Emission of Perfluoroalkyl Acids and Unidentified Organofluorine from Swedish Municipal Waste Incineration Plants DOI Creative Commons
Jana H. Johansson, Damien Johann Bolinius,

Johan Strandberg

и другие.

Environmental Science & Technology Letters, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 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.

Язык: Английский

Filling the Gaps in PFAS Detection: Integrating GC-MS Non-Targeted Analysis for Comprehensive Environmental Monitoring and Exposure Assessment DOI
Seth Newton, John A. Bowden, Nathaniel Charest

и другие.

Environmental Science & Technology Letters, Год журнала: 2025, Номер 12(2), С. 104 - 112

Опубликована: Янв. 23, 2025

Per- and polyfluoroalkyl substances (PFAS) have garnered increasing attention in recent years, non-targeted analysis (NTA) has become essential for elucidating novel PFAS structures. NTA research been dominated by liquid chromatography–mass spectrometry (LC-MS) with gas (GC-MS) used less often as evidenced bibliometrics. However, the performance of GC-MS studies (GC-NTA) rivals that LC-ESI-MS, is shown to cover a complementary chemical space. An LC-ESI-MS amenability model applied list approximately 12,000 revealed than 10% known chemistry predicted be amenable typical LC-MS analysis. Therefore, there strong potential applying methods more fully assess environmental contamination landscape, uniquely shedding light on both PFAS, especially within space realm volatile semivolatile PFAS. Waste streams from fluorochemical manufacturing facilities heavily studied using targeted GC-MS; however, GC-NTA needed discover are not emitted facilities. Studies incineration PFAS-containing materials, such aqueous film forming foam, focused destruction parent compounds, little about transformation products formed during processes. holds elucidate when incinerated. Wastewater treatment plants landfills sources environment, yet understand air emissions these sources. Consumer lead indoor exposures via dust, but this area either or GC-MS. Despite challenges advancing GC-NTA, we call researchers, grantors, managers, other stakeholders recognize necessity so may face together.

Язык: Английский

Процитировано

1
Sustainable ion exchange-based remediation of per- and polyfluoroalkyl substances; recent progress and future prospects DOI
Nima Mohammadi, Serkan Güçlü, Asu Ece Atespare

и другие.

Journal of Water Process Engineering, Год журнала: 2025, Номер 71, С. 107345 - 107345

Опубликована: Фев. 25, 2025

Язык: Английский

Процитировано

0
Best Practices for Experimental Design, Testing, and Reporting of Aqueous PFAS-Degrading Technologies DOI

Allyson Leigh Junker,

Jan-Max Arana Juve, Lu Bai

и другие.

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

Опубликована: Май 1, 2025

Increased awareness of pervasive per- and polyfluoroalkyl substances (PFAS) contamination the need for zero-pollution treatment solutions necessitate scientific engineering community to respond urgently systematically. Existing approaches lack reproducible standardized methods report technological capabilities. Consequently, it is difficult compare innovations accurately assess their potential. In this Perspective, we shed light on hurdles encountered in lab-scale research development aqueous PFAS destruction technologies with a focus chemical offer recommendations overcoming them. Best practices are provided developing robust laboratory protocols covering crucial aspects such as experimental planning, sample storage analysis, waste management. Further, present five criteria standardize reporting performance advances degrading technologies: 1) scope, 2) defluorination efficiency, 3) relative energy consumption, 4) material stability, 5) unit process considerations. Through dissemination these insights, aim foster progress highly effective solutions.

Язык: Английский

Процитировано

0
Surveillance of PFAS in sludge and biosolids at 12 water resource recovery facilities DOI Creative Commons
Shubhashini Oza, Katherine Y. Bell, Zhiliang Xu

и другие.

Journal of Environmental Quality, Год журнала: 2024, Номер unknown

Опубликована: Июль 14, 2024

Abstract Per‐ and polyfluoroalkyl substances (PFAS) are refractory anthropogenic chemicals current treatment processes at municipal water resource recovery facilities (WRRFs) cannot efficiently degrade them, hence, these cycle through the environment. Certain PFAS can be concentrated in biosolids from WRRFs commonly land applied for beneficial reuse. Given recent advances measurement of PFAS, documentation range concentrations pre‐stabilized sludge stabilized is critical to evaluating best practices assessing potential human health ecological risks. In this study, post‐stabilized samples were collected 12 major across United States. analyzed using Environmental Protection Agency (EPA) Method SW846‐3500C/537.1, Draft EPA 1633, by one commercial laboratory two university research laboratories, respectively. Results comparison among laboratories demonstrated statistical differences split samples. For example, 5:3 FTCA (fluorotelomer carboxylic acid) Lab 1 measured 21 ng/g (dry), while they detected 151 (dry) 3. Further, higher observed compared sludges, regardless or analysis method, even when solids destruction stabilization was considered. Further required refine methods analyses prior being used development regulatory actions as well understanding how various protocols could impact land‐applied biosolids.

Язык: Английский

Процитировано

3
Comparative evaluation of PFAS-selective adsorbents in hard-to-treat residual waste streams DOI
Ashley Hesterberg Butzlaff, Bineyam Mezgebe,

Ashton Collins

и другие.

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 161983 - 161983

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0
Fate of biosolids‐bound PFAS through pyrolysis coupled with thermal oxidation for air emissions control DOI Creative Commons
Lloyd J. Winchell,

Joshua Cullen,

John J. Ross

и другие.

Water Environment Research, Год журнала: 2024, Номер 96(11)

Опубликована: Ноя. 1, 2024

Abstract Pyrolysis has been identified as a possible thermal treatment process for reducing perfluoroalkyl and polyfluoroalkyl substances (PFAS) from wastewater solids, though off‐gas the pyrolysis unit can still be source of PFAS emissions. In this work, fate through laboratory‐scale coupled with oxidizer off‐gasses is documented. Between 91.5% >99.9% reduction was observed entire system specific compounds based on targeted analyses. Overall, removed 99.4% moles introduced. Furthermore, shorter chain variants comprised majority reportable in flue gas, indicating longer present dried biosolids fed to pyrolyzer decompose system. Practitioner Points Thermal oxidation promising technology exhaust systems associated treatments. demonstrated significant degradation capabilities, gas phase emissions comprising only 0.200% initial concentrations Short‐chain made up higher percent emissions, ranging between 54.4% 79.5% molar basis. The possibility recombinant formation partial decomposition needed area research.

Язык: Английский

Процитировано

2
Emission of Perfluoroalkyl Acids and Unidentified Organofluorine from Swedish Municipal Waste Incineration Plants DOI Creative Commons
Jana H. Johansson, Damien Johann Bolinius,

Johan Strandberg

и другие.

Environmental Science & Technology Letters, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 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.

Язык: Английский

Процитировано

1