Combustion experiments in air have been performed using TG/DTA analysis, wh
ich served for ignition temperature and kinetics data determination. Fly-as
h carbon was treated with carbonates and hydroxides. The ignition temperatu
re dependence on alkali metal salt concentration was investigated. Results
showed that the ignition temperature decreased for treated samples. The act
ivation energy of impregnated samples decreased. Qualitative comparison of
modified and original samples showed that higher heat of combustion was ach
ieved for impregnated samples. (C) 1999 Elsevier Science B.V. All rights re
served.