Precious metal recovery from waste printed circuit boards using cyanide and non-cyanide lixiviants–a review

A Akcil, C Erust, CS Gahan, M Ozgun, M Sahin… - Waste management, 2015 - Elsevier
Waste generated by the electrical and electronic devices is huge concern worldwide. With
decreasing life cycle of most electronic devices and unavailability of the suitable recycling …

[HTML][HTML] Review of gold leaching in thiosulfate-based solutions

XIE Feng, J Chen, W Jian, W Wei - … of Nonferrous Metals Society of China, 2021 - Elsevier
Numerous non-cyanide leaching lixiviants have been developed, among which thiosulfate is
considered the most promising alternative to cyanide due to its non-toxicity, low price, high …

[HTML][HTML] A review of thiosulfate leaching of gold: Focus on thiosulfate consumption and gold recovery from pregnant solution

B Xu, W Kong, Q Li, Y Yang, T Jiang, X Liu - Metals, 2017 - mdpi.com
Thiosulfate leaching is a promising alternative to cyanidation, and the main hindrances for
its wide commercial application are the high thiosulfate consumption and the difficult …

Colorimetric assay for lead ions based on the leaching of gold nanoparticles

YY Chen, HT Chang, YC Shiang, YL Hung… - Analytical …, 2009 - ACS Publications
A colorimetric, label-free, and nonaggregation-based gold nanoparticles (Au NPs) probe
has been developed for the detection of Pb2+ in aqueous solution, based on the fact that …

Synergistical thiourea and thiosulfate leaching gold from a gold concentrate calcine with copper-ammonia catalysis

Y Lin, X Hu, F Zi, Y Chen, S Chen, X Li, L Zhao… - Separation and …, 2023 - Elsevier
Thiosulfate leaching is a non-toxic and eco-friendly alternative method to cyanidation.
However, thiosulfate leaching was used to leach gold from the gold concentrate calcine, and …

A review of ammoniacal thiosulfate leaching of gold: An update useful for further research in non-cyanide gold lixiviants

XM Zhang, G Senanayake - Mineral Processing and Extractive …, 2016 - Taylor & Francis
This literature review provides an update of ammoniacal thiosulfate as a potential lixiviant of
gold, the history of thiosulfate leaching and recent progress on thiosulfate leaching of gold …

A review of factors affecting gold leaching in non-ammoniacal thiosulfate solutions including degradation and in-situ generation of thiosulfate

O Sitando, G Senanayake, X Dai, AN Nikoloski… - Hydrometallurgy, 2018 - Elsevier
Cyanide has been used for more than a century as a preferred lixiviant for extracting gold
from ores and concentrates. While cyanide is very effective in treating certain ores and …

Colorimetric detection of trace copper ions based on catalytic leaching of silver-coated gold nanoparticles

T Lou, L Chen, Z Chen, Y Wang… - ACS applied materials & …, 2011 - ACS Publications
A colorimetric, label-free, and nonaggregation-based silver coated gold nanoparticles
(Ag/Au NPs) probe has been developed for detection of trace Cu2+ in aqueous solution …

“Turn-on” fluorescence detection of lead ions based on accelerated leaching of gold nanoparticles on the surface of graphene

X Fu, T Lou, Z Chen, M Lin, W Feng… - ACS Applied Materials & …, 2012 - ACS Publications
A novel platform for effective “turn-on” fluorescence sensing of lead ions (Pb2+) in aqueous
solution was developed based on gold nanoparticle (AuNP)-functionalized graphene. The …

A review of gold extraction using noncyanide lixiviants: Fundamentals, advancements, and challenges toward alkaline sulfur-containing leaching agents

C Sun, X Zhang, J Kou, Y Xing - International Journal of Minerals …, 2020 - Springer
Alkaline sulfur-containing lixiviants, including thiosulfate, polysulfides, and alkaline sulfide
solutions, stand out as a promising class of alternatives to cyanide because of their low …