ALEXANDRIA, Va., March 24 -- United States Patent no. 12,584,230, issued on March 24.
"Electrolytic recycling system of waste phosphogypsum and method" was invented by Joshua Jun-Ren Tang (Gaithersburg, Md.) and Alex Wang (Gaithersburg, Md.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A chemical process utilizing electrodialysis in a flow cell with cation and anion selective ion exchange membranes to produce sulfuric acid from phosphogypsum and gypsum, and centrifugal separation to reduce radioactive phosphogypsum into a liquid slurry (mainly calcium hydroxide) capable of sequestration. Reactants used are water, phosphogypsum or gypsum, and sodium carbonate."
The patent was filed on Jan. 2, 2025, under Ap...