Removing carbon dioxide from waste streams through co-generation of carbonate and/or bicarbonate minerals
First Claim
1. A method of sequestering carbon dioxide produced by a source and contained in a gas stream, comprising the steps of:
- (a) obtaining a hydroxide in an aqueous mixture;
(b) admixing the hydroxide with carbon dioxide produced by the source to produce bicarbonate products or a combination of carbonate and bicarbonate products in an admixture;
(c) separating said products from the admixture, thereby sequestering the carbon dioxide in a mineral product form; and
(d) using said products to perform ion-exchanges with one or more group-1 or group-2 salts to precipitate carbonates;
wherein obtaining the hydroxide comprises;
obtaining a group-1 or group-2 salt;
admixing the salt with acid and water, acid and steam, or acid, water, and steam to produce a protonated brine solution; and
electrolyzing the protonated brine solution to produce a hydroxide;
wherein step (b) comprises altering the product equilibrium to favor the production of bicarbonate products.
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Accused Products
Abstract
Methods for removing carbon dioxide and other pollutants from a gas stream are provided. The methods include obtaining hydroxide in an aqueous mixture, mixing the hydroxide with the gas stream to produce bicarbonate products or a combination of carbonate and bicarbonate products in an admixture, separating the products from the admixture, and using the products to perform ion-exchanges with one or more group-1 or group-2 salts to precipitate carbonates, wherein obtaining the hydroxide comprises obtaining a group-1 or group-2 salt; mixing the salt with acid and water, acid and steam, or acid, water, and steam to produce a protonated brine solution; and electrolyzing the protonated brine solution to produce a hydroxide; and wherein mixing the hydroxide with the gas stream comprises altering the product equilibrium to favor the production of bicarbonate products.
121 Citations
27 Claims
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1. A method of sequestering carbon dioxide produced by a source and contained in a gas stream, comprising the steps of:
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(a) obtaining a hydroxide in an aqueous mixture; (b) admixing the hydroxide with carbon dioxide produced by the source to produce bicarbonate products or a combination of carbonate and bicarbonate products in an admixture; (c) separating said products from the admixture, thereby sequestering the carbon dioxide in a mineral product form; and (d) using said products to perform ion-exchanges with one or more group-1 or group-2 salts to precipitate carbonates; wherein obtaining the hydroxide comprises; obtaining a group-1 or group-2 salt; admixing the salt with acid and water, acid and steam, or acid, water, and steam to produce a protonated brine solution; and electrolyzing the protonated brine solution to produce a hydroxide; wherein step (b) comprises altering the product equilibrium to favor the production of bicarbonate products. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method of sequestering carbon dioxide produced by a source and contained in a gas stream, comprising the steps of:
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(a) obtaining a hydroxide in an aqueous mixture; (b) admixing the hydroxide with carbon dioxide produced by the source to produce bicarbonate products or a combination of carbonate and bicarbonate products in an admixture; and (c) separating said products from the admixture, thereby sequestering the carbon dioxide in a mineral product form; wherein obtaining the hydroxide comprises; obtaining a group-1 or group-2 salt; admixing the salt with acid and water, acid and steam, or acid, water, and steam to produce a protonated brine solution; and electrolyzing the protonated brine solution to produce a hydroxide using diaphragm, mercury, or membrane cells; wherein step (b) comprises altering the product equilibrium to favor the production of bicarbonate products.
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25. A method of sequestering carbon dioxide produced by a source and contained in a gas stream, comprising the steps of:
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(a) obtaining a hydroxide in an aqueous mixture; (b) admixing the hydroxide with carbon dioxide produced by the source to produce bicarbonate products or a combination of carbonate and bicarbonate products in an admixture; and (c) separating said products from the admixture, thereby sequestering the carbon dioxide in a mineral product form; wherein obtaining the hydroxide comprises; obtaining a group-1 or group-2 salt; admixing the salt with acid and water, acid and steam, or acid, water, and steam to produce a protonated brine solution; and electrolyzing the protonated brine solution to produce a hydroxide and hydrogen gas; wherein step (b) comprises altering the product equilibrium to favor the production of bicarbonate products; wherein the hydrogen gas is traded or sold.
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26. A method of sequestering carbon dioxide produced by a source and contained in a gas stream, comprising the steps of:
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(a) obtaining a hydroxide in an aqueous mixture; (b) admixing the hydroxide with carbon dioxide produced by the source to produce bicarbonate products or a combination of carbonate and bicarbonate products in an admixture; and (c) separating said products from the admixture, thereby sequestering the carbon dioxide in a mineral product form; wherein obtaining the hydroxide comprises; obtaining a group-1 or group-2 salt; admixing the salt with acid and water, acid and steam, or acid, water, and steam to produce a protonated brine solution; and electrolyzing the protonated brine solution to produce a hydroxide; wherein step (b) comprises altering the product equilibrium to favor the production of bicarbonate products; wherein a quantity of power is required to perform steps (a)-(c), and that power is produced by one or more non-greenhouse-gas emitting power sources. - View Dependent Claims (27)
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Specification