ELECTROCHEMICAL METHODS OF SEQUESTERING CO2
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Abstract
Methods of sequestering carbon dioxide (CO2) are provided. Aspects of the methods include precipitating a storage stable carbon dioxide sequestering product from an alkaline-earth-metal-containing water and then disposing of the product, e.g., by placing the product in a disposal location or using the product as a component of a manufactured composition. Also provided are systems for practicing methods of the invention.
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Citations
53 Claims
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1-20. -20. (canceled)
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21. A system comprising:
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a) a reactor configured to produce a CO2-charged solution from 1) a gaseous waste stream comprising carbon dioxide and 2) a solution of sodium hydroxide; b) an electrochemical system configured to produce the solution of sodium hydroxide and provide it to the reactor; and c) a gas conveyer configured to convey the gaseous waste stream to the reactor from a source of the gaseous waste stream. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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51. A system comprising:
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a) a reactor configured to produce a CO2-charged solution from a gaseous source of CO2, wherein the reactor is capable of absorbing 50% or more CO2 from the gaseous source of carbon dioxide, and b) an electrochemical system comprising an anode and a cathode, wherein the electrochemical system is configured to produce hydroxide at the cathode and no chlorine at the anode, and wherein the electrochemical system is configured to provide the hydroxide to the reactor.
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52. A system comprising:
a) a reactor for producing a CO2-charged solution from an industrial source of CO2 and b) an electrochemical system comprising an anode and a cathode, wherein the electrochemical system is configured to produce hydroxide at the cathode without producing gas at the anode, and further wherein the electrochemical system is configured to provide the hydroxide to the reactor.
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53. A system comprising:
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a) a reactor for producing a CO2-charged solution from an industrial source of CO2 and b) an electrochemical system comprising an anode and a cathode, wherein the electrochemical system is configured to produce hydroxide at the cathode when the voltage across the anode and the cathode is less than 2.0 V, and further wherein the electrochemical system is configured to provide the hydroxide to the reactor.
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Specification