Studies on the pretreatment of zeolite clinoptilolite in packed beds

V. J. Inglezakis, M. D. Loizidou, H. P. Grigoropoulou

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The effect of volumetric flow rate, ranging from 5 to 45 Bed Volumes per hour (BV h-1) and temperature, ranging from 25 to 59°C, during pretreatment of clinoptilolite on its effective capacity has been investigated. Pretreatment tests have been performed in an upflow ion exchange bed. Increased temperatures were found to increase the effective capacity of clinoptilolite. Effective capacity was maximal at low volumetric flow rates, indicating an influence of contact time and complete saturation of the zeolite bed at flow rates lower than 10 BV h-1 Furthermore, a comparison between upflow and downflow operation at the same operating conditions showed that better results are obtained in upflow conditions, probably due to the better wetting of the material and the absence of liquid maldistribution.

Original languageEnglish
Pages (from-to)133-139
Number of pages7
JournalEnvironmental Technology (United Kingdom)
Volume25
Issue number2
DOIs
Publication statusPublished - 2004

Keywords

  • Clinoptilolite
  • Ion exchange
  • Packed bed
  • Pretreatment
  • Zeolites

ASJC Scopus subject areas

  • Environmental Chemistry
  • Water Science and Technology
  • Waste Management and Disposal

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