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Organic/inorganic nanocomposites, methods of making, and uses as a permeable reactive barrier

Patent ·
OSTI ID:909394
 [1];  [1]
  1. Idaho Falls, ID
+ Show Author Affiliations
Nanocomposite materials having a composition including an inorganic constituent, a preformed organic polymer constituent, and a metal ion sequestration constituent are disclosed. The nanocomposites are characterized by being single phase, substantially homogeneous materials wherein the preformed polymer constituent and the inorganic constituent form an interpenetrating network with each other. The inorganic constituent may be an inorganic oxide, such as silicon dioxide, formed by the in situ catalyzed condensation of an inorganic precursor in the presence of the solvated polymer and metal ion sequestration constituent. The polymer constituent may be any hydrophilic polymer capable of forming a type I nanocomposite such as, polyacrylonitrile (PAN), polyethyleneoxide (PEO), polyethylene glycol (PEG), polyvinyl acetate (PVAc), polyvinyl alcohol (PVA), and combinations thereof. Nanocomposite materials of the present invention may be used as permeable reactive barriers (PRBs) to remediate contaminated groundwater. Methods for making nanocomposite materials, PRB systems, and methods of treating groundwater are also disclosed.
Research Organization:
Bechtel BWXT Idaho, LLC
Sponsoring Organization:
United States Department of Energy
DOE Contract Number:
AC07-99ID13727
Assignee:
Battelle Energy Alliance, LLC (Idaho Falls, ID)
Patent Number(s):
7,217,755
Application Number:
10/732,863
OSTI ID:
909394
Country of Publication:
United States
Language:
English

References (8)

Examination of the physical properties of polyphosphazene-silicate nanocomposites using novel synthetic strategies journal January 2002
Hybrid Nanocomposite Materials?between inorganic glasses and organic polymers journal June 1993
Determination of Cs-137 in environmental water by ion-exchange chromatography journal May 1996
Composite ion exchanger with ammonium molybdophosphate and its properties journal May 1990
Evaluation of alternative designs for an injectable subsurface barrier at the Brookhaven National Laboratory Site, Long Island, New York journal October 1999
Organic/Inorganic Hybrid Network Materials by the Sol−Gel Approach journal January 1996
A New Granular Composite with High Selectivity for Cesium Ion Prepared from Phosphomolybdic Acid Hydrate and Inorganic Porous Material journal August 1999
Adsorption studies of cesium on a new inorganic exchanger ammonium molybdophosphate-alumina (AMP-Al2O3) journal October 1999

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36 MATERIALS SCIENCE