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
54 Claims
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1-20. -20. (canceled)
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21. A method of removing carbon dioxide from a gaseous source of carbon dioxide, comprising:
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a) preparing a sodium hydroxide solution in an electrochemical process and b) using the sodium hydroxide solution from the electrochemical process to contact the gaseous source of carbon dioxide and produce a CO2-charged solution, wherein the gaseous source of carbon dioxide is from a mechanical processing plant, a refinery, a cement plant, or a steel plant. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. A method of removing carbon dioxide from a gaseous source of carbon dioxide, comprising:
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a) producing a sodium hydroxide solution in an electrochemical process; b) using the sodium hydroxide solution from the electrochemical process to contact the gaseous source of carbon dioxide and produce a slurry composition; and c) transporting the slurry composition to a disposal site underground or underwater. - View Dependent Claims (42, 43, 44, 45)
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46. A method of removing carbon dioxide from a gaseous source of carbon dioxide, comprising:
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a) producing a sodium hydroxide solution in an electrochemical process; b) using the sodium hydroxide solution from the electrochemical process to contact the gaseous source of carbon dioxide and produce a slurry composition; and c) separating a precipitated product and a mother liquor from the slurry composition, wherein the gaseous source of carbon dioxide further comprises SOx, mercury, or both. - View Dependent Claims (47, 48, 49, 50, 51, 52, 53, 54)
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Specification