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| Titel: |
Investigations on Cationic Exchange Capacity and Unused Bed Zone according to operational conditions in a Fixed Bed Reactor for water lead removal by a natural zeolite |
| Auteur: |
Fanfan PN. Mabon N. Thonart P. Lognay G. Copin A. Barthélemy JP. |
| Verschenen in: |
Biotechnologie, agronomie, société et environnement |
| Paginering: | Jaargang 10 (2006) nr. 2 pagina's 93-99 |
| Jaar: |
2006 |
| Inhoud: |
In this study, attention has been focused on the behaviour of the Cationic Exchange Capacity (CEC) and the Unused Bed Zone (UBZ), according to the operating parameters (bed length: L, column diameter: D, particle diameter: d and fl ow rate: Q) in a Fixed Bed Reactor (FBR). The investigations are performed for a single-component study of lead on New Zealand clinoptilolite at 25 ± 1°C. The results show a constant operating CEC of 1.00 ± 0.015 meq.g-1 which is independent of the operational parameters listed above. The performance of the operations expressed as UBZ, shows an optimum for the ratio L/D (bed length and column diameter) fi xed at 18.1, for Q = 2.9 BV.h-1 (bed volume per hour) and particle diameter d = 0.38 mm (the ratio particle diameter on column diameter d/D at 0.057). This maximum performance is reached with the lowest UBZ value of 5.6% of the operating CEC. Overall interpretation drawn from the results according to UBZ shows that decreasing the particles size improves the performance of ion exchange process; as well as decreasing the fl ow rate. Nevertheless, the increase of L/D to a certain extent does not improve ion exchange performances. |
| Uitgever: |
University of Gembloux, Faculty of Agricultural Sciences |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 7 van 10 gevonden artikelen
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