PFAS chemical destruction process by alkoxides in water

The use of an alcohol-water mixture with potassium hydroxide in a batch reactor effectively destroys PFAS, converting organic fluorine to inorganic fluoride and minimizing harmful emissions, addressing the inefficiencies and environmental risks of current disposal methods.

WO2026148097A1PCT designated stage Publication Date: 2026-07-09PERMA FIX ENVIRONMENTAL SERVICES INC
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
PERMA FIX ENVIRONMENTAL SERVICES INC
Filing Date
2025-12-31
Publication Date
2026-07-09

AI Technical Summary

Technical Problem

Current methods for disposing of per- and polyfluoroalkyl substances (PFAS) are inefficient, leading to incomplete destruction, potential environmental contamination, and the formation of harmful byproducts, with incineration posing risks of secondary air and soil pollution and unknown byproduct formation.

Method used

A method using an alcohol-water mixture with potassium hydroxide (aqueous alkoxide base) in a batch reactor to chemically destroy PFAS, converting organic fluorine to inorganic fluoride with reduced emissions of harmful gases, followed by incineration of the defluorinated waste product.

Benefits of technology

Achieves nearly complete destruction of PFAS with minimal harmful emissions, producing inorganic fluoride and reducing the formation of gaseous PFCs, thus minimizing environmental impact.

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Abstract

A system and method for chemically destroying, degrading and incinerating a fluorocarbon or fluorinated material, such as perfluoroalkyl and polyfluoroalkyl substances (PFAS), with reduced emissions of gaseous PFC is provided. The method includes mixing the fluorinated material with an aqueous alkoxide base in a batch reactor to form a suspension. The PFAS can be provided by AFFF. The reaction mixture is heated to a temperature ranging from about 25ºC to about 400ºC for about 0.5 hours to about 240 hours to defluorinated fluorocarbons in the PFAS and produce a defluorinated waste product. More specifically, the method converts organic fluorine present in the PFAS to inorganic fluoride. Thus, the defluorinated waste product can be incinerated with reduced emissions of harmful gaseous PFCs.
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