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, Journal Year: 2024, Volume and Issue: 495, P. 153668 - 153668

Published: July 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.

Language: Английский

---

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

Analytical and Bioanalytical Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 27, 2025

Language: Английский

---

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, Journal Year: 2023, Volume and Issue: 341, P. 139954 - 139954

Published: Sept. 2, 2023

Language: Английский

---

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

ACS ES&T Water, Journal Year: 2023, Volume and Issue: 3(9), P. 2996 - 3003

Published: Aug. 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.

Language: Английский

---

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, Journal Year: 2023, Volume and Issue: 885, P. 163753 - 163753

Published: April 29, 2023

Language: Английский

---

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

Current Opinion in Green and Sustainable Chemistry, Journal Year: 2023, Volume and Issue: 40, P. 100775 - 100775

Published: Feb. 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.

Language: Английский

---

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

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 476, P. 135081 - 135081

Published: July 2, 2024

Language: Английский

---

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

Chemosphere, Journal Year: 2024, Volume and Issue: 350, P. 141171 - 141171

Published: Jan. 9, 2024

Language: Английский

---

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

Environmental Research, Journal Year: 2023, Volume and Issue: 231, P. 116102 - 116102

Published: May 16, 2023

Language: Английский

---

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

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 892, P. 164576 - 164576

Published: June 1, 2023

Language: Английский

---