You need JavaScript to view this

Basic research on separation control of long life nuclides in fuel reprocessing processes

Abstract

The behavior of technetium (Tc) in nuclear fuel reprocessing processes has become the subject to be elucidated in the transition to distribution process by coextraction and the catalytic action in distribution process. In order to forecast or control the behavior of Tc in reprocessing processes, it is necessary to understand that at which valence Tc exists stably in respective processes. Tc is stable at 7 valence in nitric acid solution expected in reprocessing. In this research, the reaction speed of the oxidation and reduction reactions of rhenium (Re) which simulates Tc was measured by laser Raman spectroscopy which can do high speed analysis of valence. The experimental method is explained. The Raman spectra of Re in the experimental system of this research were measured in perchloric acid solution and nitric acid solution, and compared with the values in literatures. As the result, the validity of this research was assured. It was confirmed that Re(7) was not reduced by sulfamic acid and ascorbic acid. Re(7) was reduced by thiocyanic acid once, but was oxidized again by the reaction of thiocyanic acid and nitric acid. (K.I.)
Authors:
Suzuki, Atsuyuki; Usami, Go; [1]  Maeda, Mitsuru; Fujine, Sachio; Uchiyama, Gunzo; Kihara, Takehiro; Asakura, Toshihide; Hotoku, Shinobu
  1. Tokyo Univ. (Japan). Faculty of Engineering
Publication Date:
Jan 01, 1996
Product Type:
Technical Report
Report Number:
UTRCN-G-24
Reference Number:
SCA: 050800; PA: JPN-97:006288; EDB-97:105590; SN: 97001823179
Resource Relation:
Other Information: PBD: Jan 1996; Related Information: Is Part Of Report on progress of researches by common utilization of JAERI nuclear facilities, for fiscal 1994; PB: 373 p.
Subject:
05 NUCLEAR FUELS; REPROCESSING; SEPARATION PROCESSES; TECHNETIUM; REACTION KINETICS; REDUCTION; RAMAN SPECTROSCOPY; ASCORBIC ACID; SULFAMIC ACID; THIOCYANIC ACID; RHENIUM
OSTI ID:
506250
Research Organizations:
Tokyo Univ. (Japan). Research Center for Nuclear Science and Technology
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Other: ON: DE97736276; TRN: JP9706288
Availability:
OSTI as DE97736276
Submitting Site:
JPN
Size:
pp. 295-296
Announcement Date:

Citation Formats

Suzuki, Atsuyuki, Usami, Go, Maeda, Mitsuru, Fujine, Sachio, Uchiyama, Gunzo, Kihara, Takehiro, Asakura, Toshihide, and Hotoku, Shinobu. Basic research on separation control of long life nuclides in fuel reprocessing processes. Japan: N. p., 1996. Web.
Suzuki, Atsuyuki, Usami, Go, Maeda, Mitsuru, Fujine, Sachio, Uchiyama, Gunzo, Kihara, Takehiro, Asakura, Toshihide, & Hotoku, Shinobu. Basic research on separation control of long life nuclides in fuel reprocessing processes. Japan.
Suzuki, Atsuyuki, Usami, Go, Maeda, Mitsuru, Fujine, Sachio, Uchiyama, Gunzo, Kihara, Takehiro, Asakura, Toshihide, and Hotoku, Shinobu. 1996. "Basic research on separation control of long life nuclides in fuel reprocessing processes." Japan.
@misc{etde_506250,
title = {Basic research on separation control of long life nuclides in fuel reprocessing processes}
author = {Suzuki, Atsuyuki, Usami, Go, Maeda, Mitsuru, Fujine, Sachio, Uchiyama, Gunzo, Kihara, Takehiro, Asakura, Toshihide, and Hotoku, Shinobu}
abstractNote = {The behavior of technetium (Tc) in nuclear fuel reprocessing processes has become the subject to be elucidated in the transition to distribution process by coextraction and the catalytic action in distribution process. In order to forecast or control the behavior of Tc in reprocessing processes, it is necessary to understand that at which valence Tc exists stably in respective processes. Tc is stable at 7 valence in nitric acid solution expected in reprocessing. In this research, the reaction speed of the oxidation and reduction reactions of rhenium (Re) which simulates Tc was measured by laser Raman spectroscopy which can do high speed analysis of valence. The experimental method is explained. The Raman spectra of Re in the experimental system of this research were measured in perchloric acid solution and nitric acid solution, and compared with the values in literatures. As the result, the validity of this research was assured. It was confirmed that Re(7) was not reduced by sulfamic acid and ascorbic acid. Re(7) was reduced by thiocyanic acid once, but was oxidized again by the reaction of thiocyanic acid and nitric acid. (K.I.)}
place = {Japan}
year = {1996}
month = {Jan}
}