Journal of Contaminant Hydrology, Год журнала: 2024, Номер 267, С. 104451 - 104451
Опубликована: Окт. 25, 2024
Язык: Английский
Environmental Science & Technology, Год журнала: 2025, Номер unknown
Опубликована: Апрель 10, 2025
Perfluorooctanesulfonate (PFOS) migration from vadose zone sources to groundwater is determined by multiple interfacial retention processes and their dependency on hydrochemistry. This study investigates the impact of air-water mineral-water PFOS transport under different hydrochemical conditions assess adsorption magnitudes feedback dynamics as a function ionic strength. Flow-through experiments were conducted in unsaturated quartz goethite-coated sands equilibrated with background electrolyte concentrations distinguish between goethite-water contributions retardation. Measurements breakthrough curves at column outlets allowed tracking differences spatio-temporal evolution plumes two porous media. Process-based reactive simulations, incorporating thermodynamic framework mass-action reactions accounting for processes, quantitative interpretation physical geochemical processes. Experimental modeling results reveal that multiprocess causes nonideal transport, plume retardation mass transfer phases relative contribution individual electrostatic interplay driven solution counterions. These findings illuminate sorption emphasize need simulators implementing interdependent influenced water chemistry conditions.
Язык: Английский
Процитировано
0
Analytical and Bioanalytical Chemistry, Год журнала: 2025, Номер unknown
Опубликована: Май 12, 2025
Язык: Английский
Процитировано
0
Sustainability, Год журнала: 2024, Номер 16(11), С. 4745 - 4745
Опубликована: Июнь 2, 2024
Municipal solid waste (MSW) is projected to rise 3.4 billion tonnes by 2050, with only 33% undergoing environmentally friendly management practices. Achieving a circular economy involves sustainable approaches, among which diverting from landfills composting plays crucial role. However, many of the products society uses and discards in MSW daily contain per- polyfluoroalkyl substances (PFAS), raising concerns that composts may inadvertently introduce PFAS into environment, posing significant challenge environmental sustainability. have been detected compost at concentrations ranging between 1.26–11.84 µg/kg. Composts are therefore source contamination, risks human ecosystem health. Impactful technologies required for remediation during process. This review examines process as organic technology, examining various systems employed, quality, uses, particularly emphasising posed contamination. The provides novel insights possible technologies. A comprehensive understanding origin, fate, transformation lacking, creating substantial knowledge gaps regarding inputs processes contributing most accumulation final product. Addressing these future studies minimising discharge environment developing an effective approach. highlights urgent need innovative solutions mitigate contamination importance advancing research technology achieve objectives.
Язык: Английский
Процитировано
3
The Science of The Total Environment, Год журнала: 2025, Номер 984, С. 179708 - 179708
Опубликована: Май 24, 2025
We evaluated the in situ occurrence and soil-water distribution of 75 anionic, zwitterionic, cationic per- polyfluoroalkyl substances (PFAS) soils from five field experimental sites distributed different climatic regions France. Four received agronomical doses organic waste products (OWPs, ∼5-10 t/ha per application) with repeated inputs between 1974 1996 (2 historical sites) 1998-2018 on-going sites), while one site about two-fold larger amounts. Control without OWP application had detectable yet low PFAS levels, Σ75PFAS remaining most cases below 1 μg/kg. Soils amended municipal sludge or urban composts exhibited largest increase relative to controls (∼2-20 μg/kg), receiving biowaste displaying lowest (∼2 μg/kg). In cases, increased significantly time. While perfluorooctane sulfonate (PFOS) typically dominated profiles sludge-amended soils, other prevalent classes varied years: older also anionic electrochemical fluorination-derived precursors (e.g., EtFOSAA PFOSAmS), prevalence short-chain perfluoroalkyl carboxylates (PFCAs) (3 phosphinates (1 site). Interestingly, 6:2 fluorotelomer sulfonamidopropyl betaine (6:2 FTAB), a major zwitterionic precursor found French sludge, was only detected at levels indicating its transformation degradation products. Leaching waters depth 45 cm plots high PFCAs (Mean C3-C5: 120-160 ng/L; Max 900-1600 ng/L), suggesting that land applied containing PFCA are important contributors long-term groundwater contamination.
Язык: Английский
Процитировано
0
Опубликована: Май 21, 2024
We combined and correlated non-target screening (NTS) features extractable organic fluorine (EOF) data for PFAS analysis in environmental samples. Soils, sediments, ashes from different locations (Germany, France, Lithuania) (n=34) were extracted analyzed via liquid chromatography-high-resolution mass spectrometry (LC-HRMS) high resolution-continuum source-graphite furnace molecular absorption (HR-CS-GFMAS). NTS feature prioritization based on the to carbon (m/C) defect (MD/C) ratio was applied discriminate potential common co-extracted matrix. Our results show a correlation between quantitative EOF with prioritized number (R2 = 0.87, rPearson 0.93) as well total peak area of 0.97, 0.98) while commonly MD-ranges filtering showed much weaker EOF. The observed highly significant correlations highlight that MD/C-m/C is associated good indication overall burden evidenced by Also, semi-quantitative can be PFAS-specific shown vs. areas. indicate lowly fluorinated compounds negligible mostly composed higher substances. recommend further investigation unique complementary combination screening.
Язык: Английский
Процитировано
2
Trends in Environmental Analytical Chemistry, Год журнала: 2024, Номер unknown, С. e00242 - e00242
Опубликована: Окт. 1, 2024
Язык: Английский
Процитировано
2
Environmental Sciences Europe, Год журнала: 2024, Номер 36(1)
Опубликована: Март 28, 2024
Abstract In response to the growing concern over PFAS contamination, employing models simulate behavior in environment becomes necessary. This facilitates evaluating risks tied leaching into groundwater, adsorption soil, plant uptake, entry food chain, and conversion of precursors persistent PFAS. We utilized MACRO model 6:2 diPAP 8:2 using data from a 2-year lysimeter experiment, key compound parameters were optimized via caRamel evolutionary algorithm. assumed that transformation both stable PFAAs is influenced by temperature soil moisture, similar pesticide degradation microorganisms. Results reveal accurately represents transformation, leaching, retention, uptake products. A comparison with lab-based column study supports slower natural precursors, affirming our modeling approach. Temperature moisture could indicate worst-case scenario for product groundwater occur during mild summer moderate evapotranspiration heavy rainfall. Plant involves multiple elements: availability root zone depends on prior or presence. Increased favors combined temperatures high enough biotransformation. The calculation moisture-based rates was adopted directly MACRO. It recommended further investigate these effects validate possibly modify them.
Язык: Английский
Процитировано
1
Опубликована: Май 10, 2024
We combined and correlated non-target screening (NTS) features extractable organic fluorine (EOF) data for PFAS analysis in environmental samples. Soils, sediments, ashes from different locations (Germany, France, Lithuania) (n=34) were extracted analyzed via liquid chromatography-high-resolution mass spectrometry (LC-HRMS) high resolution-continuum source-graphite furnace molecular absorption (HR-CS-GFMAS). NTS feature prioritization based on the to carbon (m/C) defect (MD/C) ratio was applied discriminate potential common co-extracted matrix. Our results show a correlation between quantitative EOF with prioritized number (R2 = 0.87, rPearson 0.93) as well total peak area of 0.97, 0.98) while commonly MD filtering showed no EOF. The observed highly significant correlations highlight that MD/C-m/C is associated good indication overall burden evidenced by Also, semi-quantitative can be PFAS-specific shown vs. areas. indicate lowly fluorinated compounds negligible mostly composed higher substances. recommend further investigation unique complementary combination screening.
Язык: Английский
Процитировано
1
Groundwater Monitoring & Remediation, Год журнала: 2024, Номер 44(4), С. 38 - 52
Опубликована: Июль 15, 2024
Abstract Per‐ and polyfluoroalkyl substances (PFAS) are persistent in the environment due to their chemical stability can spread quickly a lake system mixing. Passive samplers allow for time‐weighted average concentration monitoring ability detect low concentrations, which difficult measure with conventional grab sampling. This study demonstrates feasibility of deploying both ceramic dosimeters Sediment Bed Flux Meters (SBPFMs) assess time integrated PFAS concentrations fluxes, respectively, at historically contaminated near Baden‐Baden, Germany. Long‐term surface water samples resulted detection PFBA, PFPeA, PFHxA, PFHpA, PFOA, PFNA, PFDA, PFBS, PFHxS, PFOS total approximately 1 μg/L. Dosimeters were deployed 66 126 d, resulting detected ranging from 250 380 ng/L 120 460 ng/L, respectively. The d deployment whereas additionally PFUnDA, PFDoDA, PFTeDA, PFPeS, PFOS, PFNS, PFDS. SBPFMs PFUnA, PFTrDA, PFBS determination mass discharge 5.6 g/d into lake. Overall, more sensitive than detecting be used better understand spatial distribution system.
Язык: Английский
Процитировано
1
Groundwater Monitoring & Remediation, Год журнала: 2024, Номер 44(3), С. 61 - 75
Опубликована: Июнь 1, 2024
Abstract Soil microbiome changes and generation rates of per‐ polyfluoroalkyl substances (PFAS) precursors were studied in a contaminated agricultural field using combination laboratory batch microcosm studies. 16S rRNA gene amplicon sequencing was used to track how microbial community composition changed over time, while perfluoroalkyl acids (PFAA) quantified incubations combined with the direct total oxidizable precursor (dTOP) assay. The study site Brilon‐Scharfenberg, North Rhine‐Westphalia, Germany, has PFAS contamination topsoil (0 30 cm) originating from compost. Generation rate constants these short‐chain PFAA estimated (0.12 0.75 1/year) higher but similar fields (0.05 0.22 1/year). Long‐term mass discharge data (2009 2023) suggest that at least 60 years are needed remove 99.99% their precursors. revealed major impact on biodiversity soil microorganisms, batch‐incubated soils showing richness diversity indexes than control soils. However, most impacts occurred lower taxonomical ranks did not seem have prominent overall structure autochtonous communities where produced accumulated. Overall, our findings demonstrate well‐controlled aerobic test results dTOP assay suitable approach for estimating rates. Additionally, research suggests complete removal will take decades.
Язык: Английский
Процитировано
1