Artikel: Development of a gravity-independent wastewater bioprocessor for advanced life support in space.
Water environment research : a research publication of the Water Environment Federation
2005 Band 77, Heft 2, Seite(n) 138–145
Abstract: Operation of aerobic biological reactors in space is controlled by a number of challenging constraints, mainly stemming from mass transfer limitations and phase separation. Immobilized-cell packed-bed bioreactors, specially designed to function in the ... ...
Abstract | Operation of aerobic biological reactors in space is controlled by a number of challenging constraints, mainly stemming from mass transfer limitations and phase separation. Immobilized-cell packed-bed bioreactors, specially designed to function in the absence of gravity, offer a viable solution for the treatment of gray water generated in space stations and spacecrafts. A novel gravity-independent wastewater biological processor, capable of carbon oxidation and nitrification of high-strength aqueous waste streams, is presented. The system, consisting of a fully saturated pressurized packed bed and a membrane oxygenation module attached to an external recirculation loop, operated continuously for over one year. The system attained high carbon oxidation efficiencies often exceeding 90% and ammonia oxidation reaching approximately 60%. The oxygen supply module relies on hydrophobic, nonporous, oxygen selective membranes, in a shell and tube configuration, for transferring oxygen to the packed bed, while keeping the gaseous and liquid phases separated. This reactor configuration and operating mode render the system gravity-independent and suitable for space applications. |
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Mesh-Begriff(e) | Bacteria, Aerobic/metabolism ; Bioreactors ; Calcium Carbonate ; Carbon/metabolism ; Equipment Design ; Gravitation ; Life Support Systems ; Nitrogen/metabolism ; Oxygen/metabolism ; Polyethylene Terephthalates ; Sewage ; Space Flight ; Space Simulation ; Waste Disposal, Fluid/instrumentation ; Waste Disposal, Fluid/methods |
Chemische Substanzen | Polyethylene Terephthalates ; Sewage ; Carbon (7440-44-0) ; Calcium Carbonate (H0G9379FGK) ; Nitrogen (N762921K75) ; Oxygen (S88TT14065) |
Sprache | Englisch |
Erscheinungsdatum | 2005-02-02 |
Erscheinungsland | United States |
Dokumenttyp | Journal Article ; Research Support, U.S. Gov't, Non-P.H.S. |
ZDB-ID | 1098976-6 |
ISSN | 1554-7531 ; 1061-4303 ; 1047-7624 |
ISSN (online) | 1554-7531 |
ISSN | 1061-4303 ; 1047-7624 |
DOI | 10.2175/106143005x41708 |
Datenquelle | MEDical Literature Analysis and Retrieval System OnLINE |
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