skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Polymers for metal extractions in carbon dioxide

Patent ·
OSTI ID:873507
 [1];  [2];  [3];  [4];  [5];  [6];  [4]
  1. 7315 Crescent Ridge Dr., Chapel Hill, NC 27516
  2. 1130 Big Rock Loop, Los Alamos, NM 87544
  3. 103 Timber Hollow Ct. Apartment 323, Chapel Hill, NC 27514
  4. 1930 Camino Mora, Los Alamos, NM 87544
  5. 5810 Forest Ridge Dr., Durham, NC 27713
  6. 8530 Sommersweet La., Raleigh, NC 27612
+ Show Author Affiliations

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

References (13)

Extraction of Toxic Heavy Metals Using Supercritical Fluid Carbon Dioxide Containing Organophosphorus Reagents journal May 1997
High solubility of UO2(NO3)2·2TBP complex in supercritical CO2 journal January 1998
Analytical-Scale Supercritical Fluid Extraction journal June 1990
A Comparison of Liquid and Supercritical Carbon Dioxide as an Extraction Solvent for Plating Bath Treatment journal January 1998
Correlation between Extraction Equilibrium of Uranium(VI) and Density of CO 2 Medium in a HNO 3 /Supercritical CO 2 −Tributyl Phosphate System journal April 1998
New fluorinated hydroxamic acid reagents for the extraction of metal ions with supercritical CO2 journal May 1997
Solubilities of Copper(II) and Chromium(III) .beta.-Diketonates in Supercritical Carbon Dioxide journal November 1995
Liquid/Solid Extraction of Acetylacetone Chelates with Supercritical Carbon Dioxide journal May 1990
Extraction of lanthanides from acidic solution using tributyl phosphate modified supercritical carbon dioxide journal July 1994
Solubility of Organophosphorus Metal Extractants in Supercritical Carbon Dioxide journal February 1998
Separation of metal-containing compounds by supercritical fluid chromatography journal September 1987
Solubility of metal chelates and their extraction from an aqueous environment via supercritical CO2 journal May 1997
Synthesis of Fluoropolymers in Supercritical Carbon Dioxide journal August 1992

Similar Records

Carbon dioxide-soluble polymers and swellable polymers for carbon dioxide applications
Patent · Tue Jun 08 00:00:00 EDT 2004 · OSTI ID:873507
+6 more
Fluid extraction
Patent · Tue Oct 12 00:00:00 EDT 1999 · OSTI ID:873507
Extraction of metals using supercritical fluid and chelate forming ligand
Patent · Tue Mar 24 00:00:00 EST 1998 · OSTI ID:873507

Related Subjects

polymers
metal
extractions
carbon
dioxide
composition
useful
extraction
metals
metalloids
comprises
fluid
preferably
liquid
supercritical
polymer
bound
thereto
ligand
binds
metalloid
plurality
locations
chain
length
ligands
copolymer
fluoropolymer
fluoroacrylate
method
steps
contacting
containing
extracted
described
extracting
supercritical carbon
method comprises
carbon dioxide
composition containing
composition useful
chain length
method comprise
extraction method
metal extraction
/75/423/524/526/