The consensus is growing for the UN sustainable development goals regarding responsible consumption, production, and climate actions. Because of growth towards a digital society (“industry 4.0 revolution”), it is needed to have our resources and economies to be circular. The success also depends on appropriate management of critical raw materials, such as Rare Earth Elements (REEs). Here, a cost-effective recycling method for the recovery of single REEs from fluorescent powder (FP) with end-of-life lamp e-waste is presented with the additional benefit of having a much less environmental impact than mining. The recycling method involves a carefully designed sequential digestion of two phosphor components (YOX and LAP) and treating their leachates separately under specific hydrometallurgical conditions. The phosphors were targeted for Yttrium (Y), Europium (Eu), Terbium (Tb), Lanthanum (La), Cerium (Ce), and Gadolinium (Gd). On trace REEs basis, the leaching process with the FP showed >95% recovery for Eu, La, Ce, Y and Tb. The effective recycling was achieved to >99% purity for Y, Eu, and Tb in 1, 25, and 55 liquid-liquid extraction stages, respectively. To our knowledge, this is one of the first methods to leach and separate Tb from FP e-waste with near quantitative leaching efficiency and >99% purity.

关于负责任的消费，生产和气候行动的联合国可持续发展目标的共识正在增长。由于向数字社会的发展（“工业4.0革命”），需要使我们的资源和经济循环。成功还取决于对关键原材料（例如稀土元素（REE））的适当管理。在此，提出了一种具有成本效益的回收方法，该方法可从带有使用寿命终止的灯电子废物的荧光粉（FP）中回收单个REE，其好处是与采矿相比，对环境的影响要小得多。回收方法涉及精心设计的两种磷光体组分（YOX和LAP）的顺序消化，并在特定的湿法冶金条件下分别处理其渗滤液。荧光粉的目标是钇（Y），。（Eu），Ter（Tb），镧（La），铈（Ce）和Ga（Gd）。在痕量稀土元素的基础上，FP的浸出过程显示出Eu，La，Ce，Y和Tb的回收率> 95％。Y，Eu和Tb在1、25和55个液-液萃取阶段分别达到了> 99％的纯度有效回收。据我们所知，这是从FP电子垃圾中浸出和分离Tb的首批方法之一，具有接近定量的浸出效率和> 99％的纯度。