One of the key advancements in combustion technologies for tackling global warming and lowering CO2 emissions is oxy-fuel combustion. This approach typically combines the use of oxygen-enriched air with flue gas recirculation. However, this study examines oxygen-enriched combustion independently, without the inclusion of flue gas recirculation. In addition to the altered combustion atmosphere, the use of waste woodyy biomass as fuel contributes to the potential for achieving negative carbon emissions. The focus lies in examining variations in emissions of major flue gas components when using oxygen-enriched combustion versus traditional air combustion. As a subset of oxy-fuel combustion technologies, oxygen-enriched combustion is especially notable for its potential to reduce CO2 emissions, aligning with the implementation of Carbon Capture and Storage or Utilization methods. The experimental research was conducted in a pulverized-fuel combustion lab-scale furnace at a constant combustion process temperature of 950 ℃. The research results demonstrate the significant impact of the altered oxydant of combustion on the emission of all pollutants.