Highly selective recovery of gold and silver from E-waste via stepwise electrodeposition directly from the pregnant leaching solution enabled by the MoS2 cathode

D Wang, Y Liang, Y Zeng, C Liu, C Zhan… - Journal of Hazardous …, 2024 - Elsevier
The recycling of electronic waste, ie., waste Printed Circuit Boards (WPCBs), provides
substantial environmental and economic advantages. In fact, the concentration of valuable …

Enhanced gold recovery from the leaching solution by using porous activated carbon coated electrode: COMSOL simulation and experiments

Y Liang, J Li, P Chen, C Liu, J Ge, S Song… - Separation and …, 2025 - Elsevier
It is a great challenge to highly recover gold from the E-waste leaching solution due to the
low concentration and the resultant slow ion diffusion. In this research, COMSOL …

Modulating the carbon chain length of organic phosphine for the selective Au (I) recovery from a copper-ammonia-thiosulfate leaching solution

X Li, S Chen, Z Dai, X Hu, F Zi - Chemical Engineering Journal, 2024 - Elsevier
The selective recovery of gold ions from gold leaching solutions limits the industrial
application of the copper-ammonia (Cu 2+–NH 3)-thiosulfate system. Here, the influence of …

Gold recovery using porphyrin-based polymer from electronic wastes: Gold desorption and adsorbent regeneration

J Son, Y Hong, G Han, TS Nguyen, CT Yavuz… - Science of the Total …, 2020 - Elsevier
Electronic wastes containing precious metals have great potential as a sustainable source of
such metals. Separation and refining, however, remain complicated, and none of the …

The first effective utilization of activated carbon in gold thiosulfate system: A more eco-friendly, easier method for gold recovery and material regeneration

Y Chen, F Zi, X Hu, Y Lin, H Du, J Hu, P Yang… - Minerals …, 2020 - Elsevier
Employing activated carbon in the thiosulfate process has high potential applications for
extracting gold. However, formidable challenges must be overcome to achieve such an …

An integrated approach to evaluating the effect of associated minerals on copper ammoniacal thiosulfate leaching of a gold–bearing sulfide concentrate

JA Tamayo, AM Meléndez, JA Calderón - Hydrometallurgy, 2019 - Elsevier
This work proposes a method for the evaluation of the effect of galvanic interactions between
intergrown sulfide-mineral grains present in a thiosulfate leaching system, based on a …

Gold recovery from ammonia-thiosulfate leaching solution assisted by PEI-functionalized magnetite nanoparticles

JC Betancur, PM Montoya, JA Calderón - Hydrometallurgy, 2019 - Elsevier
This work describes a novel process for gold recovery from ammonia-thiosulfate leaching
solution utilizing polyethylenimine (PEI) coated magnetite nanoparticles (PEI-MNPs). In this …

Energy-efficient electrochemical recovery of gold enabled by a thiourea-based electrolyte system

J Son, JI Han, Y Hong, CT Yavuz - Journal of Environmental Chemical …, 2023 - Elsevier
The application of non-cyanide baths in electroplating for gold recovery has drawn
significant attention due to their clear benefits on the environment and human health. Among …

Effectively adsorb Au(S2O3)23− using aminoguanidine as trap** group from thiosulfate solutions

Y Yang, X Hu, F Zi, S Chen, L Zhao, X Li… - Environmental Science and …, 2024 - Springer
Thiosulfate gold leaching is one of the most promising green cyanide-free gold extraction
processes; however, the difficulty of recovering Au (I) from the leaching system hinders its …

Process mineralogy of refractory gold ore in thiosulfate solutions

JD Ospina-Correa, E Mejía-Restrepo… - Hydrometallurgy, 2018 - Elsevier
A mineralogical characterization was carried out in samples of refractory gold ore with 59
g/ton, according to fire assays, which were taken from a previous leaching process with …