Effect of Divalent Metal Cations on Contaminant Removal by Bicarbonate-Form Anion Exchange Resin

Christopher A. Rokicki, Treavor Boyer

Research output: Contribution to journalArticle

1 Scopus citations


This work investigated the role of divalent metal cations (Mg2+, Ca2+, and Cd2+) and subsequent precipitation or complexation on decreased contaminant removal by bicarbonate-form anion exchange resin (AER-HCO3) relative to chloride-form AER (AER-Cl). The results showed that the removal of dissolved organic carbon and nitrate was lower for AER-HCO3 than AER-Cl, and contaminant removal by AER-HCO3 was affected by the presence of metal cation. For instance, magnesium and cadmium exhibited the greatest and least interference, respectively, with contaminant removal by AER-HCO3. The results suggested that precipitation was not the cause of decreased contaminant removal by AER-HCO3, and instead implied that complex formation between the contaminant and divalent metal was responsible for differences in removal by AER

Original languageEnglish (US)
Pages (from-to)2284-2294
Number of pages11
JournalSeparation Science and Technology (Philadelphia)
Issue number15
StatePublished - Oct 13 2015
Externally publishedYes



  • fouling
  • magnetic ion exchange (MIEX)
  • natural organic matter (NOM)

ASJC Scopus subject areas

  • Chemistry(all)
  • Process Chemistry and Technology
  • Chemical Engineering(all)
  • Filtration and Separation

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