Studies on the pretreatment of zeolite clinoptilolite in packed beds

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

Research output: Contribution to journalArticle

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
Volume25
Issue number2
Publication statusPublished - 2004
Externally publishedYes

Fingerprint

Zeolites
clinoptilolite
Packed beds
zeolite
Flow rate
wetting
Wetting
ion exchange
Ion exchange
temperature
saturation
Temperature
liquid
Liquids
rate

Keywords

  • Clinoptilolite
  • Ion exchange
  • Packed red
  • Pretreatment
  • Zeolites

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry

Cite this

Studies on the pretreatment of zeolite clinoptilolite in packed beds. / Inglezakis, V. J.; Loizidou, M. D.; Grigoropoulou, H. P.

In: Environmental Technology, Vol. 25, No. 2, 2004, p. 133-139.

Research output: Contribution to journalArticle

Inglezakis, VJ, Loizidou, MD & Grigoropoulou, HP 2004, 'Studies on the pretreatment of zeolite clinoptilolite in packed beds', Environmental Technology, vol. 25, no. 2, pp. 133-139.
Inglezakis, V. J. ; Loizidou, M. D. ; Grigoropoulou, H. P. / Studies on the pretreatment of zeolite clinoptilolite in packed beds. In: Environmental Technology. 2004 ; Vol. 25, No. 2. pp. 133-139.
@article{0ee1b239e8b04cc590501d93a0b305f2,
title = "Studies on the pretreatment of zeolite clinoptilolite in packed beds",
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.",
keywords = "Clinoptilolite, Ion exchange, Packed red, Pretreatment, Zeolites",
author = "Inglezakis, {V. J.} and Loizidou, {M. D.} and Grigoropoulou, {H. P.}",
year = "2004",
language = "English",
volume = "25",
pages = "133--139",
journal = "Environmental Technology (United Kingdom)",
issn = "0959-3330",
publisher = "Taylor and Francis",
number = "2",

}

TY - JOUR

T1 - Studies on the pretreatment of zeolite clinoptilolite in packed beds

AU - Inglezakis, V. J.

AU - Loizidou, M. D.

AU - Grigoropoulou, H. P.

PY - 2004

Y1 - 2004

N2 - 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.

AB - 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.

KW - Clinoptilolite

KW - Ion exchange

KW - Packed red

KW - Pretreatment

KW - Zeolites

UR - http://www.scopus.com/inward/record.url?scp=1842787718&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=1842787718&partnerID=8YFLogxK

M3 - Article

C2 - 15116871

AN - SCOPUS:1842787718

VL - 25

SP - 133

EP - 139

JO - Environmental Technology (United Kingdom)

JF - Environmental Technology (United Kingdom)

SN - 0959-3330

IS - 2

ER -