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Electrolysis Catalyzed Ozonation as an Advanced Oxidation Process for Wastewater Treatment

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Title: Electrolysis Catalyzed Ozonation as an Advanced Oxidation Process for Wastewater Treatment
Author: Heebner, Anthony
Department: School of Engineering
Program: Engineering
Advisor: Abbassi, Bassim
Abstract: The prohibitive cost of advanced oxidation processes (AOPs) necessitates the development of innovative variations to increase their applicability. This investigation evaluated the combination of ozonation and electrolysis using iron electrodes, as a catalytic ozonation AOP for the mineralization of organic compounds. The operating parameters of initial pH and current density were optimized to maximize TOC removal, using response surface methodology. Under optimal conditions of 12 mA/cm2 and an initial pH of 9, 63% TOC removal was achieved after 60 minutes of treatment. A comparison of chemical and electrochemical catalyst dosage revealed that the electrochemical method was more effective from the perspective of TOC removal. Using an indirect detection method involving tertiary butyl alcohol, the presence of hydroxyl radicals was detected and identified as the primary oxidizing species responsible for TOC removal. Overall, the performance of this treatment method was successfully demonstrated as an AOP for wastewater treatment.
URI: https://hdl.handle.net/10214/25715
Date: 2021
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