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Sorption Properties of Natural Sulfides with Respect to Technetium

Published online by Cambridge University Press:  26 February 2011

W.-D. Bock ,
H. Brühl ,
C. Trapp  and
A. Winkler
W.-D. Bock
Affiliation:
Institute of Applied Geology, Free University of Berlin, Radiohydrological Laboratory, Wichernstraβe 16, D-1000 Berlin 33, Federal Republic of Germany
H. Brühl
Affiliation:
Institute of Applied Geology, Free University of Berlin, Radiohydrological Laboratory, Wichernstraβe 16, D-1000 Berlin 33, Federal Republic of Germany
C. Trapp
Affiliation:
Institute of Applied Geology, Free University of Berlin, Radiohydrological Laboratory, Wichernstraβe 16, D-1000 Berlin 33, Federal Republic of Germany
A. Winkler
Affiliation:
Institute of Applied Geology, Free University of Berlin, Radiohydrological Laboratory, Wichernstraβe 16, D-1000 Berlin 33, Federal Republic of Germany
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Abstract

Technetium sorption properties of Fe2+-bearing minerals and different metal sulfides were studied by batch and column experiments. Pure stibnite (SbS3), pyrrhotite (FeS), pyrite (FeS2), galena (PbS) and loell ingite (FeAs2) fix Tc to a great extent (> 95 % of TcO4- starting inventory). They appear to be favourable backfill materials for redox-sensitive radionucli-des. Physico-chemical processes of fixation and possible fixation modes are discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 127: Symposium BERLIN – Scientific Basis for Nuclear Waste Management XII , 1988 , 973
Copyright
Copyright © Materials Research Society 1989

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References

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