Long-term behavior of PFAS in contaminated agricultural soils in Germany

Röhler, Klaus; Haluska, Alexander Arthur; Susset, Bernd; Liu, Binlong; Grathwohl, Peter

doi:10.1016/j.jconhyd.2021.103812

Cited by 58 publications

(36 citation statements)

References 24 publications

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“…While the predicted and actual concentrations of PFOA showed some agreement for soil samples (panel A), the sediment samples (panel B) did not generally agree well, though the predicted concentrations were modeled using the %TOC of representative composite samples from each location. In a recent field study, PFOA has been observed to leach more rapidly versus PFOS in agricultural soils and in a lysimeter test facility . Recent work by Maizel et al demonstrated that PFOA was released in earlier pore volumes of artificial groundwater flowing through AFFF-impacted soils versus PFOS .…”

Section: Resultsmentioning

confidence: 98%

Per- and Polyfluoroalkyl Substances (PFASs) in the Fountain Creek Watershed, Colorado Springs, CO, USA: A Yearlong Investigation of PFAS Levels in Water, Soils, and Sediments

et al. 2022

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Per- and polyfluoroalkyl substance (PFAS) contamination of water resources and impact on affected populations in the southern Colorado Springs metro area have been of research interest since initial reports were announced via local news outlets in 2016. In this study, surface water, soils, and sediments were collected monthly for a full year at eight locations within the Fountain Creek Watershed of Colorado Springs, CO, USA. Using a novel quantitative method, levels of nine PFASs were determined via liquid chromatography tandem mass spectrometry (LC/MS/MS). Mean levels of ∑9PFAS in water were 71.4 ng/L (median 57.9 ng/L) and ranged from 18.1 to 172.3 ng/L. Using these data, logK ow values, and % total organic carbon content, predicted levels of PFASs in soil and sediment samples were modeled. Actual concentrations via LC/MS/MS for PFASs in soils and sediments reflected previously reported metadata for solid samples affected by aqueous film-forming foam use and release. Perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) were detected in most (>87%) soils and all sediment samples. Predicted vs actual concentrations (ng/gdw) of PFOS agreed extremely well for soil and sediment samples in this study, while agreement of predicted vs actual concentrations for PFOA was less robust. This latter observation motivated a follow-up study to assess whether, and to what extent, PFOA levels in affected vegetation at the survey sites.

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Section: Resultsmentioning

confidence: 98%

Per- and Polyfluoroalkyl Substances (PFASs) in the Fountain Creek Watershed, Colorado Springs, CO, USA: A Yearlong Investigation of PFAS Levels in Water, Soils, and Sediments

et al. 2022

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“…Runoff or leaching from biosolid-amended soils can also lead to elevated PFAS levels in receiving waters (Röhler et al 2021). Navarro et al (2018) demonstrated that PFAS transferred from biosolid-amended soil to leachate and runoff water generated by natural rainfall, confirming that leaching is possible.…”

Section: Land Applicationmentioning

confidence: 96%

Per- and Polyfluoroalkyl Substances Presence, Pathways, and Cycling through Drinking Water and Wastewater Treatment

et al. 2022

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“…However, the extremely strong chemical and thermal stability of PFAS is a double-edged sword. PFAS that persist in the environment are mainly stable products, such as perfluorooctane sulfonic acid (PFOS) and perfluorooctanoic acid (PFOA), which are transformed from degradable PFAS . These stable products of PFAS are persistently ubiquitous in soil and water, and they can accumulate in the human body due to their ability to biomagnify in food chains. , PFAS in the human body may cause many diseases, including heart attacks, chronic inflammatory diseases, central nervous system disorders, and cancer, by activating oxidative stress .…”

Section: Introductionmentioning

confidence: 99%

Enhanced Removal of Polyfluoroalkyl Substances by Simple Modified Biochar: Adsorption Performance and Theoretical Calculation

et al. 2023

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To cope with the widespread polyfluoroalkyl substance (PFAS) pollution in the global aquatic environment, this study prepared an acid-modified biochar adsorbent derived from sludge with satisfactory performance. The theoretical maximum adsorption capacities of the adsorbent for perfluorooctane sulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) were determined to be 72.17 and 45.88 mg·g–1, respectively. The theoretical calculation of the adsorption of biochar surface functional groups with PFOS and PFOA was first performed in this study, and the mechanism of the adsorption process was inferred with a combination of experimental results and redundancy analysis. The adsorption mechanism is composed mainly of the following three aspects: (I) electrostatic interaction between the positively charged biochar and the deprotonated PFAS; (II) hydrogen bonding between anionic species of PFAS and functional groups; and (III) hydrophobic interaction between long-chain hydrophobic PFAS and biochar. Electrostatic interaction plays a major role in the three main adsorption mechanisms under acidic media. Meanwhile, different functional groups have different adsorption energies for PFAS, and CO has the highest adsorption energy. The findings in this work could provide great insights into the adsorption of PFAS on modified biochar as an environmentally friendly adsorbent to promote resource reuse, improve water quality, and ensure human health.

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Long-term behavior of PFAS in contaminated agricultural soils in Germany

Cited by 58 publications

References 24 publications

Per- and Polyfluoroalkyl Substances (PFASs) in the Fountain Creek Watershed, Colorado Springs, CO, USA: A Yearlong Investigation of PFAS Levels in Water, Soils, and Sediments

Per- and Polyfluoroalkyl Substances (PFASs) in the Fountain Creek Watershed, Colorado Springs, CO, USA: A Yearlong Investigation of PFAS Levels in Water, Soils, and Sediments

Per- and Polyfluoroalkyl Substances Presence, Pathways, and Cycling through Drinking Water and Wastewater Treatment

Enhanced Removal of Polyfluoroalkyl Substances by Simple Modified Biochar: Adsorption Performance and Theoretical Calculation

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