Systems and methods for utilizing foam fractionation for contaminate destruction

The combination of continuous foam fractionation and mineralization with reactive oxides provides an effective and cost-efficient solution for removing and destroying PFAS from water sources and contaminated containers, addressing the limitations of existing technologies.

WO2025071695A1 Publication Date: 2025-04-03BATTELLE MEMORIAL INST
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Patent Information

Application Number
PCT/US2024/032061
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-04-22
Filing Date
2024-05-31
Publication Date
2025-04-03

AI Technical Summary

Technical Problem

Existing technologies are ineffective and costly in removing perfluoroalkyl and polyfluoroalkyl substances (PFAS) from water sources, and they pose challenges in handling small-scale contaminations and producing toxic byproducts.

Method used

The use of continuous, multistage foam fractionation processes combined with mineralization using reactive oxides, such as calcium oxide or magnesium oxide, to separate, concentrate, and destroy PFAS compounds, while also addressing the destruction of PFAS in containers like plastic buckets.

Benefits of technology

This method achieves efficient and cost-effective removal and destruction of PFAS, producing an inert effluent stream and minimizing environmental and equipment impact, with the ability to handle both large-scale and small-scale contaminations.

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Abstract

A system for the destruction of PFAS compounds through mineralization with reactive oxides is disclosed herein. The system includes an acquisition unit for obtaining reactive oxides. The system also includes a mixing unit operatively connected to the acquisition unit, where the mixing unit is configured to combine PFAS-contaminated waste with the reactive oxides. The system also includes a high-temperature treatment unit operatively connected to the mixing unit to subject the mixture of PFAS-contaminated waste and reactive oxides to a chemical reaction. The system includes a cooling unit operatively connected to the high-temperature treatment unit. The system includes a waste collection receptacle connected to the cooling unit. The system includes particulate vapor treatment systems, where PFAS-contaminated atmospheres from the high-temperature treatment unit and the cooling unit are captured to prevent emissions to the environment.
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