US Patent Issued to L'Air Liquide Societe Anonyme pour l'Etude et Georges Claude on May 20 for "Method for treating an industrial effluent charged with aluminium using CO 2" (French Inventors)

ALEXANDRIA, Va., June 16 -- United States Patent no. 12,304,828, issued on May 20, was assigned to L'Air Liquide Societe Anonyme pour l'Etude et Georges Claude (Paris).

"Method for treating an industrial effluent charged with aluminium using CO 2" was invented by Bruno Alban (Massy, France), Dominique Bras (Massy, France) and Philippe Campo (Montigny le Bretonneux, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for treatment of an industrial effluent with aluminum, comprising: the effluent to be treated is carried to a first zone constituted by a tank having a pH of less than 9.5, so as to promote precipitation of the aluminum in aluminum hydroxide form and to facilitate its removal; a second...