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Breaking the Persistence Cycle of Per- and Polyfluoroalkyl Substances From Concentrated Waste Streams by Boron Doped Diamond Electrocatalysis and Thermal Degradation
Breaking the Persistence Cycle of Per- and Polyfluoroalkyl Substances From Concentrated Waste Streams by Boron Doped Diamond Electrocatalysis and Thermal Degradation
Detailed Information
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202104719
- ISBN
- 9798288832024
- DDC
- 628
- 저자명
- Lin, Zunhui.
- 서명/저자
- Breaking the Persistence Cycle of Per- and Polyfluoroalkyl Substances From Concentrated Waste Streams by Boron Doped Diamond Electrocatalysis and Thermal Degradation
- 발행사항
- [Sl] : Arizona State University, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 210 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-01, Section: B.
- 주기사항
- Advisor: Westerhoff, Paul.
- 학위논문주기
- Thesis (Ph.D.)--Arizona State University, 2025.
- 초록/해제
- 요약Per- and polyfluoroalkyl substances (PFAS) are persistent environmental contaminants commonly detected in industrial effluents and drinking water supplies. The widespread use and release of PFAS raise significant environmental and public health concerns due to their chemical stability, bioaccumulation potential, and toxicity. My dissertation investigates two PFAS removal strategies: electrocatalysis and thermal treatment, both of which have demonstrated high efficiencies.The electrocatalytic treatment of PFAS in semiconductor wastewater was evaluated for PFAS mineralization and byproduct bioaccumulation reduction. Using a batch reactor with boron-doped diamond (BDD) electrodes, perfluorooctanoic acid (PFOA) solutions were treated while monitoring byproducts such as fluoride, adsorbable organofluorine (AOF), and lipid bilayer partitioning (LBP). BDD electrocatalysis achieved 99% PFOA removal and reduced the bioaccumulation potential of byproducts more rapidly than PFOA itself at equivalent energy input. Strong correlations among AOF, PFAS concentration, and LBP established AOF as a practical surrogate for PFOA degradation and an indicator of total organofluorine bioaccumulation.Thermal oxidation experiments using combustion ion chromatography (CIC) provided a rapid, lab-scale method to assess the risk of products of incomplete destruction (PIDs) from PFOS-laden solids by measuring hydrogen fluoride (HF) recovery. Results showed that minimal fluoride and calcium content had little effect on HF recovery, and ion exchange resins and granular activated carbon (GAC) posed low PID risks. In contrast, clays with high calcium and fluorine content reduced HF recovery. Thermal pyrolysis under inert conditions preserved GAC structure and adsorption capacity after three regeneration cycles. Tube furnace experiments demonstrated that regenerating PFOS-laden GAC with Ca(OH)2 additives maintained PFOS adsorption performance. A life cycle assessment further indicated that thermal regeneration has lower environmental impacts than direct incineration. Additives like Ca(OH)2 enhance sustainability while preserving GAC integrity and treatment efficacy.Findings of my dissertation in electrocatalysis, thermal oxidation, and pyrolysis advance scalable, efficient, and environmentally responsible approaches for PFAS remediation.
- 일반주제명
- Physical chemistry
- 일반주제명
- Environmental science
- 키워드
- Electrocatalysis
- 키워드
- Regeneration
- 기타저자
- Arizona State University Civil Environmental and Sustainable Engineering
- 기본자료저록
- Dissertations Abstracts International. 87-01B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202104719
■006m o d
■007cr#unu||||||||
■020 ▼a9798288832024
■035 ▼a(MiAaPQ)AAI32121115
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a628
■1001 ▼aLin, Zunhui.
■24510▼aBreaking the Persistence Cycle of Per- and Polyfluoroalkyl Substances From Concentrated Waste Streams by Boron Doped Diamond Electrocatalysis and Thermal Degradation
■260 ▼a[Sl]▼bArizona State University▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a210 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-01, Section: B.
■500 ▼aAdvisor: Westerhoff, Paul.
■5021 ▼aThesis (Ph.D.)--Arizona State University, 2025.
■520 ▼aPer- and polyfluoroalkyl substances (PFAS) are persistent environmental contaminants commonly detected in industrial effluents and drinking water supplies. The widespread use and release of PFAS raise significant environmental and public health concerns due to their chemical stability, bioaccumulation potential, and toxicity. My dissertation investigates two PFAS removal strategies: electrocatalysis and thermal treatment, both of which have demonstrated high efficiencies.The electrocatalytic treatment of PFAS in semiconductor wastewater was evaluated for PFAS mineralization and byproduct bioaccumulation reduction. Using a batch reactor with boron-doped diamond (BDD) electrodes, perfluorooctanoic acid (PFOA) solutions were treated while monitoring byproducts such as fluoride, adsorbable organofluorine (AOF), and lipid bilayer partitioning (LBP). BDD electrocatalysis achieved 99% PFOA removal and reduced the bioaccumulation potential of byproducts more rapidly than PFOA itself at equivalent energy input. Strong correlations among AOF, PFAS concentration, and LBP established AOF as a practical surrogate for PFOA degradation and an indicator of total organofluorine bioaccumulation.Thermal oxidation experiments using combustion ion chromatography (CIC) provided a rapid, lab-scale method to assess the risk of products of incomplete destruction (PIDs) from PFOS-laden solids by measuring hydrogen fluoride (HF) recovery. Results showed that minimal fluoride and calcium content had little effect on HF recovery, and ion exchange resins and granular activated carbon (GAC) posed low PID risks. In contrast, clays with high calcium and fluorine content reduced HF recovery. Thermal pyrolysis under inert conditions preserved GAC structure and adsorption capacity after three regeneration cycles. Tube furnace experiments demonstrated that regenerating PFOS-laden GAC with Ca(OH)2 additives maintained PFOS adsorption performance. A life cycle assessment further indicated that thermal regeneration has lower environmental impacts than direct incineration. Additives like Ca(OH)2 enhance sustainability while preserving GAC integrity and treatment efficacy.Findings of my dissertation in electrocatalysis, thermal oxidation, and pyrolysis advance scalable, efficient, and environmentally responsible approaches for PFAS remediation.
■590 ▼aSchool code: 0010.
■650 4▼aEnvironmental engineering
■650 4▼aPhysical chemistry
■650 4▼aEnvironmental science
■653 ▼aElectrocatalysis
■653 ▼aRegeneration
■653 ▼aThermal oxidation
■690 ▼a0775
■690 ▼a0768
■690 ▼a0494
■71020▼aArizona State University▼bCivil, Environmental and Sustainable Engineering.
■7730 ▼tDissertations Abstracts International▼g87-01B.
■790 ▼a0010
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358561▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
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