Effect of sucrose on foaming and melting behavior of a low-activity waste melter feed
Result description
Reductants, such as sucrose (C12H22O11), are added to nuclear waste melter feeds containing high fractions of nitrates and nitrites to reduce excessive foaming during feed-to-glass conversion, decrease sulfate segregation, and increase technetium retention. The effect of sucrose on foaming and melting reactions during the conversion was examined using the feed volume expansion test, thermogravimetric analysis, evolved gas analysis, x-ray diffraction, and scanning electron microscopy with energy dispersive x-ray spectrometry. Different amounts of sucrose were added to vary the carbon to nitrogen (C/N) ratio in the melter feed. As the C/N ratio increased, the extent of foaming decreased, and the N-2/NO ratio increased in the evolved gas. Significant foam suppression, rapid gas release at approximately 250 degrees C, and reduction in transition metal oxides were observed at C/N > 1.1.
Keywords
The result's identifiers
Result code in IS VaVaI
Alternative codes found
RIV/60461373:22310/19:43918980
Result on the web
https://ceramics.onlinelibrary.wiley.com/doi/abs/10.1111/jace.16675
DOI - Digital Object Identifier
Alternative languages
Result language
angličtina
Original language name
Effect of sucrose on foaming and melting behavior of a low-activity waste melter feed
Original language description
Reductants, such as sucrose (C12H22O11), are added to nuclear waste melter feeds containing high fractions of nitrates and nitrites to reduce excessive foaming during feed-to-glass conversion, decrease sulfate segregation, and increase technetium retention. The effect of sucrose on foaming and melting reactions during the conversion was examined using the feed volume expansion test, thermogravimetric analysis, evolved gas analysis, x-ray diffraction, and scanning electron microscopy with energy dispersive x-ray spectrometry. Different amounts of sucrose were added to vary the carbon to nitrogen (C/N) ratio in the melter feed. As the C/N ratio increased, the extent of foaming decreased, and the N-2/NO ratio increased in the evolved gas. Significant foam suppression, rapid gas release at approximately 250 degrees C, and reduction in transition metal oxides were observed at C/N > 1.1.
Czech name
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Czech description
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Classification
Type
Jimp - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20504 - Ceramics
Result continuities
Project
LTAUSA18075: ANALYSIS OF FOAMING – CRITICAL BATCH-TO-GLASS CONVERSION PROCESS
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
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
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Volume of the periodical
102
Issue of the periodical within the volume
12
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
7594-7605
UT code for WoS article
000477317000001
EID of the result in the Scopus database
2-s2.0-85068791883
Basic information
Result type
Jimp - Article in a specialist periodical, which is included in the Web of Science database
OECD FORD
Ceramics
Year of implementation
2019