Functionalized Adsorbents for the Recovery of Rare Earth Elements from Aqueous Media
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United States of America Patent
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Issued Date -
Apr 13, 2017
app pub date -
Oct 13, 2016
filing date -
Oct 13, 2015
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status (Latency Note)
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Abstract
The disclosure relates to the design and synthesis of selected ligands, dendrimers, polymers and other solid phase substrates for selective chelation of rare earth elements (i.e. lanthanides), and use of those selective ligands for synthesis of resins, polymers and other types of solid supports for separation and recovery of lanthanides from aqueous media. Recovery of critical elements from aqueous media occurs in a simple two-step process: pre-concentration of REE on the adsorbent and recovery by acid elution. The present invention can be used for design of selective ligands immobilized on solid substrates for extraction of various constituents, such as lanthanides, actinides, radionuclides, trace metals, etc., from aqueous media.
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