A pilot-scale evaluation of magnetic ion exchange treatment for removal of natural organic material and inorganic anions

Treavor H. Boyer, Philip C. Singer

Research output: Contribution to journalArticle

148 Scopus citations

Abstract

The objective of this research was to evaluate a magnetic ion exchange process (MIEX) for the removal of natural organic material (NOM) and bromide on a continuous-flow pilot-scale basis under different operating conditions and raw water characteristics. The most important operating variable was the effective resin dose (ERD), which is the product of the steady-state resin concentration in the contactor and the regeneration ratio. The raw water employed in this study had a moderate concentration of ultraviolet (UV)-absorbing substances and dissolved organic carbon (DOC), and a low turbidity, alkalinity, and concentration of competing anionic species. Experiments were conducted using the ambient raw water and raw water spiked with bromide, chloride, and sulfate. Substantial removal of UV-absorbing substances and DOC was achieved at ERDs as low as 0.16 mL/L. Moderate bromide removal was achieved, depending on the ERD. Increasing the sulfate concentration resulted in decreased removal of UV-absorbing substances, DOC, and bromide. Consistent results were observed between the continuous-flow pilot plant tests and batch equilibrium studies.

Original languageEnglish (US)
Pages (from-to)2865-2876
Number of pages12
JournalWater Research
Volume40
Issue number15
DOIs
StatePublished - Aug 2006
Externally publishedYes

Keywords

  • Anion exchange
  • Bromide
  • Effective resin dose
  • Magnetic ion exchange
  • Natural organic material
  • Pilot plant
  • Sulfate

ASJC Scopus subject areas

  • Ecological Modeling
  • Water Science and Technology
  • Waste Management and Disposal
  • Pollution

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