Australia-wide assessment of perfluoroalkyl substances (PFASs) in landfill leachates

Gallen, C., Drage, D., Eaglesham, G., Grant, S., Bowman, M. and Mueller, J. F. (2017) Australia-wide assessment of perfluoroalkyl substances (PFASs) in landfill leachates. Journal of Hazardous Materials, 331 132-141. doi:10.1016/j.jhazmat.2017.02.006

Author Gallen, C.
Drage, D.
Eaglesham, G.
Grant, S.
Bowman, M.
Mueller, J. F.
Title Australia-wide assessment of perfluoroalkyl substances (PFASs) in landfill leachates
Journal name Journal of Hazardous Materials   Check publisher's open access policy
ISSN 1873-3336
Publication date 2017-06-05
Year available 2017
Sub-type Article (original research)
DOI 10.1016/j.jhazmat.2017.02.006
Open Access Status Not yet assessed
Volume 331
Start page 132
End page 141
Total pages 10
Place of publication Amsterdam, Netherlands
Publisher Elsevier BV
Language eng
Abstract Leachate from 27 landfills was analysed for nine perfluoroalkyl substances (PFASs). Five PFASs were detected ubiquitously, with perfluorohexanoate (PFHxA) the predominant PFAS (mean 1700 ng/L; range 73–25,000 ng/L). Despite the complexity of landfill-specific factors, some general trends in PFAS concentrations were observed. Mean concentrations of eight PFASs were higher in operating landfills (or landfill cells) accepting primarily municipal waste, compared to closed municipal landfills. Landfills accepting primarily construction and demolition wastes produced leachate that had higher mean PFAS concentrations than municipal landfills. Younger landfills appeared to have a higher burden of waste containing PFASs (or their precursors), as significant relationships (p < 0.05) were observed between selected PFAS concentrations and landfill age. Increasing pH and total organic carbon (TOC) in leachate were associated with increased concentrations of several PFASs. Eight landfills discharged leachate to wastewater treatment plants (WWTPs). Estimated masses of PFASs discharged reached a maximum of 62 g annually (PFHxA), with a national estimate reaching 31 kg (PFHxA) annually. The practise of treating leachate at WWTPs allows redistribution of PFASs between the solid and liquid waste streams, although the contribution of leachate to the total load of PFASs entering WWTPs is minor compared to domestic waste water sources.
Keyword Landfill
Perfluoroalkyl substances (PFASs)
Persistent organic pollutants (POPs)
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
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