[EN] EXTRACTION OF ANIONS FROM SOLUTIONS AND MIXTURES USING HYPERBRANCHED MACROMOLECULES<br/>[FR] EXTRACTION D'ANIONS DE SOLUTIONS ET DE MÉLANGES AU MOYEN DE MACROMOLÉCULES HYPERBRANCHÉES
申请人:CALIFORNIA INST OF TECHN
公开号:WO2010040117A2
公开(公告)日:2010-04-08
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 alkyl, 2-hydroxyalkyl, 2-methyl-2-hydroxylalkyl, 2-hydroxy-2- phenylalkyl, 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.