Removal of chromium from water and wastewater by ion exchange resins

S. Rengaraj, Kyeong H. Yeon, Seung Hyeon Moon

Research output: Contribution to journalArticle

495 Citations (Scopus)

Abstract

Removal of chromium from water and wastewater is obligatory in order to avoid water pollution. Batch shaking adsorption experiments were carried out to evaluate the performance of IRN77 and SKN1 cation exchange resins in the removal of chromium from aqueous solutions. The percentage removal of chromium was examined by varying experimental conditions viz., dosage of adsorbent, pH of the solution and contact time. It was found that more than 95% removal was achieved under optimal conditions. The adsorption capacity (k) for chromium calculated from the Freundlich adsorption isotherm was found to be 35.38 and 46.34mg/g for IRN77 and SKN1 resins, respectively. The adsorption of chromium on these cation exchange resins follows the first-order reversible kinetics. The ion exchange resins investigated in this study showed reversible uptake of chromium and, thus, have good application potential for the removal/recovery of chromium from aqueous solutions.

Original languageEnglish
Pages (from-to)273-287
Number of pages15
JournalJournal of Hazardous Materials
Volume87
Issue number1-3
DOIs
Publication statusPublished - Oct 12 2001

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Keywords

  • Adsorption isotherms
  • Adsorption kinetics
  • Chromium
  • 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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