Investigation of Jordanian uranium resources in carbonate rocks

Alsabbagh, Ahmad; Zaidan, Laith; Harahsheh, Ibtisam; Sunbul, Noora Ba; Landsberger, Sheldon

doi:10.1007/s10967-015-4518-2

Cited by 6 publications

(3 citation statements)

References 12 publications

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“…Uranium was selectively leached by the mixture of sodium carbonate, sodium hydroxide and hydrogen peroxide from hydrous oxide Egyptian monazite [19] and from Polish ores [6,12]. The leaching test using deionized water as a leaching solution (pH = 5.7) was also performed on Jordania carbonate rocks [20]. The leaching efficiency was 9% using deionized water as a leaching solution.…”

Section: Uranium Extraction From Low-grade and Secondary Resources: Fmentioning

confidence: 99%

Uranium in Poland: Resources and Recovery from Low-Grade Ores

Kiegiel¹,

Miśkiewicz²,

Gajda³

et al. 2018

Uranium - Safety, Resources, Separation and Thermodynamic Calculation

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The presented studies deal with an assessment of the possibility of uranium recovery from the low-grade uranium resources in Poland. Uranium was leached from the ground uranium ores with efficiencies in 81-100% range that depend on the type of ore and leaching solution used. In the next step, the post-leaching solution was treated by the solvent extraction or ion exchange chromatography to separate uranium from other metals present in the ore. The novel routes of leaching by using membrane methods were examined. The final product, "yellow cake," was obtained in precipitation step. The studies of precipitation of uranium as ammonium diuranate or uranium peroxide from diluted uranium solutions are presented in this chapter. The work was completed with tentative economic analysis and environmental impact assessment along with radiation protection issues connected to uranium production.

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Section: Uranium Extraction From Low-grade and Secondary Resources: Fmentioning

confidence: 99%

Uranium in Poland: Resources and Recovery from Low-Grade Ores

Kiegiel¹,

Miśkiewicz²,

Gajda³

et al. 2018

Uranium - Safety, Resources, Separation and Thermodynamic Calculation

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“…There are several analytical methodologies used for U determination. The most used ones are inductively coupled plasma mass spectrometry (ICP-MS) [3][4][5], X-ray fluorescence spectrometry (XRFS) [6], flame atomic absorption spectrometry (FAAS), electrothermal atomic absorption spectrometry (ET AAS), optical emission spectrometry with an inductively coupled plasma source (ICP OES), neutron activation analysis (NAA) [7,8], delayed neutron activation analysis (DNAA) [9], liquid scintillation counting (LSC) [10,11], gamma spectroscopy [12] and alpha spectroscopy [13] for instance. Among these analytical methods for U quantification, the epithermal neutron activation analysis (ENAA) was chosen.…”

Section: Introductionmentioning

confidence: 99%

Determination of uranium in tree bark samples by epithermal neutron activation analysis

Lima

Saiki

2019

Braz. J. Rad. Sci.

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In this study uranium (U) concentrations were determined in certified reference materials (CRMs) and in tree bark samples collected in “Cidade Universitária Armando de Salles Oliveira” (CUASO) USP, São Paulo. The barks were collected from different species namely Poincianella pluviosa and Tipuana tipu. These bark samples were cleaned, dried, grated and milled for the analyses by epithermal neutron activation analysis method (ENAA). This method consists on irradiating samples and U standard in IEA-R1 nuclear reactor with thermal neutron flux of 1.9 x 1012 n cm-2 s-1 during 40 to 60 seconds depending on the samples’ matrices. The samples and standard were measured by gamma ray spectroscopy. U was identified by the peak of 74.66 keV of 239U with half life of 23.47 minutes. Concentration of U was calculated by comparative method. For analytical quality control of U results, certified reference materials were analyzed. Results obtained for CRMs presented good precision and accuracy, with |Z score| ≤ 0.39. Uranium concentrations in tree barks varied from 83.1 to 627.6 ng g-1 and the relative standard deviations of these results ranged from 1.8 to 10 %.

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“…Foram determinadas as frações mássicas de 19 elementos diferentes, além de U, utilizando os métodos de NAA e ICP-MS. Seus resultados foram comparados com valores encontrados em outras localidades do mundo e na maioria dos casos, as frações mássicas determinadas em El-Jalamid foram menores que as apresentadas na literatura. Alsabbagh et al (2016) quantificaram U em rochas de carbonato da Jordânia por três diferentes métodos, sendo eles: NAA, espectrometria de raios gama e ICP-MS. Os autores concluíram que as frações mássicas médias de U determinadas pelos diferentes métodos foram semelhantes, o que indica aplicabilidade das técnicas para análise deste elemento nesse tipo de matriz.…”

Section: Revisão Bibliográficaunclassified

Validação do método de análise por ativação com nêutrons para determinação de urânio em amostras ambientais

Lima¹

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Fiz de mim o que não soube E o que podia fazer de mim não o fiz. O dominó que vesti era errado. Conheceram-me logo por quem não era e não desmenti, e perdi-me. Quando quis tirar a máscara, Estava pegada à cara. Quando a tirei e me vi ao espelho, Já tinha envelhecido. Estava bêbado, já não sabia vestir o dominó que não tinha tirado. Deitei fora a máscara e dormi no vestiário Como um cão tolerado pela gerência Por ser inofensivo E vou escrever esta história para provar que sou sublime."

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Investigation of Jordanian uranium resources in carbonate rocks

Cited by 6 publications

References 12 publications

Uranium in Poland: Resources and Recovery from Low-Grade Ores

Uranium in Poland: Resources and Recovery from Low-Grade Ores

Determination of uranium in tree bark samples by epithermal neutron activation analysis

Validação do método de análise por ativação com nêutrons para determinação de urânio em amostras ambientais

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