Summary:

Phytocoenosis with main participation of Calamagrostis Epigejos and Sol-idago Sp. were created on the biological reclaimed post-industrial wastelands formed from coal wastes dump or Zn-Pb ores postflotation settlings. This plants are potential energetic biomass.
The paper presents results of analysies of Fe, Pb, Zn, Hg, Na, K, Ca con-centration in plants taken from coal wastes dump and Zn-Pb ores postflotation settlings.
This elements have basic influence on mineral matter behaviour during bi-omass co-burning in fluidized beds.