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Investigation of the Makeup, Source, and Removal Strategies for Total Organic Carbon in the Oxygen Generation System Recirculation LoopSince 2007, the Oxygen Generation System (OGS) on board the International Space Station (ISS) has been producing oxygen for crew respiration via water electrolysis. As water is consumed in the OGS recirculating water loop, make-up water is furnished by the ISS potable water bus. A rise in Total Organic Carbon (TOC) was observed beginning in February, 2011, which continues through the present date. Increasing TOC is of concern because the organic constituents responsible for the TOC were unknown and had not been identified; hence their impacts on the operation of the electrolytic cell stack components and on microorganism growth rates and types are unknown. Identification of the compounds responsible for the TOC increase, their sources, and estimates of their loadings in the OGA as well as possible mitigation strategies are presented.
Document ID
20150016495
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Bowman, Elizabeth M. (Boeing Co. Huntsville, AL, United States)
Carpenter, Joyce (Hamilton Sundstrand Space Systems International, Inc. Windsor Locks, CT, United States)
Roy, Robert J. (Hamilton Sundstrand Space Systems International, Inc. Windsor Locks, CT, United States)
Van Keuren, Steve (Anadarko Industries Houston, TX, United States)
Wilson, Mark E. (Boeing Co. Houston, TX, United States)
Date Acquired
August 26, 2015
Publication Date
July 12, 2015
Subject Category
Man/System Technology And Life Support
Report/Patent Number
M15-4457
Meeting Information
Meeting: International Conference on Environmental Systems (ICES 2015)
Location: Bellevue, WA
Country: United States
Start Date: July 12, 2015
End Date: July 16, 2015
Sponsors: UTC Aerospace Systems, Texas Tech Univ., Paragon Space Development Corp.
Funding Number(s)
CONTRACT_GRANT: NAS15-10000
Distribution Limits
Public
Copyright
Public Use Permitted.

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