Electrothermal mineralization of per- and polyfluoroalkyl substances for soil remediation.
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
20 Jul 2024
20 Jul 2024
Historique:
received:
20
11
2023
accepted:
19
06
2024
medline:
21
7
2024
pubmed:
21
7
2024
entrez:
20
7
2024
Statut:
epublish
Résumé
Per- and polyfluoroalkyl substances (PFAS) are persistent and bioaccumulative pollutants that can easily accumulate in soil, posing a threat to environment and human health. Current PFAS degradation processes often suffer from low efficiency, high energy and water consumption, or lack of generality. Here, we develop a rapid electrothermal mineralization (REM) process to remediate PFAS-contaminated soil. With environmentally compatible biochar as the conductive additive, the soil temperature increases to >1000 °C within seconds by current pulse input, converting PFAS to calcium fluoride with inherent calcium compounds in soil. This process is applicable for remediating various PFAS contaminants in soil, with high removal efficiencies ( >99%) and mineralization ratios ( >90%). While retaining soil particle size, composition, water infiltration rate, and cation exchange capacity, REM facilitates an increase of exchangeable nutrient supply and arthropod survival in soil, rendering it superior to the time-consuming calcination approach that severely degrades soil properties. REM is scaled up to remediate soil at two kilograms per batch and promising for large-scale, on-site soil remediation. Life-cycle assessment and techno-economic analysis demonstrate REM as an environmentally friendly and economic process, with a significant reduction of energy consumption, greenhouse gas emission, water consumption, and operation cost, when compared to existing soil remediation practices.
Identifiants
pubmed: 39033169
doi: 10.1038/s41467-024-49809-6
pii: 10.1038/s41467-024-49809-6
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
6117Subventions
Organisme : United States Department of Defense | United States Air Force | AFMC | Air Force Office of Scientific Research (AF Office of Scientific Research)
ID : FA9550-22-1-0526
Organisme : United States Department of Defense | United States Army | US Army Corps of Engineers | Engineer Research and Development Center (U.S. Army Engineer Research and Development Center)
ID : W912HZ-21-2-0050
Informations de copyright
© 2024. The Author(s).
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