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Supercritical water oxidation for the destruction of spent media wastes generated from PFAS treatment.

Publication ,  Journal Article
Chiang, S-YD; Saba, M; Leighton, M; Ballenghien, D; Hatler, D; Gal, J; Deshusses, MA
Published in: Journal of hazardous materials
October 2023

Granular activated carbon (GAC) and anion exchange resin (AIX) have been successfully demonstrated to remove per- and polyfluoroalkyl substances (PFAS) from contaminated water and wastewater. These treatment technologies, when applied for PFAS removal, generate spent media loaded with a high mass of PFAS requiring further treatment and disposal. This project is the first study on the use of supercritical water oxidation (SCWO) to destroy both the spent media and the PFAS adsorbed onto it. One sample of spent GAC and one sample of spent AIX were collected from full-scale groundwater remediation systems treating PFAS. A second spent AIX sample was collected from a mobile PFAS treatment unit. The total PFAS concentrations reported in the GAC, AIX and second AIX feedstock slurries were 0.21 mg/kg, 1.3 mg/kg and 0.9 mg/kg, respectively. Each feedstock was processed separately in a one (1) wet metric ton per day tubular reactor SCWO system. The study demonstrated that SCWO is a very effective PFAS destruction technology for spent GAC and AIX, derived from water remediation systems treating PFAS. The spent media were completely mineralized to water, carbon dioxide (CO2) and a negligible amount of residual minerals. Total target PFAS compound concentrations in the SCWO system effluents after treating spent GAC, AIX and second AIX feedstocks were 548, 77 and 796 ng/L, respectively. The results indicated that the percentage elimination of perfluorocarboxylic acids (PFCAs) was better than that of perfluosulfonic acids (PFSAs) and long-chain PFAS elimination was better than short-chain PFAS.

Duke Scholars

Published In

Journal of hazardous materials

DOI

EISSN

1873-3336

ISSN

0304-3894

Publication Date

October 2023

Volume

460

Start / End Page

132264

Related Subject Headings

  • Strategic, Defence & Security Studies
  • 41 Environmental sciences
  • 40 Engineering
  • 34 Chemical sciences
  • 09 Engineering
  • 05 Environmental Sciences
  • 03 Chemical Sciences
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Chiang, S.-Y., Saba, M., Leighton, M., Ballenghien, D., Hatler, D., Gal, J., & Deshusses, M. A. (2023). Supercritical water oxidation for the destruction of spent media wastes generated from PFAS treatment. Journal of Hazardous Materials, 460, 132264. https://doi.org/10.1016/j.jhazmat.2023.132264
Chiang, Sheau-Yun Dora, Matthew Saba, Macon Leighton, David Ballenghien, Douglas Hatler, Justin Gal, and Marc A. Deshusses. “Supercritical water oxidation for the destruction of spent media wastes generated from PFAS treatment.Journal of Hazardous Materials 460 (October 2023): 132264. https://doi.org/10.1016/j.jhazmat.2023.132264.
Chiang S-YD, Saba M, Leighton M, Ballenghien D, Hatler D, Gal J, et al. Supercritical water oxidation for the destruction of spent media wastes generated from PFAS treatment. Journal of hazardous materials. 2023 Oct;460:132264.
Chiang, Sheau-Yun Dora, et al. “Supercritical water oxidation for the destruction of spent media wastes generated from PFAS treatment.Journal of Hazardous Materials, vol. 460, Oct. 2023, p. 132264. Epmc, doi:10.1016/j.jhazmat.2023.132264.
Chiang S-YD, Saba M, Leighton M, Ballenghien D, Hatler D, Gal J, Deshusses MA. Supercritical water oxidation for the destruction of spent media wastes generated from PFAS treatment. Journal of hazardous materials. 2023 Oct;460:132264.
Journal cover image

Published In

Journal of hazardous materials

DOI

EISSN

1873-3336

ISSN

0304-3894

Publication Date

October 2023

Volume

460

Start / End Page

132264

Related Subject Headings

  • Strategic, Defence & Security Studies
  • 41 Environmental sciences
  • 40 Engineering
  • 34 Chemical sciences
  • 09 Engineering
  • 05 Environmental Sciences
  • 03 Chemical Sciences