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Title: Effect of sucrose on foaming and melting behavior of a low-activity waste melter feed

Abstract

Reductants, such as sucrose, are added to nuclear waste melter feeds containing high fractions of nitrates and nitrites to reduce excessive foaming during feed-to-glass conversion and to decrease sulfate segregation and increase technetium retention. The sucrose effect on foaming and melting reactions during the conversion was examined using the feed volume expansion, thermogravimetric analysis, evolved gas analysis, X-ray diffraction, and scanning electron microscopy with energy dispersive X-ray spectrometry. Different sucrose additions were used to vary the carbon to nitrogen (C/N) ratio in the melter feed. As C/N ratio increased, the extent of foaming decreased and N2/NO ratio increased in the gas phase evolved. Significant foam suppression, rapid gas release at approximately 250°C, and reduction of transition metal oxides were observed at C/N > 1.1.

Authors:
 [1];  [2];  [2];  [1]; ORCiD logo [1];  [1];  [3];  [4];  [5];  [6]
  1. BATTELLE (PACIFIC NW LAB)
  2. Institute of Chemical Technology - Laboratory of Inorganic Materials - Czech Republic
  3. EMERITUS PROGRAM
  4. Institute of Chemical Technology in Prague
  5. JFA-RC TECHNICAL SERVICES, LLC.
  6. OFFICE RIVER PROTECTION
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1571494
Report Number(s):
PNNL-SA-143422
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Journal of the American Ceramic Society
Additional Journal Information:
Journal Volume: 102; Journal Issue: 12
Country of Publication:
United States
Language:
English

Citation Formats

Appel, Connor J., Klouzek, Jaroslav, Klouzek, Jaroslav, Jani, Nikhil, Lee, Seung Min, Dixon, Derek R., Hrma, Pavel R., Pokorny, Richard, Schweiger, Michael J., and Kruger, Albert A. Effect of sucrose on foaming and melting behavior of a low-activity waste melter feed. United States: N. p., 2019. Web. doi:10.1111/jace.16675.
Appel, Connor J., Klouzek, Jaroslav, Klouzek, Jaroslav, Jani, Nikhil, Lee, Seung Min, Dixon, Derek R., Hrma, Pavel R., Pokorny, Richard, Schweiger, Michael J., & Kruger, Albert A. Effect of sucrose on foaming and melting behavior of a low-activity waste melter feed. United States. doi:10.1111/jace.16675.
Appel, Connor J., Klouzek, Jaroslav, Klouzek, Jaroslav, Jani, Nikhil, Lee, Seung Min, Dixon, Derek R., Hrma, Pavel R., Pokorny, Richard, Schweiger, Michael J., and Kruger, Albert A. Sun . "Effect of sucrose on foaming and melting behavior of a low-activity waste melter feed". United States. doi:10.1111/jace.16675.
@article{osti_1571494,
title = {Effect of sucrose on foaming and melting behavior of a low-activity waste melter feed},
author = {Appel, Connor J. and Klouzek, Jaroslav and Klouzek, Jaroslav and Jani, Nikhil and Lee, Seung Min and Dixon, Derek R. and Hrma, Pavel R. and Pokorny, Richard and Schweiger, Michael J. and Kruger, Albert A.},
abstractNote = {Reductants, such as sucrose, are added to nuclear waste melter feeds containing high fractions of nitrates and nitrites to reduce excessive foaming during feed-to-glass conversion and to decrease sulfate segregation and increase technetium retention. The sucrose effect on foaming and melting reactions during the conversion was examined using the feed volume expansion, thermogravimetric analysis, evolved gas analysis, X-ray diffraction, and scanning electron microscopy with energy dispersive X-ray spectrometry. Different sucrose additions were used to vary the carbon to nitrogen (C/N) ratio in the melter feed. As C/N ratio increased, the extent of foaming decreased and N2/NO ratio increased in the gas phase evolved. Significant foam suppression, rapid gas release at approximately 250°C, and reduction of transition metal oxides were observed at C/N > 1.1.},
doi = {10.1111/jace.16675},
journal = {Journal of the American Ceramic Society},
number = 12,
volume = 102,
place = {United States},
year = {2019},
month = {12}
}