US2010200419A1PendingUtilityA1

Low-voltage alkaline production from brines

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Assignee: GILLIAM RYAN JPriority: Feb 10, 2009Filed: Feb 10, 2010Published: Aug 12, 2010
Est. expiryFeb 10, 2029(~2.6 yrs left)· nominal 20-yr term from priority
Inventors:Ryan J. GilliamValentin DeckerWilliam Randall SeekerBryan BoggsNikhil JalaniThomas A. AlbrechtMatt Smith
B01D 2257/504Y02P20/151C02F 1/4618C25B 1/04C25B 15/08B01D 53/326Y02E60/36
39
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Claims

Abstract

An alkaline production system comprising an electrochemistry unit comprising a hydrogen-oxidizing anode in communication with a cathode electrolyte; wherein the electrochemistry unit is operably connected to a carbon sequestration system configured to sequester carbon dioxide with the cathode electrolyte. In another embodiment, an electrochemistry unit comprising a hydrogen-oxidizing anode in communication with a cathode electrolyte; and a carbon sequestration system configured to sequester carbon dioxide with the cathode electrolyte; and methods thereof.

Claims

exact text as granted — not AI-modified
1 . A system comprising:
 an electrochemistry unit comprising a hydrogen-oxidizing anode in communication with a cathode electrolyte; wherein   the electrochemistry unit is operably connected to a carbon sequestration system configured to sequester carbon dioxide with the cathode electrolyte.   
     
     
         2 . The system of  claim 1 , further comprising a brine production system configured to provide cations to the cathode electrolyte. 
     
     
         3 . (canceled) 
     
     
         4 . The system of  claim 2 , wherein the cathode electrolyte comprises added carbon dioxide. 
     
     
         5 . The system of  claim 4 , wherein the cathode electrolyte comprises hydroxide ions and/or carbonate ions. 
     
     
         6 . (canceled) 
     
     
         7 . (canceled) 
     
     
         8 . The system of  claim 5 , configured to produce hydrogen and hydroxide ions at a cathode in contact with the cathode electrolyte, and oxidize hydrogen to protons at an anode in contact with an anode electrolyte without producing a gas at the anode, with a voltage applied across the anode and cathode. 
     
     
         9 . The system of  claim 8 , wherein the voltage is less than 3V. 
     
     
         10 . The system of  claim 9 , configured to produce an acid in the anode electrolyte. 
     
     
         11 . (canceled) 
     
     
         12 . The system of  claim 10 , further comprising an acid dissolution system configured to produce divalent cations with the acid. 
     
     
         13 . (canceled) 
     
     
         14 . The system of  claim 1 , wherein carbon dioxide is contained in an industrial waste gas. 
     
     
         15 . The system of  claim 14 , wherein the carbon dioxide is sequestered as carbonate and/or bicarbonate. 
     
     
         16 . (canceled) 
     
     
         17 . (canceled) 
     
     
         18 . (canceled) 
     
     
         19 . A method comprising:
 oxidizing hydrogen to protons at a hydrogen-oxidizing anode in communication with a cathode electrolyte; and   sequestering carbon dioxide with the cathode electrolyte.   
     
     
         20 . The method of  claim 19 , comprising providing cations from a brine to the cathode electrolyte. 
     
     
         21 . (canceled) 
     
     
         22 . (canceled) 
     
     
         23 . The method of  claim 20 , comprising adding carbon dioxide to the cathode electrolyte. 
     
     
         24 . The method of  claim 23 , comprising producing hydrogen gas and hydroxide ions at a cathode in contact with the cathode electrolyte without producing a gas at the anode, by applying a voltage across the anode and cathode. 
     
     
         25 . The method of  claim 24 , wherein the voltage is less than 3V. 
     
     
         26 . The method of  claim 25 , wherein the cathode electrolyte comprises hydroxide ions and/or bicarbonate ions and/or carbonate ions. 
     
     
         27 . The method of  claim 26 , comprising separating cations and anions from the brine to produce an ion-depleted brine. 
     
     
         28 . The method of  claim 27 , comprising producing an acid in the anode electrolyte. 
     
     
         29 . (canceled) 
     
     
         30 . (canceled) 
     
     
         31 . (canceled) 
     
     
         32 . The method of  claim 19 , wherein carbon dioxide is contained in an industrial waste gas. 
     
     
         33 . The method of  claim 32 , wherein the carbon dioxide is sequestered as carbonate and/or bicarbonate. 
     
     
         34 . (canceled) 
     
     
         35 . (canceled) 
     
     
         36 . (canceled) 
     
     
         37 . (canceled) 
     
     
         38 . A system comprising:
 a hydrogen-oxidizing anode in communication with a cathode electrolyte comprising bicarbonate ions; and a   and a brine production system configured to provide cations to the cathode electrolyte.   
     
     
         39 . (canceled) 
     
     
         40 . The system of  claim 38 , wherein the cathode electrolyte comprises added carbon dioxide. 
     
     
         41 . The system of  claim 40 , wherein the cathode electrolyte comprises hydroxide ions and/or carbonate ions. 
     
     
         42 . (canceled) 
     
     
         43 . The system of  claim 41 , wherein the cations comprises sodium ions. 
     
     
         44 . The system of  claim 43 , configured to produce hydrogen and hydroxide ions at a cathode in contact with the cathode electrolyte, and oxidize hydrogen to protons at an anode in contact with an anode electrolyte without producing a gas at the anode, with a voltage applied across the anode and cathode. 
     
     
         45 . The system of  claim 44 , wherein the voltage is less than 3V. 
     
     
         46 . (canceled) 
     
     
         47 . (canceled) 
     
     
         48 . (canceled) 
     
     
         49 . (canceled) 
     
     
         50 . The system of  claim 45 , further comprising a carbon sequestration system configured to sequester carbon dioxide with the cathode electrolyte. 
     
     
         51 . The system of  claim 41 , wherein carbon dioxide is contained in an industrial waste gas. 
     
     
         52 . The system of  claim 51 , wherein the carbon dioxide is sequestered as carbonate and/or bicarbonate. 
     
     
         53 . (canceled) 
     
     
         54 . (canceled) 
     
     
         55 . (canceled) 
     
     
         56 . (canceled) 
     
     
         57 . (canceled) 
     
     
         58 . (canceled) 
     
     
         59 . A method comprising:
 oxidizing hydrogen to protons at a hydrogen-oxidizing anode in communication with a cathode electrolyte comprising bicarbonate ions; and   providing cations from a brine to the cathode electrolyte.   
     
     
         60 . (canceled) 
     
     
         61 . (canceled) 
     
     
         62 . The method of  claim 59 , comprising adding carbon dioxide to the cathode electrolyte. 
     
     
         63 . The method of  claim 62 , comprising producing hydrogen gas and hydroxide ions at a cathode in contact with the cathode electrolyte without producing a gas at the anode, by applying a voltage across the anode and cathode. 
     
     
         64 . The method of  claim 63 , wherein the voltage is less than 3V. 
     
     
         65 . The method of  claim 64 , wherein the cathode electrolyte comprises hydroxide ions and/or carbonate ions. 
     
     
         66 . The method of  claim 65 , comprising separating cations and anions from the brines to produce an ion-depleted brine. 
     
     
         67 . The method of  claim 66 , comprising producing an acid in the anode electrolyte. 
     
     
         68 . (canceled) 
     
     
         69 . (canceled) 
     
     
         70 . (canceled) 
     
     
         71 . The method of  claim 67 , further comprising configuring a carbon sequestration system to sequester carbon dioxide with the cathode electrolyte. 
     
     
         72 . The method of  claim 62 , wherein carbon dioxide is contained in an industrial waste gas. 
     
     
         73 . The method of  claim 72 , wherein the carbon dioxide is sequestered as carbonate and/or bicarbonate. 
     
     
         74 . (canceled) 
     
     
         75 . (canceled) 
     
     
         76 . The method of  claim 73 , comprising generating hydrogen gas and hydroxide ions by reducing water at the cathode. 
     
     
         77 . (canceled) 
     
     
         78 . (canceled) 
     
     
         79 . (canceled) 
     
     
         80 . (canceled)

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