Poster presentation looking at water extraction from urine. Part of Project 1 - Solid Thermophilic Aerobic Reactor (STAR). One presentation in "EAC Presentation 2004" entry.




Resource recovery is one of the most crucial aspects of long-term survival in interplanetary space travel, and a key aspect of resource recovery lies in urine processing for a potable source of water. Currently, there is a need for an independent, energetically efficient process that achieves a high efficiency of water recovery without a high degree of cleaning problems. Through research initiatives, LiFT technology has taken several forms in the freeze-thaw and in the sublimation regime. While both sides have their own advantages and disadvantages, the former has proven itself as a more efficient process technology. A freeze-thaw technique known as freeze concentration seems to be the optimal method for water extraction from urine. Freeze concentration is a low energy process that focuses on the nucleation of pure ice crystals followed by a ripening effect of those crystals and subsequent washing to achieve high extraction efficiencies. A theoretical water recovery value of approximately 90% has been determined based on the eutectic points of urine constituents. This research effort will focus on four aspects of freeze concentration as follows: Detailed evaluation of inorganic contaminant migration to product ice/water; Detailed evaluation of organic contaminant migration to product ice/water; Detailed evaluation of possible biological contaminant migration to product ice/water; Detailed evaluation of biocidal impacts during freeze concentration

1 slide

Related Documents:WM1, WM2, WM3, WM8

Document Provided By:

Dave Kotterman

Project Lead

James E. Alleman

Date of this Version

November 2004

ALS NSCORT Project Number

Project 1 - Solid Thermophilic Aerobic Reactor (STAR)


.pdf version 1.4 (Acrobat 5.x)



Project Administrator

David Kotterman;


Internal Documents: Management: External Advisory




Copyright 2004, ALS-NSCORT. All Rights Reserved.


This item is password protected and only available to authorized individuals. To inquire about authorization please contact the project administrator.