Transforming Toxic Arsenic Sludge into a Valuable Commodity
A new process can extract pure arsenic metal from groundwater treatment waste, turning a toxic byproduct into a valuable resource for green technologies and electronics.
According to researchers, including Case van Genuchten from the Geological Survey of Denmark and Greenland, this method offers a chance to create local, circular production of metallic arsenic, an element in high demand for green-energy technologies, while ensuring clean drinking water.
The new method has been labelled a critical raw material by the EU and US.
- Nearly all groundwater contaminated with arsenic is due to naturally occurring deposits of arsenic-containing minerals dissolving into it.
- The process was developed by Case van Genuchten and Kaifeng Wang, who have been working to tackle arsenic leaching from minerals into drinking water.
Author's summary: New process transforms toxic arsenic sludge into valuable metal.
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