Kinetics of removal of chromium from water and electronic process wastewater by ion exchange resins: 1200H, 1500H and IRN97H

S. Rengaraj, Cheol Kyun Joo, Younghun Kim, Jongheop Yi

Research output: Contribution to journalArticle

389 Citations (Scopus)

Abstract

The removal of chromium from aqueous solution by an ion exchange resin is described. Ion exchange resins 1200H, 1500H and IRN97H show a remarkable increase in sorption capacity for chromium, compared to other adsorbents. The adsorption process, which is pH dependent show maximum removal of chromium in the pH range 2-6 for an initial chromium concentration of 10mg/l. The metal ion adsorption obeyed linear, Langmuir and Freundlich isotherms. The adsorption of chromium on these cation exchange resins follows first-order reversible kinetics and pseudo-first-order kinetics. The intraparticle diffusion of chromium on ion exchange resins represents the rate-limiting step. The uptake of chromium by the ion exchange resins was reversible and thus have good potential for the removal/recovery of chromium from aqueous solutions. We conclude that such ion exchange resins can be used for the efficient removal of chromium from water and wastewater.

Original languageEnglish
Pages (from-to)257-275
Number of pages19
JournalJournal of Hazardous Materials
Volume102
Issue number2-3
DOIs
Publication statusPublished - Aug 29 2003

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Keywords

  • Adsorption dynamics
  • Adsorption isotherms
  • Adsorption kinetics
  • Chromium
  • Electronic process wastewater
  • Intraparticle diffusion
  • Ion exchange resin

ASJC Scopus subject areas

  • Chemical Health and Safety
  • Process Chemistry and Technology
  • Safety, Risk, Reliability and Quality
  • Environmental Engineering

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