Nature protection technologies

3.5.4.5. Effects of hard coal ash irrigation on release of chemical elements

Part 3. ASH AND SLAG HANDLING

3.5. Applications of ash and slag from power coals

3.5.4. Use of ash and slag for improving the properties of soil

3.5.4.5. Effects of hard coal ash irrigation on release of chemical elements

T. Wojcieszczuk, E. Meller, A. Sammel, S. Stankowski, West Pomeranian University of Technology in Szczecin, Poland

 Under laboratory conditions chemical composition of leachates from the soil fertilized with increasing doses of ash and chemical content of water passing through ash, ash+zeolite and ash+brown coal were determined. Additionally, chemical content of surface lysimeters water, the water passing through the profile as well as groundwater on the experimental object of power plant „Dolna Odra”, were analysed. The amounts of chemical elements, soluble in water, from ashes of different origin were compared.

Chemical composition of leachates was affected by the origin of hard coal, the method of fertilising the surface layer of pile and the dose of ash applied as fertiliser.