2018-07-062018-07-062018-07-08ICES_2018_3http://hdl.handle.net/2346/74024Gregory Cmarik, Jacobs ESSSA, NASA/MSFC/ES62James Knox, NASA/MSFC/ES62ICES302: Physio-chemical Life Support- Air Revitalization Systems -Technology and Process DevelopmentThe 48th International Conference on Environmental Systems was held in Albuquerque, New Mexico, USA on 08 July 2018 through 12 July 2018.Environmental Control and Life Support requires highly effective CO2 removal systems. The current system onboard the International Space Station is known as Carbon Dioxide Removal Assembly. Recent high-fidelity simulation of this system predicted a major efficiency gain via reduction of desiccant zeolite. Commercial beaded 13X zeolite is used in the desiccant bed to scrub water below 1 ppm but is also a highly active CO2 sorbent. The simultaneous adsorption of water vapor and CO2 is known to strongly favor water, but more accurate measurements are needed. This work details the characterization of the zeolite to be used in the next-generation CO2 removal system for co-adsorption of water and CO2.application/pdfCarbon Dioxide Removal AssemblyCDRA4 bed molecular sieve4BMS13XzeolitedesiccantcoadsorptionPresentations