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US 12,539,503 B2Granted
Environmentally friendly polymeric sorbent material for the extraction and determination of rare earth elements, thorium, and uranium
AssigneeThe University of Toledo
InventorsJon R. Kirchhoff, Sandhya Adhikari, Govind Sharma Shyam Sunder
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Abstract
A method for extracting a metal species from a solution is described, where the metal species comprises a rare earth element, Th, or U. The method involves the use of poly(caffeic acid) as a sorbent material. The poly(caffeic acid) may be crosslinked with a diamine crosslinker such as ethylenediamine.
Claims20
A method for extracting a metal from a solution, the method comprising:
- dispersing a sorbent material in an aqueous solution containing a metal species to form a dispersed solution in which the metal species coordinates with the sorbent material;
- and
- removing the sorbent material from the dispersed solution to extract the metal species from the aqueous solution;
- wherein the sorbent material comprises poly(caffeic acid);
- and
- wherein the metal species comprises a rare earth element, Th, or U.
3 more elements
A composition comprising poly(caffeic acid) dispersed in an aqueous solution containing a metal species comprising a rare earth element, Th, or U.
Dependencies are inferred from the claim text.