Radiation Physics Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt.
Hot Laboratory Center, Egyptian Atomic Energy Authority (EAEA), P.O.13759, Cairo, Inshas, Egypt.
Sci Rep. 2023 Apr 11;13(1):5856. doi: 10.1038/s41598-023-32996-5.
Reclaimable adsorbents have an essential role in removing radionuclides from waste streams. Herein, zinc ferrite-humic acid ZFO/HA nanocomposite was synthesized for effective cesium and barium adsorption. The prepared ZFO/HA nanocomposite was analyzed using analytical techniques including XRD, FTIR, EDX, and SEM. From kinetic studies, the mechanism adsorption process follows the second model. The isotherm studies clarified that the Langmuir model fit the adsorption of both ions onto the prepared sample, and the monolayer capacities are equal to 63.33 mg/g and 42.55 mg/g for Ba(II) and Cs(I), respectively. The temperature parameter was also studied, and the adsorption reaction was spontaneous and endothermic. The maximum separation between two ions was achieved at pH 5 (αCs/Ba = 3.3).
可回收吸附剂在从废水中去除放射性核素方面发挥着重要作用。本文合成了锌铁氧体-腐殖酸 ZFO/HA 纳米复合材料，用于有效吸附铯和钡。采用 XRD、FTIR、EDX 和 SEM 等分析技术对制备的 ZFO/HA 纳米复合材料进行了分析。从动力学研究来看，吸附过程遵循二级模型。等温研究表明，Langmuir 模型适用于两种离子在制备样品上的吸附，单层容量分别为 63.33mg/g 和 42.55mg/g 用于 Ba(II) 和 Cs(I)。还研究了温度参数，吸附反应是自发的和吸热的。在 pH 5 时（αCs/Ba=3.3）可以实现两种离子的最大分离。
