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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 Wa...
Breaking the Persistence Cycle of Per- and Polyfluoroalkyl Substances From Concentrated Waste Streams by Boron Doped Diamond Electrocatalysis and Thermal Degradation

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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  
Environmental engineering
일반주제명  
Physical chemistry
일반주제명  
Environmental science
키워드  
Electrocatalysis
키워드  
Regeneration
키워드  
Thermal oxidation
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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■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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