RECOVERY OF URANIUM FROM THORIUM IN HYDROCHLORIC-ACID MEDIUM BY LIQUID EMULSION MEMBRANES CONTAINING TRIOCTYLPHOSPHINE OXIDE

Authors
ELREEFY SA SELIM YT ALY HF
Citation
Sa. Elreefy et al., RECOVERY OF URANIUM FROM THORIUM IN HYDROCHLORIC-ACID MEDIUM BY LIQUID EMULSION MEMBRANES CONTAINING TRIOCTYLPHOSPHINE OXIDE, Journal of radioanalytical and nuclear chemistry, 228(1-2), 1998, pp. 21-25
Citations number
16
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Analytical","Nuclear Sciences & Tecnology
Journal title
Journal of radioanalytical and nuclear chemistry → ACNP
ISSN journal
02365731
Volume
228
Issue
1-2
Year of publication
1998
Pages
21 - 25
Database
ISI
SICI code
0236-5731(1998)228:1-2<21:ROUFTI>2.0.ZU;2-7
Abstract
The isolation of minor uranium concentration from thorium matrix in HC l medium was investigated using liquid emulsion membrane (LEM) contain ing TOPO as carrier, Span 80 as surfactant and sodium citrate as strip ping agent. The factors affecting the stability of the LEM were invest igated. Different parameters affecting the permeation process were als o studied. The results obtained showed that, under certain conditions it is possible to isolate ca. 98% of U(VI) (120 ppm) in 1.0M HCl solut ion containing Th (1000 ppm). The isolated U was found to be contamina ted with less than 3% of Th.