This study provides an up-to-date review of
recycling of printed circuit boards (PCBs), specifically in hydrometallurgical
treatment. Waste printed circuit boards, which are rich in base and precious
metals, are the essential component of end-of-life electrical and electronic
equipment.
From the economic and environmental
perspectives, the efficient recycling of PCBs is of importance. For the
extraction of metals from PCBs, a large amount of work has been done to establish an environmentally friendly and
economic way to recover metals from PCBs based on physical,
pyrometallurgical and hydrometallurgical processes.
Among those processes, hydrometallurgy is a
promising treatment due to its low capital cost, high selectivity and lower
environmental impact. This review emphasizes the recycling of PCBs by physical
and hydrometallurgical treatments.
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