#heavymetals — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #heavymetals, aggregated by home.social.
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#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-waste24 Oct 2024
https://physicsworld.com/a/eco-friendly-graphene-composite-recovers-gold-from-e-waste/
#SolarPunkSunday #NoGoldMining
#EWasteRecycling #MetalsExtraction #Electronics #RareEarthMinerals #Recycling #NewTechnology #ShrimpShells -
'The Nastiest Soils On Earth' Are Getting Recognized As A Bigger Problem
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https://phys.org/news/2024-11-nastiest-soils-earth-bigger-problem.html <-- shared technical article
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https://lnu.diva-portal.org/smash/record.jsf?pid=diva2%3A1895656&dswid=-9242 <-- link to doctoral thesis
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#acidsulfatesoils #acidrockdrainage #microbialecology #acidophiles #oxidation #sediments #genesequences #acidsulfate #soils #humanimpacts #risk #hazard #waterquality #ecosystem #health #geochemistry #microbiology #mitigation #sulfide #coast #coastal #water #hydrology #pH #acids #metals #rainfall #snowmelt #dissolution #precipitation #waterbodies #plants #fish #fisheries #heavymetals #aluminum #fishkill #mortality #oxidation #bioremediation -
Down on the Farm That Harvests Metal From Plants [phytomining]
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https://www.nytimes.com/2020/02/26/science/metal-plants-farm.html <-- shared media article
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[I know that the USGS has some direct research ongoing in this regard; bioremediation has been around for a long time, in a sense this is a natural extension (pun very much intended)]
#farming #mining #phytomining #tailings #bioremediation #geology #mining #mininggeology #minerals #nickel #plants #vegetation #smelter #accumulating #biology #flora #agromining #metals #heavymetals #biomass #hyperaccumulators #bioore #naturalresources #minerals -
Bristly Beard Lichen (Friday Fellow by Earthling Nature) https://earthlingnature.wordpress.com/2022/11/11/friday-fellow-bristly-beard-lichen/ #lichens #fungi
The #BristlyBeardLichen is very sensitive to #AirPollution, especially to #SulfurDioxide and nitrogen compounds. It has also shown the ability to bioaccumulate #HeavyMetals in its tissues. As a result, more recent studies are trying to turn it into a model species for #BioMonitoring of air #pollution.
