Cited by 247Per- and polyfluoroalkyl substances researchFluoride Effects and RemovalChemical Analysis and Environmental Impact

Comparison of the sorption behaviors and mechanisms of perfluorosulfonates and perfluorocarboxylic acids on three kinds of clay minerals

Zhao, Lixia, Bian, Jingna, Zhang, Yahui, Zhu, Lingyan, Liu, Zhengtao·2014·Chemosphere

Abstract

The sorption of four perfluoroalkyl acids (PFAAs) [perfluorooctane sulfonate (PFOS), perfluorohexane sulfonate (PFHxS), perfluorooctanoic acid (PFOA) and perfluorohexanoic acid (PFHxA)] on three typical minerals [montmorillonite (MM), kaolinite (KL) and hematite (HM)] was studied. The sorption of PFOS and PFHxS was much stronger than PFOA and PFHxA. The sorption of each PFAA on the minerals followed an order of HM>KL>MM, even though MM was positively while KL and HM were negatively charged, implying that the sorption is driven by some other interactions besides electrostatic attraction. The sorption decreased with an increase in pH and a decrease in ionic strength of the solution, and their impacts on PFOS were much stronger than other three PFAAs. Surface complexing and hydrogen-bonding could make great contributions to the sorption of PFOS on the minerals. The results are important for understanding the transport and fate of PFAAs in sediment and ground water.

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Crossref · 10.1016/j.chemosphere.2014.03.098

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  • An increase in protonation of the sediment surface when the surrounding solution is at a low pH leads to a strong electrostatic attraction between the sediment surface and anionic PFAS.

    “An increase in protonation of the sediment surface when the surrounding solution (water) is at a low pH leads to a strong electrostatic attraction between the sediment surface and anionic PFAS (Zhao et al., 2014).”

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Authors
Zhao, L., Bian, J., Zhang, Y., Zhu, L., & Liu, Z.
Affiliations
  • Nankai University (CN)
  • Chinese Research Academy of Environmental Sciences (CN)
Corresponding author
Zhu, Lingyan
Venue
Chemosphere
Publisher
Elsevier BV
Published
2014-11
Volume
114
Pages
51-58
ISSN
0045-6535 (ISSN-L)
OpenAlex
W2083939576
Cited by
247
References
41
Citations by year
2026: 34 · 2025: 35 · 2024: 31 · 2023: 23 · 2022: 33 · 2021: 21 · 2020: 20 · 2019: 14 · 2018: 10 · 2017: 9 · 2016: 10 · 2015: 6 · 2014: 1
FWCI
6.59
Type
journal article
Language
en
Open access
closed
Locations
  • Chemosphere (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Natural Science Foundation of China (21077060, 21277077, 21325730)
  • Ministry of Education of the People's Republic of China (20130031130005)
  • Ministry of Environmental Protection (201009026)
  • Tianjin Science and Technology Committee (13JCZDJC35900)
  • Fundamental Research Funds for the Central Universities
Topics
  • Physical Sciences › Environmental Science › Environmental Chemistry › Per- and polyfluoroalkyl substances research
  • Physical Sciences › Environmental Science › Water Science and Technology › Fluoride Effects and Removal
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Chemical Analysis and Environmental Impact
Keywords
perfluoroalkyl acids, PFOS, PFHxS, perfluorooctanoic acid, perfluorohexanoic acid, sorption mechanism, clay minerals, montmorillonite, kaolinite, hematite, surface complexation, hydrogen bonding, pH effect, ionic strength, groundwater contaminant transport
MeSH terms
Clay, Adsorption, Aluminum Silicates, Bentonite, Caproates, Caprylates, Ferric Compounds, Fluorocarbons, Hydrogen Bonding, Kaolin, Osmolar Concentration, Alkanesulfonic Acids, Static Electricity

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