Effect of Particle Size on Adsorptive Capacity in Granular Activated Carbon Sorbents

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50th International Conference on Environmental Systems

Candidate sorbents for air revitalization aboard the International Space Station (ISS) include impregnated activated carbons for NH3 removal and activated carbons for trace contaminant removal. A rapid method for determining the adsorptive capacities of these sorbents uses small particle size (~12x20 mesh) to allow breakthrough curves to be determined in 8-12 hours, as opposed to 3-4 days for conventional 4x8 particles. In this study, the effect of particle size on the measurement of adsorptive capacity measurements is determined by comparing capacities obtained using crushed vs uncrushed sorbents exposed to the same simulated spacecraft gas streams. The effect of particle size was studied using activated carbons and acid impregnated activated carbons.

Joshua Finn, NASA
Oscar Monje, ESC / Air Revitalization Lab
Matthew Kayatin, NASA
Jay Perry, NASA
ICES302: Physio-chemical Life Support- Air Revitalization Systems -Technology and Process Development
The 50th International Conference on Environmental Systems was held virtually on 12 July 2021 through 14 July 2021.
air revitalization, activated carbon, particle size