Iron-activated persulfate oxidation degrades aqueous Perfluorooctanoic acid (PFOA) at ambient temperature

Thien Tran; Leif Abrell; Mark L. Brusseau; Jon Chorover

doi:10.1016/j.chemosphere.2021.130824

Iron-activated persulfate oxidation degrades aqueous Perfluorooctanoic acid (PFOA) at ambient temperature

Thien Tran, Leif Abrell, Mark L. Brusseau, Jon Chorover

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Perfluorooctanoic acid (PFOA, C₈HF₁₅O₂) is an industrial surfactant that is highly resistant to natural breakdown processes such as those mediated by heat, hydrolysis, photolysis, and biodegradation. Many efforts have been developed to breakdown PFOA to less harmful species due to its widespread human exposure and potential toxicity. However, these methods require high temperature or specialized equipment with serious disadvantages of high energy cost for long-term use. We investigated the effectiveness of PFOA degradation by ferrous iron-activated persulfate oxidation (IAPO) under various aqueous geochemical conditions. Approximately 64% of PFOA (initial concentration = 1.64 μmol L⁻¹) was degraded after 4 h under illuminated anoxic conditions at ambient temperature. This degradation rate and magnitude support the potential use of IAPO as a novel inexpensive and environmentally friendly method to remediate PFOA in soil and groundwater.

Original language	English (US)
Article number	130824
Journal	Chemosphere
Volume	281
DOIs	https://doi.org/10.1016/j.chemosphere.2021.130824
State	Published - Oct 2021

Keywords

Emerging contaminants
Environmental remediation
Ferric oxide
Mass spectrometry
PFAS
Perfluorinated compounds

ASJC Scopus subject areas

Environmental Engineering
Chemistry(all)
Environmental Chemistry
Pollution
Public Health, Environmental and Occupational Health
Health, Toxicology and Mutagenesis

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10.1016/j.chemosphere.2021.130824

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title = "Iron-activated persulfate oxidation degrades aqueous Perfluorooctanoic acid (PFOA) at ambient temperature",

abstract = "Perfluorooctanoic acid (PFOA, C8HF15O2) is an industrial surfactant that is highly resistant to natural breakdown processes such as those mediated by heat, hydrolysis, photolysis, and biodegradation. Many efforts have been developed to breakdown PFOA to less harmful species due to its widespread human exposure and potential toxicity. However, these methods require high temperature or specialized equipment with serious disadvantages of high energy cost for long-term use. We investigated the effectiveness of PFOA degradation by ferrous iron-activated persulfate oxidation (IAPO) under various aqueous geochemical conditions. Approximately 64% of PFOA (initial concentration = 1.64 μmol L−1) was degraded after 4 h under illuminated anoxic conditions at ambient temperature. This degradation rate and magnitude support the potential use of IAPO as a novel inexpensive and environmentally friendly method to remediate PFOA in soil and groundwater.",

keywords = "Emerging contaminants, Environmental remediation, Ferric oxide, Mass spectrometry, PFAS, Perfluorinated compounds",

author = "Thien Tran and Leif Abrell and Brusseau, {Mark L.} and Jon Chorover",

note = "Funding Information: The Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory , is supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract No. DE-AC02-76SF00515 . The contributions of ML Brusseau were supported by the NIEHS SRP . We thank Andrew Thomas for collecting XRD data. We thank Dr. Robert Root for his guidance and help for the glovebox experiments. Finally, we want to give great thanks to Mary Kay Amistadi, and Kelsie LaSharr for ICP-MS analysis and their assistances for this study. Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

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month = oct,

doi = "10.1016/j.chemosphere.2021.130824",

language = "English (US)",

volume = "281",

journal = "Chemosphere",

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T1 - Iron-activated persulfate oxidation degrades aqueous Perfluorooctanoic acid (PFOA) at ambient temperature

AU - Tran, Thien

AU - Abrell, Leif

AU - Brusseau, Mark L.

AU - Chorover, Jon

N1 - Funding Information: The Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory , is supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract No. DE-AC02-76SF00515 . The contributions of ML Brusseau were supported by the NIEHS SRP . We thank Andrew Thomas for collecting XRD data. We thank Dr. Robert Root for his guidance and help for the glovebox experiments. Finally, we want to give great thanks to Mary Kay Amistadi, and Kelsie LaSharr for ICP-MS analysis and their assistances for this study. Publisher Copyright: © 2021 Elsevier Ltd

PY - 2021/10

Y1 - 2021/10

N2 - Perfluorooctanoic acid (PFOA, C8HF15O2) is an industrial surfactant that is highly resistant to natural breakdown processes such as those mediated by heat, hydrolysis, photolysis, and biodegradation. Many efforts have been developed to breakdown PFOA to less harmful species due to its widespread human exposure and potential toxicity. However, these methods require high temperature or specialized equipment with serious disadvantages of high energy cost for long-term use. We investigated the effectiveness of PFOA degradation by ferrous iron-activated persulfate oxidation (IAPO) under various aqueous geochemical conditions. Approximately 64% of PFOA (initial concentration = 1.64 μmol L−1) was degraded after 4 h under illuminated anoxic conditions at ambient temperature. This degradation rate and magnitude support the potential use of IAPO as a novel inexpensive and environmentally friendly method to remediate PFOA in soil and groundwater.

AB - Perfluorooctanoic acid (PFOA, C8HF15O2) is an industrial surfactant that is highly resistant to natural breakdown processes such as those mediated by heat, hydrolysis, photolysis, and biodegradation. Many efforts have been developed to breakdown PFOA to less harmful species due to its widespread human exposure and potential toxicity. However, these methods require high temperature or specialized equipment with serious disadvantages of high energy cost for long-term use. We investigated the effectiveness of PFOA degradation by ferrous iron-activated persulfate oxidation (IAPO) under various aqueous geochemical conditions. Approximately 64% of PFOA (initial concentration = 1.64 μmol L−1) was degraded after 4 h under illuminated anoxic conditions at ambient temperature. This degradation rate and magnitude support the potential use of IAPO as a novel inexpensive and environmentally friendly method to remediate PFOA in soil and groundwater.

KW - Emerging contaminants

KW - Environmental remediation

KW - Ferric oxide

KW - Mass spectrometry

KW - PFAS

KW - Perfluorinated compounds

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Iron-activated persulfate oxidation degrades aqueous Perfluorooctanoic acid (PFOA) at ambient temperature

Abstract

Keywords

ASJC Scopus subject areas

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