Academic Journals Database
Disseminating quality controlled scientific knowledge

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

ADD TO MY LIST
 
Author(s): Fanfan PN. | Mabon N. | Thonart P. | Lognay G. | Copin A. | Barthélemy JP.

Journal: Biotechnologie, Agronomie, Société et Environnement
ISSN 1370-6233

Volume: 10;
Issue: 2;
Start page: 93;
Date: 2006;
VIEW PDF   PDF DOWNLOAD PDF   Download PDF Original page

Keywords: Cationic Exchange Capacity | Unused Bed Zone | clinoptilolite | Fixed Bed Reactor | zeolite

ABSTRACT
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.
Affiliate Program      Why do you need a reservation system?