US Patent Issued to Worcester Polytechnic Institute on Jan. 20 for "Acid wash of red mud (bauxite residue)" (Massachusetts Inventors)

ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,528,709, issued on Jan. 20, was assigned to Worcester Polytechnic Institute (Worcester, Mass.).

"Acid wash of red mud (bauxite residue)" was invented by Himanshu Tanvar (Worcester, Mass.) and Brajendra Mishra (Worcester, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Bauxite residue recovery includes mixing a solution of hydrochloric acid (HCL) according to a predetermined concentration, and adding the HCL solution to a quantity of raw red mud recovered from industrial operations as waste material. The highly alkaline property of the bauxite residue, commonly known as red mud is at least partially neutralized from the HCL, and makes the resulting ...