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Compact and Efficient Membraneless Water Purification

Award Information
Agency: Department of Defense
Branch: Army
Contract: W911NF-19-P-0019
Agency Tracking Number: A18B-005-0067
Amount: $149,998.64
Phase: Phase I
Program: STTR
Solicitation Topic Code: A18B-T005
Solicitation Number: 18.B
Solicitation Year: 2018
Award Year: 2019
Award Start Date (Proposal Award Date): 2018-12-12
Award End Date (Contract End Date): 2019-12-06
Small Business Information
2501 Earl Rudder Freeway South
College Station, TX 77845
United States
DUNS: 184758308
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Ashwin Balasubramanian
 Director of Engineering
 (979) 764-2200
Business Contact
 Shawn Rhodes
Phone: (979) 764-2211
Research Institution
 Southern Methodist University
 Ms. Ruth V. Lozano Ms. Ruth V. Lozano
PO Box 750240
Dallas, TX 75275
United States

 (214) 768-4708
 Nonprofit College or University

Local water production for troops using standard membrane filtration processes presents a significant logistics burden because of high energy consumption for removing particles based on size-exclusion methods and the constant need to replace fouled membranes. A membraneless filtration method using dissolved CO2 has been demonstrated to separate charged particles through the mechanism of diffusiophoresis. This novel and ultra-low-power technology requires multiple orders of magnitude less pumping energy than standard membrane processes, per unit of water produced, but requires scale up of 50,000 from the 10-channel experiments reported in literature. The filter must also be implemented in a complete, energy efficient system and tested in real-world conditions. Lynntech will investigate scale-up design alternatives, including spiral-wound and stack-based approaches. Additionally, energy efficiency of the complete system is critical, so atmospheric CO2 capture and management methods will be examined for minimizing total system power consumption. A 1000x scale-up prototype is planned for Phase I with the goal of producing ~1 L/day from a filtration cell. Phase II will scale up via duplication of the cellular unit for a minimum 25 L/day production, as required for the individual soldier, and package the filter unit into a complete, standalone prototype system.

* Information listed above is at the time of submission. *

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