A Two-Stage Regenerable Filter for Collection and Disposal of Carbon Fines



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51st International Conference on Environmental Systems


NASA is investigating the use of the Plasma Pyrolysis Assembly (PPA), which is a methane post-processing technology with the goal to recover hydrogen from the Carbon dioxide Reduction Assembly (CRA) currently onboard the International Space Station (ISS). The PPA can theoretically recover 75% of hydrogen from methane produced by the CRA. During methane processing the PPA creates roughly 40 mg/hr of carbon dust when operating at 4 crew member levels. The unwanted fines need to be removed from the stream to prevent any clogging of downstream components. The Regenerable Carbon Filter (RCF) was designed by Umpqua Research Company to address the carbon particulate created in the PPA. The RCF includes two stages. The first is an electrostatic precipitator designed to collect ultrafine particles. The second is a low pressure drop physical filter. Both filters are made of heat tolerant materials to allow regeneration of the filtration capacity by O2 oxidation of captured carbon. This paper will discuss the RCF hardware and test plans.


Gordon Berger, USRA, US
Juan Agui, NASA, US
Cara Black, NASA, US
Jeff Mehan, Jacobs, US
John Holtsnider, Umpqua Research Company, US
Bryan McCurry, Umpqua Research Company, US
ICES302: Physio-chemical Life Support- Air Revitalization Systems -Technology and Process Development
The 51st International Conference on Environmental Systems was held in Saint Paul, Minnesota, US, on 10 July 2022 through 14 July 2022.


PPA, Carbon, Filtration, Regenerable, Filter, Life Support