(625a) A Multiscale Techno-Economic Framework for Evaluating Feasible Adsorbent Costs in Biogas Upgrading

As the demand for carbon-neutral energy increases, biogas upgrading via pressure swing adsorption (PSA) is gaining attention as a scalable route to produce biomethane. While numerous advanced adsorbents have been developed, their commercial deployment is hindered by a lack of cost data and integrated process-level evaluation. This study introduces a multiscale techno-economic framework to assess the economic viability of adsorbents by linking molecular-level properties to process-scale performance. This study propose the concept of feasible adsorbent cost, defined as the maximum adsorbent cost (MACO) at which an adsorbent enables biomethane production at competitive market prices. By analyzing the sensitivity of the levelized cost of methane to adsorbent price under optimized PSA operating conditions, this approach offers a new metric to guide material evaluation toward real-world implementation. The proposed framework contributes a practical tool for early-stage adsorbent screening by quantitatively linking material properties to economic feasibility, providing a foundation to bridge the gap between adsorbent innovation and process-level commercialization.