Increasing the valorization potential of critical raw materials from solid residues of waste-to-energy processes

If non-recycable waste is incinerated in a waste-to-energy (WtE) plant, the critical raw materials it contains, such as e.g. antimony or phosphorous, largely remain in the solid residues. The valorization potential of critical raw materials in solid WtE residues can be increased by increasing their concentration by mono-incinerating selected waste streams and by controlling their speciation - in view of further recovery - upon incineration. Therefore this research project aims at gaining fundamental insight in the partitioning of critical raw materials over the different solid residues of WtE processes and in their speciation, both as a function of the waste composition and of process parameters such as treatment temperature, residence time and oxygen concentration.

Keywords:raw materials

Disciplines:Ceramic and glass materials, Materials science and engineering, Semiconductor materials, Other materials engineering