The adsorption of cobalt ions was evaluated using sediment samples from water bodies to investigate the adsorption properties of sediment and the behavior of these natural materials in the presence of nuclear and industrial waste. The two sediments (S1 and S2) were treated to eliminate humic and fulvic acids and then they were characterized by several techniques. The minerals found in both the sediments (X-ray diffraction) were quartz and albite; plus, goethite and muscovite in S1, and kaolinite and montmorillonite in S2. Point of zero charge (PZC) of S1 and S2 was 6.00 and 5.22, respectively. The specific area of S1 (63.3 m²/g) is higher than S2 (1.5 m²/g). Adsorption kinetics data for S1 and S2 were best fitted to the pseudo second-order model. The removal efficiency of S1 for cobalt was 96% with an adsorption capacity (q_e) of 0.93 mg/g, and for S2 was 45% with a q_e of 0.40 mg/g. The experimental data of the adsorption isotherms were adjusted to Langmuir and Freundlich models for S1 and S2, respectively. The thermodynamic parameters (enthalpy, entropy, and Gibb's free energy) indicated that the adsorption processes were endothermic, spontaneous, and chemisorption mechanism. The results show that the adsorption capacities of the sediments depend on their composition. These water sediments have important adsorption properties for cobalt, and they can be used in the treatment of nuclear and industrial aqueous wastes.

使用水体中的沉积物样品评估了钴离子的吸附，以研究沉积物的吸附特性以及这些天然物质在核废料和工业废料存在下的行为。对这两种沉积物（S1和S2）进行了处理，以消除腐殖酸和黄腐酸，然后通过多种技术对其进行了表征。在两种沉积物中发现的矿物（X射线衍射）均为石英和钠长石；另外，S1中的针铁矿和白云母，S2中的高岭石和蒙脱石。S1和S2的零电荷点（PZC）分别为6.00和5.22。S1的比面积（63.3 m ² / g）高于S2（1.5 m ²/G）。S1和S2的吸附动力学数据最适合于伪二级模型。S1对钴的去除效率为96％，吸附容量（q _e）为0.93 mg / g，S2对Si的去除效率为45％，q _e0.40毫克/克。将吸附等温线的实验数据分别调整为Langmuir模型和Freundlich模型的S1和S2。热力学参数（焓，熵和吉布的自由能）表明吸附过程是吸热的，自发的和化学吸附机制。结果表明，沉积物的吸附能力取决于其组成。这些水沉积物对钴具有重要的吸附性能，可用于处理核和工业含水废物。