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Degradation of Methylene Blue and 1, 4-Dioxane from Groundwater by Pulsed Discharge Non-Thermal Plasma Reactor

Title: Degradation of Methylene Blue and 1, 4-Dioxane from Groundwater by Pulsed Discharge Non-Thermal Plasma Reactor.
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Name(s): Zhang, Qiao, author
Locke, Bruce R., professor directing thesis
Chella, Ravindran, committee member
Tang, Youneng, committee member
Florida State University, degree granting institution
College of Engineering, degree granting college
Department of Chemical and Biomedical Engineering, degree granting department
Type of Resource: text
Genre: Text
Issuance: monographic
Date Issued: 2016
Publisher: Florida State University
Place of Publication: Tallahassee, Florida
Physical Form: computer
online resource
Extent: 1 online resource (57 pages)
Language(s): English
Abstract/Description: Plasma generated by strong electric field has been studied for almost 100 years. The plasma-liquid system discharge presents new and interesting applications in the fields of environmental science, material processing and analytical chemistry. Extensive research has focused on exploring the potential application of plasma treatment of organic compounds in wastewater such as phenol, organic dyes, and TCE. The reactor electrode configurations ranges from point to point, point to plate and wire cylinder. Power supplies include DC, AC, pulsed, and microwave. The goals of the present work were to explore the role of oxygen in a water-film plasma reactor for dye degradation and to combine this non-thermal gas-liquid plasma reactor (NTPR) with a bioreactor to treat 50ppm 1,4-dioxane in groundwater. Two types of power supply were used including an automobile ignition coil driven by DC power supply with a function generator and a nanosecond pulser. No significant additional degradation of methylene blue was detected by adding oxygen into the inlet gas compared to the pure argon case although significant ozone was produced and measured in the gas phase. This is explained by the short gas residence time and low rate of mass transfer preventing the generated ozone to transfer from gas phase into liquid phase as well as by the high reaction rate between OH radical and MB in comparison to the ozone reaction rate. A 50ppm 1,4-dioxane synthetic media was pretreated in the NTPR at five different liquid flowrates (2,5,15,20mL/min). The combined scenario of using plasma treatment at 2ml/min and 1-month microorganism treatment was able to reduce dioxane to below 1μg/L and TOC to below 4 mg C/L.
Identifier: FSU_FA2016_Zhang_fsu_0071N_13669 (IID)
Submitted Note: A Thesis submitted to the Department of Chemical and Biomedical Engineering in partial fulfillment of the Master of Science.
Degree Awarded: Fall Semester 2016.
Date of Defense: November 8, 2016.
Bibliography Note: Includes bibliographical references.
Advisory Committee: Bruce R. Locke, Professor Directing Thesis; Ravindran Chella, Committee Member; Youneng Tang, Committee Member.
Subject(s): Chemical engineering
Environmental engineering
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_FA2016_Zhang_fsu_0071N_13669
Owner Institution: FSU

Choose the citation style.
Zhang, Q. (2016). Degradation of Methylene Blue and 1, 4-Dioxane from Groundwater by Pulsed Discharge Non-Thermal Plasma Reactor. Retrieved from http://purl.flvc.org/fsu/fd/FSU_FA2016_Zhang_fsu_0071N_13669