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 …

Challenges of sustainable development, particularly 'living within limited infinity'and 'scarcity
of natural resources' have urged scientific community to develop innovative processes that …

The present communication deals with the leaching of gold and silver from the printed circuit
boards (PCBs) of waste mobile phones using an effective and less hazardous system, ie, a …

A new approach of recovering precious metals from printed circuit boards (PCBs) of mobile
waste by acidothiourea leaching followed by selective adsorption on low-cost and …

Over 25 alternative lixiviant processes to cyanide have been tested in the laboratory; some
of which have been successful for niche applications. The process conditions, applications …

Since the initial report of thiourea as a complexing reagent for gold leaching, considerable
research has been directed toward the use of thiourea as an alternative to cyanide for gold …

In this study, chitosan-grafted-polyacrylamide (Chi-g-PAM), a synthetic biocompatible
polymer was investigated as a selective depressant of iron sulfide minerals [ie, pyrite (FeS …

Reaction kinetics of gold dissolution in acid (pH 1–2) thiourea solutions using ferric sulfate
as the oxidant were investigated with the rotating disk technique. Experiments for the kinetic …

Drawing on recent experimental and commercial developments, this review reappraises
potential substitute leach reagents for cyanide in the gold mining sector. In addition to …

The use of galvanic interactions between zero-valent aluminum (ZVAl) and activated carbon
(AC) to recover gold (Au) ions is a promising technique to overcome the challenges due to …