Porphyry ores and E-wastes/WEEE are two of the most important copper-bearing materials
on the planet. Over 60% of world copper output comes from porphyry copper ores while E …

Waste will become the major resource in the future circular economy. In particular, E-waste
is a major sector growing at an annual rate of about 2 million tonnes (Mt) with rising users of …

This study has attempted to ascertain the linkages between circular bio-economy
(CirBioeco) and recycling of electronic (e-) waste by applying microbial activities instead of …

Advanced technologies of electronics industries have led to environmental contamination
concerns, especially waste print circuit boards containing a very high concentration of …

Critical metals are key raw materials for new generation clean energy production. The
extraction of critical metals often follows the difficult processing of primary ores and they are …

The metal resource crisis and the inherent need for a low-carbon circular economy have
driven the rapid development of e-waste recycling technology. High-value waste printed …

This study presents an optimized leaching and electrowinning process for the recovery of
copper from waste printed circuit boards including studies of chemical consumption and …

BACKGROUND Waste printed circuit boards (WPCBs) are a resource containing a wide
array of metals and are of great importance because their metal concentration is much …

As the recovery, conversion and reuse of metals is a crucial concept of waste-to-resources
(WTR) within a circular economy, the study was undertaken to check the effectiveness of …

This research focused on batch experiment using a new generation of chelating resins via
an ion exchange process to describe the metabolic adsorption and desorption capacity onto …