Polyacrylic Anion Exchange Research Articles

Studies on application of polyacrylate anion-exchangers in sorption and separation of iminodiacetate rare earth element(III) complexes

Polyacrylate anion-exchanger resins are considered economically useful for selective isolation, concentration and recovery of nickel, iron, copper and cobalt cyanide complexes. They also find wide application in food processing, pharmaceutical industry, sugar refining, etc. This kind of polyacrylate anion-exchangers has been applied by us to separate rare earth element complexes with IMDA. Strongly basic gel and macroporous polyacrylate anion-exchangers Amberlite IRA 458 and Amberlite IRA 958 were used. The following pairs of iminodiacetate rare earth element complexes were selected for separation: Sm(III)–Ho(III), La(III)–Nd(III), La(III)–Pr(III) based on the affinity of these elements for strongly basic anion-exchangers. The results obtained indicate the possibility of application of anion-exchangers of this type for separation of individual lanthanide pairs in macro–micro systems. High yield of the obtained preparations is the evidence for the practical application of this method.