Abstract
The treatment of iodine wastes has been widely concerned. In this work, B2O3–Bi2O3 based material was used to immobilize the silver coated silica gel with different iodine loadings. Based on XRD results analyses, the sample with 90 mol% B2O3 was selected for iodine waste immobilization. XRD results represented that the sintering temperature of 500 °C was suitable to immobile iodine waste. The micro-structure of the sintered matrix mainly consists of the stretching vibration of [SiO4]. SEM-EDS results showed that the elements of Ag and I exist element aggregation in some regions, which indicates that part of AgI was immobilized in the glassy phase while the other was physically enclosed in the sintered matrix. This study provides certain valuable reference and experimental basis for the subsequent curing of iodine-containing silver coated silica gel with multicomponent glass.
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