reported that biomass gasification using
enriched air up to 99.5% (v/v) of oxygen, but without steam, led
to increases in H2 + CO from about 30% (v/v) to more than 70%
(v/v), but H2/CO ratio decreased for the highest oxygen concentration.
Enriched air with oxygen generated a syngas with higher LHV
and higher carbon conversion efficiency, but with a lower yield,
corresponding to lower amount of nitrogen on the obtained gas