WIT Press


Association Forms Of Heavy Metals In Fly Ash From Power Plants

Price

Free (open access)

Paper DOI

10.2495/EURO990602

Volume

36

Pages

5

Published

1999

Size

447 kb

Copyright

WIT Press

Author(s)

P. Polic, I. Grzetic, D. Djordjevic, A. Popovic and D. Markovic

Abstract

Association Forms of Heavy Metals in Fly Ash from Power Plants A contribution to subproject BIATEX-2 P Polic, I. Grzetic, D. Djordjevic, A Popovic and D Markovic Department of Chemistry, University of Belgrade, P.O. Box 158, 11001 Belgrade, Yugoslavia Introduction During coal combustion, the organic component becomes oxidised, while inorganic components mostly remain in the ash. All natural elements were found in coal, except some very rare ones, like polonium, francium, astatine, etc. (Finkelman 1993). The variability of inorganic constituents is influenced by biological, hydrological and geochemical factors and their association forms govern their behaviour and their technological and environmental impact. Emission and deposition of coal ash represent major environmental problems, due to the large amount of ash obtained. The environmental impact of ash has at least two aspects: a) emissi

Keywords