On a plot of land rented from a rural village on the Malaysian side of the island of Borneo, the group has proved it at small scale. Every six to 12 months, a farmer shaves off one foot of growth from these nickel-hyper-accumulating plants and either burns or squeezes the metal out. After a short purification, farmers could hold in their hands roughly 500 pounds of nickel citrate, potentially worth thousands of dollars on international markets. — The New York Times
A thought-provoking report from Ian Morse of The New York Times highlights a burgeoning approach for harvesting necessary (and toxic) metals like nickel from soil through "hyper-accumulating" plants.
Morse checks in researchers from the University of Melbourne who are farming nickel-rich soils in Borneo using metal-absorbing plants that eat up the substance. Nickel is a key ingredient in a variety of electronic products and in building materials like stainless steel. The approach can extract metals from the soil directly with minimal processing and can potentially be used to clean up abandoned mining sites, as well.
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