Effect of high ionic strength on the extraction of uranium (VI) ions
Joint Authors
Khalili, F. I.
Nazzal, M. K.
al-Bayyari, M. A.
Source
Journal of Saudi Chemical Society
Issue
Vol. 18, Issue 1 (31 Jan. 2014), pp.59-67, 9 p.
Publisher
Publication Date
2014-01-31
Country of Publication
Saudi Arabia
No. of Pages
9
Main Subjects
Topics
Abstract EN
Preparation and characterization of didodecylphosphoric acid (HDDPA) as an extractant in toluene was carried.
Mass spectroscopy showed that the monomer peak at 457.4 amu [M–Na+] is double that of the dimer at 891.9 amu [M–M–Na+] and the monomer molecules concentration dominate the dimer molecules in toluene.
HDDPA was used as an extractant for the extraction of U(VI) ion from perchlorate and nitrate media that have ionic strength (1.00, 3.00, 5.00, 7.00 M).
The effect of HDDPA concentration, pcH, ionic strength of supporting electrolytes, and temperature in the range 15–45 ˚C on the extraction process have been studied.
The stoichiometry of the extraction of U (VI) ion, the free energy change (DG), the enthalpy change (DH), the entropy change (DS), and Kex at different ionic strength have been calculated.
The formula of the complexes, which were formed has been established to be UO2(X)(R2)(HR2) at pcH equal and UO2(X)(R2)(HR2) and UO2(X)(R2) at 2.00 pcH =1.00, where (X) is ClO4 or NO3 and (HR2) is didodecylphosphoric acid monomer, (R2) is the deprotonated didodecylphosphoric acid, where R is the dodecyl group.
American Psychological Association (APA)
Nazzal, M. K.& al-Bayyari, M. A.& Khalili, F. I.. 2014. Effect of high ionic strength on the extraction of uranium (VI) ions. Journal of Saudi Chemical Society،Vol. 18, no. 1, pp.59-67.
https://search.emarefa.net/detail/BIM-351438
Modern Language Association (MLA)
Nazzal, M. K.…[et al.]. Effect of high ionic strength on the extraction of uranium (VI) ions. Journal of Saudi Chemical Society Vol. 18, no. 1 (Jan. 2014), pp.59-67.
https://search.emarefa.net/detail/BIM-351438
American Medical Association (AMA)
Nazzal, M. K.& al-Bayyari, M. A.& Khalili, F. I.. Effect of high ionic strength on the extraction of uranium (VI) ions. Journal of Saudi Chemical Society. 2014. Vol. 18, no. 1, pp.59-67.
https://search.emarefa.net/detail/BIM-351438
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 67
Record ID
BIM-351438