Efficiency of fertilisers in restoring ecosystems on fly ash deposits

The effect of municipal sludge compost application as a source of nutrients in the vegetation of fl ash deposits with perennial plants Lolium perenne species was evaluated. studies were
carried out on experimental plots including compost alone and mixed with indigenous pillared
tuff. The study demonstrates the effectiveness of each type of treatment on plants coverage, the
amount of biomass and resulted metal bioaccumulation in the aerial parts of harvest. Pillared tuff
used as amendment has determined the obtaining of a vegetable cover with low accumulation of
toxic metals. Fertilisation with compost resulted in removal of the amount of Cr and Ni with 60 and
76% in the case of Pb in the aerial parts of plants versus the bioaccumulation in plants grown on
fl ash experimental variant. Addition of indigenous volcanic pillared tuff has determined a higher
removal in the accumulation of toxic metals by over 10%. The highest removal was recorded in Pb
bioaccumulation in the aerial parts of Lolium perenne versus the accumulation in plants grown on
untreated variant fl ash.