Abstract
Immobilization and solidification of hazardous cations like Cs137 and Sr90 are required while handling the radioactive waste of nuclear power plants. Efforts are on to find a fail proof method of safe disposal of nuclear wastes. In this context, various materials like borosilicate glass, zeolites, cements and synthetic rocks have been tried by several workers. This communication deals with the synthesis, characterization, cesium uptake capacity and leaching behaviour of synthetic alumina-substituted calcium silicate hydroxy hydrate, which are close to that obtained for the natural mineral,11 Å tobermorite. The synthetic mineral show cation selectivity for Cs+ in presence of500–1000 times concentrated solutions of Na+, K+, Mg+, Ca2+, Ba2+ and Sr2+. Although the ordinary portland cement (OPC) which is often used in waste management operations alone holds negligible amounts of Cs+ and Sr2+, the addition of alumina-substituted tobermorite to OPC enhances the retention power of cement matrix by drastically lowering the leach rate of cations
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References
Crawford R W, Glasser F P, Rahman A A, Angus M J and McCulloch C E 1971Radioactive waste management and development of waste 6 195
Gandhi P M 1997Indian Association of Nuclear Chemists and Allied Scientists Bulletin 11 32
Joint Committee on Powder Diffraction Standards (JCPDS) 1989 Card No. 19-1364, 29-379, Newton Square, Pennsylvania, USA
Hespe E D 1971Atomic Energy Rev. 9 195
Kalousek G L 1957J. Am. Ceram. Soc. 40 74
Komarneni S and Roy D M 1983Science 221 647
Komarneni S and Tsuji M 1989aJ. Am. Ceram. Soc. 72 1967
Komarneni S and Tsuji M 1989bJ. Mater. Sci. 4 698
Plecas I B 1983Proc. waste management ‘83’ (Tucson, Arizona) p. 186
Plecas I B, Mihajlovic L J and Kostadinovic AM 1985RWMAD 6 161
Plecas I B, Peric A D, Drijaca J D and Kostadinovic A M 1991aCem. Concr. Res. 21 941
Plecas I B, Peric A D, Drijaca J D and Kostadinovic A M 1991bJ. Radioanal. Nucl. Chem. Lett. 154 309
Plecas I B, Peric A D, Drijaca J D and Kostadinovic A M 1991cJ. Radioanal. Nucl. Chem. Lett. 154 121
Plecas I B, Peric A D, Glodic S D and Kostadinovic A M 1992J. Radioanal. Nucl. Chem. Lett. 166 373
Plecas I B, Peric A D, Drijaca J D and Kostadinovic A M 1995J. Radioanal. Nucl. Chem. Lett. 199 405
Shrivastava O P and Verma T 1995J. advanced cement based matrices (New York: Elsevier Sci.)2 p. 119
Shrivastava O P and Rashmi Shrivastava 1998Indian J. Chem. 37(A) 726
Shrivastava O P and Rashmi Shrivastava 1999Nuclear and radio chemistry symposium, BRNS, Department of Atomic Energy, BARC, Mumbai 3 371
Shrivastava O P, Verma T and Shrivastava Rashmi 1994 Cation exchange applications of synthetic silicate minerals for immobilization and solidification of simulated nuclear waste in cement matrix, DAE Project Report No. 36/3/91-G p. 117
Shrivastava O P, Verma T and Wattal P K 1995J. advanced cement based matrices (New York: Elsevier Sci.)2 p. 80
Vlachou P V and Piau J M 1997Cem. Concr. Res. 2 869
Vlachou P V and Piau J M 1998Cem. Concr. Res. 29 28
Wattal P K, Govindan A K, Jahagirdar P B and Chitnis R R 1989 Evaluation of matrices and conditioning techniques for low and intermediate level waste concentrations and residue, PE and SDD, BARC AEC Govt of India
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Shrivastava, O.P., Shrivastava, R. Cation exchange applications of synthetic tobermorite for the immobilization and solidification of cesium and strontium in cement matrix. Bull Mater Sci 23, 515–520 (2000). https://doi.org/10.1007/BF02903893
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DOI: https://doi.org/10.1007/BF02903893