Deionization and desalination using electrostatic ion pumping
Abstract
The present invention provides a new method and apparatus/system for purifying ionic solutions, such as, for example, desalinating water, using engineered charged surfaces to sorb ions from such solutions. Surface charge is applied externally, and is synchronized with oscillatory fluid movements between substantially parallel charged plates. Ions are held in place during fluid movement in one direction (because they are held in the electrical double layer), and released for transport during fluid movement in the opposite direction by removing the applied electric field. In this way the ions, such as salt, are "ratcheted" across the charged surface from the feed side to the concentrate side. The process itself is very simple and involves only pumps, charged surfaces, and manifolds for fluid collection.
- Inventors:
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1084255
- Patent Number(s):
- 8460532
- Application Number:
- 13/159,862
- Assignee:
- Lawrence Livermore National Security, LLC (Livermore, CA) ; Regents of the University of Minnesota (Minneapolis, MN)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
C - CHEMISTRY C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE C02F - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- DOE Contract Number:
- AC52-07NA27344
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Bourcier, William L., Aines, Roger D., Haslam, Jeffery J., Schaldach, Charlene M., O'Brien, Kevin C., and Cussler, Edward. Deionization and desalination using electrostatic ion pumping. United States: N. p., 2013.
Web.
Bourcier, William L., Aines, Roger D., Haslam, Jeffery J., Schaldach, Charlene M., O'Brien, Kevin C., & Cussler, Edward. Deionization and desalination using electrostatic ion pumping. United States.
Bourcier, William L., Aines, Roger D., Haslam, Jeffery J., Schaldach, Charlene M., O'Brien, Kevin C., and Cussler, Edward. Tue .
"Deionization and desalination using electrostatic ion pumping". United States. https://www.osti.gov/servlets/purl/1084255.
@article{osti_1084255,
title = {Deionization and desalination using electrostatic ion pumping},
author = {Bourcier, William L. and Aines, Roger D. and Haslam, Jeffery J. and Schaldach, Charlene M. and O'Brien, Kevin C. and Cussler, Edward},
abstractNote = {The present invention provides a new method and apparatus/system for purifying ionic solutions, such as, for example, desalinating water, using engineered charged surfaces to sorb ions from such solutions. Surface charge is applied externally, and is synchronized with oscillatory fluid movements between substantially parallel charged plates. Ions are held in place during fluid movement in one direction (because they are held in the electrical double layer), and released for transport during fluid movement in the opposite direction by removing the applied electric field. In this way the ions, such as salt, are "ratcheted" across the charged surface from the feed side to the concentrate side. The process itself is very simple and involves only pumps, charged surfaces, and manifolds for fluid collection.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jun 11 00:00:00 EDT 2013},
month = {Tue Jun 11 00:00:00 EDT 2013}
}
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