Although proposed as a means of increasing efficiency, in recent years, interest has been shown in CLC as a carbon capture technique.[7][8] Carbon capture is facilitated by CLC because the two redox reactions generate two intrinsically separated flue gas streams: a stream from the air reactor, consisting of atmospheric N 2 and residual O 2, but sensibly free of CO 2; and a stream from the fuel reactor predominately containing CO 2 and H 2O with very little diluent nitrogen. The air reactor flue gas can be discharged to the atmosphere causing minimal CO 2 pollution. The reducer exit gas contains almost all of the CO 2 generated by the system and CLC therefore can be said to exhibit 'inherent carbon capture', as water vapor can easily be removed from the second flue gas via condensation, leading to a stream of almost pure CO 2.