Transcription of Recovery of Gold, Silver, Palladium, and Copper …
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Recovery of Gold, Silver, Palladium, and Copper …
Abstract Printed circuit boards (PCBs) are currently being dumped in landfills or incinerated which is causing a serious environmental harm in the form of toxic gases or leached hazardous compounds. PCBs contain high amounts of precious metals; about 20 wt% Copper , wt% gold , wt% silver , and wt% palladium . The extraction of these metals from PCBs is both profitable and environmentally worthwhile. Hence, this study aims to design a commercial process to extract these four metals from PCBs of computers and mobile phones. This paper discusses the relevant market analysis and research that led to the selection of these metals and PCB sources.
B.2. Physical Separation Chemical behaviors of metals and nonmetals are extensively different when using chemical reagents or extraction solvents.
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