USE OF INCINERATOR SLAGS AS ROAD-BED AND HEAVY-METALS RELEASE

The problems associated with the use of slags from municipal solid waste incinerators as road-bed arise from the possibility of undesired effects on environment and human health due to the release of heavy metals through atmospheric precipitations. The aim of the research we are carrying out is to evaluate the heavy metals release by means of tests which simulate the rain leaching action. The first part of the research, the results of which are reported in this paper, studied the release of several heavy metals in water solutions at different pH periodically renewing the liquid phase in contact with the solid phase (slags)