Cost Effective Destruction of Per- and Polyfluoroalkyl Substances from DoD Subsurface Investigation Derived Wastes Using a New Class of Adsorptive Photocatalysts
Abstract
The overall goal of this SEED project was to develop an innovative "Concentrate- and -Destroy" technology for cost-effective degradation of PFAS from DoD's subsurface investigation-derived wastes. The key findings are: 1) three novel adsorptive photocatalysts were synthesized, characterized and tested based on commercially available low-cost materials; 2) The new materials not only offer superior adsorption rate and capacity for PFAS (PFOA and PFOS), but also great photocatalytic degradation and mineralization efficiency; 3) The in situ efficient photodegradation of PFAS also regenerates the materials, allowing for repeated uses of the photocatalysts without chemical regeneration; and 4) Dilute Corexit EC9500A can serve as an effective, environmentally safe extractant for removing PFAS from soil. Based on the compelling preliminary findings, more in-depth follow on studies are warranted to further optimize the new materials and to test the technology under DoD field conditions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 21, 2020
- Accession Number
- AD1134359
Entities
People
- Dongye Zhao
Organizations
- Auburn University