The adsorption of rare-earth elements (cerium and scandium) on pristine and nanomodified activated carbons in sulfuric acid solutions simulating the composition of multi-metallic ore leaching solutions was studied. New applications of scandium and cerium in industry, which constitute the main segment of wastewater pollution, were described. Various materials used to extract target metals were considered. A hybrid material based on carbon nanotubes-modified coconut shell activated carbon was proposed, and its structural and physico-chemical characteristics were described. The kinetic parameters of the adsorption of the rare earth elements studied, as well as adsorption rate constants, were determined. The optimum adsorption time was found to be 60 min. It was established that the process of adsorbing the cerium and scandium ions is driven by mixed diffusion, and the adsorption kinetics can also be satisfactorily described using the pseudo-first order model for all the ions. Thus, both physical adsorption and chemical interactions among the metal ions and the adsorbent functional groups can be assumed to take place during the extraction of the cesium and scandium ions.

研究了模拟多金属矿石浸出溶液组成的硫酸溶液中原始和纳米改性活性炭对稀土元素（铈和scan）的吸附。介绍了scan和铈在工业中的新应用，它们构成了废水污染的主要部分。考虑了用于提取目标金属的各种材料。提出了一种基于碳纳米管改性的椰子壳活性炭的杂化材料，并对其结构和理化特性进行了描述。确定了研究的稀土元素的吸附动力学参数，以及吸附速率常数。发现最佳吸附时间为60分钟。已经确定，铈和scan离子的吸附过程是通过混合扩散来驱动的，而且对于所有离子，都可以使用拟一阶模型来令人满意地描述其吸附动力学。因此，可以假定在铯和scan离子的萃取过程中，金属离子与吸附剂官能团之间发生了物理吸附和化学相互作用。