Do PFAS changes in landfill leachate treatment systems correlate with changes in physical chemical parameters?
Abstract
Per- and polyfluoroalkyl substances (PFAS) have been found at relatively elevated concentrations in landfill leachates. Some landfill facilities treat physical-chemical parameters of their leachates using on-site leachate treatment systems before discharge. The objective of this study was to evaluate whether changes in physical-chemical parameters of leachate at on-site treatment systems (including bulk measurements, oxygen demanding components, and metals) were associated with concentration changes in PFAS. Leachates were evaluated at 15 on-site treatment facilities which included pond systems, aeration tanks, powdered activated carbon (PAC), sand filtration, reverse osmosis (RO) and combination treatment processes. Results show that most physical-chemical parameters and PFAS were significantly reduced in RO systems (over 90 %). For pond systems, statistically significant correlations (r s > 0.6, p 26 PFAS changes and the changes in pH, alkalinity, ammonia, and some metals. Significant correlations were also found between ∑ 8 PFAAs precursors changes and specific conductivity (SPC), pH, alkalinity, ammonia, and metals changes. For aeration tank systems, significant correlations (r s > 0.6, p 26 PFAS changes and changes in total dissolved solids and zinc, and between the changes of ∑ 8 PFAAs precursors and field pH. These correlations are believed to be associated with rainfall dilution and precipitation of calcium carbonate and other metals as leachate is introduced to the a…
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Among evaluated treatment systems in previous Florida studies, only reverse osmosis separated over 90% PFAS from the permeate.
“In addition, among evaluated treatment systems, only reverse osmosis separated over 90% PFAS from the permeate (Chen et al., 2022; Zhang et al., 2022).”
From Evaluation of per- and polyfluoroalkyl substances (PFAS) in landfill liquids from Pennsylvania, Colorado, and Wisconsin (2024) · cites this paper as Zhang et al., 2022
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Chen, Y., Zhang, H., Liu, Y., Bowden, J. A., Tolaymat, T. M., Townsend, T. G., & Solo-Gabriele, H. M. (2023) · Chemosphere · doi:10.1016/j.chemosphere.2023.137903 · Cited by 69 · see citing works
Self-citationChen, Y., Zhang, H., Liu, Y., Bowden, J. A., Tolaymat, T. M., Townsend, T. G., & Solo-Gabriele, H. M. (2022) · Waste Management · doi:10.1016/j.wasman.2022.08.024 · Cited by 54 · see citing works
Self-citationZhang, H., Chen, Y., Liu, Y., Bowden, J. A., Tolaymat, T. M., Townsend, T. G., & Solo-Gabriele, H. M. (2023) · Chemosphere · doi:10.1016/j.chemosphere.2023.138541 · Cited by 31 · see citing works
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Self-citation
- Authors
- Zhang, H., Chen, Y., Liu, Y., Bowden, J. A., Townsend, T. G., & Solo-Gabriele, H. M.
- Affiliations
- University of Miami (US)
- University of Florida (US)
- Venue
- Waste Management
- Publisher
- Elsevier BV
- Published
- 2022-09
- Volume
- 151
- Pages
- 49-59
- ISSN
- 0956-053X (ISSN-L)
- OpenAlex
- W4289704532
- Cited by
- 25
- References
- 7
- Citations by year
- 2026: 4 · 2025: 2 · 2024: 5 · 2023: 10 · 2022: 4
- FWCI
- 1.86
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- Waste Management (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Environmental Science › Environmental Chemistry › Per- and polyfluoroalkyl substances research
- Physical Sciences › Environmental Science › Waste Management and Disposal › Landfill Environmental Impact Studies
- Physical Sciences › Environmental Science › Water Science and Technology › Environmental and Analytical Chemistry Studies
- Keywords
- per- and polyfluoroalkyl substances, PFAS, landfill leachate, reverse osmosis, aeration tank, powdered activated carbon, sand filtration, pond systems, physicochemical parameters, rainfall dilution, calcium carbonate precipitation, metals, ammonia, pH, alkalinity, total dissolved solids
- MeSH terms
- Ammonia, Filtration, Fluorocarbons, Water Pollutants, Chemical, Waste Disposal Facilities
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