Characterization of cesium containing glass-bonded ceramic waste forms

Borosilicate and aluminosilicate pollucite nanocrystals for the storage of radionuclides

“…Aluminium-rich pollucite is also crystallized in the process of high-temperature sintering of initial glass-bonded zeolite A ceramic waste form (CWF). In the sintering process, cesium-rich zeolite A is transformed in cesiumless sodalite and cesium migrates to newly formed cesium-rich analcime and pollucite phases [23].…”

Physical properties of an alumino-silicate waste form for cesium and strontium

“…This begs the question of whether a percentage of the waste elements migrated into a glassy phase, as observed in previous investigations on glassy ceramics and nuclear waste [20]. From microscopy and X-ray analyses (Fig.…”

Tungstate-based glass–ceramics for the immobilization of radio cesium

“…Lambregts and Frank [28] characterized glass-bonded ceramic waste forms developed by Argonne National Laboratories which were designed for the immobilization of fission product and minor actinide-containing salt electrolyte derived from the pyroelectrometallurgical treatment of irradiated nuclear fuel assemblies from the EBR-II reactor. This glass-bonded ceramic waste form was generated by mixing salt-occluded LTA sodalite zeolite samples (2Na 8 (Al 6 Si 6 O 24 )Cl l2 ) with borosilicate glass frits (66.5 wt% SiO 2 , 19.1 wt% B 2 O 3 , 6.8 wt% Al 2 O 3 , 7.1 wt% Na 2 O, 0.5 wt% K 2 O) in a 3:1 ratio and heating in air to 915°C.…”

“…Some possible disposal strategies include conversion of the materials to: (1) a tailored ceramic prepared from the adsorbent itself [17,18]; (2) glass made using either classical oxide precursors [19,20] or solgel precursors [21][22][23][24]; (3) conventional synroc-type ceramic material [25,26]; (4) a phosphate-based glass or ceramic [27]; (5) a glass-ceramic composite (GCC) material [28][29][30] or (6) a cementitious material [31,32].…”