Method and system for electrolysis-assisted mineralization of carbon dioxide with industrial alkali waste

A method for electrolysis-assisted mineralization of carbon dioxide, comprising:

• mixing an industrial alkali waste material with ammonium chloride or hydrogen chloride in presence of an input water stream in an extraction reactor to extract calcium and magnesium from the industrial alkali waste material as metal chlorides and form a first mixture;
• passing the first mixture to an in-line electrolysis apparatus to produce an alkaline water stream comprising hydroxide ions within a first pH range through electrolysis of the input water stream and concomitantly initiating production of metal hydroxides comprising calcium hydroxide to obtain a second mixture;
• filtering the second mixture in a filtration reactor to obtain a silica byproduct at a first end of the filtration reactor and a fluidic filtrate comprising the metal hydroxides comprising the calcium hydroxide at a second end of the filtration reactor;
• causing carbon dioxide in a gaseous form captured from a defined carbon dioxide source to be injected into the fluidic filtrate to obtain a third mixture comprising calcium carbonate with a first carbonation rate;
• directing the third mixture to an inlet of a modified hydrocyclone configured as a carbon dioxide mineralization reactor;
• causing the third mixture to move in the modified hydrocyclone to obtain carbonate slurry with a second carbonation rate;
• and
• releasing the carbonate slurry comprising calcium carbonate in a defined purity parameter range from an underflow section of the modified hydrocyclone while concurrently regenerating and releasing an electrolyzed-alkaline water solvent blend devoid of carbon dioxide for reuse from an overflow section of the modified hydrocyclone.

A system for electrolysis-assisted mineralization of carbon dioxide, comprising:

• one or more controllers configured to:
• control an in-line electrolysis apparatus to produce an alkaline water stream comprising hydroxide ions within a first pH range through electrolysis of an input water stream;
• control blending of the alkaline water stream comprising the hydroxide ions with a solvent to obtain an electrolyzed-alkaline water solvent blend having a second pH range greater than the first pH range;
• control mixing of the electrolyzed-alkaline water solvent blend with an industrial alkali waste material in a filtration reactor to obtain a silica byproduct at a first end of the filtration reactor and a fluidic filtrate comprising calcium hydroxide at a second end of the filtration reactor;
• control injection of carbon dioxide in a gaseous form captured from a defined carbon dioxide source into the fluidic filtrate to obtain a first mixture comprising calcium carbonate with a first carbonation rate;
• control a flow of the first mixture to an inlet of a modified hydrocyclone configured as a carbon dioxide mineralization reactor;
• control a movement of the first mixture in the modified hydrocyclone to obtain carbonate slurry with a second carbonation rate;
• and
• control release of the carbonate slurry comprising calcium carbonate in a defined purity parameter range from an underflow section of the modified hydrocyclone while concurrently regenerating and releasing the electrolyzed-alkaline water solvent blend devoid of carbon dioxide for reuse from an overflow section of the modified hydrocyclone.