Intrinsic co2 capture process for the production of metal oxides, cement, co2 air capture or a combination thereof

A process for producing captured carbon dioxide comprising:

• reacting calcium carbonate with sulfur dioxide solution to produce solid calcium sulfite and gaseous carbon dioxide;
• thermally decomposing said calcium sulfite to produce gaseous sulfur dioxide;
• and
• recovering gaseous sulfur dioxide by dissolving it in a solution;
• wherein the gaseous carbon dioxide is captured and wherein the reaction of calcium carbonate with sulfur dioxide solution is conducted under conditions to substantially prevent the formation of sulfate salts.