Nonhazardous Urine Pretreatment Method for Future Exploration Systems, Phase I

Metadata Updated: May 2, 2019

A novel urine pretreatment that will prevent biological growth or chemical instabilities in urine without using hazardous chemicals is proposed. Untreated urine fosters biological growth, ammonia generation, creation of bio-solids, and inorganic precipitates, which foul water and air reclamation hardware. The current Russian system employs hexavalent chromium, a strong oxidant and carcinogen, and sulfuric acid to stabilize urine, while the American system utilizes potassium monopersulfate, another strong oxidant, sulfuric acid, and potassium benzoate. Urine stabilized in these respective manners requires triple and double containment, and chemical storage and handling become problematic due to the hazardous nature and low pH (1.3 -2.6) of these chemicals. These requirements significantly increase urine pretreatment ESM. The proposed pretreatment system consists of a simple flow-through Solid Phase Acid (SPA) bed containing sparingly soluble transition metal oxide particles for pH control, which combined with a soluble non-oxidizing biocide will provide long-term urine stabilization. This innovative system fulfills an unmet need for safe, efficient and automated urine pretreatment for current and future NASA missions. The Phase I effort will demonstrate the feasibility of this novel approach. The Phase II project will fully develop the process, including the design and testing of deliverable hardware for urine pretreatment.

Access & Use Information

Public: This dataset is intended for public access and use. License: U.S. Government Work

Downloads & Resources


Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_6230
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Datagov Dedupe Retained 20190501230127
Harvest Object Id 411e7271-830c-4ba9-8e5a-45a7bd83737d
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2008-07-01
Homepage URL
Data Last Modified 2018-07-19
Program Code 026:027
Source Datajson Identifier True
Source Hash 5a22f35f35b83adc4e99c954c21c00a09c255e5e
Source Schema Version 1.1

Didn't find what you're looking for? Suggest a dataset here.