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Selective Radionuclide (Cs+, Sr2+, and Ni2+) Ion-exchange by K2xMgxSn3-xS6 (x=0.5-0.95) (KMS-2)

Published online by Cambridge University Press:  01 February 2011

Joshua Leighton Mertz ,
Emmanouil J. Manos  and
Mercouri Kanatzidis
Joshua Leighton Mertz
Affiliation:
j-mertz@northwestern.edu, Northwestern University, Department of Chemistry, Evanston, Illinois, United States
Emmanouil J. Manos
Affiliation:
emmanouil.manos@ucy.ac.cy, Northwestern University, Department of Chemistry, Evanston, Illinois, United States
Mercouri Kanatzidis
Affiliation:
m-kanatzidis@northwestern.edu, Northwestern University, Department of Chemistry, Evanston, Illinois, United States
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Abstract

137Cs and 90Sr, both byproducts of the fission process, make up the majority of high-level waste from nuclear power plants. 63Ni is a byproduct of the erosion-corrosion process of the reactor components in nuclear energy plants. The concentrations of these ions in solution determine the Waste Class (A,B, or C) and thus selective removal of these ions over large excesses of other ions is necessary to reduce waste and cut costs. Herein we report the use of the Inorganic Ion Specific Media (ISM) K2xMgxSn3-xS6 (x=0.5-0.9) (KMS-2) for the ion exchange of Cs+, Sr2+, and Ni2+ in several different conditions. We will also report the stability of this new material in the general conditions found at nuclear power plants (pH ˜6-8) and DOE sites (pH>10). Measurements at low concentrations were conducted with inductively coupled plasma mass spectrometry and Kd values are reported for each of the ions in a variety of conditions.

Keywords

absorptionion-exchange materialwaste management
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1265: Symposium AA – Scientific Basis for Nuclear Waste Management XXXIV , 2010 , 1265-AA02-01
Copyright
Copyright © Materials Research Society 2010

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