Management of waste into energy that is economically possible with fluidized bed gasification technology. Gasification is a thermo-chemical process that converts biomass/solid waste into producer gas (CO, H2, CO2 and HC) by using air, steam, oxygen or its mixtures as a gasification agent. In a study of floating waste fuel gasification in pellet form with 1, 25 cm diameter and 1.25 cm height and of 1.22 gram mass, where is used oxygen enriched air as gasification agent. The operating temperature (Top) at reactor selected 500oC and 600oC with superficial velocities (Uo) are 0.105 m/sec, 0.125 m/sec, 0,145 m/sec., and 0,165 m/sec. From the research results showed that by increasing the operating temperature of 500oC to 600oC and increasing the superficial velocity of 0.105 m/sec to 0.125 m/sec, did not influence directly the increasing of percentage/levels of CO, CO2 and HC gas that produced.