Purification of Abu-Zenima wet crude yellow cake using alkaline leaching of U(VI)
Alkaline leaching of U (VI) from the crude yellow cake (Abu-Zenima Project, Sinai, Egypt) was applied using sodium bicarbonate solution at moderate temperature 45 °C. The effect of different leaching parameters such as sodium bicarbonate concentration, solid: liquid mixing ratio (S:L), leaching time...
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2018-12-01
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Series: | Egyptian Journal of Petroleum |
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doaj-a795f43268834ac0958ef267e8a06e1d2020-11-24T21:44:29ZengElsevierEgyptian Journal of Petroleum1110-06212018-12-01274523530Purification of Abu-Zenima wet crude yellow cake using alkaline leaching of U(VI)Aida L. El-Ansary0Galal M. Abd El-Wahab1Eman E. Bayoumi2El-Said A. Nouh3Chemistry Department, Faculty of science, Cairo University, EgyptNuclear Materials Authority (NMA), P.O. Box 530 El Maadi, Cairo, EgyptNuclear Materials Authority (NMA), P.O. Box 530 El Maadi, Cairo, Egypt; Corresponding author.Nuclear Materials Authority (NMA), P.O. Box 530 El Maadi, Cairo, EgyptAlkaline leaching of U (VI) from the crude yellow cake (Abu-Zenima Project, Sinai, Egypt) was applied using sodium bicarbonate solution at moderate temperature 45 °C. The effect of different leaching parameters such as sodium bicarbonate concentration, solid: liquid mixing ratio (S:L), leaching time and leaching temperature were studied. 91.7% of uranium content has been selectively leached at the optimum conditions. Almost 98% of uranium content in the leach liquor was selectively precipitated as uranium peroxide UO4·2H2O using hydrogen peroxide solution. The final product was of nuclear purity 97.2% where most undesirable impurities were minimized to the acceptable levels of the international standard specification of nuclear purity ASTM C788-03 (2015). Keywords: Uranium, Crude yellow cake, Sodium bicarbonate, Leaching, Hydrogen peroxide, Precipitationhttp://www.sciencedirect.com/science/article/pii/S1110062117301927 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Aida L. El-Ansary Galal M. Abd El-Wahab Eman E. Bayoumi El-Said A. Nouh |
spellingShingle |
Aida L. El-Ansary Galal M. Abd El-Wahab Eman E. Bayoumi El-Said A. Nouh Purification of Abu-Zenima wet crude yellow cake using alkaline leaching of U(VI) Egyptian Journal of Petroleum |
author_facet |
Aida L. El-Ansary Galal M. Abd El-Wahab Eman E. Bayoumi El-Said A. Nouh |
author_sort |
Aida L. El-Ansary |
title |
Purification of Abu-Zenima wet crude yellow cake using alkaline leaching of U(VI) |
title_short |
Purification of Abu-Zenima wet crude yellow cake using alkaline leaching of U(VI) |
title_full |
Purification of Abu-Zenima wet crude yellow cake using alkaline leaching of U(VI) |
title_fullStr |
Purification of Abu-Zenima wet crude yellow cake using alkaline leaching of U(VI) |
title_full_unstemmed |
Purification of Abu-Zenima wet crude yellow cake using alkaline leaching of U(VI) |
title_sort |
purification of abu-zenima wet crude yellow cake using alkaline leaching of u(vi) |
publisher |
Elsevier |
series |
Egyptian Journal of Petroleum |
issn |
1110-0621 |
publishDate |
2018-12-01 |
description |
Alkaline leaching of U (VI) from the crude yellow cake (Abu-Zenima Project, Sinai, Egypt) was applied using sodium bicarbonate solution at moderate temperature 45 °C. The effect of different leaching parameters such as sodium bicarbonate concentration, solid: liquid mixing ratio (S:L), leaching time and leaching temperature were studied. 91.7% of uranium content has been selectively leached at the optimum conditions. Almost 98% of uranium content in the leach liquor was selectively precipitated as uranium peroxide UO4·2H2O using hydrogen peroxide solution. The final product was of nuclear purity 97.2% where most undesirable impurities were minimized to the acceptable levels of the international standard specification of nuclear purity ASTM C788-03 (2015). Keywords: Uranium, Crude yellow cake, Sodium bicarbonate, Leaching, Hydrogen peroxide, Precipitation |
url |
http://www.sciencedirect.com/science/article/pii/S1110062117301927 |
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