Emission of Perfluoroalkyl Acids and Unidentified Organofluorine from Swedish Municipal Waste Incineration Plants

Environmental Science & Technology Letters, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 12, 2024

Incineration is commonly used to dispose of waste contaminated with per- and polyfluoroalkyl substances (PFAS), despite few experimental data supporting the efficacy this technique. To investigate prevalence PFAS in residuals from Swedish municipal incineration (MWI) plants, samples fly ash, bottom flue gas condensate were collected 27 Sweden's 38 plants analyzed for 13 perfluoroalkyl acids (PFAAs). ∑13PFAA concentrations ranged 0.28 180 ng/L, 0.22–1.6 μg/kg, 0.18–38 condensate, respectively (detection frequencies 79, 21, 30%, respectively). Total fluorine (TF) measurements a subset revealed <0.20–11 mg F/L (n = 8) 120–5400 μg F/g ashes 8), former which was primarily attributed inorganic fluorine. Extractable organofluorine (EOF) exceeded by up 3 orders magnitude (0.70–16 ash [n 3] <0.80–9.0 2]), suggesting that majority occurring MWI remains unidentified. Collectively, these demonstrate temperatures exceeding 1000 °C, PFAAs other fluorinated may form and/or persist during risk being released environment via residues.

Language: Английский

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Implications of grouping per‐ and polyfluoroalkyl substances for contaminated site regulation

Remediation Journal, Journal Year: 2024, Volume and Issue: 34(3)

Published: April 1, 2024

Abstract Per‐ and polyfluoroalkyl substances (PFAS) are a broad group of persistent organic compounds with vastly differing physicochemical toxicological properties. Some jurisdictions have proposed to regulate PFAS as single class overcome the limitations regulating such diverse on chemical‐by‐chemical basis. Implications been discussed for production use, but equivalent discussion implications managing contaminated sites is largely lacking. This opinion piece summarizes views environmental consultants, regulators, land managers, academics significant experience in researching or PFAS. The considered that neither approach nor well suited risks from site setting, defining subgroups would value. Second, some not all group, hypothesize properties drive fate transport those influence toxicity bioaccumulation animals. may be valuable observation future discussions dividing into subclasses regulation based rather than purely structural definitions.

Language: Английский

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Sorption/desorption and degradation of long- and short-chain PFAS by anion exchange resin and UV/sulfite system

Environmental Pollution, Journal Year: 2024, Volume and Issue: 361, P. 124847 - 124847

Published: Aug. 30, 2024

A combined sorption/desorption and UV/sulfite degradation process was investigated for achieving efficient elimination of PFAS from water. Two gel-type resins, Purolite A532E A600, one macroporous resin, A860, were firstly tested the sorption individual PFPrA, PFHxA, PFOA, PFOS, GenX at different concentrations. Sorption data density functional theory (DFT) calculations revealed that electrostatic interactions predominated short-chain hydrophobic played a more significant role long-chain than PFAS. A600 A860 selected desorption tests with 0.025% NaOH, 5% NaCl, NH

Language: Английский

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A Pilot Study of Bis-perfluoroalkyl Sulfonimides in Dust from E-waste and Urban Regions

Environmental Science & Technology Letters, Journal Year: 2024, Volume and Issue: 11(12), P. 1384 - 1390

Published: Nov. 12, 2024

Following global regulations on traditional per- and polyfluoroalkyl substances (PFAS), alternative PFAS raise emerging concerns. Our study focused a group of bis-perfluoroalkyl sulfonimides (bis-FASIs) explored whether electronic waste (e-waste) dismantling recycling constitute potential source bis-FASIs to the environment. The revealed ubiquitous occurrence bisperfluoromethane sulfonimide (bis-FMeSI) in dust from e-waste sites, surrounding regions (20–50 km distant sites), urban areas with levels descending order along distance sites. median level bis-FMeSI was 12 ng/g dust, constituting approximately 10% total (117 ng/g). dropped 0.45 indoor outdoor as well 0.67 1.1 traffic roads underground parking lots, respectively, megacity located 100 away findings indicate that appear an type widespread distribution Therefore, they should be included into monitoring networks regionally or globally for better understanding their sources, distribution, fate, human exposure scenarios associated health risks.

Language: Английский

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Latest trends in the environmental analysis of PFAS including nontarget analysis and EOF-, AOF-, and TOP-based methodologies

Analytical and Bioanalytical Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 21, 2024

Language: Английский

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