Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Reexamination Certificate
2005-12-02
2009-10-27
Menon, Krishnan S (Department: 1797)
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
C210S321600, C210S257200
Reexamination Certificate
active
07608188
ABSTRACT:
The present disclosure provides methods and systems for purifying an impaired liquid. In a particular example, the disclosure provides methods and systems for purifying water containing a solute. A feed stream of solute containing water is introduced in a flow chamber. A permeate stream of water at least substantially free of the solute is placed in the flow chamber. A hydrophobic membrane is placed between the feed stream and the permeate stream. A vacuum is applied to the permeate stream. A vapor pressure differential causes water to vaporize from the feed stream, pass through the hydrophobic membrane, and condense in the permeate stream.
REFERENCES:
patent: 4875980 (1989-10-01), Arita et al.
patent: 5098575 (1992-03-01), Yaeli
patent: 5464540 (1995-11-01), Friesen et al.
patent: 6299777 (2001-10-01), Bowser
patent: 6391205 (2002-05-01), McGinnis
patent: 6645380 (2003-11-01), Baig et al.
patent: 6849184 (2005-02-01), Lampi et al.
patent: WO 02/060825 (2002-08-01), None
patent: WO 2005/012185 (2005-02-01), None
patent: WO 2005/017352 (2005-02-01), None
patent: WO 2005/120688 (2005-12-01), None
patent: WO 2006/120399 (2006-11-01), None
“Crossing Boundaries in Pursuit of Future Solutions,” Sweden Today, p. 37, No. 2, 2006; file dated Aug. 7, 2006.
Giorgini; International Search Report from PCT/GB2004/003450; Sep. 22, 2004.
Goers; International Search Report from PCT/GB2004/003242; Oct. 18, 2004.
Liu and Martin, “Applying Membrane Distillation in High-Purity Water Production for Semiconductor Industry,” Royal Institute of Technology Presentation, KTH, Stockholm, Sep. 30, 2005.
Liu, “Polygeneration of Electricity, Heat, and Ultra Pure Water for Semiconductor Industry,” file created Apr. 23, 2003.
U.S. Appl. No. 11/295,807, filed Dec. 6, 2005, Cath et al.
Mootz; International Search Report from PCT/GB2005/002307; Aug. 24, 2005.
Pankratz, Water Desalination Report, vol. 43, No. 23, 4 pp., Jun. 18, 2007.
Park; Written Opinion and International Search Report from PCT/US2007/071141; Nov. 5, 2007.
Reports and Articles summary page, downloaded from http://www.xzero.se/en/reports.html; dated Aug. 14, 2006.
Tillberg, “ZLD Systems—An Overview,” presented at the Royal Institute of Technology, KTH, Stockholm, 2004; file dated Dec. 19, 2005.
XZero Company Brochure, file dated Jun. 5, 2006.
Bradbury, “Water Filters Rely on Nanotech,” pp. 1-3 downloaded from http://www.wired.com/print/science/discoveries
ews/2004/10/65287 on Jul. 3, 2007.
Cath, et al., “Experimental Study of Desalination Using Direct Contact Membrane Distillation: a New Approach to Flux Enhancement,”Journal of Membrane Science228:1-16, 2004.
Cath, et al. “Forward Osmosis: Principles, Applications, and Recent Developments,”Journal of Membrane Science281:70-87, (2006).
Cath, et al., “Membrane Contactor Processes for Wastewater Reclamation in Space Part I. Direct Osmotic Concentration as Pretreatment for Reverse Osmosis,”Journal of Membrane Science257:85-98, (2005).
Cath, et al., “Membrane Contactor Processes for Wastewater Reclamation in Space II. Combined Direct Osmosis, Osmotic Distillation, and Membrane Distillation for Treatment of Metabolic Wastewater,”Journal of Membrane Science257:111-119, (2005).
McCutcheon, et al., “A novel ammonia-carbon dioxide forward (direct) osmosis desalination process,”Desalination174:1-11, (2005).
Schofield et al., “Factors Affecting Flux in Membrane Distillation,”Desalination77:279-294 (1990).
Schofield et al., “Gas and Vapour Transport Through Microporous Membranes. II. Membrane Distillation,”Journal of Membrane Science53:173-185 (1990).
Adams V. Dean
Cath Tzahi Y.
Childress Amy E.
Board of Regents of the Nevada System of Higher Education
Heck Ryan A.
Menon Krishnan S
UNR-DRI Technology Transfer Office
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