Water Recovery from Human Metabolic Waste: System Design, Analysis, and Preliminary Results

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dc.creatorBoyce, Stephanie
dc.creatorHuff, Benjamin
dc.creatorJordan, Neil
dc.creatorSheets, Kyle
dc.creatorLofton, Zachary
dc.creatorStokke, Kristy
dc.creatorRichardson, Tra-My Justine
dc.date.accessioned2021-06-24T22:15:53Z
dc.date.available2021-06-24T22:15:53Z
dc.date.issued7/12/2021
dc.descriptionStephanie Boyce, Paragon Space Development Corporation
dc.descriptionBenjamin Huff, Paragon Space Development Corporation
dc.descriptionNeil Jordan, Paragon Space Development Corporation
dc.descriptionKyle Sheets, Paragon Space Development Corporation
dc.descriptionZachary Lofton, Paragon Space Development Corporation
dc.descriptionKristy Stokke, Paragon Space Development Corporation
dc.descriptionTra-My Justine Richardson, NASA Ames Research Center
dc.descriptionICES304: Physio-Chemical Life Support- Waste Management Systems- Technology and Process Developmenten
dc.descriptionThe 50th International Conference on Environmental Systems was held virtually on 12 July 2021 through 14 July 2021.en_US
dc.description.abstractParagon Space Development Corporation is developing a system to recover water from human metabolic waste, i.e. feces, in support of NASA's Water Recovery Technology Roadmap. Through a NASA Phase II Small Business Innovation Research (SBIR) award, the Separation Technology of On-Orbit Liquid and Excrement (STOOLE) system uses heated air to drive recoverable water off of fecal deposits through gas permeable bags. Drying and stabilization of feces can reduce odor generation and prevent microbial proliferation if the water activity level is less than 0.6. In use on a spacecraft, water vapor would be returned to cabin air through a series of filtration and ionomer membrane distillation steps and collected by the existing condensing heat exchangers. The system is designed to recover >80% of the available water content, with built-in modularity to facilitate compatibility with existing waste collection hardware (i.e. the Universal Waste Management System (UWMS)). The cost for recovering fecal water in terms of mass, power, volume, and crew time equivalents must not outweigh the benefits of the mass savings obtained from water recovery over the balance of a mission, for example. This paper will discuss the progress to date on system design and analysis, materials selection, fecal simulant development, and system component testing.en_US
dc.format.mimetypeapplication/pdf
dc.identifier.otherICES-2021-460
dc.identifier.urihttps://hdl.handle.net/2346/87321
dc.language.isoengen_US
dc.publisher50th International Conference on Environmental Systemsen_US
dc.subjectwater recovery
dc.subjecthuman metabolic waste
dc.subjectsystem design
dc.subjectsystem analysis
dc.subjectdewatering
dc.subjectionomer membrane
dc.titleWater Recovery from Human Metabolic Waste: System Design, Analysis, and Preliminary Resultsen_US
dc.typePresentationen_US

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