The present invention provides a system of capturing carbon dioxide (CO2) and other gases from combustion engines. The system includes a housing having a plurality of compartments fluidly connected to one another. The housing can be disposed within an exhaust system of a vehicle to capture CO2 prior to being expelled therefrom. The compartments form a cartridge that is removable from the housing and interchangeable with a second cartridge. Each of the end compartments are closed with a semipermeable filter that allows gases and small molecules to pass through, but not solids or liquids. A first compartment is filled with activated charcoal or silica gel to adsorb CO2, wherein a second compartment is filled with a nitrogen containing compound, such as ammonia. A chemical reaction occurs between the nitrogen and remaining gases forming an inert byproduct, such as, ammonium carbonate, ammonium bicarbonate, ammonium carbamate, and/or urea.