Recently, there has been an increasing concern in finding sorbents for radionuclide removal from natural sources. AS-BFS sorbent (aluminum silicate composites derived from blast furnace slag) is a suitable candidate for this purpose; due to economic and environmental reasons. Blast furnace slag (BFS) is a by-product of the iron and steel industry plants. The development of a cost-effective route for recycling and utilization assessment of BFS is an urgent task. AS-BFS was prepared from BFS and its physicochemical properties were determined. The elemental composition of the AS-BFS is mainly oxygen (44%), Si (34%), and Al (19%), with traces of titanium, iron, chloride, and calcium. Experimental potentiality regarding sorption characteristics of AS-BFS to thorium ions was explored via the batch method. AS-BFS showed good adsorption capacity for thorium (obtained after 240 min) from aqueous streams (39.7 mg/g). The sorption process is fitted to the mono-layer adsorption model at optimum conditions. It was also proved that adsorption kinetics follows the pseudo-second-order model. The desorption results revealed that thorium ions (93%) could be eluted using 1M HNO₃. Hence, the research work indicates that the thorium sorption method with AS-BFS is cost-effective, efficient, and recommended for thorium removal from natural sources.

最近，人们越来越关注寻找从天然来源中去除放射性核素的吸附剂。AS-BFS 吸附剂（源自高炉矿渣的硅酸铝复合材料）是用于此目的的合适候选物；由于经济和环境原因。高炉矿渣 (BFS) 是钢铁工业工厂的副产品。开发一种具有成本效益的 BFS 回收利用评估路线是一项紧迫的任务。由 BFS 制备 AS-BFS 并测定其理化性质。AS-BFS 的元素组成主要是氧 (44%)、Si (34%) 和 Al (19%)，还有痕量的钛、铁、氯化物和钙。通过批量方法探索了 AS-BFS 对钍离子吸附特性的实验潜力。AS-BFS 对来自水流 (39.7 mg/g) 的钍（240 分钟后获得）显示出良好的吸附能力。在最佳条件下，吸附过程符合单层吸附模型。还证明吸附动力学遵循拟二级模型。解吸结果表明使用 1M HNO 可以洗脱钍离子 (93%)₃ . 因此，研究工作表明，采用 AS-BFS 的钍吸附方法具有成本效益、效率高，推荐用于从天然来源中去除钍。