Rationally designed mineralization for selective recovery of the rare earth elements

Takaaki Hatanaka, Akimasa Matsugami, Takamasa Nonaka, Hideki Takagi, Fumiaki Hayashi, Takao Tani and Nobuhiro Ishida ()
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Takaaki Hatanaka: Toyota Central R&D Labs., Inc.
Akimasa Matsugami: NMR Facility Support Unit, RIKEN Center for Life Science Technology
Takamasa Nonaka: Toyota Central R&D Labs., Inc.
Hideki Takagi: Toyota Central R&D Labs., Inc.
Fumiaki Hayashi: NMR Facility Support Unit, RIKEN Center for Life Science Technology
Takao Tani: Toyota Central R&D Labs., Inc.
Nobuhiro Ishida: Toyota Central R&D Labs., Inc.

Nature Communications, 2017, vol. 8, issue 1, 1-10

Abstract: Abstract The increasing demand for rare earth (RE) elements in advanced materials for permanent magnets, rechargeable batteries, catalysts and lamp phosphors necessitates environmentally friendly approaches for their recovery and separation. Here, we propose a mineralization concept for direct extraction of RE ions with Lamp (lanthanide ion mineralization peptide). In aqueous solution containing various metal ions, Lamp promotes the generation of RE hydroxide species with which it binds to form hydrophobic complexes that accumulate spontaneously as insoluble precipitates, even under physiological conditions (pH ∼6.0). This concept for stabilization of an insoluble lanthanide hydroxide complex with an artificial peptide also works in combination with stable scaffolds like synthetic macromolecules and proteins. Our strategy opens the possibility for selective separation of target metal elements from seawater and industrial wastewater under mild conditions without additional energy input.

Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15670

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DOI: 10.1038/ncomms15670

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