Residues from waste incineration, from coal combustion, from pyrometallurgical processes and ashes from biomass firing can be regarded as secondary resources in the future. In this regard, the key aspects of research at the ABF-BOKU institute are upgrading of MSWI bottom for use as a secondary construction material, weathering processes occurring in slags and ashes and treatment with CO2-containing gases (active carbonation). The dynamics of reactions of alkaline residues with CO2 and H2S is investigated because of its significance for upgrading of biogas (BABIU process). Fractions which are not utilized have to be deposited in an eco-friendly manner. Specific laboratory devices and a geochemical model (including data bases regarding “solubility”) are available at the institute as tools for evaluation of the long- term behavior of inorganic residues. Contact: Peter Mostbauer, MA
