Ekium participated in the session titled “Biogenic CO₂ – From Flue Gas Capture to Industrial Utilization.” Valentin Malheiro, Head of Decarbonization Innovation at Ekium Pau, presented: “Capturing biogenic CO₂ differently: horizontal cross-flow absorption as a compact and cost-effective solution for biomass and Waste-to-Energy.” This study, conducted in collaboration with TotalEnergies, explores a new CO₂ capture architecture based on a horizontal cross-flow absorption system. The roundtable was moderated by Fabien MICHEL, whom we thank for facilitating this session and fostering high-quality discussions among the speakers. An approach designed for constrained sites The case study focuses on a combined-cycle power plant equipped with a gas turbine, currently fueled by a fossil fuel source. However, the technical-economic analysis shows that this technology has strong potential for adaptation to biogenic CO₂ emitters, notably:
Waste-to-energy incinerators
Biomass boilers
These facilities are often located in constrained suburban or industrial areas, where integration and local acceptance are critical factors. In this context, the horizontal crossflow architecture offers several major advantages:
Highly compact equipment
Reduced footprint
Limited vertical footprint, similar to a conventional industrial building
Modular architecture facilitating integration into existing sites
Reduction in overall capture costs (CAPEX) of up to ~50%
These characteristics allow for better integration into the existing environment, while limiting visual and land-use impacts—two key factors in promoting the acceptability of CCUS projects. Thank you to the organizers of BIO360 Europe and to the session participants for the discussions on the role of biogenic CO₂ capture in the energy transition.