Studies to limit bioaccumulation of heavy metals in biomass grown on lignite fly ash deposits

The bio accumulation of Cr, Cu, Fe, Mn, Ni, Pb and Zn, in clover harvest is significantly reduced when using
municipal stabilized sludge (biosolids) fertilizer mixed with indigenous volcanic tuff. This study investigates
an ecological vegetation method for lignite fly ash deposits. Furthermore, adding biosolids provides nutrients
and the tuff secure the water retention: they gradually released from the plant need. The coverage of
selected plant Trifolium pretense was evaluated in the following variants: fly ash in absence/presence of
biosolids fertilizer and volcanic tuff. The vitality and abundance of plant was significantly higher when using
biosolids and tuff vs. other variants.