The untold story of PFAS alternatives: Insights into the occurrence, ecotoxicological impacts, and removal strategies in the aquatic environment

Water Research, Journal Year: 2023, Volume and Issue: 250, P. 121044 - 121044

Published: Dec. 23, 2023

Language: Английский

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Impacts of Perfluoroalkyl Substances on Aqueous and Nonaqueous Phase Liquid Dechlorination by Sulfidized Nanoscale Zerovalent Iron

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(25), P. 11193 - 11202

Published: June 11, 2024

Per- and poly fluoroalkyl substances (PFASs) are often encountered with nonaqueous phase liquid (NAPL) in the groundwater at fire-fighting military training sites. However, it is unclear how PFASs affect dechlorination performance of sulfidized nanoscale zerovalent iron (S-nFe0), which an emerging promising NAPL remediation agent. Here, S-nFe0 synthesized controllable S speciation (FeS or FeS2) were characterized to assess their interactions for trichloroethylene (TCE-NAPL). Surface-adsorbed blocked materials' reactive sites inhibited aqueous TCE dechlorination. In contrast, PFASs-adsorbed particles improved hydrophobicity tended enrich NAPL–water interface, re-exposed after accumulation into accelerate This PFASs-induced phenomenon allowed materials present a higher reactivity (up 1.8-fold) high electron efficiency 99%) TCE-NAPL Moreover, nFe0-FeS2 was more readily enriched interface selective than nFe0-FeS, regardless coexisting PFASs. These results unveil that small amount yet previously overlooked can favor reductions by S-nFe0, highlighting importance transportation induced remediation.

Language: Английский

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A critical review on ultrasound-assisted adsorption and desorption technology: mechanisms, influencing factors, applications, and prospects

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: unknown, P. 114307 - 114307

Published: Sept. 1, 2024

Language: Английский

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Adsorption of Per- and Polyfluoroalkyl Substances by Edible Nutraceutical-Amended Montmorillonite Clays: In Vitro, In Vivo and In Silico Enterosorption Strategies

Water Air & Soil Pollution, Journal Year: 2025, Volume and Issue: 236(5)

Published: April 4, 2025

Abstract Exposure of animals and humans to PFAS through contaminated water foods pose significant threats public health. To tackle this challenge, study aimed develop edible clays that might enhance the binding, detoxification, elimination in gastrointestinal tract. Montmorillonite (CM) were amended with caffeine (CMCAF), curcumin (CMCUR), riboflavin (CMRIB), binding efficacy for a mixture four (PFOS, GenX, PFOA PFBS) was determined. In vitro studies used explore adsorption isotherms while computational simulations investigate mixture, delineate contribution each molecule determine if can contribute enhanced different mixture. vivo models ( Lemna minor Hydra vulgaris ) validate silico establish safety effectiveness these clays. The resulting Q max K d values along curved shape Langmuir plot indicated saturable PFOS active surfaces CM All three demonstrated slightly higher capacity GenX than parent clay. Furthermore, elucidated as well predicting how mechanisms proof-of-concept established Caenorhabditis elegans, , where (at 1% w/v inclusion) protected against toxicities controls. This protection could be attributed biological activities nutraceuticals (caffeine, riboflavin, curcumin) including antioxidative, anti-inflammatory modulatory which mitigate oxidative stress inflammatory effects PFAS. These toxin binders may delivered mixtures additives flavored drinking food decrease exposure.

Language: Английский

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Occurrence of short- and ultra-short chain PFAS in drinking water from Flanders (Belgium) and implications for human exposure

Environmental Research, Journal Year: 2024, Volume and Issue: 260, P. 119753 - 119753

Published: Aug. 8, 2024

Language: Английский

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Natural mineral and industrial solid waste-based adsorbent for perfluorooctanoic acid and perfluorooctane sulfonate removal from surface water: Advances and prospects

Chemosphere, Journal Year: 2024, Volume and Issue: 362, P. 142662 - 142662

Published: June 25, 2024

Language: Английский

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Heavy-Metal Ions Control on PFAS Adsorption on Goethite in Aquatic Systems

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(45), P. 20235 - 20244

Published: Oct. 31, 2024

Per- and polyfluoroalkyl substances (PFAS) are ubiquitous environmental contaminants that often co-occur with heavy metals. Despite their prevalence, the mobility of PFAS in complex, multicomponent systems, particularly at molecular scale, remains poorly understood. The vast diversity low concentrations alongside anthropogenic natural underscore need for integrating mechanistic insights into sorption models. This study explores influence metal cations (Cu(II), Cd(II), Fe(II)) on adsorption four common (PFOA, PFOS, PFDA, GenX) onto goethite (α-FeOOH), a iron (oxyhydr)oxide both aquatic terrestrial environments. was highly dependent type, pH, ion concentration, surface complexation model effectively predicting these interactions. Cu(II) Cd(II) enhanced PFOS PFDA via ternary while slightly reducing PFOA GenX adsorption. Under anoxic conditions, Fe(II) significantly increased all PFAS, showing reactivity greater than those Cd(II). Additionally, organic matter mobility, although groundwater may counteract this by enhancing retention. These findings highlight key role transport offer critical behavior oxic-anoxic interfaces.

Language: Английский

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Biochar as a sustainable solution for per- and polyfluoroalkyl substances (PFAS) Removal: Progress, Challenges, and Future Horizons

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 132674 - 132674

Published: March 1, 2025

Language: Английский

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Ecosystem-wide PFAS characterization and environmental behavior at a heavily contaminated desert oasis in the southwestern U.S.

Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 121872 - 121872

Published: May 1, 2025

Language: Английский

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Insight into low-grade natural Linze palygorskite for composite particles preparation towards efficient wastewater treatment

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2024, Volume and Issue: 693, P. 134069 - 134069

Published: April 23, 2024

Language: Английский

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