Efficient removal and recovery of thorium from water resources is necessary to resolve the problem of radioactive contamination. To address this issue, magnetically separable Glu@MNPs have been fabricated and efficiently utilized for the removal of Th(IV). 99.40 % removal of Th(IV) by Glu@MNPs could attain an equilibrium state within 10 min at a dosage level of 6 mg for 20 ml of 50 mg/L thorium solution at pH 4 and 25 °C. It obeys Langmuir isotherm with maximum adsorption capacity of 636.94 mg g⁻¹, which is independent of temperature variation. Kinetically, the adsorptive performance of Glu@MNPs fits well in the pseudo-second-order equation. The high removal efficiency is due to the existence of several types of functional groups on the surface of Glu@MNPs, which provide electrostatic attraction, and vander wall forces between adsorbate and adsorbent. The optimum conditions obtained from Box-Behnken composite design model was well matched with batch adsorption studies. Further, the results obtained for removal of Th(IV) by UV–vis spectroscopy matched well with ICP-OES. The removal efficiency still remained high (85.65  %) even after 10 adsorption–desorption cycles. Thus, Glu@MNPs acts as a timesaving adsorbent for sequestration of Th(IV) from an aqueous media with excellent removal performance.

从水资源中有效去除和回收钍是解决放射性污染问题所必需的。为了解决这个问题，已经制造了可磁性分离的 Glu@MNPs 并有效地用于去除 Th(IV)。在 pH 4 和 25 °C 下，对于 20 ml 50 mg/L 钍溶液，在 6 mg 剂量水平下，Glu@MNPs 可在 10 分钟内去除 99.40% 的 Th(IV) 达到平衡状态。服从朗缪尔等温线，最大吸附量为636.94 mg g ⁻¹，它与温度变化无关。在动力学上，Glu@MNPs 的吸附性能很好地符合伪二阶方程。高去除效率是由于 Glu@MNPs 表面存在多种类型的官能团，它们提供静电吸引力，以及吸附质和吸附剂之间的范德壁力。从 Box-Behnken 复合设计模型获得的最佳条件与批量吸附研究非常匹配。此外，通过紫外-可见光谱去除 Th(IV) 获得的结果与 ICP-OES 匹配良好。 即使经过 10 次吸附-解吸循环后，去除效率仍然很高 (85.65 %)。因此，Glu@MNPs 可作为一种省时的吸附剂，用于从水性介质中螯合 Th(IV)，具有出色的去除性能。