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<p>Controlling pollution from per- and polyfluoroalkyl substances (PFAS) is a global challenge due to their toxicity, chemical stability and environmental persistence. Persulfate-based advanced oxidation processes (PS-AOPs) have emerged as a promising technology for degrading these persistent contaminants. However, the distinct physicochemical properties of PFAS lead to significant differences in the efficacy and mechanisms of PS-AOPs for PFAS removal, necessitating in-depth classification studies. This review critically examines the environmental fate and accumulation patterns of PFAS, focusing on PS-AOPs as a viable remediation strategy. Key contributions include: 1) Sorting out the migration and transformation patterns of PFAS in the environment; 2) Demonstration of PSAOP’s superiority over the advanced reduction process (ARP) for PFAS degradation; 3) A systematic analysis of recent advancements in various PS-AOPs, encompassing their mechanisms, influencing factors, and system characteristics; 4) An in-depth evaluation of how PFAS structure, particularly chain length and functional groups, affects degradation efficiency; 5) Three integrated AOPs/ARPs strategies providing actionable insights to address PFAS contamination. Collectively, this review offers actionable insights for optimizing AOPs and ARPs, with implications for advancing PFAS remediation technologies.</p>

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Per- and polyfluoroalkyl substances in the environment and their removal by advanced oxidation processes

  • 期刊论文

  • 发表日期：

    2025年7月1日

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  • Nile Wu,
  • Jiangfang Yu,
  • Jie Yuan,
  • Yue Lu,
  • Ya Pang,
  • Xi Liu,
  • Jiajia Wang,
  • Aoxue Yu,
  • Wu Xiao,
  • Lin Tang

摘要

Controlling pollution from per- and polyfluoroalkyl substances (PFAS) is a global challenge due to their toxicity, chemical stability and environmental persistence. Persulfate-based advanced oxidation processes (PS-AOPs) have emerged as a promising technology for degrading these persistent contaminants. However, the distinct physicochemical properties of PFAS lead to significant differences in the efficacy and mechanisms of PS-AOPs for PFAS removal, necessitating in-depth classification studies. This review critically examines the environmental fate and accumulation patterns of PFAS, focusing on PS-AOPs as a viable remediation strategy. Key contributions include: 1) Sorting out the migration and transformation patterns of PFAS in the environment; 2) Demonstration of PSAOP’s superiority over the advanced reduction process (ARP) for PFAS degradation; 3) A systematic analysis of recent advancements in various PS-AOPs, encompassing their mechanisms, influencing factors, and system characteristics; 4) An in-depth evaluation of how PFAS structure, particularly chain length and functional groups, affects degradation efficiency; 5) Three integrated AOPs/ARPs strategies providing actionable insights to address PFAS contamination. Collectively, this review offers actionable insights for optimizing AOPs and ARPs, with implications for advancing PFAS remediation technologies.