Characterization of Sorbents for Controlling Ammonia in Spacecraft Cabin Air

Monje, Oscar ; Kayatin, Matthew J ; Perry, Jay L

关键词: SORBENTS;    AMMONIA;    SPACECRAFT CABIN ATMOSPHERES;    ACTIVATED CARBON;    TRACE CONTAMINANTS;    CLOSED ECOLOGICAL SYSTEMS;    SPACECRAFT ENVIRONMENTS;    INTERNATIONAL SPACE STATION;   

RP-ID  :  ICES-2018-253,KSC-E-DAA-TN58171

学科分类：航空航天科学

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

The trace contaminant control system (TCCS) utilizes packed beds of Barnebey-Sutcliffe (B-S) Type 3032 to remove ammonia from ISS (International Space Station) cabin air. BS Type 3032, an acid-impregnated activated carbon, is no longer produced and must be replaced. The adsorptive capacities of Calgon Carbon Ammonasorb II and Molecular Products Chemsorb® 1425 for ammonia were measured using moist (40% RH (Relative Humidity)) spacecraft simulated gas streams. These candidate replacement sorbents had 66% greater ammonia removal capacities at low (5 ppm) ammonia concentrations than B-S Type 3032.