Methods and systems for electrochemical oxidation of polyfluoroalkyl and perfluoroalkyl contaminants
AssigneeUniversity of Georgia Research Foundation, Inc.
InventorsQingguo Huang, Hui Lin, Junfeng Niu
Life of this patent
Estimating the term…
Abstract
The present disclosure provides methods, electrodes, and systems for electrochemical oxidation of polyfluoroalkyl and perfluroalkyl (PFAS) contaminants using Magnéli phase titanium suboxide ceramic electrodes/membranes. Magnéli phase titanium suboxide ceramic electrodes/membranes can be porous and can be included in reactive electrochemical membrane filtration systems for filtration, concentration, and oxidation of PFASs and other contaminants.
Claims22
A method for electrochemically oxidizing polyfluoroalkyl and perfluoroalkyl substances (PFASs), the method comprising:
- contacting an aqueous composition contaminated with one or more types of PFASs with an electrode comprising one or more metal sub-oxides, wherein the one or more metal sub-oxides is configured to be in electrochemical communication with the aqueous solution;
- and
- supplying electric current to the electrode in an electrochemical cell, whereby the one or more metal sub-oxides electrochemically oxidizes the PFASs to oxidatively degrade the PFASs into mineral components, inorganic components, or both.
A system for electrochemical oxidation of polyfluoroalkyl and perfluoroalkyl substances (PFASs), the system comprising:
- a reservoir for containing an aqueous solution contaminated with PFASs;
- and
- a first electrode comprising one or more metal sub-oxides, wherein the one or more metal sub-oxides is configured to be in electrochemical communication with the aqueous solution in the reservoir,
- wherein the first electrode oxidatively degrades the PFASs to mineral components, inorganic components, or both.
Dependencies are inferred from the claim text.