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US 7,727,374 B2Granted
Removing carbon dioxide from waste streams through co-generation of carbonate and/or bicarbonate minerals
AssigneeSkyonic Corporation
InventorJoe David Jones
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Abstract
Apparatuses and methods for removing carbon dioxide and other pollutants from a gas stream are provided. The methods include obtaining hydroxide in an aqueous mixture, and mixing the hydroxide with the gas stream to produce carbonate and/or bicarbonate. Some of the apparatuses of the present invention comprise an electrolysis chamber for providing hydroxide and mixing equipment for mixing the hydroxide with a gas stream including carbon dioxide to form an admixture including carbonate and/or bicarbonate.
Claims23
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;
- 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.
6 more elements
Dependencies are inferred from the claim text.