Development of a Low-Power CO2 Removal and Compression System for Closed-Loop Air Revitalization in Future Spacecraft

Mulloth, Lila; Affleck, Dave L.; Rosen, Micha; Varghese, Mini; Knox, James C.; LeVan, M. Douglas; Moate, Joseph R.

doi:10.4271/2005-01-2944

Cited by 8 publications

(3 citation statements)

References 5 publications

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“…Specifically, breakthrough curves for CO 2 in dry nitrogen (synthetic air) at concentrations of c.a. 5300 and 2500 ppm are presented since those are the working parameters of the CDRA unit (12) and the under-development Low Power CO 2 Removal (LPCOR) system, respectively (13,24). CO 2 concentrations of 1000 ppm were also tested since it is in the low partial pressures that the Sr 2+ -SAPO-34 was shown to be significantly superior to the currently used 5A Zeolite.…”

Section: Removal Of Carbonmentioning

confidence: 99%

Removal of Carbon Dioxide from Light Gas Mixtures using a Porous Strontium(II) Silicoaluminophosphate Fixed Bed: Closed Volume and Portable Applications

García-Ricard

Arévalo-Hidalgo

et al. 2014

Separation Science and Technology

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A Sr 2+ -SAPO-34 bed was assembled to study CO 2 dynamic adsorption under conditions that emulate those found in closed volume and portable applications. Although the surface area was reduced by 7% during pelletization, adsorption capacities estimated from breakthrough curves compared well with static volumetric adsorption data. Modeling of the breakthrough adsorption was achieved using a Linear Driving Force mass transfer rate model, showing good agreement with the experimental data and confirming fast kinetics and efficient use of the bed. Fast kinetics were also evidenced by the length of the unused section of the bed as calculated from a Mass Transfer Zone model. Adsorption capacity degradation was not observed after multiple regeneration cycles. Apparent and equilibrium adsorption isotherm data estimated from the bed and static volumetric experiments at 25 C were compared to that of 5A Zeolite. These showed that Sr 2+ -SAPO-34 is a superior adsorbent for CO 2 removal in the low partial pressure range (<1500 ppm). CO 2 and H 2 O multicomponent adsorption breakthrough curves were also gathered for a CO 2 inlet concentration of 1000 ppm and dew points of −5 and 8 C. The addition of moisture resulted in a decrease in total processed gas volume by 31 and 47%, respectively.

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Section: Removal Of Carbonmentioning

confidence: 99%

Removal of Carbon Dioxide from Light Gas Mixtures using a Porous Strontium(II) Silicoaluminophosphate Fixed Bed: Closed Volume and Portable Applications

García-Ricard

Arévalo-Hidalgo

et al. 2014

Separation Science and Technology

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“…After the humidity of cabin air is reduced by a membrane dryer, the dried air is introduced into an absorption canister 4,5 in which CO 2 is absorbed by zeolite and concentrated by a temperature gradient. It is necessary to calculate the amount of zeolite required per person per day, and we assume the removal of 4,000 ppm → 0 ppm of CO 2 as the most demanding case.…”

Section: A Co 2 Removalmentioning

confidence: 99%

Air Revitalization Demonstration on the JEM (KIBO) for a Manned Space Exploration

Sakurai

Shima

Sone

et al. 2013

43rd International Conference on Environmental Systems

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To further advance manned space exploration, a critical issue that must be addressed is recycling of resources, especially air revitalization and water reclamation. Japan is already a leader in terrestrial environmental technologies, and aims to apply this know-how to develop air and water recycling technologies for space applications. To support proposed post- ISS missions such as manned lunar or asteroid exploration and an Earth-Moon Lagrange point (EML1) space station, JAXA is developing an air revitalization system for an on-orbit demonstration on the International Space Station (ISS) early in the extended ISS operation period (2015-2020). The requirements for this technical demonstrator have been investigated and its specifications established. Regenerative life support functions include oxygen recovery from carbon dioxide using a combination of CO 2 reduction by a Sabatier process and O 2 generation by electrolysis. Each air and water re-vitalization subsystem is planned to be transported to the ISS separately by successive H-II Transfer Vehicle (HTV)launches in the sequence Water Reclamation → Water Electrolysis → CO 2 Reduction. This paper presents the air re-vitalization system developed by JAXA, and gives details of water electrolysis in microgravity.

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“…A low-power CO 2 removal (LPCOR) system is being developed at NASA Ames Research Center [1] (ARC) to perform the CO 2 removal and recovery functions. The primary objective of the study presented in this paper is to investigate the synergy between LPCOR and the CO 2 and steam coelectrolysis process that was developed at the Idaho National Laboratory (INL).…”

Section: Introductionmentioning

confidence: 99%

The Concept and Analytical Investigation of CO2 and Steam Co-Electrolysis for Resource Utilization in Space Exploration

McKellar

Stoots

Sohal

et al. 2010

40th International Conference on Environmental Systems

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CO 2 acquisition and utilization technologies will have a vital role in designing sustainable and affordable life support and in situ fuel production architectures for human and robotic exploration of Moon and Mars. For long-term human exploration to be practical, reliable technologies have to be implemented to capture the metabolic CO 2 from the cabin air and chemically reduce it to recover oxygen. Technologies that enable the in situ capture and conversion of atmospheric CO 2 to fuel are essential for a viable human mission to Mars. This paper describes the concept and mathematical analysis of a closed-loop life support system based on combined electrolysis of CO 2 and steam (co-electrolysis). Products of the coelectrolysis process include oxygen and syngas (CO and H 2 ) that are suitable for life support and synthetic fuel production, respectively. The model was developed based on the performance of a co-electrolysis system developed at Idaho National Laboratory (INL). Individual and combined process models of the co-electrolysis and Sabatier, Bosch, Boudouard, and hydrogenation reactions are discussed and their performance analyses in terms of oxygen production and CO 2 utilization are presented. Nomenclature ARC = Ames Research Center

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Development of a Low-Power CO2 Removal and Compression System for Closed-Loop Air Revitalization in Future Spacecraft

Cited by 8 publications

References 5 publications

Removal of Carbon Dioxide from Light Gas Mixtures using a Porous Strontium(II) Silicoaluminophosphate Fixed Bed: Closed Volume and Portable Applications

Removal of Carbon Dioxide from Light Gas Mixtures using a Porous Strontium(II) Silicoaluminophosphate Fixed Bed: Closed Volume and Portable Applications

Air Revitalization Demonstration on the JEM (KIBO) for a Manned Space Exploration

The Concept and Analytical Investigation of CO2 and Steam Co-Electrolysis for Resource Utilization in Space Exploration

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