Electronic waste (e-waste) is the fastest-growing type of waste worldwide and contains significant levels of precious metals, rare earth elements, and basic elements that make it economically attractive. This type of waste presents a challenge in the metallurgical processing industry due to its heterogeneity, toxicity, and the environmental impact caused by its incorrect disposal by companies and individuals.

Their treatment with traditional solvents that are environmentally unfriendly affects the recovery of metals. In addition the practical application, recovery and recycling of the ionic liquids (ILs) are topics that align with the circular economy context, which is imperative to address today.

This study presents a comprehensive review of the use of ILs to recover metals from electronic waste, with an emphasis on the leaching stage. The advantages of using ILs in hydrometallurgy are their design properties and low toxicity, which would benefit the environment and human health. A simple economic evaluation is made to expand the use of ionic liquids in metal leaching. The physicochemical properties and their influence on the process according to the nature of the cation and anion are reported.

电子垃圾（电子垃圾）是全球增长最快的垃圾类型，含有大量的贵金属、稀土元素和使其具有经济吸引力的基本元素。这种类型的废物由于其异质性、毒性以及公司和个人不正确处置对环境造成的影响，在冶金加工业中提出了挑战。

用对环境不友好的传统溶剂处理它们会影响金属的回收。此外，离子液体 (IL) 的实际应用、回收和再循环是符合循环经济背景的主题，这是当今必须解决的问题。

本研究全面回顾了使用离子液体从电子废物中回收金属的方法，重点是浸出阶段。在湿法冶金中使用离子液体的优点是它们的设计特性和低毒性，这将有利于环境和人类健康。为扩大离子液体在金属浸出中的应用，进行了简单的经济评价。根据阳离子和阴离子的性质，报告了物理化学性质及其对过程的影响。