The UIC experimental facility for combustion of materials in a fluidized-bed combustor is described. The combustion and co-combustion studies made in a heated inert bed, of wood, refuse-derived fuel, peanut-hull, paper, cellulose and cardboard pellets are reviewed and discussed. Coal and propane are used as auxiliary fuels. The investigations cover a range of gas velocities, combustion temperatures, fractional excess air values and solid pellet feed rates. The emission of carbon monoxide in the flue gas is monitored, and for most conditions, its value is well within the limit set by the Illinois Environmental Protection Agency. The carbon combustion efficiency values are found to be quite high, 99.8 + percent, validating the thermal degradation capability of the fluidized-bed incinerator. Further, the thermal combustion efficiencies are also equally high, which reinforces the concept of waste to energy generation.