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Development and Characteristics of a New Porous Glass Crystalline Matrix (Gubka) for Stabilizing Radioactive and Hazardous Solutions

Published online by Cambridge University Press:  21 March 2011

A. G. Anshits ,
A. S. Aloy ,
A. A. Tretyakov ,
D. A. Knecht ,
T. J. Tranter ,
O. M. Sharonova ,
T. A. Vereshchagina ,
I. D. Zykova ,
M. V. Burdin  and
N.V. Sapozhnikova
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A. G. Anshits
Affiliation:
Institute Chemistry and Chemical Technology, Siberian Branch of the Russian Academy of Sciences (ICCT SB RAS), 42 K. Marx St., Krasnoyarsk 660049, Russia
A. S. Aloy
Affiliation:
V. G. Khlopin Radium Institute (KRI), 28 2-nd Murinskiy Ave., St. Petersburg, 194021, Russia
A. A. Tretyakov
Affiliation:
Federal State Unitary Enterprise.Mining and Chemical Combine. (FSUE MCC), 53 Lenin St., Zheleznogorsk, Krasnoyarsk Region, 662990, Russia
D. A. Knecht
Affiliation:
Idaho National Engineering and Environmental Laboratory, P. O. Box 1625, Idaho Falls, ID 83415
T. J. Tranter
Affiliation:
Idaho National Engineering and Environmental Laboratory, P. O. Box 1625, Idaho Falls, ID 83415
O. M. Sharonova
Affiliation:
Institute Chemistry and Chemical Technology, Siberian Branch of the Russian Academy of Sciences (ICCT SB RAS), 42 K. Marx St., Krasnoyarsk 660049, Russia
T. A. Vereshchagina
Affiliation:
Institute Chemistry and Chemical Technology, Siberian Branch of the Russian Academy of Sciences (ICCT SB RAS), 42 K. Marx St., Krasnoyarsk 660049, Russia
I. D. Zykova
Affiliation:
Institute Chemistry and Chemical Technology, Siberian Branch of the Russian Academy of Sciences (ICCT SB RAS), 42 K. Marx St., Krasnoyarsk 660049, Russia
M. V. Burdin
Affiliation:
Federal State Unitary Enterprise.Mining and Chemical Combine. (FSUE MCC), 53 Lenin St., Zheleznogorsk, Krasnoyarsk Region, 662990, Russia
N.V. Sapozhnikova
Affiliation:
V. G. Khlopin Radium Institute (KRI), 28 2-nd Murinskiy Ave., St. Petersburg, 194021, Russia
A. V. Strelnikov
Affiliation:
V. G. Khlopin Radium Institute (KRI), 28 2-nd Murinskiy Ave., St. Petersburg, 194021, Russia
J. Macheret
Affiliation:
Idaho National Engineering and Environmental Laboratory, P. O. Box 1625, Idaho Falls, ID 83415
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Abstract

This paper describes the results of a joint research program of Russian institutes at St. Petersburg, Krasnoyarsk and Zheleznogorsk and the Idaho National Engineering and Environmental Laboratory to develop a new material for stabilizing radioactive solutions and other uses, such as high-temperature catalysis. An open-cell glass crystalline porous material, Gubka, or “sponge” in Russian, having an open-cell porosity of up to 90 %, was produced from hollow glass crystalline microspheres (cenospheres) formed in fly ash from coal combustion. The cenospheres were separated into fractions based on grain size, density, magnetic properties, and whether or not they were perforated. Selected fractions were molded and agglomerated by sintering with or without a binder at high temperatures. Depending on the cenosphere fractions selected, sintering conditions and additional treatments, Gubka was formed with an open-cell porosity ranging from 40-90 %. The porous material has a bulk density of 0.3-0.6 g/cm3, and two types of porous openings: 0.1-30 micrometer flow-through pores in the cenosphere walls and 20-100 micrometer interglobular pores between the cenospheres. Examples of Gubka application described in this paper include stabilization of different surrogate radioactive waste solutions containing 0.0001 to 0.7 M nitric/hydrochloric acid and 0 to 1.2 M sodium nitrate. Waste solid loadings of 46-55 wt.% nitrate salts, or 26-37 wt.% oxides after calcination, were achieved in those tests.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 663: Symposium – Scientific Basis for Nuclear Waste management XXIV , 2000 , 35
Copyright
Copyright © Materials Research Society 2001

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References

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