Patents Assigned to N.A. Water Systems, LLC
  • Process for removing barium from water
    Patent number: 7608190
    Abstract: A method for reducing barium concentration in waste streams. Hydrous manganese oxide (HMO) is formed in solution/slurry and mixed with water containing barium such that the hydrous manganese oxide exhibits a negative charge at a desired pH. Barium from the water is adsorbed onto the negatively charged HMO surface. The HMO with adsorbed barium is separated from the water, producing treated effluent having a reduced barium concentration.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: October 27, 2009
    Assignee: N.A. Water Systems, LLC
    Inventors: Kashi Banerjee, Charles D. Blumenschein