Electrolytic process to produce sodium hypochlorite using sodium ion conductive ceramic membranes
Abstract
An electrochemical process for the production of sodium hypochlorite is disclosed. The process may potentially be used to produce sodium hypochlorite from seawater or low purity un-softened or NaCl-based salt solutions. The process utilizes a sodium ion conductive ceramic membrane, such as membranes based on NASICON-type materials, in an electrolytic cell. In the process, water is reduced at a cathode to form hydroxyl ions and hydrogen gas. Chloride ions from a sodium chloride solution are oxidized in the anolyte compartment to produce chlorine gas which reacts with water to produce hypochlorous and hydrochloric acid. Sodium ions are transported from the anolyte compartment to the catholyte compartment across the sodium ion conductive ceramic membrane. Sodium hydroxide is transported from the catholyte compartment to the anolyte compartment to produce sodium hypochlorite within the anolyte compartment.
- Inventors:
- Issue Date:
- Research Org.:
- Ceramatec, Inc. (Salt Lake City, UT)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1078316
- Patent Number(s):
- 8268159
- Application Number:
- 11/613,857
- Assignee:
- Ceramatec, Inc. (Salt Lake City, UT)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE C02F - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
C - CHEMISTRY C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES C25B - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS
- DOE Contract Number:
- FG02-05ER84221
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Balagopal, Shekar, Malhotra, Vinod, Pendleton, Justin, and Reid, Kathy Jo. Electrolytic process to produce sodium hypochlorite using sodium ion conductive ceramic membranes. United States: N. p., 2012.
Web.
Balagopal, Shekar, Malhotra, Vinod, Pendleton, Justin, & Reid, Kathy Jo. Electrolytic process to produce sodium hypochlorite using sodium ion conductive ceramic membranes. United States.
Balagopal, Shekar, Malhotra, Vinod, Pendleton, Justin, and Reid, Kathy Jo. Tue .
"Electrolytic process to produce sodium hypochlorite using sodium ion conductive ceramic membranes". United States. https://www.osti.gov/servlets/purl/1078316.
@article{osti_1078316,
title = {Electrolytic process to produce sodium hypochlorite using sodium ion conductive ceramic membranes},
author = {Balagopal, Shekar and Malhotra, Vinod and Pendleton, Justin and Reid, Kathy Jo},
abstractNote = {An electrochemical process for the production of sodium hypochlorite is disclosed. The process may potentially be used to produce sodium hypochlorite from seawater or low purity un-softened or NaCl-based salt solutions. The process utilizes a sodium ion conductive ceramic membrane, such as membranes based on NASICON-type materials, in an electrolytic cell. In the process, water is reduced at a cathode to form hydroxyl ions and hydrogen gas. Chloride ions from a sodium chloride solution are oxidized in the anolyte compartment to produce chlorine gas which reacts with water to produce hypochlorous and hydrochloric acid. Sodium ions are transported from the anolyte compartment to the catholyte compartment across the sodium ion conductive ceramic membrane. Sodium hydroxide is transported from the catholyte compartment to the anolyte compartment to produce sodium hypochlorite within the anolyte compartment.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {9}
}
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