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Gold plating is often used in electronics, to provide a corrosion-resistant electrically conductive layer on copper, typically in electrical connectors and printed circuit boards. With direct gold-on-copper plating, the copper atoms tend to diffuse through the gold layer, causing tarnishing of its surface and formation of an oxide and/or ...
Delftia acidovorans is one of the few bacteria, along with Cupriavidus metallidurans, that can metabolize gold. [8] [2] Au 3+ is reduced extracellularly by the non-ribosomal secondary metabolite delftibactin. Delftibactin is a unique metabolite, as it can protect the bacteria from gold toxicity as well as reduce gold ions to solid form. [2]
Due to the explosive tendency of this compound, industrial techniques for extracting and purifying gold compounds are very few. There was a novel biogas extraction of precious metals from scrapped electronics that worked very well, but the creation of fulminating gold and other precious metal amines limits its widespread use. [11]
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Gold is important in the biotech field for applications such as mineral exploration, processing and remediation, development of biosensors and drug delivery systems, industrial catalysts, and for recovery of gold from electronic waste. [2]
Electronic waste (e-waste) is a global problem; especially since many developed countries, including the U.S., ship their discarded electronic devices to less developed parts of the world. Oftentimes, the e-waste is improperly dismantled and burned, producing toxic emissions harmful to waste site workers, children, and nearby communities.
The UK’s official coinmaker is making jewelry using the silver found in X-ray films.