Carbon dioxide removal system for closed loop atmosphere revitalization, candidate sorbents screening and test results

► Carbon dioxide must be captured for manned-spaceflight missions. ► Standard and novel candidates for carbon dioxide capture in space were tested. ► Zeolite LiLSX has greater capacity for CO2 than 5A at 2.5 and 5 Torr CO2. ► LiLSX and 5A have similar mass transfer kinetics based on breakthrough curves.