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Elucidating Nanobubbles Role in Enhancing Advanced Oxidation Processes for Water Treatment Technologies
Elucidating Nanobubbles Role in Enhancing Advanced Oxidation Processes for Water Treatment Technologies
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105309
- ISBN
- 9798265465887
- DDC
- 628
- 서명/저자
- Elucidating Nanobubbles Role in Enhancing Advanced Oxidation Processes for Water Treatment Technologies
- 발행사항
- [Sl] : Arizona State University, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 208 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-06, Section: B.
- 주기사항
- Advisor: Garcia-Segura, Sergi.
- 학위논문주기
- Thesis (Ph.D.)--Arizona State University, 2025.
- 초록/해제
- 요약Water scarcity and growing global demand for clean water have heightened the urgency to develop advanced treatment technologies that can ensure safe water reuse and remove persistent contaminants. Advanced oxidation processes (AOPs) offer strong oxidative capabilities through the formation of highly reactive oxygen species (ROS), particularly hydroxyl radicals (•OH). However, conventional AOPs are limited by short oxidant lifetimes, poor gas-liquid mass transfer, and high energy requirements. This dissertation explores the integration of nanobubble (NB) technology with electrochemical and ozone-based AOPs to enhance oxidant generation, stability, and efficiency across different treatment configurations and water matrices.The first study evaluates several electrochemical AOPs (electrochemical oxidation (ECO), electro-Fenton (EF), and photoelectro-Fenton (PEF) for the treatment of complex synthetic dye mixtures. Among them, PEF achieved the highest mineralization efficiency due to synergistic •OH generation and catalyst photoregeneration, demonstrating the resilience of electrochemical AOPs under complex matrix conditions.The second study investigates the use of oxygen NBs as an alternative gas delivery method to improve the electrogeneration of hydrogen peroxide (H₂O₂). The nanoscale confinement of oxygen increased mass transfer and gas utilization efficiency, leading to significantly higher H₂O₂ production compared to conventional macro bubbling.Building upon these findings, oxygen NBs were applied within a full EF system to treat tetracycline, a common antibiotic pollutant. NB-enhanced systems achieved equivalent degradation and mineralization efficiency to traditional EF while improving gas efficiency by magnitudes, confirming their potential to improve radical-based treatment performance.The final study examined ozone (O3) NBs across ultrapure, and both synthetic and real freshwater/ saline matrices to understand their physicochemical transformations and oxidative behavior. Results revealed improved O3 dissolution, diminished oxidant lifetime, and improved selective reactivity toward organic matter, though salinity and natural organic content influenced decay kinetics.Overall, this work establishes a mechanistic and practical framework for integrating NBs into advanced oxidation systems. The findings demonstrate that NB-assisted AOPs can achieve superior gas efficiency, oxidant stability, and pollutant removal selectivity, advancing the development of scalable and sustainable water treatment technologies.
- 일반주제명
- Chemistry
- 일반주제명
- Nanotechnology
- 일반주제명
- Environmental science
- 키워드
- Nanobubble
- 기타저자
- Arizona State University Civil Environmental and Sustainable Engineering
- 기본자료저록
- Dissertations Abstracts International. 87-06B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008260126s2025 us c eng d■001000017360136
■00520260202105309
■006m o d
■007cr#unu||||||||
■020 ▼a9798265465887
■035 ▼a(MiAaPQ)AAI32284148
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a628
■1001 ▼aLuna Magdaleno, Andre.
■24510▼aElucidating Nanobubbles Role in Enhancing Advanced Oxidation Processes for Water Treatment Technologies
■260 ▼a[Sl]▼bArizona State University▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a208 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-06, Section: B.
■500 ▼aAdvisor: Garcia-Segura, Sergi.
■5021 ▼aThesis (Ph.D.)--Arizona State University, 2025.
■520 ▼aWater scarcity and growing global demand for clean water have heightened the urgency to develop advanced treatment technologies that can ensure safe water reuse and remove persistent contaminants. Advanced oxidation processes (AOPs) offer strong oxidative capabilities through the formation of highly reactive oxygen species (ROS), particularly hydroxyl radicals (•OH). However, conventional AOPs are limited by short oxidant lifetimes, poor gas-liquid mass transfer, and high energy requirements. This dissertation explores the integration of nanobubble (NB) technology with electrochemical and ozone-based AOPs to enhance oxidant generation, stability, and efficiency across different treatment configurations and water matrices.The first study evaluates several electrochemical AOPs (electrochemical oxidation (ECO), electro-Fenton (EF), and photoelectro-Fenton (PEF) for the treatment of complex synthetic dye mixtures. Among them, PEF achieved the highest mineralization efficiency due to synergistic •OH generation and catalyst photoregeneration, demonstrating the resilience of electrochemical AOPs under complex matrix conditions.The second study investigates the use of oxygen NBs as an alternative gas delivery method to improve the electrogeneration of hydrogen peroxide (H₂O₂). The nanoscale confinement of oxygen increased mass transfer and gas utilization efficiency, leading to significantly higher H₂O₂ production compared to conventional macro bubbling.Building upon these findings, oxygen NBs were applied within a full EF system to treat tetracycline, a common antibiotic pollutant. NB-enhanced systems achieved equivalent degradation and mineralization efficiency to traditional EF while improving gas efficiency by magnitudes, confirming their potential to improve radical-based treatment performance.The final study examined ozone (O3) NBs across ultrapure, and both synthetic and real freshwater/ saline matrices to understand their physicochemical transformations and oxidative behavior. Results revealed improved O3 dissolution, diminished oxidant lifetime, and improved selective reactivity toward organic matter, though salinity and natural organic content influenced decay kinetics.Overall, this work establishes a mechanistic and practical framework for integrating NBs into advanced oxidation systems. The findings demonstrate that NB-assisted AOPs can achieve superior gas efficiency, oxidant stability, and pollutant removal selectivity, advancing the development of scalable and sustainable water treatment technologies.
■590 ▼aSchool code: 0010.
■650 4▼aEnvironmental engineering
■650 4▼aChemistry
■650 4▼aNanotechnology
■650 4▼aEnvironmental science
■653 ▼aReactive oxygen species
■653 ▼aAdvanced oxidation processes
■653 ▼aNanobubble
■653 ▼aHydrogen peroxide
■690 ▼a0775
■690 ▼a0652
■690 ▼a0768
■690 ▼a0485
■71020▼aArizona State University▼bCivil, Environmental and Sustainable Engineering.
■7730 ▼tDissertations Abstracts International▼g87-06B.
■790 ▼a0010
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360136▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
