Effect of sucrose on technetium and rhenium retention during vitrification of low-activity wastes
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F22%3A00562230" target="_blank" >RIV/67985891:_____/22:00562230 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22310/22:43925590
Result on the web
<a href="https://ceramics.onlinelibrary.wiley.com/doi/10.1111/jace.18701" target="_blank" >https://ceramics.onlinelibrary.wiley.com/doi/10.1111/jace.18701</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/jace.18701" target="_blank" >10.1111/jace.18701</a>
Alternative languages
Result language
angličtina
Original language name
Effect of sucrose on technetium and rhenium retention during vitrification of low-activity wastes
Original language description
Sucrose (C12H22O11) has been used in low-activity waste (LAW) melter feeds containing large fractions of nitrates, nitrites, or both because it facilitates foam suppression and denitration. This study focused on the effect of sucrose in LAW feeds on technetium (Tc) and rhenium (Re) retention. The amount of sucrose added in feeds was varied to differentiate the carbon-to-nitrogen mole ratio (C/N ratio). The results show that larger sucrose addition (higher C/N ratio) enhances Tc and Re retention. Reducing conditions induced by sucrose decomposition and early chemical reactions between sucrose and NaNO3/NaNO2 are expected to increase Tc and Re retention. However, high sucrose addition decreased sulfur (S) retention slightly because sodium sulfate decomposes in reducing conditions at lower temperature. This early sulfate decomposition can affect Tc and Re retention partly because these species can be soluble in sulfate phases. This correlation indicates that the decrease of sulfate phases in the glass by early decomposition can reduce the solubility of Tc and Re in the sulfate phases, which may increase Tc and Re retention in the glass. In addition, continuous gas evolution and vigorous foaming at the foaming temperature range of 700-900 degrees C may influence Tc and Re retention process interrupting retention or facilitating volatilization.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20504 - Ceramics
Result continuities
Project
<a href="/en/project/LTAUSA18075" target="_blank" >LTAUSA18075: ANALYSIS OF FOAMING – CRITICAL BATCH-TO-GLASS CONVERSION PROCESS</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of the American Ceramic Society
ISSN
0002-7820
e-ISSN
1551-2916
Volume of the periodical
105
Issue of the periodical within the volume
12
Country of publishing house
US - UNITED STATES
Number of pages
13
Pages from-to
7321-7333
UT code for WoS article
000841275200001
EID of the result in the Scopus database
2-s2.0-85135877765