Method of capturing co2 from a gas mixture
AssigneeMission Zero Technologies Ltd
InventorsGael GOBAILLE-SHAW, Constantin SAHM, Audrey LUIZ, Trishan SHARMA
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Abstract
Method of capturing CO2 from a gas mixture (108) comprising the steps of: contacting the gas mixture (108) with a capture solution (110); dissolving CO2 in the capture solution to form a modified capture solution comprising bicarbonate ions; performing electrodialysis on the modified capture solution using a bipolar membrane electrodialysis system (104) to transfer bicarbonate ions into a release solution (121) and regenerate the capture solution; wherein the capture solution comprises a metal carbonate, and wherein the capture solution contacts or comprises a promoter which accelerates the rate of bicarbonate formation in the capture solution.
Claims34
A method of capturing CO2 from a gas mixture comprising the steps of:
- transferring CO2 from the gas mixture into a capture solution to form a modified capture solution comprising bicarbonate ions;
- performing electrodialysis on the modified capture solution using a bipolar membrane electrodialysis system, to transfer bicarbonate ions into a release solution and regenerate the capture solution;
- wherein the capture solution comprises a metal carbonate, and wherein the capture solution contacts a promoter which accelerates the transfer of CO2 into the capture solution,
- wherein the promoter is immobilized on a promoter-functionalized surface, and wherein:
- a. the capture solution is in contact with the promoter-functionalized surface during the step of contacting the gas mixture with the capture solution, or
- b. the capture solution contacts the promoter-functionalized surface after the step of contacting the gas mixture with the promoter.
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Dependencies are inferred from the claim text.