Cleanser, Detergent, Personal Care Product, and Pretreatment Evaluation

The purpose of the Cleanser, Detergent, Personal Care Product, and Pretreatment Evaluation & Selection task is to identify the optimal combination of personal hygiene products, crew activities, and pretreatment strategies to provide the crew with sustainable life support practices and a comfortable habitat. Minimal energy, mass, and crew time inputs are desired to recycle wastewater during long duration missions. This document will provide a brief background on the work this past year supporting the ELS Distillation Comparison Test, issues regarding use of the hygiene products originally chosen for the test, methods and results used to select alternative products, and lessons learned from testing

Ion Exchange Technology Development in Support of the Urine Processor Assembly Precipitation Prevention Project for the International Space Station

In support of the Urine Processor Assembly Precipitation Prevention Project (UPA PPP), multiple technologies were explored to prevent CaSO4 dot 2H2O (gypsum) precipitation during the on-orbit distillation process. Gypsum precipitation currently limits the water recovery rate onboard the International Space Station (ISS) to 70% versus the planned 85% target water recovery rate. Due to its advanced performance in removing calcium cations in pretreated augmented urine (PTAU), ion exchange was selected as one of the technologies for further development by the PPP team. A total of 12 ion exchange resins were evaluated in various equilibrium and dynamic column tests with solutions of dissolved gypsum, urine ersatz, PTAU, and PTAU brine at 85% water recovery. While initial evaluations indicated that the Purolite SST60 resin had the highest calcium capacity in PTAU (0.30 meq/mL average), later tests showed that the Dowex G26 and Amberlite FPC12H resins had the highest capacity (0.5 meq/mL average). Further dynamic column testing proved that G26 performance is +/- 10% of that value at flow rates of 0.45 and 0.79 Lph under continuous flow, and 10.45 Lph under pulsed flow. Testing at the Marshall Spaceflight Center (MSFC) integrates the ion exchange technology with a UPA ground article under flight-like pulsed flow conditions with PTAU. To date, no gypsum precipitation has taken place in any of the initial evaluations

Abstracts from the 8th International Conference on cGMP Generators, Effectors and Therapeutic Implications

This work was supported by a restricted research grant of Bayer AG

[Photograph 2012.201.B1172.0033]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "While Christmas lights blink in the background, police investigate the fatal shooting of a woman in a busy shopping center Wednesday.

[Photograph 2012.201.B1160.0071]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "George Seetton clutches a Gremlin doll inside the Seeton apartment.

[Photograph 2012.201.B0137.0070]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Deputy Darrel Waggoner inspects control panel on Cleveland County's new $3.5 million jail.

[Photograph 2012.201.B0408B.0061]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "A stretcher stands near the front door at 2604 SE 50, where police killed a suspect in an Oklahoma City armed robbery.