic layer of the membrane can be controlled to make the membrane defect-tolerant. In another embodiment, a second porous membrane is further included and the second porous membrane is spaced apart from the first porous membrane. Various methods for filtering liquid are also provided.
Public/Granted literature
- US08652332B2 Liquid filtration using pressure difference across a hydrophobic membrane Public/Granted day:2014-02-18
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