Environmental Progress & Sustainable Energy · 2017 · 42 citations · 6 references
EngineeringChemical EngineeringEnvironmental EngineeringSeparation ProcessesSeparation ScienceWaste ManagementE-waste ManagementE-waste RecoveryElectronic Waste ManagementElectronic Waste RecoveryRecyclingWaste DisposalDismantlingE-waste DismantlingE-waste DisposalE-waste RecyclingElectronic Waste RecyclingLeachingPrinted Circuit BoardsSelective Separation
Dismantling of waste printed circuit boards (WPCBs) is of great importance in the recycling chain of electronic wastes (e‐wastes), since there are lots of high‐value components and toxic substances contained in the WPCBs. In this work, effective dismantling was achieved by dissolving the lead‐tin solder into a leachant containing methanesulfonic acid (MSA) and H 2 O 2 . Different concentrations of H 2 O 2 and MSA as well as leaching time were investigated. The final optimization experiment scheme was obtained from the simulation with the help of Design‐Expert 8.0.6 software. A leachant containing 3.5 mol/L MSA and 0.5 mol/L H 2 O 2 with a reaction time of 45 min was regarded as the optimum conditions for the selective desoldering separation of electronic components (ECs) from the WPCBs. © 2017 American Institute of Chemical Engineers Environ Prog, 36: 873–878, 2017
6