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Domestic source of elements important for commerce and national security
In a study, a harmless food-grade solvent has been used to extract rare-earth metals from coal ash, reducing the amount of ash without damaging the environment and at the same time increasing an important national resource.
The method, if widely adopted, could turn coal ash from an environmental pariah into a commercially viable product, researcher says.
In one of nature’s unexpected bounties, a harmless food-grade solvent has been used to extract highly sought rare-earth metals from coal ash, reducing the amo