Maximizing the retention of radioactive iodine in the solidified body is the fundamental solution to handling iodine-containing silica gel waste. Herein, the waste was directly treated as one of the raw components of the glass, and the B–Bi–Zn–silica gel material was prepared at 550 °C. Research showed that silica gel was beneficial in increasing the density of the glass to 2.03 g·cm^–3. The addition of silica gel caused the formation of a new crystalline phase (Zn₂SiO₄) in the glass. The glass transition temperature of the B–Bi–Zn glass was 337 °C. The silica gel had no effect on the glass transition temperature of the glass but decreased the heat of the reaction of the material. In addition, it could be concluded from the infrared spectrum that silica gel had a significant effect on the structural unit of the B–Bi–Zn material, and the intensity of the structural unit in the absorption band of 400–1600 cm^–1 was weakened. The iodine element was uniformly distributed in the cured glass, and its leaching result of 7 days was 1.1 × 10^–4 g·m^–2·d^–1, indicating that the immobilized matrix of iodine-containing glass-ceramics was stable.

中文翻译：

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硅胶在含放射性碘玻璃凝固体形成中的作用研究：结构与性能


最大限度地保留固化体中的放射性碘是处理含碘硅胶废料的根本解决方案。本文将废料直接作为玻璃的原料成分之一，在550℃下制备B-Bi-Zn-硅胶材料。研究表明，硅胶有利于将玻璃的密度提高到2.03 g·cm ^–3 。硅胶的添加导致玻璃中形成新的结晶相（Zn ₂ SiO ₄ ）。 B-Bi-Zn玻璃的玻璃化转变温度为337℃。硅胶对玻璃的玻璃化转变温度没有影响，但降低了材料的反应热。另外，从红外光谱可以看出，硅胶对B-Bi-Zn材料的结构单元有显着影响，结构单元在400-1600 cm吸收带的强度 ^–1 被削弱了。碘元素在固化玻璃中分布均匀，7天浸出结果为1.1×10 ^–4 g·m ^–2 ·d ^–1 ，表明表明固定化含碘微晶玻璃基质稳定。