REMOVING CARBON DIOXIDE FROM WASTE STREAMS THROUGH CO-GENERATION OF CARBONATE AND/OR BICARBONATE MINERALS

摘要

All of the methods and devices disclosed and claimed herein can be made and executed without undue experimentation in light of the present disclosure. While the methods and devices of this invention have been described in terms of preferred embodiments, it will be apparent to those of skill in the art that variations may be applied to the methods and devices and in the steps or in the sequence of steps of the method described herein without departing from the concept, spirit, and scope of the invention. More specifically, it will be apparent that certain compositions which are chemically related may be substituted for the compositions described herein while the same or similar results would be achieved. All such similar substitutes and modifications apparent to those skilled in the art are deemed to be within the spirit, scope, and concept of the invention as defined by the appended claims.

主权项

1. A method of sequestering carbon dioxide contained in a gas stream, comprising the steps of:
(a) obtaining a hydroxide in an aqueous mixture; (b) admixing the hydroxide with carbon dioxide contained in the gas stream 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; andelectrolyzing the protonated brine solution to produce a hydroxide; wherein step (b) comprises altering the product equilibrium to favor the production of bicarbonate products.