Concerning CO2 capture, gasification will play a key role in the future. Within this context, we mean oxygasification
as the gasification of coal by using oxygen and steam as gasifying agents.
Since nitrogen has been previously removed, oxy-gasification, and subsequent gas cleaning processes, produce a
gas stream mainly composed of CO and H2, which opens a promising way to CO2 capture. Moreover, when biomass is
gasified with coal, and then CO2 is captured, the emission balance of this component can reduce substantially and
even could become negative. Thus, we define oxy-co-gasification as the gasification of coal and biomass by using
oxygen and steam as gasifying agents. This technique appears as a very promising way not only to reduce CO2
emissions but also to increase the biomass contribution to electricity generation.