Due to the wide applications, limited supply, and high demand, sustainable utilization of indium has become an important task. In this study, the recovery of indium from acidic extractant solutions of ITO scraps using aluminum (Al) powder was investigated. The cementation reaction of indium from HCl solution was completed within 10 min and it could be described by pseudo-first-order kinetic model. Effective recovery of indium (91.69%) at aluminum dose of 5 g/L and 25 °C was found in HCl solution. Recovery efficiency increased with aluminum dose. Results from cyclic voltammetry were used to provide information why cementation reactions did not work in H₂SO₄ or HNO₃ solutions. Indium recovery by aluminum cementation could be an alternative process, which is simple and efficient. However, there are some drawbacks, e.g., cementation reaction was not specific as tin was recovered simultaneously with indium from solutions. Furthermore, removal and separation of indium deposit on aluminum surfaces could be another issue.

由于广泛的应用，有限的供应和高需求，铟的可持续利用已成为重要的任务。在这项研究中，研究了使用铝（Al）粉从ITO废料的酸性萃取液中回收铟的方法。铟在HCl溶液中的胶结反应在10分钟内完成，可以用拟一级动力学模型描述。在HCl溶液中，铝剂量为5 g / L和25°C时，有效回收了铟（91.69％）。回收效率随铝剂量的增加而增加。循环伏安法的结果用于提供信息，说明为什么胶结反应在H ₂ SO ₄或HNO _3中不起作用解决方案。通过铝胶结法回收铟可以是一种简单而有效的替代方法。但是，存在一些缺陷，例如，由于从溶液中同时回收了锡和铟，因此胶凝反应不是特定的。此外，去除和分离铝表面上的铟沉积物可能是另一个问题。