An Automated Test Bed for Rapid Characterization of Sorbent Materials for Siloxane Removal in Contaminated Airstreams
| dc.creator | Richards, Jeffrey | |
| dc.creator | Koss, Lawrence | |
| dc.creator | Monje, Oscar | |
| dc.date.accessioned | 2015-10-29T17:11:38Z | |
| dc.date.available | 2015-10-29T17:11:38Z | |
| dc.date.issued | 2015-07-12 | |
| dc.description | Bellevue, Washington | |
| dc.description | Jeffrey Richards, Vencore/SGT, ESC Contract, Kennedy Space Center, USA | |
| dc.description | Lawrence Koss, Vencore/EASI, ESC Contract, Kennedy Space Center, USA | |
| dc.description | Oscar Monje, Vencore/EASI, ESC Contract, Kennedy Space Center, USA | |
| dc.description | The 45th International Conference on Environmental Systems was held in Bellevue, Washington, USA on 12 July 2015 through 16 July 2015. | |
| dc.description.abstract | Polydimethylsiloxanes (PDMS) degrade into dimethylsilanediol (DMSD), a soluble compound that affects the performance of several life support systems on the International Space Station (ISS). In industry, PDMS are typically removed using gas purification equipment using commercial sorbents. A bench scale test bed was developed at KSC for evaluating candidate commercial sorbents for the removal of gas phase PDMS using environmental conditions found on ISS (i.e., RH 40% and 23 oC). The test bed consists of four subsystems: 1) a Kin-Tek gas generator to supply a humid gas stream with the desired concentration of siloxanes and volatile organic compounds (VOCs); 2) a sorbent assay tube containing sorbent materials during testing; 3) an environmental monitoring and control system consisting of valves, a heater, and temperature, humidity, and pressure sensors; and 4) an automated gas analysis system to measure pre- and post-sorbent siloxane concentrations using a gas chromatograph and Valco sampling valves. The adsorptive capacity of Chemsorb® 1000, an activated carbon sorbent derived from coconut shell char, for PDMS was tested in this system. The sorbent was challenged with a linear (L2, Hexamethyldisiloxane) and a cyclic (D3, Hexamethylcyclotrisiloxane) siloxane under ISS nominal conditions and adsorptive capacities were determined from breakthrough curves. | en_US |
| dc.format.mimetype | application/pdf | |
| dc.identifier.other | ICES-2015-298 | |
| dc.identifier.uri | http://hdl.handle.net/2346/64534 | |
| dc.language.iso | eng | en_US |
| dc.publisher | 45th International Conference on Environmental Systems | en_US |
| dc.title | An Automated Test Bed for Rapid Characterization of Sorbent Materials for Siloxane Removal in Contaminated Airstreams | en_US |
| dc.type | Presentation | en_US |