EXTRACTION OF URANIUM(VI) FROM NITRIC-ACID SOLUTION INTO SUPERCRITICAL CARBON-DIOXIDE CONTAINING TRI-N-BUTYLPHOSPBATE

Authors
ISO S MEGURO Y YOSHIDA Z
Citation
S. Iso et al., EXTRACTION OF URANIUM(VI) FROM NITRIC-ACID SOLUTION INTO SUPERCRITICAL CARBON-DIOXIDE CONTAINING TRI-N-BUTYLPHOSPBATE, Chemistry Letters, (5), 1995, pp. 365-366
Citations number
6
Categorie Soggetti
Chemistry
Journal title
Chemistry Letters → ACNP
ISSN journal
03667022
Issue
5
Year of publication
1995
Pages
365 - 366
Database
ISI
SICI code
0366-7022(1995):5<365:EOUFNS>2.0.ZU;2-M
Abstract
Uranium(VI) in the aqueous solution of (3 - 6) M (1 M = 1 mol dm(-3)) HNO3 + 3 M LiNO3 was extracted into supercritical CO2 fluid containing 3 vol% of tri-n-butylphosphate (TBP) at 60 degrees C and (1.5 - 3.5) x 10(7) Pa. Rapid and complete removal of CO2 medium from the extract was attained by gasification of CO2 at atmospheric temperature and pre ssure.