Abstract
AbstractReactive extraction of gold from alkaline aqueous cyanide solution into n‐decanol in the presence of Kryptofix 22 DD as complexing agent was studied using a stirred transfer cell. The study investigated the effects of carrier concentration and temperature on mass transfer rates. A two‐film model was proposed by considering film mass transfer resistances at the aqueous and organic phases. The model predicted adequately the experimental time‐concentration data at different carrier concentrations and temperatures. Experiments have also been carried out to extract gold in an emulsion system using the same carrier and a mixed solvent of kerosene and decanol.
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