NEUTRALIZATION OF ACID AND PRODUCTION OF CARBONATE-CONTAINING COMPOSITIONS
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Accused Products
Abstract
Provided are methods and systems for neutralizing acidic solution. In such methods, an acidic solution may be generated and methods of raising the pH of the acidic solution are provided that may utilize rocks or mineral. Methods for processing rocks and minerals for digestion by an acidic solution are described. Digestion products of rocks and minerals are provided.
170 Citations
112 Claims
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1-72. -72. (canceled)
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73. A method comprising:
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a. an electrochemical reaction to generate a first solution in a first compartment and a second solution in a second compartment of an electrochemical system wherein the first solution is alkaline and the second solution is acidic, wherein the acidic solution has a pH that is less than 1.3; b. sequestering carbon dioxide from a gas comprising carbon dioxide;
wherein the sequestering the carbon dioxide comprises contacting the gas with a first portion of the first solution;c. digesting an acid neutralizing material with the second solution to produce a digestion product comprising a third solution, wherein the pH of the third solution is higher than pH of the second solution. - View Dependent Claims (74, 75, 76, 77, 78, 85, 89, 91, 92, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107)
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79. A method comprising:
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a. generating a first solution and a second solution in an electrochemical reaction; wherein the first solution is alkaline and the second solution is acidic and wherein the electrochemical reaction is configured to not produce chlorine gas b. digesting an acid neutralizing material with the second solution to form a slurry comprising a third solution, wherein the pH of the third solution is greater than the second solution by at least 0.5 pH units. - View Dependent Claims (80, 81, 82, 83, 84, 86, 87, 88, 90, 93, 94, 95)
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108. A system for sequestering carbon dioxide comprising:
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a. an electrochemical system suitable for generating an first solution in a first compartment and a second solution in a second compartment, wherein the second compartment is suitable for containing a solution that has a pH that is less than 1.3; b. a first reaction vessel operably connected to a source of waste gas and the electrochemical system connected to an absorber suitable for contacting a gas comprising carbon dioxide with the first solution to sequester carbon dioxide; and c. a second reaction vessel operably connected to the electrochemical system and a source of an acid neutralizing material suitable to contact the second solution comprising a pH of less that 1.3 with the acid neutralizing material wherein the contact is sufficient to form a third solution that has a higher pH than the second solution. - View Dependent Claims (109, 110, 111, 112)
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Specification