TY - JOUR
T1 - Alteration of CsAlSiO4 in hydrothermal fluids
AU - Komarneni, Sridhar
AU - White, William B.
N1 - Funding Information:
Acknowledgement-This work was supported by the U.S. Department of Energy through subcontract with the Office of Nuclear Waste Isolation, Battelle Memorial Institute, Contract E512-03400. Sincere appreciation is expressed to Dr. S. A. Gallagher for providing the synthetic CsAlSiO, phase.
PY - 1982
Y1 - 1982
N2 - CsAlSiO4, one of the hosts for the immobilization of Cs from nuclear wastes, altered extensively in solutions of low and high cationic activity under mild hydrothermal conditions which may be expected in a radwaste repository. For example, the CsAlSi04 phase changed to pollucite and chlorite in deionized water and 3 n MgCl2 brine, respectively, releasing 1.3% to 98.6% of its Cs into solution at temperatures of 100-300 °C for 4 weeks under a confining pressure of 300 bar. These and earlier results indicate that under radwaste repository conditions pollucite is a stable phase but not the CsAlSiO4 phase and, therefore, CsAlSiO4 is not a good host for the immobilization of Cs from nuclear wastes.
AB - CsAlSiO4, one of the hosts for the immobilization of Cs from nuclear wastes, altered extensively in solutions of low and high cationic activity under mild hydrothermal conditions which may be expected in a radwaste repository. For example, the CsAlSi04 phase changed to pollucite and chlorite in deionized water and 3 n MgCl2 brine, respectively, releasing 1.3% to 98.6% of its Cs into solution at temperatures of 100-300 °C for 4 weeks under a confining pressure of 300 bar. These and earlier results indicate that under radwaste repository conditions pollucite is a stable phase but not the CsAlSiO4 phase and, therefore, CsAlSiO4 is not a good host for the immobilization of Cs from nuclear wastes.
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U2 - 10.1016/0191-815X(82)90035-3
DO - 10.1016/0191-815X(82)90035-3
M3 - Article
AN - SCOPUS:0020331031
SN - 0191-815X
VL - 3
SP - 169
EP - 172
JO - Nuclear and Chemical Waste Management
JF - Nuclear and Chemical Waste Management
IS - 3
ER -