BioReACT - Reactive biomass-clay biochar via autothermal co-pyrolysis

This research project focuses on the development of innovative residue-based cement additives that are both reactive and allow for long-term CO₂ storage in building materials. To achieve this, clay-rich residues are processed together with organic waste streams in a joint, energy-efficient co-pyrolysis process. By utilizing the energy byproducts (pyrolysis gases) from biomass pyrolysis, the calcination of the clay fraction can be carried out in a largely energy-self-sufficient, which minimizes the need for additional energy sources. The resulting Supplementary Cementitious Material (SCM) is a biochar with an integrated, pozzolanic-active clay component, making it suitable as a sustainable binder component that can significantly reduce the carbon footprint of building materials while simultaneously improving key material properties.