Rapid and highly efficient removal of aqueous perfluorooctanoic acid using deep eutectic solvents for sustainable water remediation: An integrated experimental-modeling approach

Chemical Engineering Journal, Год журнала: 2024, Номер 495, С. 153668 - 153668

Опубликована: Июль 2, 2024

This work reports on the first use of deep eutectic solvents (DESs) as an environmentally sustainable solution for extractive removal perfluorooctanoic acid (PFOA), one most prevalent and persistent emerging contaminants, from aqueous media. The design framework DESs was based multiple metrics, including extraction performance, density, viscosity, environmental impact, hydrophobicity. Through multi-criteria evaluation ten candidate DESs, trioctylphosphine oxide lauric (TOPO:LauA, 1:1) demonstrated exceptional single-stage efficiency (99.74 %), far outperforming toluene benchmark (82.26 showing favorable characteristics across all other assessed criteria. Remarkably, (>98 %) TOPO:LauA sustained diverse operational conditions. latter included a broad pH temperature spectrum (3–9 pH; 15–100 °C), solvent-to-feed ratios down to 1:7 (w/w), contaminant concentrations low 0.100 mg/L, rapid equilibration within 1 min, reusability throughout seven cycles without any observable degradation, verified by spectroscopic analysis. also selectivity PFOA, in presence per- polyfluoroalkyl substances (PFAS) or synthetic wastewater matrix simulating municipal wastewater. Moreover, computational quantum chemistry modeling using density functional theory (DFT) COSMO-RS, implemented Materials Studio COSMOtherm software, employed. provided insights into molecular mechanism strong agreement with experimental findings. development this new DES PFOA is critical breakthrough water treatment that surpasses efficacy, sustainability, scalability traditional PFAS conventional methods PFAS, such adsorption membrane separation.

Язык: Английский

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Uncovering the impact of agricultural activities and urbanization on rivers from the Piracicaba, Capivari, and Jundiaí basin in São Paulo, Brazil: A survey of pesticides, hormones, pharmaceuticals, industrial chemicals, and PFAS

Chemosphere, Год журнала: 2023, Номер 341, С. 139954 - 139954

Опубликована: Сен. 2, 2023

Язык: Английский

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Improved Total Oxidizable Precursor Assay for Quantifying Polyfluorinated Compounds Amenable to Oxidative Conversion to Perfluoroalkyl Carboxylic Acids

ACS ES&T Water, Год журнала: 2023, Номер 3(9), С. 2996 - 3003

Опубликована: Авг. 14, 2023

Despite the fact that thousands of perfluoroalkyl and polyfluoroalkyl substances (PFASs) are in widespread commercial use, analytical methods capable quantifying them environmental samples available for less than 100 compounds. The total oxidizable precursor (TOP) assay provides a means unknown PFASs by oxidizing into carboxylates (PFCAs), which readily measured liquid chromatography–tandem mass spectrometry. To improve reproducibility TOP assay, [13C8] perfluorooctane sulfonamide was added to prior oxidation as an efficiency indicator its conversion perfluorooctanoic acid quantified. recovery precursors also improved including analysis ultrashort PFCAs, namely trifluoroacetic perfluoropropyl carboxylic acid, revealed presence precursors. A method distinguishing between branched linear PFCAs integrated enhance ability differentiate produced electrochemical fluorination those fluorotelomerization. In addition potential application forensic studies, reduces uncertainties associated with incomplete or formation not detected standard methods.

Язык: Английский

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Quantification and characterization of PFASs in suspended particulate matter (SPM) of German rivers using EOF, dTOPA, (non-)target HRMS

The Science of The Total Environment, Год журнала: 2023, Номер 885, С. 163753 - 163753

Опубликована: Апрель 29, 2023

Язык: Английский

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The complex ‘PFAS world’ - How recent discoveries and novel screening tools reinforce existing concerns

Current Opinion in Green and Sustainable Chemistry, Год журнала: 2023, Номер 40, С. 100775 - 100775

Опубликована: Фев. 4, 2023

In recent years, high-resolution mass spectrometry (HRMS)-based studies have highlighted an increasingly complex 'PFAS world' and thousands of per- polyfluoroalkyl substances (PFAS) are known today. Major new discoveries were made when previously unexplored PFAS sources or transformation pathways investigated HRMS was combined with other analytical methods. Advances in analysis data treatment pointed to blind spots, extensive suspect screening lists evaluation approaches become available. Research has a vital role making fit for broad application and, considering ongoing discussions supporting grouping PFAS, transitioning society towards fundamentally way regulating, monitoring managing PFAS.

Язык: Английский

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Pollution characteristics and health risk of sixty-five organics in one drinking water system: PAEs should be prioritized for control

Chemosphere, Год журнала: 2024, Номер 350, С. 141171 - 141171

Опубликована: Янв. 9, 2024

Язык: Английский

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Non-target discovery and risk prediction of per- and polyfluoroalkyl substances (PFAS) and transformation products in wastewater treatment systems

Journal of Hazardous Materials, Год журнала: 2024, Номер 476, С. 135081 - 135081

Опубликована: Июль 2, 2024

Язык: Английский

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Examining environmental matrix effects on quantitative non-targeted analysis estimates of per- and polyfluoroalkyl substances

Analytical and Bioanalytical Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Фев. 27, 2025

Язык: Английский

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An overview on human exposure, toxicity, solid-phase microextraction and adsorptive removal of perfluoroalkyl carboxylic acids (PFCAs) from water matrices

Environmental Research, Год журнала: 2023, Номер 231, С. 116102 - 116102

Опубликована: Май 16, 2023

Язык: Английский

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Perfluoroalkyl substances in Romanian wastewater treatment plants: Transfer to surface waters, environmental and human risk assessment

The Science of The Total Environment, Год журнала: 2023, Номер 892, С. 164576 - 164576

Опубликована: Июнь 1, 2023

Язык: Английский

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