Update on Feasibility of UV LEDs in a Spacecraft Wastewater Tank Application

dc.creatorAdam, Niklas
dc.creatorCallahan, Michael
dc.creatorAlmengor, Audry
dc.creatorGilbert, Nikki
dc.creatorHarris, Jacob
dc.creatorJimenez, Javier
dc.creatorHanford, Anthony
dc.creatorToon, Katherine
dc.descriptionNiklas Adam, National Aeronautics and Space Administration (NASA), US
dc.descriptionMichael Callahan, National Aeronautics and Space Administration (NASA), US
dc.descriptionAudry Almengor, KBRwyle, US
dc.descriptionNikki Gilbert, KBRwyle, US
dc.descriptionJacob Harris, KBRwyle, US
dc.descriptionJavier Jimenez, KBRwyle, US
dc.descriptionAnthony Hanford, Jacobs Engineering, US
dc.descriptionKatherine Toon, National Aeronautics and Space Administration (NASA), US
dc.descriptionICES303: Physio-Chemical Life Support- Water Recovery & Management Systems- Technology and Process Development
dc.descriptionThe proceedings for the 2020 International Conference on Environmental Systems were published from July 31, 2020. The technical papers were not presented in person due to the inability to hold the event as scheduled in Lisbon, Portugal because of the COVID-19 global pandemic.en_US
dc.description.abstractAs the National Aeronautics and Space Administration (NASA) expands its scope and begins to venture into long-duration manned space flights, the function and maintenance of spacecraft water systems becomes increasingly critical and difficult to achieve. New mission requirements will limit opportunities for resupply and demand extended periods of dormancy during uncrewed operations. Based on lessons learned from the International Space Station (ISS), one particular challenge of future spacecraft water systems will be maintaining adequate microbial control, especially in water system and component-level elements where effective biocontrol strategies do not currently exist. To ensure the reliability and redundancy in these systems, new technologies will be needed in order to ensure mission success. One application specific microbial control technology under consideration is the use of ultra-violet (UV) light emitting diodes (LEDs). UV-LED technology may reduce the need for consumable resupply, such as filters or biocides, and may minimize crew time associated with the repair and refurbishment of exhausted and/or compromised components and/or systems. Having recently proved preliminary feasibility of commercial off the shelf (COTS) UV-LED devices in a number of spacecraft water system applications, this paper reports on the development of this technology for microbial control in the water processing assembly (WPA) wastewater tank application. The resulting data from this study will be are part of on going efforts to explore the use of UV-LED technology to increase the stability of water systems as deep space missions drive requirements toward more stringent needs for sterility and microbial control.
dc.publisher2020 International Conference on Environmental Systems
dc.subjectBiofilm control
dc.subjectLife support
dc.subjectUltraviolet light
dc.titleUpdate on Feasibility of UV LEDs in a Spacecraft Wastewater Tank Application


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