Reliable and Efficient Electrochemical Recovery of O2 from Metabolic CO2 at the International Space Station (ISS)

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dc.creatorDominguez, Jesus A.
dc.creatorReidy, Lorlyn
dc.creatorNur, Mononita
dc.creatorCrawford, Kagen
dc.creatorBrown, Brittany
dc.creatorDennis,Brian
dc.creatorChanmanee, Wilaiwan
dc.creatorFillion,Joseph
dc.creatorOllenburg, Kathryn
dc.creatorMcCall, Shannon
dc.date.accessioned2024-06-23T22:18:32Z
dc.date.available2024-06-23T22:18:32Z
dc.date.issued2024-07-21
dc.descriptionJesus A. Dominguez, Insight Global/Jacobs Space Exploration Group (JSEG), USA
dc.descriptionLorlyn Reidy, NASA Marshall Space Flight Center, USA
dc.descriptionMononita Nur, NASA Marshall Space Flight Center, USA
dc.descriptionKagen Crawford, NASA Marshall Space Flight Center, USA
dc.descriptionBrittany Brown, NASA Marshall Space Flight Center, USA
dc.descriptionBrian Dennis, University of Texas at Arlington, USA
dc.descriptionWilaiwan Chanmanee, University of Texas at Arlington, USA
dc.descriptionJoseph Fillion, Jacobs Space Exploration Group (JSEG), USA
dc.descriptionKathryn Ollenburg, Jacobs Space Exploration Group (JSEG), USA
dc.descriptionShannon McCall, Qualis Corporation /Jacobs Space Exploration Group (JSEG), USA
dc.descriptionICES302: Physico-Chemical Life Support- Air Revitalization Systems -Technology and Process Development
dc.descriptionThe 53rd International Conference on Environmental Systems was held in Louisville, Kentucky, USA, on 21 July 2024 through 25 July 2024.
dc.description.abstractMaximum oxygen (O2) recovery from metabolic carbon dioxide (CO2) is desired for future long-duration missions beyond Low Earth Orbit. The O2 recovery for the Environmental Control and Life Support System (ECLSS) at the International Space Station (ISS), presently limited to 50% (Sabatier), must be highly reliable and efficient and recover a minimum of 75% O2 from metabolic CO2. An alternative technology development effort currently underway at NASA Marshall Space Flight Center via a Macro-fluidic Electrochemical Reactor (MFECR) approach has the potential to increase O2 recovery significantly and reduce the complexity of the ECLSS O2 recovery at the ISS as it would replace three pieces, the CO2 Reduction Assembly (CRA) (Sabatier reactor), the Oxygen Generation Assembly (OGA), and the Plasma Pyrolysis Assembly (PPA). The MFECR's electrochemical process generates ethylene (C2H4) and carbon monoxide (CO) instead of methane (CH4) (Sabatier) as a byproduct, eliminating the need for further dehydrogenation through the PPA. As in the OGA, the MFECR's electrochemical process generates O2 and hydrogen (H2) from the water electrolysis process. MSFC and the University of Texas in Arlington have jointly designed and fabricated/upgraded an MFECR's single cell that operates at ambient conditions and utilizes a catalyst highly selective on reducing CO2 to C2H4 and CO at the cathode. This approach is expected to substantially improve the ISS ECLSS sustainability and reduce power and weight requirements as the MFECR would replace three and potentially four units currently installed in the ISS. In this paper, the authors discuss the outcome of preliminary tests, the current development, the evaluation efforts on different alternatives for the cathode and the anode configurations, the use of MFECR's digital twin to upgrade its design at an engineering development unit (EDU) scale, and the evaluation efforts on different electrolyte alternatives and alkalinity effect.
dc.format.mimetypeapplication/pdf
dc.identifier.otherICES-2024-168
dc.identifier.urihttps://hdl.handle.net/2346/98863
dc.language.isoeng
dc.publisher2024 International Conference on Environmnetal Systems
dc.subjectEnvironmental Control and Life Support System (ECLSS).
dc.subjectInternational Space Station (ISS).
dc.subjectO2 recovery.
dc.subjectMetabolic CO2.
dc.subjectMicrofluidic Electrochemical Reactor (MFECR).
dc.titleReliable and Efficient Electrochemical Recovery of O2 from Metabolic CO2 at the International Space Station (ISS)
dc.typePresentations

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