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Cited by 163

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Rapid Removal of Poly- and Perfluorinated Compounds from Investigation-Derived Waste (IDW) in a Pilot-Scale Plasma Reactor

Singh, Raj Kamal, Multari, Nicholas, Nau-Hix, Chase, Anderson, Richard H., Richardson, Stephen D., Holsen, Thomas M., Mededovic Thagard, Selma·2019·Environmental Science & Technology

Abstract

A pilot-scale plasma reactor installed into an 8 × 20 ft 2 mobile trailer was used to rapidly and effectively degrade poly- and perfluoroalkyl substances (PFAS) from liquid investigation-derived waste (IDW; development and purge water from monitoring wells) obtained from 13 different site investigations at Air Force installations. In the raw water, numerous PFAS were detected in a wide concentration range (∼10–10 5 ng/L; total oxidizable precursors (TOP) ∼10 2 –10 5 ng/L, total fluorine by combustion ion chromatography ∼10 2 to 5 × 10 6 ng F/L). The concentration of total PFAS (12 perfluorocarboxylic acids (PFCAs) and perfluoroalkyl sulfonates (PFSAs)) in the 13 samples ranged between 2.7 and 1440 μg/L and the concentration of perfluorooctane sulfonate (PFOS) plus perfluorooctanoic acid (PFOA) ranged between 365 and 73700 ng/L. Plasma-based water treatment resulted in rapid perfluoroalkyl acids (PFAAs) removal from 4 L individual IDW samples with faster rates for longer-chain PFCAs ( C ≥ 8) and PFSAs ( C ≥ 6) than for PFCAs and PFSAs of shorter chain length. In 9 of the 13 IDW samples, both PFOS and PFOA were removed to below United States Environmental Protection Agency’s (USEPA’s) health advisory concentration level (HAL) concentrations in <1 min, whereas longer treatment times (up to 50 min) were required for the remaining four IDW samples due to either extremely high solution electrical conductivity, which decreased the plasma–liquid contact area (one IDW sample) or high concentrations of PFAAs and their precursors; the latter was found to be converted to PFAAs during the treatment. Overall, 36–99% of the TOP concentration present in the IDWs was removed during the treatment. There was no effect of non-PFAS co-contaminants on the degradation efficiency. Overall, the results indicate that plasma-based water treatment is a viable technology for the treatment of PFAS-contaminated IDW.

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Metadata

Authors
Singh, R. K., Multari, N., Nau-Hix, C., Anderson, R. H., Richardson, S. D., Holsen, T. M., & Mededovic Thagard, S.
Venue
Environmental Science & Technology
Published
2019-09-03
Volume
53
Issue
19
Pages
11375-11382
ISSN
  • 0013-936X (ISSN-L)
  • 1520-5851
OpenAlex
W2972246824
Cited by
163
References
11
FWCI
6.32
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Rapid Removal of Poly- and Perfluorinated Compounds from Investigation-Derived Waste (IDW) in a Pilot-Scale Plasma Reactor. https://app.cochat.ai/papers/10.1021/acs.est.9b02964
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Singh, R. K., Multari, N., Nau-Hix, C., Anderson, R. H., Richardson, S. D., Holsen, T. M., & Mededovic Thagard, S. (2019). Rapid Removal of Poly- and Perfluorinated Compounds from Investigation-Derived Waste (IDW) in a Pilot-Scale Plasma Reactor. Environmental Science & Technology. https://doi.org/10.1021/acs.est.9b02964

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