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/Method And Apparatus To Separate Per-and Polyfluoroalkyl Substances (pfas) From Water Using Colloidal Gas Aphrons (cgas)
Abstract

A method for the decontamination of water containing one or more PFAS, having the steps of generating colloidal gas aphrons (CGAs) by mixing a gas, water, and one or more surfactants together with high shear forces, introducing the CGAs and a PFAS-containing water in an enclosed space where the CGAs move upwards through the water allowing the plurality of CGAs to extract PFAS from the water, and separating the PFAS-containing CGAs from the water in the enclosed space for further treatment or disposal, leaving the water with lower PFAS concentrations in the vessel. The aphrons may be anionic or cationic and created by mixing speeds or surfactant concentration, and treatment may be with gas bubbles to remove PFAS from water gas bubbles or destruction of PFAS without ultrasonic cavitation.

Full Text

What is claimed is:

A method for the decontamination of water containing one or more PFAS, having the steps of generating colloidal gas aphrons (CGAs) by mixing a gas, water, and one or more surfactants together with high shear forces, introducing the CGAs and a PFAS-containing water in an enclosed space where the CGAs move upwards through the water allowing the plurality of CGAs to extract PFAS from the water, and separating the PFAS-containing CGAs from the water in the enclosed space for further treatment or disposal, leaving the water with lower PFAS concentrations in the vessel. The aphrons may be anionic or cationic and created by mixing speeds or surfactant concentration, and treatment may be with gas bubbles to remove PFAS from water gas bubbles or destruction of PFAS without ultrasonic cavitation.
Timeline
Filed
03/05/2026
Published
07/09/2026
Granted
Not Available
IPC Codes(6)
C02F 1/58:by removing specified dissolved compounds (using ion-exchange C02F 1/42; softening water C02F 5/00)
C02F 1/00:Treatment of water, waste water, or sewage (take precedence C02F 3/00)
C02F 1/24:by flotation (takes precedence C02F 1/465)