TECHNOLOGY FOCUS - CHEMICAL ENGINEERING - Preferred Components: The oxygen source and redox partner comprise hydrogen peroxide and permanganate salt, and the chemical species capable of reacting with carbon dioxide comprises manganese (II) ion. The solution further includes cation capable of reacting with carbon dioxide to from insoluble carbonate. The cation is from calcium, barium, magnesium, silver, strontium, cobalt, nickel, cadmium, copper, iron, or lead. The permanganate salt comprises calcium permanganate. The catalyst is from iron, copper, platinum, or nickel. The hydrocarbon is from methanol, ethanol, diesel fuel, or gasoline.Preferred Process: The production of oxygen an absorption of carbon dioxide further includes:(a) contacting carbon dioxide with calcium ion in solution;(b) allowing calcium carbonate to precipitate;(c) providing diffuser or atomizer for introducing carbon dioxide;(d) removing oxygen from solution;(e) providing tank separated into first and second chamber;(f) introducing carbon dioxide into second chamber;(g) removing unreacted carbon dioxide gas from solution;(h) storing unreacted carbon dioxide as a gas;(i) chemically storing unreacted carbon dioxide as insoluble carbonate salt;(j) providing sulfur to solution;(k) contacting sulfur with manganese (II) ion; and(l) allowing sulfur with manganese compound to precipitate.Preferred Material: The catalytic material is from polytetrafluoroethylene or carbon fiber.    TECHNOLOGY FOCUS - MECHANICAL ENGINEERING - Preferred Component: The carbon dioxide inlet has diffuser. The tank further includes plate(s) separating tank into first and second fluidly coupled chamber, first chamber, and second chamber. The oxygen outlet comprises a membrane selectively permeable to oxygen. The power generator includes apparatus from turbine, fuel cell, internal combustion engine, or heat powered engine. The heat-powered engine comprises brayton cycle engine or sterling engine. It also includes fuel cell and reformer to convert hydrocarbon into hydrogen and carbon dioxide. The fuel cell comprises proton exchange membrane (PEM) fuel cell.