Mars Atmospheric In Situ Resource Utilization Projects at the Kennedy Space Center

Muscatello, Anthony C.; Hintze, Paul E.; Meier, Anne; Bayliss, J.; Karr, Laurel J.; Paley, Steve; Marone, M.; Gibson, Tracy; Surma, Jan M.; Mansell, Matt; Lunn, Griffin M.; DeVor, Robert; Berggren, Mark

doi:10.1061/9780784479971.043

Cited by 5 publications

(2 citation statements)

References 2 publications

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“…Pressurized, N2-enriched air may indeed be a byproduct of CO2 purification or conversion processes (envisioned for, e.g., propellant, polymer or O2 production) 36,37 . With technologies which areor have beenunder consideration [38][39][40] , enrichment would not lead to N2 concentrations as high as considered here. If the aim is to reach the values presented in Figure 3, further purification should therefore be performed specifically for the needs of cyanobacterium cultivation.…”

Section: Minimum Total Pressure Required To Support the Photoautotrop...mentioning

confidence: 99%

“…Reducing atmosphere processing requirements Samples from the Martian atmosphere must be processed before they can be used as carbon and nitrogen sources: the total pressure and pN2, at least, must be increased. Technologies enabling such processes on Earth are well-proven 43 , and others are under development for gas pressurization and separation on Mars 36,39 . However, gas processing is resource intensive.…”

Section: Minimum Total Pressure Required To Support the Photoautotrop...mentioning

confidence: 99%

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Effects of atmospheric pressure, and of the partial pressures of CO2 and N2, on the growth rates of Anabaena sp. PCC 7938: Assessment and implications for cyanobacterium cultivation on Mars

Verseux,

Ramalho,

Bohuon

et al. 2024

Preprint

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In situ resource utilization systems based on cyanobacteria could support the sustainability of crewed missions to Mars. However, their resource-efficiency will depend on the extent to which gases from the Martian atmosphere must be processed to support cyanobacterial growth. The main purpose of the present work is to help assess this extent. We therefore start with investigating the impact of changes in atmospheric conditions on the photoautotrophic, diazotrophic growth of the cyanobacterium Anabaena sp. PCC 7938. We show that lowering atmospheric pressure from 1 bar down to 80 hPa, without changing the partial pressures of metabolizable gases, does not reduce growth rates. We also provide equations, analogous to Monod’s, that describe the dependence of growth rates on the partial pressures of CO2 and N2. We then outline the relationships between atmospheric pressure and composition, the minimal mass of a photobioreactor’s outer walls (which is dependent on the inner-outer pressure difference), and growth rates. Relying on these relationships, we demonstrate that the structural mass of a photobioreactor can be decreased – without affecting cyanobacterial productivity – by reducing the inner gas pressure. We argue, however, that this reduction would be small next to the equivalent system mass of the cultivation system. A greater impact on resource-efficiency could come from the selection of atmospheric conditions which minimize gas processing requirements while adequately supporting cyanobacterial growth. The data and equations we provide can help identify these conditions.

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Section: Minimum Total Pressure Required To Support the Photoautotrop...mentioning

confidence: 99%

Section: Minimum Total Pressure Required To Support the Photoautotrop...mentioning

confidence: 99%

Effects of atmospheric pressure, and of the partial pressures of CO2 and N2, on the growth rates of Anabaena sp. PCC 7938: Assessment and implications for cyanobacterium cultivation on Mars

Verseux,

Ramalho,

Bohuon

et al. 2024

Preprint

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CO₂ Conversion Performance of Perovskite Oxides Designed with Abundant Metals

Hare

Maiti

Meier

et al. 2019

Ind. Eng. Chem. Res.

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With improved technology, CO 2 could be the feedstock for production of renewable fuels. The reverse water−gas shift chemical looping (RWGS-CL) process performs at lower temperatures and higher energy efficiencies than rival methods. Ideal materials must endure reaction conditions, exhibit high activity, and be synthesized from readily available elements. Design and characterization of La x Ca 1−x Fe y Mn 1−y O 3 perovskite-type oxides resulted in higher CO yields and peak formation rates than previously witnessed in RWGS-CL. Extents of Ca-/Fe-doping presented strong effects on lattice stability (XRD), conversion temperatures, and CO formation (TPO-CO 2 ). Samples calcined at higher temperatures exhibited greater stability and activity but higher conversion temperatures. Vacancy formation energies (DFT) decreased significantly and slightly with increasing Ca and Fe content, respectively, to reflect experimental findings. Surface allocation of metals suggests Fe is redistributed to the surface (XPS) for intensified CO 2 conversion with Mn-rich bulk for enhanced oxygen storage capacity and intralattice diffusion.

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Full-Scale CO₂Freezer Project Developments for Mars Atmospheric Acquisition

Meier

Grashik

Shah

et al. 2018

2018 AIAA SPACE and Astronautics Forum and Exposition

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Mars Atmospheric In Situ Resource Utilization Projects at the Kennedy Space Center

Cited by 5 publications

References 2 publications

Effects of atmospheric pressure, and of the partial pressures of CO2 and N2, on the growth rates of Anabaena sp. PCC 7938: Assessment and implications for cyanobacterium cultivation on Mars

Effects of atmospheric pressure, and of the partial pressures of CO2 and N2, on the growth rates of Anabaena sp. PCC 7938: Assessment and implications for cyanobacterium cultivation on Mars

CO₂ Conversion Performance of Perovskite Oxides Designed with Abundant Metals

Full-Scale CO₂Freezer Project Developments for Mars Atmospheric Acquisition

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Mars Atmospheric In Situ Resource Utilization Projects at the Kennedy Space Center

Cited by 5 publications

References 2 publications

Effects of atmospheric pressure, and of the partial pressures of CO2 and N2, on the growth rates of Anabaena sp. PCC 7938: Assessment and implications for cyanobacterium cultivation on Mars

Effects of atmospheric pressure, and of the partial pressures of CO2 and N2, on the growth rates of Anabaena sp. PCC 7938: Assessment and implications for cyanobacterium cultivation on Mars

CO2 Conversion Performance of Perovskite Oxides Designed with Abundant Metals

Full-Scale CO2Freezer Project Developments for Mars Atmospheric Acquisition

Contact Info

Product

Resources

About

CO₂ Conversion Performance of Perovskite Oxides Designed with Abundant Metals

Full-Scale CO₂Freezer Project Developments for Mars Atmospheric Acquisition