Bellussi et al. (2026): Scale-Consistent Adsorption Model for Polymer-Based Adsorbents in Direct Air Capture

Francesco Maria Bellussi, Paweł P. Ziemiański, Ilia I. Sadykov, Sandra Galmarini and Florian Kiefer, IN: ChemRxiv, https://doi.org/10.26434/chemrxiv.10001665/v1

Energy-efficient and cost-effective Direct Air Capture of CO₂ is considered key for carbon dioxide removal and carbon capture and utilization. However, separating CO₂ from air is inherently challenging due to its low concentration and fluctuating humidity levels. Polymer-based chemisorbents combine good selectivity and capacity and are currently regarded as state-of-the-art benchmark materials. Nevertheless, their complex interactions with water complicate both experimental characterization and predictive modeling. The authors introduce a modeling framework that combines flexibility in contactor geometry and accurate reproduction of the physical phenomena observed for the amine-functionalized resin Lewatit VP OC 1065 under varying humidity conditions

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