Electronic e-waste (e-waste) is a growing problem worldwide. In 2019, total global
production reached 53.6 million tons, and is estimated to increase to 74.7 million tons by …

With the rapid growth of industrialization, water bodies are polluted with heavy metals and
toxic pollutants. In pursuit of removal of toxic pollutants from the aqueous environment …

Printed circuit boards (PCBs) represent one of the most complicated and valuable
components in electric and electronic equipment (EEE). Waste PCBs (WPCBs) contain more …

Cyanide is currently the predominant lixiviant for gold extraction. However, cyanide is highly
toxic, causing potential environmental hazards and high detoxification costs. This has …

Since the birth of cyanidation, it has been dominant in the gold extraction industry. Recently,
with the increasing awareness of environmental hazards and potential risks posed by the …

Scattered and precious metals (SPMs: Se, Te, Au, Ag, Pt, and Pd) play an irreplaceable role
in advanced methods and materials, and their global consumption has been growing in …

Synthesis of a hybrid graphene oxide based inverse spinel nickel ferrite (GONF) nano-
composite material and subsequent utilization in heavy metal removal from aqueous …

Glycine has recently gained plenty of attention in gold processing as an alternative lixiviant
to cyanide due to its non-toxicity, efficiency in metal dissolution as well as selectivity for …

Silver nanoparticles (AgNPs) exhibit broad spectrum antibacterial effect, but their cores after
use can persist in the environment, which presents a toxic effect on humans. To address this …

Waste printed circuit boards (WPCBs) are a complicated and valuable fraction of electric and
electronic waste. The recycling of them is critical to avoid environmental pollutions and to …