Catalytic Oxidation Model Development of the Volatile Reactor Assembly Unit of the International Space Station Water Processor Michigan Technological Univ

Format:

Conference/Event

Author/Creator:

Kindt, Louis M., author.

Conference Name:

International Conference on Environmental Systems (1995-07-10 : San Diego, California, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1995

Summary:

The destruction of organic contaminants in waste water for closed systems, such as that of the International Space Station, is crucial due to the need for recycling the waste water. A cocurrent upflow bubble column using oxygen as the gas phase oxidant and packed with catalyst particles consisting of a noble metal on an alumina substrate is being developed for this process. This paper addresses the development of a plug-flow model that will predict the performance of this three phase reactor system in destroying a multicomponent mixture of organic contaminants in water. Mass balances on a series of contaminants and oxygen in both the liquid and gas phases are used to develop this model. These mass balances incorporate the gas-to-liquid and liquid-to-particle mass transfer coefficients, the catalyst effectiveness factor, and intrinsic reaction rate. To validate this model, a bench scale reactor has been tested at Michigan Technological University at elevated pressures (50-83 psig) and a temperature range of 200 to 290°F. Feeds consisting of five dilute solutions of ethanol (10 ppm), chlorobenzene (20 ppb), formaldehyde( 100 ppb), dimethyl sulfoxide (DMSO 300 ppb), and urea (20 ppm) in water were tested individually with an oxygen mass flow rate of 0.009 lb/h. The results from these individual tests were used to develop the kinetic parameter inputs necessary for the computer model. The computer simulated results are compared to the experimental data obtained for all 5 components run in a mixture on the differential test column for a range of reactor contact times

Notes:

Vendor supplied data

Publisher Number:

951630

Access Restriction:

Restricted for use by site license