Waste rubber (tires), wood pellet and pea coal samples (size below 2 cm) were fluidized in air and combusted at bed temp. 500-800 degrees C to study the exhaust gas compn. The emission of org. compds. (satd. aliph. hydrocarbons, PhH, aldehydes) and CO decreased down to near zero with increasing combustion temp. The NOx content after combustion at 700 degrees C was 94-110 mg/g.