Direct immobilization of iodine-loaded silver-coated silica gel with silicate glass powders at low temperature

• Published in: Journal of radioanalytical and nuclear chemistry Vol. 329; no. 1; pp. 401 - 410
• Main Authors: Yan, Meng, Ding, Congcong, Shu, Xiaoyan, Liu, Yi, Yang, Jingjun, Wei, Guilin, Zhang, Zhentao, Xie, Yi, Lu, Xirui
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.07.2021; Springer; Springer Nature B.V
• Subjects: Bismuth oxides; Bismuth trioxide; Boron oxides; Chemistry; Chemistry and Materials Science; Diagnostic Radiology; Hadrons; Hazardous waste management industry; Heavy Ions; Immobilization; Inorganic Chemistry; Iodine; Low temperature; Nuclear Chemistry; Nuclear energy; Nuclear Physics; Physical Chemistry; Powders; Radioactive waste disposal; Radioactive wastes; Raw materials; Silica; Silica gel; Silica glass; Silicates; Silicon dioxide; Waste management; Zinc oxide; Silica-gel; Iodine waste; Silicate glass powders; Low temperature immobilization
• ISSN: 0236-5731; 1588-2780
• DOI: 10.1007/s10967-021-07765-1

To long-term immobilization of secondary iodine-waste, iodine loaded silver-coated silica-gel (AgIs), glass-powder was used to directly solidify AgIs at low temperature. B 2 O 3 -Bi 2 O 3 -ZnO-SiO 2 was used as raw materials to manufacture the glass-matrix under different temperature. The samples with the richest glass phase were obtained at 1000 °C, and were used to solidify AgIs with different content of I − . The sample with 30 wt % I − possessed the highest amorphous index (0.62) at 600 °C. Element I was uniformly distributed, and the density reached to 3.06 g/cm 3 . This work highlights a simple way to solidify secondary iodine-waste at low temperature. Graphic abstract