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Extraction of urea and ammonium ionWater purification system keeps urea and ammonium ion concentration below toxic limits in recirculated water of closed loop aquatic habitat. Urea is first converted to ammonium ions and carbon dioxide by enzygmatic action. Ammonium ions are removed by ion exchange. Bioburden is controlled by filtration through 0.45 micron millipore filters.
Document ID
19760000515
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Anselmi, R. T.
(Martin Marietta Corp.)
Husted, R. R.
(Martin Marietta Corp.)
Schulz, J. R.
(Martin Marietta Corp.)
Date Acquired
August 8, 2013
Publication Date
March 1, 1977
Publication Information
Publication: NASA Tech Briefs
Volume: 1
Issue: 4
ISSN: 0145-319X
Subject Category
Materials
Report/Patent Number
ARC-11064
Accession Number
76B10515
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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