Patents Examined by Claire Perrin
  • Method for purifying aqueous compositions
    Patent number: 9309134
    Abstract: Method for purifying an aqueous composition by removing silicon therefrom, according to which a compound comprising aluminum is added to the aqueous composition in order to obtain a molar aluminum content greater than the molar silicon content in said composition, the pH of the composition is controlled and maintained at a value higher than or equal to 8 and lower than or equal to 10, and the precipitate formed is separated from the aqueous suspension obtained.
    Type: Grant
    Filed: April 27, 2009
    Date of Patent: April 12, 2016
    Assignee: SOLVAY (SOCIETE ANONYME)
    Inventor: Alessandra Pastacaldi