Cited by 84Per- and polyfluoroalkyl substances researchAdvanced oxidation water treatmentEnvironmental remediation with nanomaterials

Effects of chemical oxidants on perfluoroalkyl acid transport in one-dimensional porous media columns

McKenzie, Erica R., Siegrist, Robert L., McCray, John E., Higgins, Christopher P.·2015·Environmental Science & Technology

Abstract

In situ chemical oxidation (ISCO) is a remediation approach that is often used to remediate soil and groundwater contaminated with fuels and chlorinated solvents. At many aqueous film-forming foam-impacted sites, perfluoroalkyl acids (PFAAs) can also be present at concentrations warranting concern. Laboratory experiments were completed using flow-through one-dimensional columns to improve our understanding of how ISCO (i.e., activated persulfate, permanganate, or catalyzed hydrogen peroxide) could affect the fate and transport of PFAAs in saturated porous media. While the resultant data suggest that standard ISCO is not a viable remediation strategy for PFAA decomposition, substantial changes in PFAA transport were observed upon and following the application of ISCO. In general, activated persulfate decreased PFAA transport, while permanganate and catalyzed hydrogen peroxide increased PFAA transport. PFAA sorption increased in the presence of increased aqueous polyvalent cation concentrations or decreased pH. The changes in contaminant mobility were greater than what would be predicted on the basis of aqueous chemistry considerations alone, suggesting that the application of ISCO results in changes to the porous media matrix (e.g., soil organic matter quality) that also influence transport. The application of ISCO is likely to result in changes in PFAA transport, where the direction (increased or decreased transport) and magnitude are dependent on PFAA characteristics, oxidant characteristics, and site-specific factors.

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Crossref · 10.1021/es503676p

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  • Over the past 15 years, nearly 100 studies examined PFAS sorption by geomedia and geomedia constituents; most used batch methods, while very few used column methods.

    “Over the past 15 years, close to 100 studies have investigated the sorption of PFAS by geomedia and specific constituents of geomedia. Of these, the vast majority have used batch methods to quantify sorption, with only a very few employing column methods”

    From Column versus batch methods for measuring PFOS and PFOA sorption to geomedia (2021) · cites this paper as McKenzie et al., 2015

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Authors
McKenzie, E. R., Siegrist, R. L., McCray, J. E., & Higgins, C. P.
Affiliations
Colorado School of Mines (US)
Corresponding author
Higgins, Christopher P.
Venue
Environmental Science & Technology
Published
2015-01-26
Volume
49
Issue
3
Pages
1681-1689
ISSN
  • 0013-936X (ISSN-L)
  • 1520-5851
OpenAlex
W2314008172
Cited by
84
References
35
Citations by year
2026: 6 · 2025: 7 · 2024: 8 · 2023: 8 · 2022: 12 · 2021: 8 · 2020: 9 · 2019: 8 · 2018: 7 · 2017: 5 · 2016: 5
FWCI
4.17
Type
journal article
Language
en
Open access
closed
Locations
  • Environmental Science & Technology (publishedVersion)
  • PubMed (publishedVersion)
Funders
U.S. Department of Defense (ER-2126)
Topics
  • Physical Sciences › Environmental Science › Environmental Chemistry › Per- and polyfluoroalkyl substances research
  • Physical Sciences › Environmental Science › Water Science and Technology › Advanced oxidation water treatment
  • Physical Sciences › Engineering › Biomedical Engineering › Environmental remediation with nanomaterials
Keywords
perfluoroalkyl acids, in situ chemical oxidation, activated persulfate, permanganate, sorption, aqueous film-forming foam, groundwater contamination, soil remediation, multivalent cations, pH effect, soil organic matter, contaminant mobility
MeSH terms
Fluorocarbons, Hydrogen Peroxide, Hydrogen-Ion Concentration, Oxidation-Reduction, Oxides, Soil, Soil Pollutants, Water Pollutants, Chemical, Porosity, Oxidants, Manganese Compounds, Groundwater

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