Environmental impact of industrial sludge stabilization/solidification products: Chemical or ecotoxicological hazard evaluation?

► Nowadays, the classification of industrial solid wastes is not based on risk analysis, but only in chemical leachate constitution. ► Generated ecotoxicological data showed that the results of chemical analysis sometimes underestimate or overestimate the hazardous potential of S/S derived products. ► This is a evidence that solid (waste) classification must be made preferentially by ecotoxicity tests and policy makers must pay attention to this type of evidence.