In this study, a novel biosorbent was prepared by the modification of sodium alginate with thiosalicylic acid in the presence of calcium ions (TS-A). TS-A was then characterized and its removal performance for Cu(II) and Cd(II) ions from the aqueous solutions was investigated. The effects of batch and column parameters on the biosorption were systematically investigated. The obtained data from the biosorption results were well fitted by the pseudo-second-order kinetic and Langmuir isotherm models. The maximum biosorption capacities of TS-A were found as 426.9 mg g⁻¹ for Cu(II) ions and 592.9 mg g⁻¹ for Cd(II) ions. In the column system, the saturation points of TS-A were obtained as 180 min and 150 min for Cu(II) and Cd(II) ions, respectively. In conclusion, TS-A has provided the removal of heavy metal ions with superior performance by a smart biosorption method, offering advantages such as rapid kinetic and high biosorption capacities.

在这项研究中，通过在钙离子（TS-A）存在下用硫代水杨酸修饰藻酸钠制备了一种新型生物吸附剂。然后表征TS-A，研究其对水溶液中Cu（II）和Cd（II）离子的去除性能。系统地研究了批料和柱参数对生物吸附的影响。从生物吸附结果获得的数据已通过拟二阶动力学模型和Langmuir等温线模型很好地拟合。发现TS-A对Cu（II）离子的最大生物吸附能力为426.9 mg g ^-1和592.9 mg g ^-1Cd（II）离子。在柱系统中，对于Cu（II）和Cd（II）离子，TS-A的饱和点分别为180分钟和150分钟。总而言之，TS-A通过智能生物吸附方法提供了具有优异性能的重金属离子去除功能，并具有快速动力学和高生物吸附能力等优点。