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20251017232104.0 |
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250926s2025 xx |||||o 00| ||eng c |
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|a 10.1016/j.wasman.2025.115154
|2 doi
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|a pubmed25n1601.xml
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|a (DE-627)NLM393062856
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|a (NLM)40997525
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|a (PII)S0956-053X(25)00565-3
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Saha, Biraj
|e verfasserin
|4 aut
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| 245 |
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|a Foam fractionation of PFAS from landfill leachate using a membrane electrochemical reactor
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|c 2025
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 15.10.2025
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|a Date Revised 15.10.2025
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2025 Elsevier Ltd. All rights reserved.
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|a The effective removal of PFAS from chemically complex landfill leachate remains a significant challenge for the solid waste industry. To address this, a membrane electrochemical reactor (MER) was investigated for PFAS removal from landfill leachate at low pH (∼2.0) in the anode chamber. The MER achieved 95.6 % PFAS removal from landfill leachate within seven hours of operation, with 98.3 % of perfluorosulfonic acids (PFSA) and 85.5 % of perfluorocarboxylic acids (PFCA) removed from the leachate. Short-chain PFSAs (C ≤ 6, 92.5-99.1 %) were removed more efficiently than PFCAs (C ≤ 6, 80.8-90 %), possibly due to their stronger affinity for the air-water interface, which enhanced foam-based separation. Long-chain PFAS (C > 6) showed near-complete removal (96.1-100 %). Importantly, PFAS precursors such as fluorotelomer carboxylic acids and perfluoroalkane sulfonyl fluorides were not detected in defoamed leachate, suggesting their removal through both oxidative transformation and foam-phase partitioning in the MER. Simple pH adjustment to 2.0 using concentrated H2SO4, conducted for comparison with the MER, resulted in 83.1 % of PFAS separation into foam and 11.3 % into settled solids. Additionally, short-chain PFAS were separated into foam (59.2-84.7 %) and settled solids (5.7-13 %), while long-chain PFAS showed similar trends with 78.3-86 % in foam and 5.3-18.2 % in settled solids. The addition of 0.1 M NaHCO3 before pH adjustment enhanced foam formation, increasing PFAS separation in foam to 92.5 %. This study highlights MER's effective PFAS removal performance without any solid precipitate generation. Further research should explore the effect of MER operational conditions and leachate-PFAS chemistry on the treatment performance
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|a Journal Article
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|a Chain length
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|a Electrochemical degradation
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|a Forever chemicals
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|a Leachate concentrate
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|a Settled solids
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|a Surfactant property
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|a Water Pollutants, Chemical
|2 NLM
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| 650 |
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|a Fluorocarbons
|2 NLM
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| 650 |
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|a perfluorosulfonic acid
|2 NLM
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| 650 |
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|a 39464-59-0
|2 NLM
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| 650 |
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|a Membranes, Artificial
|2 NLM
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| 650 |
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|a Fluorocarbon Polymers
|2 NLM
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| 700 |
1 |
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|a Yadav, Himani
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Khan, Md Tanbir
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ateia, Mohamed
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Fernando, Sujan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Iskander, Syeed Md
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Waste management (New York, N.Y.)
|d 1999
|g 208(2025) vom: 25. Okt., Seite 115154
|w (DE-627)NLM098197061
|x 1879-2456
|7 nnas
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| 773 |
1 |
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|g volume:208
|g year:2025
|g day:25
|g month:10
|g pages:115154
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| 856 |
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|u http://dx.doi.org/10.1016/j.wasman.2025.115154
|3 Volltext
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