E-Waste-Eating Protein 'Creates' Rare Earth Elements
Phoenix666 writes:
Lawrence Livermore National Laboratory (LLNL) researchers, in collaboration with Pennsylvania State University (PSU) and Idaho National Laboratory (INL), have designed a new process, based on a naturally occurring protein, that could extract and purify rare earth elements (REE) from low-grade sources. It could offer a new avenue toward a more diversified and sustainable REE sector for the United States.
The protein, lanmodulin, enables a one-step extraction and purification of REEs from complex metal mixtures, including electronic waste and coal byproducts.
[...] In 2018, lanmodulin produced by certain bacteria was isolated and characterized by professor Joseph Cotruvo's team at PSU. It is the only known macro chelator that has naturally evolved to reversibly sequester REE ions. Classic macromolecules sequester elements like iron or calcium, but do not selectively sequester REEs. The LLNL and PSU teams investigated lanmodulin's solution chemistry and potential use for industry-oriented applications. Their work offers direct evidence that lanmodulin forms highly stable and water-soluble complexes across the lanthanide series while exhibiting minimal affinity for most non-REEs.
China recently threw world markets into turmoil by restricting exports of Rare Earth Elements.
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