NASA STTR 2020-I Solicitation

Proposal Summary

 20-1- T6.06-5500
 Spacecraft Water Sustainability through Nanotechnology
 High Capacity Sorbents for Removal of Problematic Contaminants from Processed Wastewater
TDA Research, Inc.
12345 West 52nd Avenue
Wheat Ridge CO  80033 - 1916
Phone: (303) 422-7819
University of Puerto Rico
P.O. Box 9046
PR  00681 - 9046
Phone: (787) 832-4040

Principal Investigator (Name, E-mail, Mail Address, City/State/Zip, Phone)

Dr. Ambalavanan Jayaraman Ph.D.
12345 West 52nd Avenue Wheat Ridge, CO 80033 - 1916
(303) 940-5391

Business Official (Name, E-mail, Mail Address, City/State/Zip, Phone)

Mr. John D. Wright
12345 West 52nd Avenue Wheat Ridge, CO 80033 - 1916
(303) 940-2347
Estimated Technology Readiness Level (TRL) :
Begin: 2
End: 4
Technical Abstract (Limit 2000 characters, approximately 200 words)

Water recovery from wastewater sources is a key to long duration human exploration missions.  Regenerative systems are utilized on the International Space Station (ISS) to recycle water from humidity condensate and urine. However, two organic compounds, dimethylsilanediol (DMSD) and dimethyl sulfone (DMSO2), are problematic to water processor assembly (WPA) in the ISS. DMSD is a silicon-containing degradation byproduct from siloxane-based compounds. It can contaminate ISS potable water quality standards over time, requiring premature multi-filtration (MF) bed replacement. DMSO2 is a sulfur-containing metabolic byproduct that accumulates in the oxygen generation assembly’s (OGA) water recirculation loop and ends up in the hydrogen product stream, and slowly poisons the Sabatier catalyst over time by sulfur exposure. Hence, there is a need to develop high capacity sorbents that remove these contaminants while being compatible with the ISS WPA. This will benefit both current manned and future exploration missions.


In this proposed STTR project TDA Research in collaboration with the University of Puerto Rico Mayaguez (UPRM), will develop highly efficient nanoporous sorbents to remove DMSD and DMSO2 removal from processed waste water from the WPA. These sorbent beds will be sized and integrated with the MF beds and replaced under regular maintenance schedules. In Phase I we will optimize the sorbent’s formulations to increase their capacity for DMSD and DMSO2 adsorption. We will then complete the initial scale-up of the sorbent to increase the preparation batch size by 2-5x and demonstrate DMSD and DMSO2 removal under representative conditions in a fixed bed adsorption process, elevating the TRL to 4. In Phase II, we will further scale-up the sorbent production and build a high fidelity prototype assembly, and demonstrate the sorbent beds under conditions representative of the MF beds in the WPA, elevating the TRL to 6.

Potential NASA Applications (Limit 1500 characters, approximately 150 words)

Potential NASA applications include control of recalcitrant problem contaminants such as DMSD and DMSO2 in the water processor assembly and increase the life of the multi-filtration bed by increasing its selectivity and capacity for these contaminants. Our sorbents will also protect the catalysts used in the oxygen generation assembly (OGA) and the Sabatier Reactor. 

Potential Non-NASA Applications (Limit 1500 characters, approximately 150 words)

Potential commercial applications include removal of siloxanes, silanediols and sulfones from municipal wastewater treatment plants, and purification of the biogas generated from them. Common healthcare and biomedical products, and various industrial processes contain siloxanes that are bio-accumulative and toxic contaminants and are introduced to wastewater.

Duration: 13

Form Generated on 06/29/2020 21:15:31