Method of carbon mineralization
AssigneeKing Fahd University of Petroleum and Minerals
InventorAhmed Zarzor Hussien Yaseri
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Abstract
A method of carbon mineralization includes exposing a solution including a plurality of metal salts and a surfactant to carbon dioxide at a pressure in a range from 300 to 700 pounds per square inch (PSI) to form a carbonated solution. The method further includes adding a base to the carbonated solution until the pH is above 10 to form a reaction mixture and reacting the reaction mixture to form mineral precipitates. The carbon dioxide reacts with the metal salts to form the mineral precipitates. The surfactant includes a tertiary amine including one alkyl group and two ethoxylate groups including two or more ethoxy units. The mineral precipitates include calcite, portlandite, brucite and halite. The mineral precipitates are in the form of particles having an average size in a range from 1 to 75 μm.
Claims20
A method of carbon mineralization, comprising:
- exposing a solution comprising a plurality of metal salts and a surfactant to carbon dioxide at a pressure in a range from 300 to 700 pounds per square inch (PSI) to form a carbonated solution;
- adding a base to the carbonated solution until the pH is above 10 to form a reaction mixture;
- and
- reacting the reaction mixture to form mineral precipitates,
- wherein the carbon dioxide reacts with the metal salts to form the mineral precipitates,
- wherein the surfactant comprises a tertiary amine comprising one alkyl group and two ethoxylate groups comprising two or more ethoxy units,
- wherein the mineral precipitates comprise calcite in a range from 30 to 70 weight percent (wt. %), portlandite in a range from 1 to 40 wt. %, brucite in a range from 15 to 35 wt. %, and halite in a range from 3 to 20 wt. %, based on the total weight of mineral precipitates, and
- wherein the mineral precipitates are in the form of particles having an average size in a range from 1 to 75 μm.
Dependencies are inferred from the claim text.