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Title: Carbon dioxide capture using resin-wafer electrodeionization

Patent ·
OSTI ID:1347087

The present invention provides a resin-wafer electrodeionization (RW-EDI) apparatus including cathode and anode electrodes separated by a plurality of porous solid ion exchange resin wafers, which when in use are filled with an aqueous fluid. The apparatus includes one or more wafers comprising a basic ion exchange medium, and preferably includes one or more wafers comprising an acidic ion exchange medium. The wafers are separated from one another by ion exchange membranes. The fluid within the acidic and/or basic ion exchange wafers preferably includes, or is in contact with, a carbonic anhydrase (CA) enzyme to facilitate conversion of bicarbonate ion to carbon dioxide within the acidic medium. A pH suitable for exchange of CO.sub.2 is electrochemically maintained within the basic and acidic ion exchange wafers by applying an electric potential across the cathode and anode.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-06CH11357
Assignee:
UCHICAGO ARGONNE, LLC (Argonne, IL)
Patent Number(s):
9,126,150
Application Number:
14/500,294
OSTI ID:
1347087
Resource Relation:
Patent File Date: 2014 Sep 29
Country of Publication:
United States
Language:
English

References (14)

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Electrodeionization method patent September 2004
Single-stage separation and esterification of cation salt carboxylates using electrodeionization patent November 2006
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Electronically and ionically conductive porous material and method for manufacture of resin wafers therefrom patent November 2008
Devices using resin wafers and applications thereof patent March 2009
Methane production using resin-wafer electrodeionization patent March 2014
Novel enzyme compositions for removing carbon dioxide from a mixed gas patent-application January 2008
Retention of counterions in the separative bioreactor patent-application August 2008