Electrolyte chemistry and improved stack performance in high brine concentration electrodialysis
Abstract
Methods for improving ion flux and energy efficiency in a membrane stack of an electrodialysis unit wherein the membrane stack is disposed between an anode and a cathode each in an electrolyte of a selected concentration. Methods include increasing the concentration of the electrolyte, adding a strong base to the electrolyte and adding buffering anions to the electrolyte. Methods for cleaning the electrodes of such a unit involving involve applying a pulsed polarity reversal to the electrodes. Also provided are methods for improving unit operation by increasing the basicity of the electrolyte to the anode and increasing the acidity of the electrolyte to the cathode or alternatively or in addition, by applying heat to increase the operating temperature of at least one of the electrolyte and the treated water stream.
- Inventors:
- Issue Date:
- Research Org.:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1576361
- Patent Number(s):
- 10391456
- Application Number:
- 14/616,227
- Assignee:
- Gas Technology Institute (Des Plaines, IL)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
- DOE Contract Number:
- AC26-07NT42677
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2015 Feb 06
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Hayes, Thomas D., and Severin, Blaine F. Electrolyte chemistry and improved stack performance in high brine concentration electrodialysis. United States: N. p., 2019.
Web.
Hayes, Thomas D., & Severin, Blaine F. Electrolyte chemistry and improved stack performance in high brine concentration electrodialysis. United States.
Hayes, Thomas D., and Severin, Blaine F. Tue .
"Electrolyte chemistry and improved stack performance in high brine concentration electrodialysis". United States. https://www.osti.gov/servlets/purl/1576361.
@article{osti_1576361,
title = {Electrolyte chemistry and improved stack performance in high brine concentration electrodialysis},
author = {Hayes, Thomas D. and Severin, Blaine F.},
abstractNote = {Methods for improving ion flux and energy efficiency in a membrane stack of an electrodialysis unit wherein the membrane stack is disposed between an anode and a cathode each in an electrolyte of a selected concentration. Methods include increasing the concentration of the electrolyte, adding a strong base to the electrolyte and adding buffering anions to the electrolyte. Methods for cleaning the electrodes of such a unit involving involve applying a pulsed polarity reversal to the electrodes. Also provided are methods for improving unit operation by increasing the basicity of the electrolyte to the anode and increasing the acidity of the electrolyte to the cathode or alternatively or in addition, by applying heat to increase the operating temperature of at least one of the electrolyte and the treated water stream.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Aug 27 00:00:00 EDT 2019},
month = {Tue Aug 27 00:00:00 EDT 2019}
}
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Works referenced in this record:
Electrodialysis operation with buffer solution
patent, December 2009
- Hryn, John N.; Daniels, Edward J.; Krumdick, Greg K.
- US Patent Document 7,632,387
System for Recovering Gas Produced During Electrodialysis
patent-application, April 2007
- Martinez, Vitselle Vita S. P.
- US Patent Application 11/539541; 20070084728
Method and Apparatus for Desalination
patent-application, March 2008
- Wilkins, Frederick C.; Jha, Anil D.; Ganzi, Gary C.
- US Patent Application 11/524080; 20080067125
Production of Purified Water and High Value Chemicals from Salt Water
patent-application, March 2004
- Davis, Thomas A.
- US Patent Application 10/632369; 20040055955
Electrolyte chemistry control in electrodialysis processing
patent, December 2017
- Hayes, Thomas D.; Severin, Blaine F.
- US Patent Document 9,849,426
System for Demineralizing Water by Electrodialysis
patent, March 1975
- Tejeda, Alvaro R.
- US Patent Document 3869376
Reverse Electrodialysis Supported Microbial Fuel Cells and Microbial Electrolysis Cells
patent-application, November 2012
- Kim, Younggy; Cusick, Roland D.; Logan, Bruce
- US Patent Application 13/474202; 20120292187
Method, Apparatus and System for Desalinating Saltwater
patent-application, July 2014
- Sparrow, Benjamin; Tsin, Henry; Zoshi, Joshua
- US Patent Application 14/211585; 20140197029
Process for salt extraction from hydrogen-sulphide scrubber solution using electrodialysis
patent, June 1994
- Kennedy, Mark W.; Jamaluddin, Abul K. M.; Baltazar, Varujan
- US Patent Document 5,324,403
Water desalination process and apparatus
patent-application, March 2006
- Davis, Thomas
- US Patent Application 11/225852; 20060060532
Biological Power Generator, and Method of Treating Organic Solid Pollutant-Containing Waste, a Method of Treating Organic Polymeric Substance-Containing Wastewater, a Method of Treating Organic Substance-Containing Wastewater, as well as Apparatuses for Implementing these Treatment Methods
patent-application, June 2009
- Shimomura, Tatsuo; Adachi, Masanori; Miya, Akiko
- US Patent Application 11/992666; 20090142627