Ultraviolet Light Emitting Diodes for Disinfection of Spacecraft Potable Water Systems 2009-01-2508
This report describes proof-of-concept testing of a commercial-off-the-shelf deep ultraviolet LED for future application as a point-of-use or residual disinfection device for spacecraft potable water systems. The electro-optical performance and disinfection efficacy of a 0.5 mW 265nm UV-C LED (UVTOP, Sensor Electronic Technology, Inc., Columbia, SC) was measured in both static and flow environments against five challenge microorganisms inoculated into potable water at an initial concentration ≥ 108 cells per milliliter. The germicidal irradiation from a single UV-C LED array was sufficient to effect > 4-log kill (> 99.99%) of the challenge bacterial population in < 60 minutes contact time.
Citation: Birmele, M., McCoy, L., Soler, R., and Roberts, M., "Ultraviolet Light Emitting Diodes for Disinfection of Spacecraft Potable Water Systems," SAE Technical Paper 2009-01-2508, 2009, https://doi.org/10.4271/2009-01-2508. Download Citation
Author(s):
Michele Birmele, LaShelle McCoy, Robert Soler, Michael S. Roberts
