Extraction Of Anions From Solutions And Mixtures Using Hyperbranched Macromolecules

Jean Frechet (Inventor), Emine Boz (Inventor), Mamadou Diallo (Inventor), Yonggui Chi (Inventor)

    Research output: Patent


    Hyperbranched macromolecules and methods are described for selectively filtering contaminants such as anions from water and non-aqueous solutions, particularly in the presence of competing contaminants including other anions. The hyperbranched macromolecules may contain 2-hydroxyalkyl, 2-methyl-2-hydroxylalkyl, and other groups, which may be hydrophilic or hydrophobic. The molecules may preferentially bind to the contaminant at interest at low pH, and release the contaminant at a pH of about 9. The molecules may be used to filter contaminants including perchlorate and nitrate even in the presence of high sulfate concentrations.

    Original languageEnglish (US)
    Patent numberUS2013270190
    IPCC02F 1/ 42 A I
    Priority date10/1/12
    StatePublished - Oct 17 2013


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