Adsorption of Gold and Copper from Alkaline Glycine-based Leach Solutions using Activated Carbon
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This study evaluated and optimised the activated carbon adsorption (ACA) process for the recovery of metals from alkaline glycine leachates. The use of activated carbon for metals adsorption remains industry’s preferred choice for the recovery of precious metals, from dilute solutions. The adsorption behaviour of metal glycine complexes on activated carbon, which was studied through the use of isotherms and kinetics, confirmed that ACA can efficiently recover gold over copper from dilute glycine solutions.
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Adsorption behaviour of copper and gold glycinates in alkaline media onto activated carbon. Part 1: IsothermsTauetsile, P.; Oraby, Elsayed; Eksteen, Jacques (2018)© 2018 Elsevier B.V. Alkaline glycine/glycinate solutions have been shown to have significant potential in the leaching of gold and copper from ores, concentrates, and wastes bearing these metals. An attempt was made to ...
Adsorption behaviour of copper and gold Glycinates in alkaline media onto activated carbon. Part 2: KineticsTauetsile, P.; Oraby, Elsayed; Eksteen, Jacques (2018)The kinetics for the competitive adsorption of gold and copper onto activated carbon from synthetic alkaline glycine solutions was studied. The adsorption rate for both gold and copper at the initial stage was modelled ...
Activated carbon adsorption of gold from cyanide-starved glycine solutions containing copper. Part 1: IsothermsTauetsile, P.; Oraby, Elsayed; Eksteen, Jacques (2019)Cyanide-starved alkaline glycine solutions have been shown to have distinct advantages in terms of lower reagent consumption and detoxification needs, or leach rate and recovery, over cyanide- only and glycine-only leach ...