Extraction of Some Rare Earth Elements (La, Pr and Er) from Citrate Medium Using D2EHPA in kerosene.
Mustafa, E., Hasanien, Z., El-Nadi, Y., M. Abdelwahabb, S., Aly, H. (2019). Extraction of Some Rare Earth Elements (La, Pr and Er) from Citrate Medium Using D2EHPA in kerosene.. EKB Journal Management System, 52(3), 74-85. doi: 10.21608/ajnsa.2019.11545.1202
Elsayed Mustafa; Zeinab Hasanien; Yasser El-Nadi; Saad M. Abdelwahabb; Hisham Fouad Aly. "Extraction of Some Rare Earth Elements (La, Pr and Er) from Citrate Medium Using D2EHPA in kerosene.". EKB Journal Management System, 52, 3, 2019, 74-85. doi: 10.21608/ajnsa.2019.11545.1202
Mustafa, E., Hasanien, Z., El-Nadi, Y., M. Abdelwahabb, S., Aly, H. (2019). 'Extraction of Some Rare Earth Elements (La, Pr and Er) from Citrate Medium Using D2EHPA in kerosene.', EKB Journal Management System, 52(3), pp. 74-85. doi: 10.21608/ajnsa.2019.11545.1202
Mustafa, E., Hasanien, Z., El-Nadi, Y., M. Abdelwahabb, S., Aly, H. Extraction of Some Rare Earth Elements (La, Pr and Er) from Citrate Medium Using D2EHPA in kerosene.. EKB Journal Management System, 2019; 52(3): 74-85. doi: 10.21608/ajnsa.2019.11545.1202

Extraction of Some Rare Earth Elements (La, Pr and Er) from Citrate Medium Using D2EHPA in kerosene.

Arab Journal of Nuclear Sciences and Applications
Article 8, Volume 52, Issue 3, July 2019, Page 74-85  XML PDF (1.05 MB)
Document Type: Original Article
DOI: 10.21608/ajnsa.2019.11545.1202
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Authors
Elsayed Mustafa email 1; Zeinab Hasanienorcid 1; Yasser El-Nadiorcid 2; Saad M. Abdelwahabb3; Hisham Fouad Aly4
1E.A.E.A
2Hot Laboratories Center, Atomic Energy Authority, 13759, Egypt
3Ain Shams UNI
4Egyptian Atomic Energy Authority
Abstract
Extraction and possible separation of the rare earth elements, REEs, lanthanum (III), praseodymium (III) and erbium (III) from citric acid solution using Di-2-ethylhexyl phosphoric acid, D2EHPA, in kerosene were studied. The parameters affecting the extraction process were separately studied in order to achieve the maximum possible separation between the different REEs under investigation. It was found that from 1.0 mol/L citric acid solution at pH = 4.0 , the extraction is dependent on the citric acid and D2EHPA concentration as well as temperature. From the experimental results and the main species in the aqueous phase, aproposed extraction equilibrium for the different metal ions was given. Conditional extraction constants for the proposed extraction equilibrium were calculated for the different elements, and found to verify the experimental results. The order of the conditional extraction constants follow the sequence, Er (III) > La (III) > Pr (III). The thermodynamic functions associated with the extraction reaction were evaluated and discussed. Feasibility of separation of Er(III) from La (III), and Pr (III) obtained are given in terms of the separation factors between different elements at different extraction conditions.
Keywords
Keywords: Extraction; REEs; Citric acid; D2EHPA; Separation
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