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Title: Electrochemical formation of hydroxide for enhancing carbon dioxide and acid gas uptake by a solution

Abstract

A system for forming metal hydroxide from a metal carbonate utilizes a water electrolysis cell having an acid-producing anode and a hydroxyl-producing cathode immersed in a water solution of sufficient ionic content to allow an electric current to pass between the hydroxyl-producing cathode and the acid-producing anode. A metal carbonate is placed in close proximity to the acid-producing anode. A direct current electrical voltage is provided across the acid-producing anode and the hydroxyl-producing cathode sufficient to generate acid at the acid-producing anode and hydroxyl ions at the hydroxyl-producing cathode. The acid dissolves at least part of the metal carbonate into metal and carbonate ions allowing the metal ions to travel toward the hydroxyl-producing cathode and to combine with the hydroxyl ions to form the metal hydroxide. The carbonate ions travel toward the acid-producing anode and form carbonic acid and/or water and carbon dioxide.

Inventors:
Issue Date:
Research Org.:
LLNL (Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States))
Sponsoring Org.:
USDOE
OSTI Identifier:
1136746
Patent Number(s):
8,764,964
Application Number:
13/324,936
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Rau, Gregory Hudson. Electrochemical formation of hydroxide for enhancing carbon dioxide and acid gas uptake by a solution. United States: N. p., 2014. Web.
Rau, Gregory Hudson. Electrochemical formation of hydroxide for enhancing carbon dioxide and acid gas uptake by a solution. United States.
Rau, Gregory Hudson. Tue . "Electrochemical formation of hydroxide for enhancing carbon dioxide and acid gas uptake by a solution". United States. https://www.osti.gov/servlets/purl/1136746.
@article{osti_1136746,
title = {Electrochemical formation of hydroxide for enhancing carbon dioxide and acid gas uptake by a solution},
author = {Rau, Gregory Hudson},
abstractNote = {A system for forming metal hydroxide from a metal carbonate utilizes a water electrolysis cell having an acid-producing anode and a hydroxyl-producing cathode immersed in a water solution of sufficient ionic content to allow an electric current to pass between the hydroxyl-producing cathode and the acid-producing anode. A metal carbonate is placed in close proximity to the acid-producing anode. A direct current electrical voltage is provided across the acid-producing anode and the hydroxyl-producing cathode sufficient to generate acid at the acid-producing anode and hydroxyl ions at the hydroxyl-producing cathode. The acid dissolves at least part of the metal carbonate into metal and carbonate ions allowing the metal ions to travel toward the hydroxyl-producing cathode and to combine with the hydroxyl ions to form the metal hydroxide. The carbonate ions travel toward the acid-producing anode and form carbonic acid and/or water and carbon dioxide.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {7}
}

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Works referenced in this record:

Process design and energy requirements for the capture of carbon dioxide from air
journal, December 2006

  • Baciocchi, Renato; Storti, Giuseppe; Mazzotti, Marco
  • Chemical Engineering and Processing: Process Intensification, Vol. 45, Issue 12, p. 1047-1058
  • DOI: 10.1016/j.cep.2006.03.015