Developmental Hardware Testing Results and Forward Plans for the Spacecraft Water Impurity Monitor (SWIM) Organic Water Module (OWM)

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dc.creatorNeidholdt, Evan L.
dc.creatorPensinger, Stuart
dc.creatorCallahan, Michael
dc.creatorMadzunkov, Stojan
dc.creatorNikolic, Dragan
dc.creatorMalone, Charles
dc.creatorDarrach,Murray
dc.date.accessioned2024-06-23T21:26:35Z
dc.date.available2024-06-23T21:26:35Z
dc.date.issued2024-07-21
dc.descriptionEvan L.Neidholdt, KBR, USA
dc.descriptionStuart Pensinger, NASA Johnson Space Center(JSC), USA
dc.descriptionMichael Callahan, NASA Johnson Space Center(JSC), USA
dc.descriptionStojan Madzunkov, Jet Propulsion Laboratory, USA
dc.descriptionDragan Nikolic, Jet Propulsion Laboratory, USA
dc.descriptionCharles Malone, Jet Propulsion Laboratory, USA
dc.descriptionMurray Darrach, Jet Propulsion Laboratory, USA
dc.descriptionICES406: Spacecraft Water/Air Quality: Maintenance and Monitoring
dc.descriptionThe 53rd International Conference on Environmental Systems was held in Louisville, Kentucky, USA, on 21 July 2024 through 25 July 2024.
dc.description.abstractWe present testing results for developmental hardware of the Spacecraft Water Impurity Monitor (SWIM) Organic Water Module (OWM). SWIM-OWM will monitor spacecraft potable water and system water for trace organic contaminants. The system will detect and identify the specific organic chemical that makes up a given total organic carbon reading. We have built a first development unit (1DU) for SWIM-OWM, which directly injects aqueous water samples and detects chemicals with both a thermal conductivity detector and mass spectrometer sensor. The gas chromatography mass spectrometer (GCMS) system that comprises SWIM-OWM draws on the success of ISS-proven mass spectrometer hardware, and the demonstration of GCMS detection of trace organic contaminants in ISS cabin air. SWIM-OWM benefits from the excellent sensitivity and specificity afforded by GCMS. We have demonstrated detection of a set of chemicals relevant to both crew health and performance as well as system monitoring; these target chemicals range from light, volatile organics such as acetone and ethanol, to heavier, very non-volatile compounds such as dimethyl sulfone and o-phthalaldehyde. Direct aqueous injection was chosen for the general applicability of the technique to clean water sampling and to preclude sample pre-processing, which facilitates an on-line implementation of the SWIM-OWM when deployed in a spacecraft or habitation module. A specific advantage of direct aqueous injection when coupled with appropriate methods is that both the light, volatile organics and heavier non-volatiles can be detected from a single injection, in a single chromatogram. Results from 1DU testing will be discussed, and forward plans will be outlined for continued maturation of SWIM-OWM with the goal of implementing a technology demonstration for the purposes of maturing the engineering design and operations in an environment relevant to NASA�s future goals of exploring and setting up habitation on the Moon and Mars.
dc.format.mimetypeapplication/pdf
dc.identifier.otherICES-2024-107
dc.identifier.urihttps://hdl.handle.net/2346/98817
dc.language.isoeng
dc.publisher2024 International Conference on Environmnetal Systems
dc.subjectwater monitoring
dc.subjectGCMS
dc.subjectwater quality
dc.subjectexploration
dc.titleDevelopmental Hardware Testing Results and Forward Plans for the Spacecraft Water Impurity Monitor (SWIM) Organic Water Module (OWM)
dc.typePresentations

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