Journal of Radioanalytical and Nuclear Chemistry
Volume/Issue:
Volume 258: Issue 3
Use of open-cell resilient polyurethane foam loaded with crown ether for the preconcentration of uranium from aqueous solutions
Authors:
M. Abou-Mesalam Atomic Energy Authority Hot Labs. Centre P.Code 13759 Cairo Egypt

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I. El-Naggar Atomic Energy Authority Hot Labs. Centre P.Code 13759 Cairo Egypt

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M. Abdel-Hai Atomic Energy Authority Hot Labs. Centre P.Code 13759 Cairo Egypt

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M. El-Shahawi Mansoura University Chemistry Department, Faculty of Science at Damiatta Egypt

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Pages:
619–625
Online Publication Date:
01 Nov 2004
Publication Date:
17 Dec 2003
Article Category:
Research Article
DOI:
https://doi.org/10.1023/b:jrnc.0000011759.59176.53
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Abstract  

The preconcentration of uranium from aqueous solutions on open-cell resilient polyurethane foams (PUF) impregnated with crown ether as an organic extractant in different conditions was investigated. The data showed that 50 minutes is a sufficient time to attain equilibrium with a maximum extraction percentage for uranium ion on polyurethane foams loaded with crown ether. Also the extraction percentage of uranium is increased markedly with increasing the pH values up to pH ~ 6 and displayed the lowest extraction at 8>pH>6. The different isotherms of uranium sorption have shown that the sorption followed a Freundlich isotherm. Column studies have been carried out in order to extend these studies to the plant scale. From the data of column sorption and breakthrough curves, the height equivalent of theoretical plates (HETP), and breakthrough capacity which affect the efficiency of the column have been calculated and found to be 1.03 mm/plate, 64±5 and 58.3 mg uranium/gram polyurethane foam impregnated with crown ether, respectively.

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Cover Journal of Radioanalytical and Nuclear Chemistry
Journal of Radioanalytical and Nuclear Chemistry
Print ISSN:
0236-5731
Online ISSN:
1588-2780

Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation		 1968
Volumes
per Year		 1
Issues
per Year		 12
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)

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