Polymers for metal extractions in carbon dioxide
- 7315 Crescent Ridge Dr., Chapel Hill, NC 27516
- 1130 Big Rock Loop, Los Alamos, NM 87544
- 103 Timber Hollow Ct. Apartment 323, Chapel Hill, NC 27514
- 1930 Camino Mora, Los Alamos, NM 87544
- 5810 Forest Ridge Dr., Durham, NC 27713
- 8530 Sommersweet La., Raleigh, NC 27612
A composition useful for the extraction of metals and metalloids comprises (a) carbon dioxide fluid (preferably liquid or supercritical carbon dioxide); and (b) a polymer in the carbon dioxide, the polymer having bound thereto a ligand that binds the metal or metalloid; with the ligand bound to the polymer at a plurality of locations along the chain length thereof (i.e., a plurality of ligands are bound at a plurality of locations along the chain length of the polymer). The polymer is preferably a copolymer, and the polymer is preferably a fluoropolymer such as a fluoroacrylate polymer. The extraction method comprises the steps of contacting a first composition containing a metal or metalloid to be extracted with a second composition, the second composition being as described above; and then extracting the metal or metalloid from the first composition into the second composition.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- DOE Contract Number:
- W-7405-ENG-36
- Assignee:
- DeSimone, Joseph M. (7315 Crescent Ridge Dr., Chapel Hill, NC 27516);Tumas, William (1130 Big Rock Loop, Los Alamos, NM 87544);Powell, Kimberly R. (103 Timber Hollow Ct. Apartment 323, Chapel Hill, NC 27514);McCleskey, T. Mark (1930 Camino Mora, Los Alamos, NM 87544);Romack, Timothy J. (5810 Forest Ridge Dr., Durham, NC 27713);McClain, James B. (8530 Sommersweet La., Raleigh, NC 27612);Birnbaum, Eva R. (1930 Camino Mora, Los Alamos, NM 87544)
- Patent Number(s):
- US 6176895
- OSTI ID:
- 873507
- Country of Publication:
- United States
- Language:
- English
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