— Recovery of gold from ores using bacteria and fungi is becoming increasingly popular due to their easy handling, their quick adaption to metals, and the high-performance metal dissolution of metabolites. Recovery of heavy metals through microbial mobilisation is an alternative to the gold dissolution processes.

In this review, we highlight the value of metal resources in the printed circuit boards (PCBs) commonly found in end-of-life electronics, the differences between primary (ore) mining applications and secondary ('urban') mining, and the variety of metallurgical separations, in particular those that have the potential to selectively and sustainabl...

 — Called electrodeposition-redox replacement (EDRR), the new process combines the best of two common methods for extracting leached gold: electrolysis, which uses electric currents to reduce gold or other metals present in the leaching solution, and cementation, which adds particles of other metals to the solution to react with the gold.

 — A techno-economic analysis of the e-LLE system demonstrated a substantial lowering of the cost of the gold-recovery process, with promising applications for the recovery of low-grade gold.

 — Gold recovery is challenging due to e-waste complexity and very low gold content. Alternative methods for gold leaching require much effort to scale up applications. Gold separation using smart bioadsorbents can simplify gold recovery.

 — This article describes an innovative method for recovery of minor concentrations of gold from hydrometallurgical solutions by repetitive Electrochemical Deposition-Redox Replacement...

 — Here we report an additive-induced gold recovery paradigm based on precisely controlling the reciprocal transformation and instantaneous assembly of the second-sphere coordinated adducts formed...

 — Selective recovery of gold from electronic waste using mild reagents is a challenge. Now a photocatalytic technology is reported to enable highly selective gold dissolution through solvent pH...

 — Electrostatic separation is a specialized technique used in mineral processing to separate minerals based on their electrical conductivity. This method is particularly effective for fine-grained minerals that cannot be easily separated using other techniques like magnetic separation.

 — Gold recovery. Hydrometallurgy. Printed circuit boards. Recycling. Secondary sources. 1. Introduction. Since early modern science time, yellow metals have been rendering a significant role in society. Naturally, it is found to be a free metal in tellurides and often coupled with pyrite, quartz, and pyrrhotite.