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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