2016-07-282016-07-282016-07-10ICES_2016_12http://hdl.handle.net/2346/67475United StatesNASA JSCNASA404ICES404: International Space Station ECLS: SystemsVienna, AustriaJay Perry, NASA-George C. Marshall Space Flight Center, USALayne Carter, NASA-George C. Marshall Space Flight Center, USAMatthew Kayatin, NASA-George C. Marshall Space Flight Center, USADaniel Gazda, NASA-Lyndon B. Johnson Space Center, USATorin McCoy, NASA-Lyndon B. Johnson Space Center, USAThe International Space Station (ISS) Environmental Control and Life Support System (ECLSS) provides a working environment for 6 crew through atmosphere revitalization and water recovery systems. In the last year, elevated ethanol levels have presented a unique challenge for the ISS ECLSS. Ethanol is monitored on the ISS by the Air Quality Monitor (AQM). The source of this increase is not currently known though it does appear to correlate with vehicle docking. This paper documents the credible sources for the increased ethanol concentration, the monitoring provided by the AQM, and the impact on the atmosphere revitalization and water recovery systems.application/pdfengethanolAtmosphereWaterPresentation