Abstract
Given the high growth of e-waste around the world and the environmental and health risks associated with it, research on optimal and green methods of e-waste recycling is of great importance in order to find solutions to this global crisis. In particular are techniques that are economically attractive in addition to solving problems. In this paper, our research team has collected some recent methods of metal recycling in which ionic liquids (ILs) play a main member in the extraction process. The advantages of ILs include high selectivity, short operating temperature, lower relative toxicity, multiple use, and minimal waste generation. The results of this research are also compared with the results of previous studies. We have done special research on ILs used in leaching processes and applied in liquid-liquid extraction, and electrodeposition of metal in IL. Also listed in this paper are some experimental processes that can be tested in e-waste and secondary sources recycling. Some of which can be used on an industrial scale. Graphical abstract
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