公开(公告)号：US20240141510A1

公开(公告)日：2024-05-02

申请号：US18548303

申请日：2022-03-17

Applicant: ELECTRASTEEL, INC.

Inventor： Ai Quoc PHAM ,  Sandeep NIJHAWAN ,  Kevin GALLOWAY ,  Adolfredo ALVAREZ ,  Philip WAGNER ,  Steven FATUR

IPC: C25B1/20 ,  C02F1/461 ,  C25B1/22 ,  C25B9/19 ,  C25B9/70 ,  C25B15/08 ,  C02F101/10 ,  C02F103/08

CPC classification number: C25B1/20 ,  C02F1/46104 ,  C25B1/22 ,  C25B9/19 ,  C25B9/70 ,  C25B15/083 ,  C02F2101/10 ,  C02F2103/08

Abstract: A method of making a material for capturing carbon dioxide from the earth's atmosphere, comprises producing an acid and a base with an electrochemical acid-base generator; dissolving a mineral in the acid to produce a mineral rich solution, separating silica from the mineral rich solution to form a silica depleted solution; adding a first portion of the base to the silica depleted solution to remove impurities by precipitation, adding a second portion of the base until ferrous hydroxide (Fe(OH)2) precipitates, then pausing base addition and removing the ferrous hydroxide precipitate from the solution. Then adding a third portion of the base to the iron-depleted solution to precipitate magnesium hydroxide (Mg(OH)2) and/or calcium hydroxide (Ca(OH)2). Then recovering a salt solution and directing the recovered salt solution to the electrochemical acid-base generator to

公开(公告)号：US20240425994A1

公开(公告)日：2024-12-26

申请号：US18825688

申请日：2024-09-05

Applicant: ELECTRASTEEL, INC.

Inventor： Ai Quoc PHAM ,  Sandeep NIJHAWAN ,  Kevin GALLOWAY ,  Adolfredo ALVAREZ ,  Philip WAGNER ,  Steven FATUR

IPC: C25B1/20 ,  C02F1/461 ,  C02F101/10 ,  C02F103/08 ,  C25B1/22 ,  C25B9/19 ,  C25B9/70 ,  C25B15/08

Abstract: A method of making a material for capturing carbon dioxide from the earth's atmosphere, comprises producing an acid and a base with an electrochemical acid-base generator; dissolving a mineral in the acid to produce a mineral rich solution, separating silica from the mineral rich solution to form a silica depleted solution; adding a first portion of the base to the silica depleted solution to remove impurities by precipitation, adding a second portion of the base until ferrous hydroxide (Fe(OH)2) precipitates, then pausing base addition and removing the ferrous hydroxide precipitate from the solution. Then adding a third portion of the base to the iron-depleted solution to precipitate magnesium hydroxide (Mg(OH)2) and/or calcium hydroxide (Ca(OH)2). Then recovering a salt solution and directing the recovered salt solution to the electrochemical acid-base generator to produce a new acid and a new base. The magnesium hydroxide and/or calcium hydroxide may be used to capture and sequester carbon dioxide from a CO2-containing gas (e.g., air) by forming a carbonate or from the ocean by forming bicarbonate.