Journal of Radioanalytical and Nuclear Chemistry
Volume/Issue:
Volume 262: Issue 2
Electrochemical reduction of uranium(VI) in nitric acid-hydrazine solution on glassy carbon electrode
Authors:
Y.-Z. Wei Institute of Research and Innovation (IRI) Nuclear Chemistry and Chemical Engineering Center 1201, Takada, Kashiwa, Chiba 277-0861 Japan E-mail

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B. Fang Institute of Research and Innovation (IRI) Nuclear Chemistry and Chemical Engineering Center 1201, Takada, Kashiwa, Chiba 277-0861 Japan E-mail

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T. Arai Institute of Research and Innovation (IRI) Nuclear Chemistry and Chemical Engineering Center 1201, Takada, Kashiwa, Chiba 277-0861 Japan E-mail

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M. Kumagai Institute of Research and Innovation (IRI) Nuclear Chemistry and Chemical Engineering Center 1201, Takada, Kashiwa, Chiba 277-0861 Japan E-mail

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Pages:
409–415
Online Publication Date:
07 Dec 2004
Publication Date:
01 Nov 2004
Article Category:
Research Article
DOI:
https://doi.org/10.1023/b:jrnc.0000046770.86000.d6
Restricted access

Abstract  

Electrochemical reduction of U(VI) in nitric acid-hydrazine solution is greatly influenced by the concentration of nitric acid. In low acidity nitric acid solution such as 0.1M (M=mol/dm3) HNO3, U(VI) was firstly reduced to U(V) and then partially reduced to U(IV). In high acidity nitric acid solution, e.g., 3-6M HNO3, an electrode process of two-electron transfer was involved in the reduction of U(VI). A higher U(IV) yield could be achieved in nitric acid solution with higher concentration. Hydrazine was very effective in suppressing the reduction of concentrated nitric acid, and the optimal concentration of hydrazine added was 0.075 to 0.15M in 6M HNO3

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Cover Journal of Radioanalytical and Nuclear Chemistry
Journal of Radioanalytical and Nuclear Chemistry
Print ISSN:
0236-5731
Online ISSN:
1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation		 1968
Volumes
per Year		 1
Issues
per Year		 12
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)

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