AKUFVE STUDIES ON EXTRACTION BEHAVIOR OF NEPTUNIUM FROM SIMULATED HLWSOLUTIONS BY 30-PERCENT TBP

Authors
CHITNIS RR WATTAL PK MURALI MS NAIR GC MATHUR JN
Citation
Rr. Chitnis et al., AKUFVE STUDIES ON EXTRACTION BEHAVIOR OF NEPTUNIUM FROM SIMULATED HLWSOLUTIONS BY 30-PERCENT TBP, Solvent extraction and ion exchange, 16(4), 1998, pp. 899-912
Citations number
15
Categorie Soggetti
Chemistry
Journal title
Solvent extraction and ion exchange → ACNP
ISSN journal
07366299
Volume
16
Issue
4
Year of publication
1998
Pages
899 - 912
Database
ISI
SICI code
0736-6299(1998)16:4<899:ASOEBO>2.0.ZU;2-D
Abstract
The extraction behaviour of neptunium from 3 M nitric acid as well as simulated pressurised heavy water reactor high level radioactive waste (PHWR-HLW) solution by 30% TBP/dodecane was studied using AKUFVE. Np( IV)/Np(V) was oxidised to Np(VI) using oxidising agents, such as K2Cr2 O7, VO2+ and NaNO2. Stripping of neptunium from the loaded TBP phase w as studied using reducing agents like hydrogen peroxide, ascorbic acid , hydroxylamine hydrochloride and hydrazine sulphate. Results of these extraction and stripping studies have been discussed in this paper.