2016-07-282016-07-282016-07-10ICES_2016_27http://hdl.handle.net/2346/67470United StatesNASA ARCNASA Ames Research CenterNational Aeronautics and Space Administration (NASA)NASA MSFC302ICES302: Physio-chemical Life Support- Air Revitalization Systems -Technology and Process DevelopmentVienna, AustriaTra-My Justine Richarson, Logyx LLC, Bioengineering Branch, NASA Ames Research Center, USADarrell Jan, NASA Ames Research Center, USAJohn Hogan, NASA Ames Research Center, USARoger Huang, NASA Ames Research Center, USAGary H. Palmer, NASA Ames Research Center, USAThe 46th International Conference on Environmental Systems was held in Vienna, Austria, USA on 10 July 2016 through 14 July 2016.Removal of carbon dioxide (CO2)is a necessary step in air revitalization and is often accomplished with sorbent materials. Since moisture competes with CO2 in sorbent materials, it is necessary to remove the water first. This is typically accomplished in two stages: “bulk” removal and “residual” drying. Silica gel is used as the bulk drying material in the Carbon Dioxide Removal Assembly (CDRA) in operation on ISS. There has been some speculation that silica gel may also be capable of serving as the residual drying material. This paper continues earlier efforts, on test apparatus and procedures, and results for determining the performance of silica gel in residual air drying.application/pdfengLife SupportAir RevitalizationSorbentSilica GelPresentation