Paper on CO2 Dry Cleaning Method
The ability to clean clothes on long-term or permanent space missions
is a driving factor to
requirements. The article
Human Daily Needs and Effluents states that 27.50 lbm (12.50 kg) of
clothing wash water is required per person per day for space applications.
While much of this water can be recycled, removing detergents from
the water is a difficult filtration issue, and it is a significant mass
to carry to the moon, even if it can be recycled. Also, it is unlikely that
a near-term lunar base would recycle the detergents, creating another
A paper entitled
"Evaluation of the Utilization of Supercritical Fluid
Technology for Analytical, Process and Environmental Applications in
Textiles" poses an alternative to water-based cleaning by
a CO2-based dry cleaning process.
Copyright © 2007 Artemis Society International, for the
contributors. All rights reserved.
"Supercritical CO2 which generates no waste effluent
stream, is low cost
and totally recyclable, has already been demonstrated in the textile
industry as a process fluid for dyeing, scouring, bleaching and dry
cleaning. Additional applications might include applying finishes,
extrusion and specific extraction of components from solid waste streams
for recovery and recycling."
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