NOVELTY - Production of oxygen and absorption of carbon dioxide in single operation, by providing solution with chemical species capable of reacting with carbon dioxide to form insoluble precipitate and oxygen source (4) and redox partner, introducing carbon dioxide into solution, contacting carbon dioxide with chemical species, and precipitating insoluble precipitate from solution.    USE - For producing oxygen and absorbing carbon dioxide in single operation.    ADVANTAGE - The invention increases the variety of energy generating options in an autonomous vehicle (AV) environment. It can integrate independent functions into single device, allowing for further reduction of overall size in a size-restricted environment. It allows for modification of existing systems that were not previously though achievable e.g. it provides viable mechanism for the design of new onboard hydrocarbon reformation systems, provision of gases needed for power generation and disposal of waste gas in closed environment, significant improvement in mission duration over conventional technologies, and significantly reduces the cost for energy aboard an AV.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (a) Apparatus for producing oxygen gas and absorbing carbon dioxide comprising tank (10) for receiving aqueous solution, catalyst for reacting permanganate salt with hydrogen peroxide to produce oxygen positioned in tank to contact the aqueous solution, carbon dioxide inlet to introduce carbon dioxide into the solution, and oxygen outlet to allow gas to escape; and    (b) System for generating power (16) comprising power generator (8) for generating power or electricity, and integrated oxygen generator/carbon dioxide absorber (2).    DESCRIPTION OF DRAWING(S) - The figure is a schematic diagram of an energy generating system incorporating a combustion system for power generation.    Oxygen generator/carbon dioxide absorber (2)    Power generator (8)    Fuel tank (10)    Power (16)