Date of Award

3-26-2015

Document Type

Thesis

Degree Name

Master of Science in Engineering Management

Department

Department of Systems Engineering and Management

First Advisor

Michael E. Miller, PhD.

Abstract

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 UV/H2O2 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 UV/H2O2 AOP than they were when driven continuously (e.g., a duty cycle of 100%).

AFIT Designator

AFIT-ENV-MS-15-M-198

DTIC Accession Number

ADA616150

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