A new technology for separation and recovery of materials from waste printed circuit boards by dissolving bromine epoxy resins using ionic liquid

► WPCBs were heated in [EMIM+][BF4−] for recovering solider at 240 °C. ► The bromine epoxy resins in WPCBs were all dissolved in [EMIM+][BF4−] at 260 °C. ► Used [EMIM+][BF4−] is treated by water to obtain regeneration.