Compost

Team Uses Corncobs, Compost to Salvage Rare Earth Elements

After soaking the materials in water (as shown in middle column), Penn State researchers chemically reacted shredded wood pulp, cotton paper and ground corncob and tomato peels to convert them into microproducts, nanoparticles and solubilized biopolymers (third column). Adding these microproducts or nanoparticles to solutions containing the rare earth element neodymium triggered the separation process, …

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