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Radiochimica Acta

International Journal for chemical aspects of nuclear science and technology

Editor-in-Chief: Qaim, Syed M.

IMPACT FACTOR 2017: 1.202

CiteScore 2017: 1.22

SCImago Journal Rank (SJR) 2017: 0.409
Source Normalized Impact per Paper (SNIP) 2017: 0.869

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Volume 96, Issue 8


Comparative studies on the dissolution of ceramic UO2 pellets in nitric acid by microwave and conventional heating

Yunfeng Zhao / Jing Chen
Published Online: 2009-09-25 | DOI: https://doi.org/10.1524/ract.2008.1507


The dissolution data of UO2 are important to develop the new process of uranium ore leaching and new head-end reprocessing of spent nuclear fuel. The dissolution experiments of UO2 pellets in 8 M nitric acid by microwave heating and conventional heating were carried out respectively in the present work. Compared with the conventional heating, the microwave heating can remarkably promote the dissolution process of UO2 pellets with a dissolution ratio increase of 26%–46%. The kinetics results show that the dissolution processes by microwave heating and conventional heating match well with the diffusion control model and the surface reaction control model, respectively.

Keywords: Microwave heating; Uranium oxide; Dissolution; Nitric acid; Reprocessing

About the article

Received: 2007-09-20

Revised: 2008-01-04

Published Online: 2009-09-25

Published in Print: 2008-08-01

Citation Information: Radiochimica Acta, Volume 96, Issue 8, Pages 467–471, ISSN (Online) 2193-3405, ISSN (Print) 0033-8230, DOI: https://doi.org/10.1524/ract.2008.1507.

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