Efficient and fast remediation of soil contaminated by per- and polyfluoroalkyl substances (PFAS) by high-frequency heating

Journal of Hazardous Materials, Год журнала: 2023, Номер 463, С. 132660 - 132660

Опубликована: Сен. 29, 2023

Язык: Английский

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“Forever chemicals”: a sticky environmental problem

Frontiers of Environmental Science & Engineering, Год журнала: 2024, Номер 18(10)

Опубликована: Июль 18, 2024

Язык: Английский

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Comprehensive review of combustion ion chromatography for the analysis of total, adsorbable, and extractable organic fluorine

Journal of Separation Science, Год журнала: 2024, Номер 47(15)

Опубликована: Авг. 1, 2024

Poly- and perfluoroalkyl substances (PFAS) are a class of persistent organic pollutants whose high stability appreciable water solubility have led to near-global contamination. PFAS bioaccumulative toxins that been linked myriad disorders detected nearly universally in human blood. Liquid chromatography-tandem mass spectrometry is the most frequent method used for quantitation, though this typically only measures few dozen >14 000 known has shown account small portion total fluorine present. Sum parameter methods such as total, extractable, adsorbable emerged alternative measurements determination. Combustion ion chromatography become preferred organofluorine measurement where sorbent or extract containing combusted emitted hydrofluoric acid (HF) measure cumulative Herein we critically review types measurement, their separation from sample matrix, key parameters analytical instrument affect sensitivity, reproducibility, recovery with regards analysis.

Язык: Английский

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Fluorine mass flow in long-chain perfluoroalkyl carboxylic acids during thermal regeneration of granular activated carbon

Journal of Water Process Engineering, Год журнала: 2025, Номер 70, С. 106990 - 106990

Опубликована: Янв. 15, 2025

Язык: Английский

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Piezoelectric Ball Milling Treatment of PFAS-Laden Spent Resins

Environmental Science & Technology Letters, Год журнала: 2025, Номер unknown

Опубликована: Март 19, 2025

Anion exchange resins (AERs) have been widely used for the removal of perfluoroalkyl and polyfluoroalkyl substances (PFAS) from water. However, regardless whether AERs are regenerable or single use, disposal end-of-life presents significant challenges. Conventional waste management strategies, such as landfill incineration, increasingly under scrutiny may face impending bans due to environmental concerns. This study introduces a nonthermal, solvent-free process effective destruction PFAS on by co-milling piezoelectric boron nitride (BN) powders with contaminated stainless steel (SS) balls. The approach achieved complete PFOS in two types (PFA694E AmberLite IRA 67), near-quantitative (∼100%) defluorination observed treatment PFA694E AER. Comprehensive targeted analysis suspect screening transformation products (TPs) elucidated reaction mechanisms confirmed that functional groups did not participate reaction. process's effectiveness was further validated treating field-collected single-use (PFA694 PSR2 Plus) mixtures varying chain lengths head groups. After treatment, levels were reduced below nanogram per gram detection limits, no release standard leaching tests.

Язык: Английский

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Unraveling Hidden Infrared Spectral Signatures in PFAS Thermal Degradation with Two-Dimensional Correlation Spectroscopy

Environmental Science & Technology Letters, Год журнала: 2025, Номер unknown

Опубликована: Апрель 4, 2025

Язык: Английский

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The Effects of Granular Activated Carbon Heating Rate and Moisture Content on Defluorination of Per- and Polyfluoroalkyl Substances during Microwave Regeneration

Water Research, Год журнала: 2025, Номер unknown, С. 123618 - 123618

Опубликована: Апрель 1, 2025

Язык: Английский

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Comprehensive evaluation of chemicals in residual and condensate during landfill leachate evaporation

Chemosphere, Год журнала: 2025, Номер 380, С. 144458 - 144458

Опубликована: Май 9, 2025

Язык: Английский

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Treatment of PFAS-laden Solids Via Fluidized Bed Gliding Arc Plasmatron

Journal of Hazardous Materials, Год журнала: 2025, Номер 494, С. 138678 - 138678

Опубликована: Май 19, 2025

Язык: Английский

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Insights into Photo/Electrocatalysts for the Degradation of Per- and Polyfluoroalkyl Substances (PFAS) by Advanced Oxidation Processes

Catalysts, Год журнала: 2023, Номер 13(9), С. 1308 - 1308

Опубликована: Сен. 19, 2023

Per- and polyfluoroalkyl substances (PFASs) are an emerging group of persistent organic pollutants in aquatic environments with high levels toxicity bioaccumulation. The risks posed by PFASs to the environment health have attracted increasing attention. To remove them from water, advanced oxidation processes (AOPs), merits efficiency low cost, mainly used. Photo/electrocatalytic heterogeneous AOPs, assistance nanostructured catalysts external energy form light/electricity, emerged as one most powerful techniques, overcoming difficulty associated defluorination achieving effective complete degradation water. structures photo/electrocatalysts play a critical role production reactive oxygen species, electron transfer process, pathway its efficiency. Herein, elucidate structure–performance relationship, review for enhanced organized according their composition nanostructure design, is provided. This article focused on (1) mechanisms pathways PFAS photo/electrocatalytic (2) structural designs modifications AOPs. Finally, challenges prospects future research into AOPs field remediation discussed.

Язык: Английский

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