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Bulletin of UASVM Agriculture
Year: 2010  |  Volume: 67  |  Issue: 2  |  Page No.: 76 - 79

Revegetation of Fly Ash Sites by Using Municipal Sludge

Smaranda MASU, Florica MORARIU and Anca Diana PRICOP    

Abstract: Fossil coal combustion in power plants is a principal energy sources in World but our residues can be considered as a waste. Disposal residues as landfills are under environmental regulations and laws. It is desirable the revegetate these sites to stabilize surface fly ash against water and wind erosion and for aesthetic landscape. Vegetation to disposal sites of fly ash resulting from coal combustion is possible in a short time by fertilization with municipal sludge its own or mixed with indigenous volcanic tuff, with clinoptilolite. Synergistic effect of municipal sludge (biosolids) with volcanic tuff determines vegetation cover up to 60-65% and reduces the bioavailability of toxic metals in soil. Treatment with biosolids and biosolids with volcanic tuff reduces the bioavailability of Cr. and Pb. and up to 50% Ni. Cu bioaccumulation is reduced with 11.6 -22.8%.

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