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Radiochimica Acta

International Journal for chemical aspects of nuclear science and technology

Ed. by Qaim, Syed M.

12 Issues per year


IMPACT FACTOR 2016: 1.271
5-year IMPACT FACTOR: 1.286

CiteScore 2016: 1.20

SCImago Journal Rank (SJR) 2016: 0.486
Source Normalized Impact per Paper (SNIP) 2016: 0.761

Online
ISSN
2193-3405
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Volume 102, Issue 11 (Nov 2014)

Issues

An attempt to select thermodynamic data and to evaluate the solubility of radioelements with uncertainty under HLW disposal conditions

Tetsuji Yamaguchi / Seiji Takeda / Yuki Nishimura / Yoshihisa Iida / Tadao Tanaka
Published Online: 2014-07-01 | DOI: https://doi.org/10.1515/ract-2014-2248

Abstract

An attempt was made to select thermodynamic data with uncertainties and to evaluate the solubility of radioelements with uncertainties considering the uncertainties of the thermodynamic data and variation in groundwater chemistry. The thermodynamic data were selected by reviewing the JAEA-TDB released in 2012 from the viewpoint of consistency of the data selection process, the conservativeness of the solubility evaluation and testing up-to-date data. A Monte Carlo-based probabilistic solubility calculation code, PA-SOL, was used for the uncertainty analysis of the solubility. The uncertainty analysis for the solubility of 13 elements showed large uncertainties for Nb, Tc and U. The variations in pH, pe and total carbonate concentration assumed in this study induce significant uncertainties to the evaluated solubility. The reactions whose log K0 with uncertainties induce significant uncertainties to the evaluated solubilities were identified.

Keywords: Solubility; Thermodynamic data; High-level radioactive waste; Uncertainty; Groundwater chemistry; Database

About the article

Accepted: 2014-05-23

Received: 2014-01-13

Published Online: 2014-07-01

Published in Print: 2014-11-28


Citation Information: Radiochimica Acta, ISSN (Online) 2193-3405, ISSN (Print) 0033-8230, DOI: https://doi.org/10.1515/ract-2014-2248.

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©2014 Walter de Gruyter Berlin/Boston. Copyright Clearance Center

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