The Use of Ultra-Violet (UV) Light Emitting Diodes (LEDS) in an Advanced Oxidation Process (AOP) with Brilliant Blue FCF as an Indicator
AIR FORCE INSTITUTE OF TECHNOLOGY WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
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Water contamination can result from terrorist acts, industrial accidents, or natural phenomena. Advanced Oxidation Processes AOPs represent a potentially useful method for water decontamination. This research explored the application of Brilliant Blue FCF as a witness dye in an Advanced Oxidation Process AOP employing Ultra-Violet UV Light Emitting Diodes LEDs with peroxide H2O2. In addition to exploring the attributes of Brilliant Blue FCF within this application, this research employed this dye to evaluate the effect of varied UV LED duty cycles pulsing on the reaction rates of a UVH2O2 AOP. Experiments performed using Brilliant Blue FCF indicated that it performed suitably as a witness dye with improved characteristics as compared to methylene blue. Further, the experiments indicated that when the LEDs were driven at lower duty cycles e.g., 10 and 5 they were 165 to 200 more efficient at driving the UVH2O2 AOP than they were when driven continuously e.g., a duty cycle of 100.
- Electrooptical and Optoelectronic Devices