Production of perfluoroalkyl acids (PFAAs) from precursors in contaminated agricultural soils: Batch and leaching experiments

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 902, P. 166555 - 166555

Published: Aug. 24, 2023

Language: Английский

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Spatial distribution, compositional characteristics, and source apportionment of legacy and novel per- and polyfluoroalkyl substances in farmland soil: A nationwide study in mainland China

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 470, P. 134238 - 134238

Published: April 8, 2024

Language: Английский

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Anaerobic biodegradation of perfluorooctane sulfonate (PFOS) and microbial community composition in soil amended with a dechlorinating culture and chlorinated solvents

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 932, P. 172996 - 172996

Published: May 6, 2024

Perfluorooctane sulfonate (PFOS), one of the most frequently detected per- and polyfluoroalkyl substances (PFAS) occurring in soil, surface water, groundwater near sites contaminated with aqueous film-forming foam (AFFF), has proven to be recalcitrant many destructive remedies, including chemical oxidation. We investigated potential utilize microbially mediated reduction (bioreduction) degrade PFOS other PFAS through addition a known dehalogenating culture, WBC-2, soil obtained from an AFFF-contaminated site. A substantial decrease total mass (soil water) was observed microcosms amended WBC-2 chlorinated volatile organic compound (cVOC) co-contaminants - 46.4 ± 11.0 % removal over 45-day experiment. In contrast, perfluorooctanoate (PFOA) 6:2 fluorotelomer (6:2 FTS) concentrations did not same microcosms. The low or non-detectable metabolites full analyses, after application oxidizable precursor assay, indicated that defluorination occurred non-fluorinated compounds ultrashort-chain PFAS. Nevertheless, additional research on degradation pathways is needed. Population abundances dehalorespirers change during experiment, making their association unclear. An increased abundance sulfate reducers genus Desulfosporosinus (Firmicutes) Sulfurospirillum (Campilobacterota) removal, likely linked initiation biodegradation by desulfonation. These results have important implications for development situ bioremediation methods advancing knowledge natural attenuation processes.

Language: Английский

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Multidimensional simulation of PFAS transport and leaching in the vadose zone: Impact of surfactant-induced flow and subsurface heterogeneities

Advances in Water Resources, Journal Year: 2021, Volume and Issue: 155, P. 104015 - 104015

Published: Aug. 8, 2021

Language: Английский

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Comparison of Zn–Al and Mg–Al layered double hydroxides for adsorption of perfluorooctanoic acid

Chemosphere, Journal Year: 2021, Volume and Issue: 287, P. 132297 - 132297

Published: Sept. 18, 2021

Language: Английский

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