Strontium-90 (t_1/2 = 29 y) is one of the most concerned isotopes in both nuclear accidents and reprocessing of nuclear fuel. In this study, the removal of strontium using low cost and valuable Dowex-HCR-S/S (DHS) resin was achieved. The kinetic and equilibrium sorption studies have been investigated using batch technique. The results of kinetic studies showed that the pseudo–second–order kinetic model was found to correlate well with the experimental data. Equilibrium data were also analyzed by sorption isotherm models indicating that the monolayer capacity of Sr(II) at equilibrium is 400.0 mg/g. It was concluded that resin has an efficient sorption capacity compared to many sorbents. The thermodynamic parameters of the removal (ΔH^o, ΔS^o, and ΔG^o) were also determined. The removal process was endothermic and spontaneous. The resin has been successfully applied for the removal of ⁸⁵Sr from organic liquid scintillator waste and some environmental waters such as tap water, river water, sea water and ground water samples. The present work concludes that the low-cost and commercial DHS resin used under these conditions has a major possibility as an efficacious material for the removal of ⁹⁰Sr from environmental and real radioactive wastewaters. It can therefore have a site in the treatment of radioactive liquid waste because it is of an affordable and commercially available retention material.

锶90（t _1/2  = 29  y）是核事故和核燃料后处理中最受关注的同位素之一。在这项研究中，去除锶的使用成本低，有价值d owex- ^ h CR-小号获得了/ S（DHS）树脂。动力学和平衡吸附研究已使用批处理技术进行了研究。动力学研究的结果表明，伪二级动力学模型与实验数据具有很好的相关性。还通过吸附等温线模型分析了平衡数据，表明平衡状态下Sr（II）的单层容量为400.0 mg / g。结论是，与许多吸附剂相比，树脂具有有效的吸附能力。去除的热力学参数（ΔH ^Ò，ΔS ^Ó和ΔG ^ö）也确定。去除过程是吸热的并且是自发的。该树脂已成功应用于去除⁸⁵来自有机液体闪烁体废物和一些环境水（例如自来水，河水，海水和地下水样品）的锶。本工作的结论是，在这些条件下使用的低成本商业DHS树脂作为从环境和实际放射性废水中去除⁹⁰ Sr的有效材料，具有很大的可能性。因此，它可以在放射性液体废物的处理中占有一席之地，因为它是负担得起且可商购的保留材料。