Alternating-polarity operation for complete regeneration of electrochemical deionization system
Abstract
An electrically regeneratable battery of electrochemical cells for capacitive deionization (including electrochemical purification) and regeneration of electrodes is operated at alternate polarities during consecutive cycles. By polarizing the cells, ions are removed from the electrolyte and are held in the electric double layers formed at the carbon aerogel surfaces of the electrodes. As the electrodes of each cell of the battery are saturated with the removed ions, the battery is regenerated electrically at a reversed polarity from that during the deionization step of the cycle, thus significantly minimizing secondary wastes.
- Inventors:
-
- Livermore, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 874233
- Patent Number(s):
- 6346187
- Assignee:
- The Regents of the University of California (Oakland, CA)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
C - CHEMISTRY C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE C02F - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- alternating-polarity; operation; complete; regeneration; electrochemical; deionization; electrically; regeneratable; battery; cells; capacitive; including; purification; electrodes; operated; alternate; polarities; consecutive; cycles; polarizing; removed; electrolyte; held; electric; double; layers; formed; carbon; aerogel; surfaces; cell; saturated; regenerated; reversed; polarity; step; cycle; significantly; minimizing; secondary; wastes; electrochemical cell; capacitive deionization; /205/210/
Citation Formats
Tran, Tri D, and Lenz, David J. Alternating-polarity operation for complete regeneration of electrochemical deionization system. United States: N. p., 2002.
Web.
Tran, Tri D, & Lenz, David J. Alternating-polarity operation for complete regeneration of electrochemical deionization system. United States.
Tran, Tri D, and Lenz, David J. Tue .
"Alternating-polarity operation for complete regeneration of electrochemical deionization system". United States. https://www.osti.gov/servlets/purl/874233.
@article{osti_874233,
title = {Alternating-polarity operation for complete regeneration of electrochemical deionization system},
author = {Tran, Tri D and Lenz, David J},
abstractNote = {An electrically regeneratable battery of electrochemical cells for capacitive deionization (including electrochemical purification) and regeneration of electrodes is operated at alternate polarities during consecutive cycles. By polarizing the cells, ions are removed from the electrolyte and are held in the electric double layers formed at the carbon aerogel surfaces of the electrodes. As the electrodes of each cell of the battery are saturated with the removed ions, the battery is regenerated electrically at a reversed polarity from that during the deionization step of the cycle, thus significantly minimizing secondary wastes.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}
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