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  • 1
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    Results of the Alternative Water Processor Test, A Novel Technology for Exploration Wastewater Remediation (2016)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Biologically-based water recovery systems are a regenerative, low energy alternative to physiochemical processes to reclaim water from wastewater. This report summarizes the results of the Alternative Water Processor (AWP) Integrated Test, conducted from June 2013 until April 2014. The system was comprised of four (4) membrane aerated bioreactors (MABRs) to remove carbon and nitrogen from an exploration mission wastewater and a coupled forward and reverse osmosis system to remove large organic and inorganic salts from the biological system effluent. The system exceeded the overall objectives of the test by recovering 90% of the influent wastewater processed into a near potable state and a 64% reduction of consumables from the current state of the art water recovery system on the International Space Station (ISS). However, the biological system fell short of its test goals, failing to remove 75% and 90% of the influent ammonium and organic carbon, respectively. Despite not meeting its test goals, the BWP demonstrated the feasibility of an attached-growth biological system for simultaneous nitrification and denitrification, an innovative, volume- and consumable-saving design that does not require toxic pretreatment.
    Keywords: Man/System Technology and Life Support
    Type: ICES-2016-57 , JSC-CN-35746 , International Conference on Environmental Systems; Jul 10, 2016 - Jul 14, 2016; Vienna; Austria
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Solar Coronal Jets: Observations, Theory, and Modeling (2016)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Chromospheric and coronal jets represent important manifestations of ubiquitous solar transients, which may be the source of signicant mass and energy input to the upper solar atmosphere and the solar wind. While the energy involved in a jet-like event is smaller than that of nominal solar ares and Coronal Mass Ejections (CMEs), jets share many common properties with these major phenomena, in particular, the explosive magnetically driven dynamics. Studies of jets could, therefore, provide critical insight for understanding the larger, more complex drivers of the solar activity. On the other side of the size-spectrum, the study of jets could also supply important clues on the physics of transients closeor at the limit of the current spatial resolution such as spicules. Furthermore, jet phenomena may hint to basic process for heating the corona and accelerating the solar wind; consequently their study gives us the opportunity to attack a broadrange of solar-heliospheric problems.
    Keywords: Solar Physics
    Type: GSFC-E-DAA-TN41385 , Space Science Reviews (ISSN 0038-6308) (e-ISSN 1572-9672); 201; 1; 1-53
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 3
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    Solar Coronal Jets: Observations, Theory, and Modeling (2016)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Coronal jets represent important manifestations of ubiquitous solar transients, which may be the source of significant mass and energy input to the upper solar atmosphere and the solar wind. While the energy involved in a jet-like event is smaller than that of "nominal" solar flares and coronal mass ejections (CMEs), jets share many common properties with these phenomena, in particular, the explosive magnetically driven dynamics. Studies of jets could, therefore, provide critical insight for understanding the larger, more complex drivers of the solar activity. On the other side of the size-spectrum, the study of jets could also supply important clues on the physics of transients close or at the limit of the current spatial resolution such as spicules. Furthermore, jet phenomena may hint to basic process for heating the corona and accelerating the solar wind; consequently their study gives us the opportunity to attack a broad range of solar-heliospheric problems.
    Keywords: Solar Physics
    Type: GSFC-E-DAA-TN41210 , Space Science Reviews (ISSN 0038-6308) (e-ISSN 1572-9672); 201; 1; 1-53
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Results of the Alternative Water Processor Test, A Novel Technology for Exploration Wastewater Remediation (2016)
    In:  CASI
    Details
    Publication Date: 2019-07-19
    Description: Biologically-based water recovery systems are a regenerative, low energy alternative to physiochemical processes to reclaim water from wastewater. This paper summarizes the results of the Alternative Water Processor (AWP) test conducted over one year. The AWP recovered 90% of water from four crewmembers using (4) membrane aerated bioreactors (MABRs) to remove carbon and nitrogen from an exploration mission wastewater, including urine, hygiene, laundry and humidity condensate. Downstream, a coupled forward and reverse osmosis system removed large organics and inorganic salts from the biological system effluent. The system exceeded the overall objectives of the test by recovering 90% of the influent wastewater processed and a 29% reduction of consumables from the current state of the art water recovery system on the International Space Station (ISS). However the biological system fell short of its test goals, failing to remove 75% and 90% of the influent ammonium and organic carbon, respectively. Despite not meeting its test goals, the BWP demonstrated the feasibility of an attached-growth biological system for simultaneous nitrification and denitrification, an innovative, volume and consumable-saving design that doesn't require toxic pretreatment. This paper will explain the reasons for this and will discuss steps to optimize each subsystem to increase effluent quality from the MABRs and the FOST to advance the system.
    Keywords: Man/System Technology and Life Support
    Type: JSC-CN-32307 , International Conference on Environmental Systems; Jul 10, 2016 - Jul 14, 2016; Vienna; Austria
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
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