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On-Line Measurements of the Volatilization of Ruthenium in a Vitrification Process

Published online by Cambridge University Press:  15 February 2011

R. Odoj  and
M. Schwitz
R. Odoj
Affiliation:
Institute for Chemical Technology, Kernforschungsanlage Jülich, FRG
M. Schwitz
Affiliation:
Institute for Chemical Technology, Kernforschungsanlage Jülich, FRG
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Abstract

The studies were performed using Ru–103 as a tracer. The volatilization of Ru from ruthenium containing liquids, like HAW-solutions, is about 15%. A chemical denitration of these solutions with HCHO or HCOOH reduces the volatilization to about 2%. Additional catalytic reduction with Fe-powder lowers the volatilization to about 4 ‰. The carry over of Ru seems to depend on the aerosol production rate and not the vapor pressure. Only RuO2 could be detected in the off-gas.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 6: Symposium D – Scientific Basis for Nuclear Waste Management IV , 1981 , 575
Copyright
Copyright © Materials Research Society 1982

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References

REFERENCES

[1] Odoj, J R., Merz, E., Wolters, R., “Effect of Denitration on Ruthenium Volatilization”, Scientific Basis for Nucl. Waste Management, 2, 911 (1980)Google Scholar
[2] Fletcher, J. M., Jenkins, P. L., Martin, F. S., Powell, A. R. and Todd, R., “Nitrato and Nitro Complexes of Nitrosylruthenium”, J. Inorg. Chem. 1, 378 (1955)Google Scholar
[3] Odoj, R. and Gölitzer, H., “ProzeBverlauf und Reaktionsmcdell der Denitrierung von HLLW nit HCHO”, Jül-Bericht (1982) in preparationGoogle Scholar
[4] Odoj, R., Schwitz, H., Wolters, R., “Volatilization of Ruthenium in a Vitrification Process”, Jül-Bericht (1982) in preparationGoogle Scholar