Abstract
Grass silage effluents, generated during the silaging of grass for their conservation as green stuff, contain a lot of organic compounds, which are able to complex heavy metals. To assess the leaching potential with respect to metals bound on soils, an effluent from ensiled grass was collected and analyzed. A polluted soil was treated with the effluent in batch and column tests. The leaching rates obtained are: Cd 74,7%, Zn 55,7%, Cu 53,5%, Ni 38,9%, Cr 12,7% and Pb 8,9%.
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