NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Adsorption of Ammonia on Regenerable Carbon SorbentsResults are presented on the development of reversible sorbents for the combined carbon dioxide, moisture, and trace-contaminant (TC) removal for use in Extravehicular Activities (EVAs), and more specifically in the Primary Life Support System (PLSS). The currently available life support systems use separate units for carbon dioxide, trace contaminants, and moisture control, and the long-term objective is to replace the above three modules with a single one. Data on sorption and desorption of ammonia, which is a major TC of concern, are presented in this paper. The current TC-control technology involves the use of a packed bed of acid-impregnated granular charcoal, which is non-regenerable, and the carbon-based sorbent under development in this project can be regenerated by exposure to vacuum at room temperature. In this study, several carbon sorbents were fabricated and tested for ammonia sorption. Ammonia-sorption capacity was related to carbon pore structure characteristics, and the temperature of oxidative carbon-surface treatment was optimized for enhanced ammonia-sorption performance.
Document ID
20150008167
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Wójtowicz, Marek A.
(Advanced Fuel Research, Inc. East Hartford, CT, United States)
Cosgrove, Jesph E.
(Advanced Fuel Research, Inc. East Hartford, CT, United States)
Serio, Michael A..
(Advanced Fuel Research, Inc. East Hartford, CT, United States)
Wilburn, Monique
(NASA Johnson Space Center Houston, TX, United States)
Date Acquired
May 15, 2015
Publication Date
July 12, 2015
Subject Category
Man/System Technology And Life Support
Report/Patent Number
JSC-CN-33342
ICES-2015-179
Meeting Information
Meeting: International Conference on Environmental Systems
Location: Bellevue, WA
Country: United States
Start Date: July 12, 2015
End Date: July 16, 2015
Sponsors: Texas Tech Univ.
Funding Number(s)
CONTRACT_GRANT: NNX14CJ09C
Distribution Limits
Public
Copyright
Public Use Permitted.
No Preview Available