#electronicwaste — Public Fediverse posts

#GoldExtraction from #EWaste gets 10 times more efficient with new sponge material

Researchers developed a nanoscale cross-dimensional composite material via self-assembly of two-dimensional graphene oxide and one-dimensional chitosan macromolecules.

By Prabhat Ranjan Mishra, Oct 27, 2024

"Researchers have developed a new type of material that’s 10 times more efficient at extracting gold from e-waste than previous adsorbents. Developed by chemists and materials scientists at the National University of Singapore, the material is a type of sponge made of #GrapheneOxide and #chitosan [shrimp shells].

"The material can reportedly transform the way gold is extracted from electronic wastes, which has been described so far as a dirty business with low yields and results in toxic #pollutants.

"The cheaper, cleaner and efficient method was tested by researchers using real e-waste provided by a recycling company."

[...]

"While the present work focused on gold, the team say the technique could be adapted to recover other valuable metals such as #silver, #platinum or #palladium from #ElectronicWaste or even #mining residues. And that is not all: as well as e-waste, the technology might be applied to a wider range of environmental cleaning efforts, such as filtering out #HeavyMetals from #PollutedWater sources or industrial effluents, reported Physics World."

Read more:
https://interestingengineering.com/innovation/gold-extraction-from-e-waste-sponge


Article in Physics World - Eco-friendly graphene composite recovers gold from e-waste

24 Oct 2024

https://physicsworld.com/a/eco-friendly-graphene-composite-recovers-gold-from-e-waste/

#SolarPunkSunday #NoGoldMining
#EWasteRecycling #MetalsExtraction #Electronics #RareEarthMinerals #Recycling #NewTechnology #ShrimpShells

ICYMI - From 2016

The Burning Truth Behind an #EWasteDump in #Africa

Ending the #toxic smoke rising from an iconic dump in #Ghana will take more than curbing Western waste

by Adam Minter
January 13, 2016

"They are some of the most iconic photos in environmental journalism: young African men, often shirtless, standing over small fires fueled by digital detritus imported from richer countries. The toxic smoke swirls around them and over #Agbogbloshie, the roughly 20-acre scrap yard in the heart of #AccraGhana, where these men live and work.

"During the last decade, some of the world’s most respected media organizations have transformed Agbogbloshie into a symbol of what’s believed to be a growing crisis: the export—or dumping—of electronic waste from rich, developed countries into Africa. It’s a concise narrative that resonates strongly in a technology-obsessed world. There’s just one problem: The story is not that simple..."

Read more:
https://www.smithsonianmag.com/science-nature/burning-truth-behind-e-waste-dump-africa-180957597/

#ElectronicWaste #SupportLegacyProducts #Consumerism #Capitalism #Crapitalism #CorporateColonialism
#PlannedObsolescence
#Landfills #RightToRepair #EnvironmentalRacism #WaterIsLife #SoilIsLife #RepairReuseRecycle
#Consumerism
#Anticonsumerism #EnvironmentalPollution