Removal of contaminant gases from an electrolytic urine pretreatment processThe effluent gas stream from an electrolytic urine pretreatment process was analyzed by gas chromatography-mass spectroscopy and wet chemical methods to determine its composition. The major constituents were identified as: hydrogen, carbon dioxide, oxygen, nitrogen, water vapor, and chlorine. The trace impurities were chlorinated light hydrocarbons, and a number of other organic impurities in the low ppm range. Several methods of removing all of the undesirable gases to levels acceptable for return to a space cabin atmosphere were investigated experimentally. A subsystem concept comprised of the following sequential unit processes and operations was successfully demonstrated: (1) raw urine scrubbing, (2) silica gel sorption, (3) dilution with cabin air, and (4) catalytic oxidation.
Document ID
19770064047
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Colombo, G. V. (Umpqua Research Co. Myrtle Creek, OR, United States)
Putnam, D. F. (Umpqua Research Co. Myrtle Creek, Ore., United States)
Date Acquired
August 9, 2013
Publication Date
July 1, 1977
Subject Category
Man/System Technology And Life Support
Report/Patent Number
ASME PAPER 77-ENAS-61
Meeting Information
Meeting: Intersociety Conference on Environmental Systems