Electrochemical characterization of ion-exchange resin beds and removal of cobalt by electrodeionization for high purity water production

K. H. Yeon, J. H. Seong, S. Rengaraj, S. H. Moon*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

61 Citations (Scopus)

Abstract

The characterization of three cation exchange resins, IRN77, SKN1, and IR120, for the removal of cobalt ions from an aqueous solution by. electrodeionization (EDI) was studied. The study includes investigation of resin beds in terms of their ion exchange capacity, electrical conductivity, and zeta potential. The conductivity of a resin bed was analyzed using a porous-plug model to understand the current path. From the experiments, more than a 97% cobalt ion removal was achieved under optimal conditions. Furthermore, production of ultrapure water with a two-stage EDI process was tested for the reuse of treated water.

Original languageEnglish
Pages (from-to)443-462
Number of pages20
JournalSeparation Science and Technology
Volume38
Issue number2
DOIs
Publication statusPublished - 2003
Externally publishedYes

Keywords

  • Cobalt removal
  • Electrochemical characterization
  • Electrodeionization
  • Ion exchange resin
  • Porous-plug model

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • Process Chemistry and Technology
  • Filtration and Separation

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