Studies on copper(II) leaching from e-waste with hydrogen sulfate ionic liquids: Effect of hydrogen peroxide

As the recovery, conversion and reuse of metals is a crucial concept of waste-to-resources (WTR) within a circular economy, the study was undertaken to check the effectiveness of using a new leaching system, containing hydrogen sulfate ionic liquids (with dimethyloctylammonium (IL1), 1-octylimidazolium (IL2) or 2-methyl−1-octylimidazolium (IL3) cations) to dissolve Cu(II) from e-waste, i.e. printed circuit boards (PCBs). Metal (Cu(II), Ag(I),...