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A New Zealand Startup Is Using Microbes to Suck Solid Gold

When placed in a solution containing gold these bacteria bind to gold atoms and grab them. A key difference in these approaches is that while the INL and NUS researchers only use microbes for bioleaching Mint Innovation uses chemicals too.

Gold Dissolution from Ore with IodideOxidising Bacteria

Gold leaching from ore using iodideiodine mixtures is an alternative to gold cyanidation. This study evaluated the ability of iodideoxidising bacteria to solubilise gold from ore that was mainly

Gold extraction Wikipedia

Gold extraction. Gold miners excavate an eroded bluff with jets of water at a placer mine in Dutch Flat California sometime between 1857 and 1870. Gold extraction refers to the processes required to extract gold from its ores. This may require a combination of comminution mineral processing hydrometallurgical and pyrometallurgical processes

Bacteria produce gold by digesting toxic metals

High concentrations of heavy metals like copper and gold are toxic for most living creatures. This is not the case for the bacterium C. metallidurans which has found a way to extract valuable

Mining: Bacteria with Midas touch for efficient gold

Mining: Bacteria with Midas touch for efficient gold processing. Date: April 28 2017. Source: University of Adelaide. Summary: Special 39nuggetproducing 39 bacteria may hold the key to more

Bacteria Found to Thrive on Gold Scientific American

Bacteria engineered to lack the genes no longer formed dark haloes and their growth was stunted in the presence of gold. The team also isolated a chemical produced by the unengineered bacteria

Destruction of cyanide in gold mill effluents: biological

Gold mining operations use dilute solutions of sodium cyanide 100500 ppm . Sodium cyanide is highly soluble in water and under mildly oxidizing conditions dissolves the gold contained in the ore. Mining operations use a variety of chemicals for mining ore processing and water treatment.

Biodegradation of free cyanide by bacterial species isolated

Cyanide is a strong toxic chemical frequently used in various industrial processes including synthetic fiber production extraction of gold and silver coal processing and extractive metallurgy Boucabeille et al. 1994 . In the mining industry it is also widely used to recover gold residues after mercury amalgamation Carling et al. 2013 .

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