CO₂-negative DACCUSS house wall receives JEC Composites Innovation Award 2025

In the run-up to this year's JEC World's Leading Trade Fair for Composite Materials in Paris, the prototype of a sustainable house wall developed in the BMBF-funded DACCUSS-Pre project was honoured. With a techno-economic and life cycle analysis, our Department of Solar Chemical Process Development contributed important findings on how the planned wall can capture CO₂ during its production and not emit it in comparison to conventional reinforced concrete construction methods.

The house wall is made of a CFS^® material (carbon fibre stone) that combines carbon-negative stones and bio-based fibres. This creates an alternative to conventional CO₂-intensive concrete. Per square metre, 59 kg of carbon dioxide is bound during production via Direct Air Capture (DAC) and CO₂ storage in algae and rock, while conventional cement walls release 98 kg. This results in a negative CO₂ footprint.

The consortium expects the transfer of the technology to industry to make an important contribution to sustainable construction and to deepen expertise in this area. A continuation of the research work is already in preparation.

Partners: Deutsches Institut für Textil- und Faserforschung (DITF), University Hamburg (UHH), Labor für Stahl- und Leichtmetallbau GmbH (LSL), AHP GmbH & Co. KG, leading partner in the production of the prototype: TechnoCarbon Technologies GbR, Technical University of Munich (TUM), GVU mbH, Silicon Kingdom Holding Ltd., Gallehr Sustainable Risk Management GmbH, Peer Technologies GmbH & Co. KG, GREIN srl, Convoris Group GmbH, RecyCoal GmbH, ITA, International Centre for Sustainable Textiles at the RWTH Aachen, LISD GmbH.

Further information on the JEC Composites Innovation Award:

https://www.jec-world.events/program/innovation-awards