A critical review of new advancements in HF-RTSA CO2 capture

On the path to achieving the net-zero carbon targets while meeting growing global energy demand, the development of efficient CO 2 capture strategies is crucial for a smoother transition to a low-carbon economy. Among existing capture technologies, Rapid Temperature Swing Adsorption (RTSA) has emerged as a promising alternative to conventional solvent-based processes, reducing regeneration energy penalties. In particular, polymeric hollow fiber modules have attracted significant attention as advanced RTSA platforms, owning to their high surface area-to-volume ratio, efficient thermal management, and lower pressure drops compared to traditional packed-bed systems. This review comprehensively examines recent advancements in hollow fiber-based RTSA for CO 2 capture, focusing on technological developments, polymeric structures, novel adsorbents, and innovative module designs. Special attention is given to the effects of impurity gases, adsorbent stability, and the optimization of hollow fiber configurations to enhance overall performance. The review also emphasizes HF-RTSA's potential to deliver cost-effective and energy-efficient CO 2 capture solutions at industrial scale.