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Reducing Coal Waste and Gaining Valuable Resources

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. ....

United States , Mark Rigali , Guangping Xu , Xu Sandia , Yongliang Xiong , Environmental Science Technology , Sandia National Laboratories , Environmental Science ,

Food-grade solvent can be used to extract rare earth metals from coal ash

The method, if widely adopted, could turn coal ash from an environmental pariah into a commercially viable product, researcher says. ....

United States , Guangping Xu , Environmental Science , Foreign Policy ,