Ammonium removal from aqueous solution by ion-exchange using packed bed natural zeolite


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Demir A. , Günay A., Debik E.

WATER SA, vol.28, no.3, pp.329-335, 2002 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 28 Issue: 3
  • Publication Date: 2002
  • Doi Number: 10.4314/wsa.v28i3.4903
  • Title of Journal : WATER SA
  • Page Numbers: pp.329-335

Abstract

Ammonium removal from aqueous solution by a natural ion-exchange resin was investigated by considering the factors affecting the ammonium-exchange capacity including the zeolites' particle size, the loading flow rates and the impact of a number of regenerations upon the ion-exchange capacity. The resin column was exhausted by downflow at 10, 25, 50 and 75 bed volume (BV)/h until effluent ammonium concentration of more than 10 mg/lNH(4)(+) was achieved. The results indicate that conditioning of the zeolite improves the ion-exchange capacity and that the smaller particle size also causes a higher ion-exchange capacity due to greater available surface area. The actual ion-exchange capacity of the conditioned fine (1.00+0.125) and coarse (-2.00+1.00) mm clinoptilolite was found to be 0.57 and 0.38 meq/g zeolite, respectively.