Evaluation of conditions necessary for successful bioprocessing of gray water in a microgravity environment

Urban, James E.; Supra, Laura; MacKnight, Allen
January 2000
AIP Conference Proceedings;2000, Vol. 504 Issue 1, p540
Academic Journal
A unique combination of researchers are investigating biological and engineering aspects of a biological wastewater treatment system which could effectively function to treat gray water in a microgravity environment such as that on the International Space Station and human-occupied interplanetary spacecraft. As part of the effort, 23 bacterial strains have been isolated from a bioprocessor operating at unit gravity and various strain combinations have been tested in microgravity for survivability and reduction of total organic carbon in ersatz gray water. All tested strains survive equally well in microgravity and unit gravity and each is capable of reducing TOC in microgravity. While the results reported are encouraging, they also reveal that current testing procedures and equipment are inadequate for fully evaluating bioprocessing in microgravity. © 2000 American Institute of Physics.


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