Process for making modified DTPA-associated organosilica media for use in solid-liquid extraction of rare earth elements
AssigneeWayne State University
InventorsTimothy M. Dittrich, Matthew J. Allen, Mohammed Dardona, Jessica L. Hovey
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Abstract
A process for making modified diethylenetriaminepentaacetic acid (DTPA)-associated media for use in solid-liquid extraction of rare earth elements is disclosed. The process includes functionalizing DTPA with hydrophobic groups to form modified DTPA; dissolving the modified DTPA into a methanol solution; loading the modified DTPA solution to a solid support; rotating the modified DTPA-loaded solid support to allow for association; and removing the methanol to obtain the modified-DTPA-associated media.
Claims17
A modified DTPA-associated media for use in solid-liquid extraction, comprising modified diethylenetriaminepentaacetic acid (DTPA) chemically associated via hydrophobic interactions with a hydrophobic solid support, wherein the modified DTPA includes DTPA functionalized with hydrophobic groups.
A process for making modified diethylenetriaminepentaacetic acid (DTPA)-associated media for use in solid-liquid extraction of rare earth elements, comprising:
- functionalizing DTPA with hydrophobic groups to form modified DTPA;
- dissolving the modified DTPA into a methanol solution;
- loading the modified DTPA solution to a solid support;
- rotating the modified DTPA-loaded solid support to allow for association;
- and
- removing the methanol to obtain the modified DTPA-associated media;
- wherein the modified DTPA is chemically associated via hydrophobic interactions with the solid support.
A solid-liquid extraction sorbent, comprising:
- a modified DTPA-associated media including modified diethylenetriaminepentaacetic acid (DTPA) chemically associated with an organosilica solid support, wherein the modified DTPA includes DTPA functionalized with two hydrophobic groups;
- and
- wherein the two hydrophobic groups anchor the modified DTPA to the organosilica solid support through hydrophobic interactions.
Dependencies are inferred from the claim text.