Catalytic Oxidation of Semi-Volatile Aqueos Phase Compounds by the ISS Water Processor 961514

The ability to remove semi-volatile organic compounds such as alcohol from waste water streams has challenged the design of the International Space Station (ISS) water processor. The current ISS water processor utilizes an aqueous phase catalytic oxidation system to convert these organic compounds to their corresponding organic acids, and to some extent carbon dioxide, which are then easily removed via ion exchange resin. This oxidation system also provides a microbiological control function within the water processor. This paper summarizes testing conducted utilizing both simulated and real waste water on a development catalytic oxidizer. In addition, information is presented on the system schematic and reactor configuration planned for the upcoming Volatile Removal Apparatus flight experiment scheduled for STS 84 to be flown in May 1997.


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