PROCESS CHEMISTRY OF NEPTUNIUM. PART I.

Technical Report · Tue Jul 01 00:00:00 EDT 1969

OSTI ID:4760310

Srinivasan, N; Ramaniah, M V; Patil, S K; Ramakrishna, V V; Swarup, R; Chadha, A

A brief literature survey on the process chemistry of neptunium has been made. The present work deals with the various methods of estimation of neptunium, effect of nitric acid concentration on the distribution coefficients of neptunium (IV) and neptunium (VI) into 30% TBP in Shell sol-T, the variation of distribution coefficients of neptunium (IV) and neptunium (VI) as a function of TBP saturation by uranium and the analysis of the purex process solutions at different stages for total neptunium content. From the data, it has been shown that, under the usual uranium loading of 30% TBP in the purex process, both Np(IV) and Np(VI) could be extracted to an appreciable extent, particularly at a nitric acid concentration higher than 2 M, whereas at lower nitric acid concentration very small amounts of Np(IV) may be extracted under the same conditions. The results of the analyses of the purex process solutions reveal that during the first extraction cycle neptunium is almost quantitatively co-extracted with uranium and plutonium and in the second extraction cycle neptunium is about 50% extracted. In the third extraction cycle, neptunium is almost completely extracted along with uranium. (auth)

• Research Organization: Bhabha Atomic Research Centre, Bombay (India)
• NSA Number: NSA-24-011646
• OSTI ID: 4760310
• Report Number(s): BARC-428
• Resource Relation: Other Information: UNCL. Orig. Receipt Date: 31-DEC-70
• Country of Publication: India
• Language: English

Related Subjects

N20510* -Chemistry-Radiochemistry & Nuclear Chemistry- Reactor Fuel Processing
N20130 -Chemistry-Analytical & Separations Chemistry-Radiometric & Radiochemical Procedures
BUTYL PHOSPHATES
DETERMINATION
DISTRIBUTION
FUELS
NEPTUNIUM
PUREX PROCESS
REPROCESSING
SEPARATION PROCESSES
SOLUTIONS
TBP
URANIUM
WATER
PHOSPHORIC ACID
TRIBUTYL ESTER/solvent properties for neptunium
NEPTUNIUM/separation from irradiated fuels by solvent extraction using TBP
NEPTUNIUM/distribution between aqueous solutions and TBP
effects of uranium on
PUREX PROCESS/neptunium content of process solutions in
URANIUM/effects on distribution of neptunium between aqueous solutions and TBP
NEPTUNIUM/ determination of
evaluation of methods for