Uptake of perfluoroalkyl substances PFOS and PFOA by free-floating hydrophytes Pistia stratiotes L. and Eichhornia crassipes (Mart.) Solms

The phytoremediation potential of floating aquatic plants to accumulate and remove two common PFAS from contaminated water was investigated. Free-floating hydrophytes Eichhornia crassipes and Pistia stratiotes were grown in water spiked with 0.5, 1, or 2 ppm perfluorooctanoic acid (PFOA) or perfluor...

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Bibliographic Details
Published in:	International journal of phytoremediation Vol. 26; no. 9; pp. 1429 - 1438
Main Authors:	Kenyon, Amalia, Masisak, Jessica, Satchwell, Michael, Wu, Jacky, Newman, Lee
Format:	Journal Article
Language:	English
Published:	United States Taylor & Francis 28-07-2024 Taylor & Francis Ltd
Subjects:	Aquatic ecosystems Aquatic plants Eichhornia crassipes Hydrophytes Perfluoro compounds Perfluoroalkyl & polyfluoroalkyl substances Perfluorooctane sulfonic acid perfluorooctanesulfonic acid Perfluorooctanoic acid PFOA PFOS Phytoremediation Pistia stratiotes Plant tissues Roots Shoots Translocation Water pollution perfluorooctanesulfonic acid Eichhornia crassipes Pistia stratiotes perfluorooctanoic acid phytoremediation PFOA PFOS
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Summary:	The phytoremediation potential of floating aquatic plants to accumulate and remove two common PFAS from contaminated water was investigated. Free-floating hydrophytes Eichhornia crassipes and Pistia stratiotes were grown in water spiked with 0.5, 1, or 2 ppm perfluorooctanoic acid (PFOA) or perfluorooctanesulfonic acid (PFOS) for seven days. Both species were able to accumulate PFOA and PFOS in this time frame, with translocation factors (TF) ranging from 0.13 to 0.57 for P. stratiotes and 0.18 to 0.45 for E. stratiotes, respectively. E. crassipes accumulated a greater amount of PFOA and PFOS than P. stratiotes, with 178.9 ug PFOA and 308.5 ug PFOS removed by E. crassipes and 98.9 ug PFOA and 137.8 ug PFOS removed by P. stratiotes at the highest concentrations. Root tissue contained a higher concentration of PFOA and PFOS than shoot tissue in both species, and the concentration of PFOS was generally significantly higher than PFOA in both E. crassipes and P. stratiotes, with concentrations of 15.39 and 27.32 ppb PFOA and 17.41 and 80.62 ppb PFOS in shoots and roots of P. stratiotes and 12.59 and 37.37 ppb PFOA and 39.92 and 83.40 ppb PFOS in shoots and roots of E. crassipes, respectively. Both species may be candidates for further phytoremediation studies in aquatic ecosystems. This study investigates the feasibility of using wetland plants for the phytoremediation of PFAS. Prior published studies examine various plant interactions with PFAS but do not evaluate remediation potential of P. stratiotes.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1522-6514 1549-7879 1549-7879
DOI:	10.1080/15226514.2024.2326906