Quantification of In Situ Chemical Reductive Defluorination (ISCRD) of Perfluoroalkyl Acids in Groundwater Impacted by AFFFs
Abstract
At the start of this ER-2426 project, the primary approach to mitigate PFAS transport and contamination of drinking water was sorbents, which came with challenges to effectively capture shorter chain PFAAs. Longevity and regeneration. The primary goal of this project was to identify reductive technologies amenable for in situ destructive remediation of PFAS with PFOS as the initial focus. This research led to the development of a reductive technology using Ni0Fe0 nanoparticles synthesized onto an activated carbon (AC). The technology was demonstrated in batch and 1-D column reactors to transform and mineralize Land br-PFAS with fluoride and sometimes sulfite generation and organic intermediates. All PFAS transformed and mineralized to varying degrees. Additional column studies, which best mimic how well this technology may work in the field either as an in situ permeable reactive barrier, above ground treatment (a reactive GAC rather than just a sorptive GAC) or in situ injection are needed to evaluate further transformation and defluorination at increased residence times.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 23, 2021
- Accession Number
- AD1154408
Entities
People
- Linda S Lee
- Loring Nies
- Victor Medina
Organizations
- Purdue University