Carbon capture using electrochemically-produced acid and base

A method comprising:

• producing an acid and a base with an electrochemical acid-base generator;
• dissolving a mineral in the acid to produce a mineral rich solution, wherein the mineral comprises iron, silica, of magnesium, aluminum, and calcium;
• separating insoluble solids from the mineral rich solution to form a solids-depleted solution;
• adding, in a first precipitation step, a first portion of the produced base to the solids-depleted solution to remove first impurities by precipitation, thereby forming a first impurity-depleted solution, wherein the first precipitation step comprises increasing the pH of the solids-depleted solution to a pH selected from the range of 3 to 5 thereby precipitating aluminum hydroxide;
• adding, in a second precipitation step, a second portion of the base to the impurity-depleted solution until the pH of the impurity-depleted solution reaches a pH range at which a second precipitate product comprising ferrous hydroxide is precipitated, thereby forming an iron-depleted solution, and removing the ferrous hydroxide precipitate product from the iron-depleted solution;
• adding, in a third precipitation step, a third portion of the base to the iron-depleted solution to raise the pH of the iron-depleted solution to precipitate magnesium hydroxide and/or calcium hydroxide to form a recovered salt solution, then separating the magnesium hydroxide and/or calcium hydroxide from the recovered salt solution;
• and
• directing the recovered salt solution to the electrochemical acid-base generator to produce a new acid and a new base.