ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,410,557, issued on Sept. 9, was assigned to Messer Austria GmbH (Gumpoldskirchen, Austria).
"Process and apparatus for white liquor oxidation" was invented by Bernhard Thaller (Ulmerfeld-Hausmening, Austria).
According to the abstract* released by the U.S. Patent & Trademark Office: "In a process for oxidation of white liquor, in particular of white liquor used in a process of production of paper or cellulose, the oxygen required for the oxidation is supplied to the reactor or the reactors in which the oxidation is carried out at least partially in the form of oxygen-containing nanobubbles. Due to the relatively long lifetime of the nanobubbles this very efficiently provides oxygen ...