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Process chemistry of neptunium. Part II

Abstract

The oxidation state analysis of neptunium in the aqueous feed solution from the Plutonium Plant at Trombay was carried out and it was found that neptunium existed mainly as Np(V) in the feed solution. Batch extraction data for Np(IV) and Np(VI) into 30% TBP/Shell Sol T at different aqueous nitric acid concentration and uranium saturation of the organic phase were obtained at 45 deg C and 60 deg C and the results are summarized. The distribution coefficients of Np(IV) and Np(VI) were obtained as a function of TBP concentration and the data are reported. The effect of nitrous acid on the extraction of neptunium, present in the aqueous phase as Np(IV) and Np(V), by 30% TBP was studied and the data obtained are given. The data on the rate of reduction of NP(VI) and Np(V) to Np(IV) by U(IV) were obtained for different U(IV) and nitric acid concentrations. Some redox reactions involving Np(IV), Pu(IV) and V(V) were investigated and their possible application in the purex process for neptunium recovery were explored. (auth)
Publication Date:
Jul 01, 1974
Product Type:
Technical Report
Report Number:
BARC-736
Reference Number:
NSA-31-019367
Subject:
N40450* -Chemistry-Radiochemistry & Nuclear Chemistry- Reactor Fuel Processing; NEPTUNIUM; SOLVENT EXTRACTION; NITRIC ACID; PLUTONIUM; PUREX PROCESS; RESEARCH PROGRAMS; STABILITY; TBP; URANIUM; VANADIUM
Sponsoring Organizations:
Sponsor not identified
OSTI ID:
4949127
Research Organizations:
Bhabha Atomic Research Centre, Bombay (India)
Country of Origin:
India
Language:
English
Submitting Site:
TIC
Size:
Pages: 74
Announcement Date:
Mar 16, 2013

Citation Formats

Srinivasan, N., Ramaniah, M. V., Patil, S. K., Ramakrishna, V. V., Swarup, R., Chadha, A., and Avadhany, G. V.N. Process chemistry of neptunium. Part II. India: N. p., 1974. Web.
Srinivasan, N., Ramaniah, M. V., Patil, S. K., Ramakrishna, V. V., Swarup, R., Chadha, A., & Avadhany, G. V.N. Process chemistry of neptunium. Part II. India.
Srinivasan, N., Ramaniah, M. V., Patil, S. K., Ramakrishna, V. V., Swarup, R., Chadha, A., and Avadhany, G. V.N. 1974. "Process chemistry of neptunium. Part II." India.
@misc{etde_4949127,
title = {Process chemistry of neptunium. Part II}
author = {Srinivasan, N., Ramaniah, M. V., Patil, S. K., Ramakrishna, V. V., Swarup, R., Chadha, A., and Avadhany, G. V.N.}
abstractNote = {The oxidation state analysis of neptunium in the aqueous feed solution from the Plutonium Plant at Trombay was carried out and it was found that neptunium existed mainly as Np(V) in the feed solution. Batch extraction data for Np(IV) and Np(VI) into 30% TBP/Shell Sol T at different aqueous nitric acid concentration and uranium saturation of the organic phase were obtained at 45 deg C and 60 deg C and the results are summarized. The distribution coefficients of Np(IV) and Np(VI) were obtained as a function of TBP concentration and the data are reported. The effect of nitrous acid on the extraction of neptunium, present in the aqueous phase as Np(IV) and Np(V), by 30% TBP was studied and the data obtained are given. The data on the rate of reduction of NP(VI) and Np(V) to Np(IV) by U(IV) were obtained for different U(IV) and nitric acid concentrations. Some redox reactions involving Np(IV), Pu(IV) and V(V) were investigated and their possible application in the purex process for neptunium recovery were explored. (auth)}
place = {India}
year = {1974}
month = {Jul}
}