首页|A review on adsorption mechanism of gold cyanide complex onto activation carbon
A review on adsorption mechanism of gold cyanide complex onto activation carbon
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NSTL
Elsevier
? 2022 The Korean Society of Industrial and Engineering ChemistryGold is an essential metal in the economy and technologies. Most of the gold is produced from mining and cyanidation is the primary method used for gold extraction, with Au(CN)2- being the product. Activated carbon adsorption has been the primary commercial approach to recover gold from Au(CN)2- solution since the 1970 s. In the 21st century, new materials exploration and many experimental and modeling works were conducted to understand more of the adsorption mechanisms of Au(CN)2- onto activated carbon. In this paper, we reviewed the recent materials for gold recovery, such as activated carbon materials, graphene based-materials, and a few other materials. Experimental and modeling studies related to the adsorption mechanism of Au(CN)2- onto activated carbon were also reviewed, which provided a better understanding of the adsorption process. The kinetics of Au(CN)2- adsorption, the role of structural defects and pore size in improving the loading capacity and were also discussed.
NSTL
Elsevier
