A number of optimal parameters determining the efficiency and rate of the strontium removal by a granular sorbent synthesized by the interaction of KMnO4 and concentrated H2O2 solution have been determined. The optimal drying temperature was found to be 400 °C at an average grain size of 0.1–0.2 mm. The average value of the strontium distribution coefficient in seawater equaled to 1.4–1.5 × 103 mL/g at the V/m ratio of 1000 mL/g ratio. The maximum value of adsorption in a single-component solution calculated using the Langmuir equation was equal to 1.0–1.1 mmol/g and corresponded to total dynamic exchange capacity. As the number of sorption-desorption cycles increased, total dynamic exchange capacity gradually decreased. The efficiency of Sr-90 removal from real liquid radioactive waste streams has been evaluated.

中文翻译：

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锶在粒状氧化锰上的吸附研究

通过 KMnO4 和浓 H2O2 溶液相互作用合成的颗粒吸附剂，确定了去除锶的效率和速率的许多最佳参数已经确定。发现最佳干燥温度为 400 °C，平均粒度为 0.1-0.2 mm。在 V/m 比为 1000 mL/g 时，海水中锶分配系数的平均值等于 1.4-1.5 × 103 mL/g。使用朗缪尔方程计算的单组分溶液中的最大吸附值等于 1.0-1.1 mmol/g，对应于总动态交换容量。随着吸附-解吸循环次数的增加，总动态交换容量逐渐下降。已经评估了从真实液体放射性废物流中去除 Sr-90 的效率。