ION CAGING for Scale Prevention in High Recovery Desalination Systems

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Cations that can precipitate from an aqueous composition to produce scaling are sequestered by adding a multi-dentate ligand to the aqueous composition. The multi-dentate ligand bonds with the cation to form a non-scaling ionic complex; and the aqueous solution with the ionic complex is used in a process that produces substantially pure water from the aqueous composition, where the cation, absent formation of the ionic complex, is subject to scaling. The pH of the aqueous composition (or a brine including components of the aqueous composition) is then reduced to release the cation from the multi-dentate ligand; and the multi-dentate ligand, after the cation is released, is then reused in a predominantly closed loop.

Researchers

John Lienhard / Mohamad Mirhi / Windsor Sung / Maximus St. John / Steven Lam / Prakash Govindan / Anurag Bajpayee

Departments: Department of Mechanical Engineering
Technology Areas: Chemicals & Materials: Catalysis & Synthesis / Environmental Engineering: Sustainability & Recycling, Water Treatment

  • ion caging for scale prevention in high-recovery desalination
    Saudi Arabia | Granted | 6,555
  • ion sequestration for scale prevention in high-recovery desalination systems
    United States of America | Granted | 9,617,179
  • ion caging for scale prevention in high-recovery desalination
    Australia | Granted | 0
  • ion caging for scale prevention in high-recovery desalination
    China | Granted | 2,014,800,067,902
  • ion sequestration for scale prevention in high-recovery desalination systems
    Israel | Granted | 240,462
  • ion caging for scale prevention in high-recovery desalination
    India | Granted | 307,096
  • ion sequestration for scale prevention in high-recovery desalination systems
    Singapore | Granted | 11,201,505,708
  • ion caging for scale prevention in high-recovery desalination
    Korea (south) | Published application
  • ion caging for scale prevention in high-recovery desalination
    South Africa | Granted | 2,015
  • ion sequestration for scale prevention
    United States of America | Granted | 9,957,180

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