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 language | English |
|---|---|
| Pages (from-to) | 133-139 |
| Number of pages | 7 |
| Journal | Environmental Technology |
| Volume | 25 |
| Issue number | 2 |
| Publication status | Published - 2004 |
| Externally published | Yes |
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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 journal › Article
}
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 -