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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9044739 B1

PDFFull Text
Date of Patent:
Jun. 02, 2015

Filed:

Mar. 27, 2014

Foam-based adsorbents having high adsorption capacities for recovering dissolved metals and methods thereof

Applicant:

Ut-battelle, Llc, Oak Ridge, TN (US);

Inventors:

Christopher J. Janke, Oliver Springs, TN (US);

Sheng Dai, Knoxville, TN (US);

Yatsandra Oyola, Oak Ridge, TN (US);

Assignee:

UT-Battelle, LLC, Oak Ridge, TN (US);

Attorney:

Warner Norcross & Judd LLP

Primary Examiner:

Ling Choi

Assistant Examiner:

Jessica E Whiteley

Int. Cl.
CPC ...
C08J 9/00 (2006.01); C08J 9/34 (2006.01); C08J 9/38 (2006.01); C08J 9/36 (2006.01); C08J 9/16 (2006.01); C08G 61/04 (2006.01); B01J 20/26 (2006.01); C08J 3/28 (2006.01); D02G 3/22 (2006.01); D02G 3/34 (2006.01); C08J 7/16 (2006.01); B01J 45/00 (2006.01); B01J 20/28 (2006.01); D06M 10/00 (2006.01); D06M 11/63 (2006.01); D06M 14/28 (2006.01); D06M 15/263 (2006.01); D06M 15/31 (2006.01); D06M 101/20 (2006.01);
U.S. Cl.
CPC ...
B01J 20/265 (2013.01); C08J 3/28 (2013.01); D02G 3/22 (2013.01); D02G 3/34 (2013.01); Y10T 428/2978 (2015.01); Y10T 428/2973 (2015.01); C08J 7/16 (2013.01); B01J 45/00 (2013.01); B01J 20/28023 (2013.01); D06M 10/008 (2013.01); D06M 11/63 (2013.01); D06M 14/28 (2013.01); D06M 15/263 (2013.01); D06M 15/31 (2013.01); D06M 2101/20 (2013.01); B01J 20/28033 (2013.01); C08J 9/36 (2013.01);
Abstract

Foam-based adsorbents and a related method of manufacture are provided. The foam-based adsorbents include polymer foam with grafted side chains and an increased surface area per unit weight to increase the adsorption of dissolved metals, for example uranium, from aqueous solutions. A method for forming the foam-based adsorbents includes irradiating polymer foam, grafting with polymerizable reactive monomers, reacting with hydroxylamine, and conditioning with an alkaline solution. Foam-based adsorbents formed according to the present method demonstrated a significantly improved uranium adsorption capacity per unit weight over existing adsorbents.

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