Compositions containing poly ([gamma]glutamylcysteinyl)glycines

Patent · Tue Feb 18 04:00:00 EST 1992

OSTI ID:7207234

Jackson, P J; Delhaize, E; Robinson, N J; Unkefer, C J; Furlong, C

A method of removing heavy metals from aqueous solution, a composition of matter used in effecting the removal, and the apparatus used in effecting the removal are described. One or more of the polypeptides, poly ([gamma]glutamylcysteinyl)glycines, is immobilized on an inert material in particulate form. Upon contact with an aqueous solution containing heavy metals, the polypeptides sequester the metals, removing them from the solution. There is selectivity of poly ([gamma]glutamylcysteinyl)glycines having a particular number of monomer repeat units for particular metals. The polypeptides are easily regenerated by contact with a small amount of an organic acid, so that they can be used again to remove heavy metals from solution. This also results in the removal of the metals from the column in a concentrated form. 1 figs.

• DOE Contract Number: W-7405-ENG-36
• Assignee: Dept. of Energy, Washington, DC (United States)
• Patent Number(s): A; US 5089470
• Application Number: PPN: US 7-452013
• OSTI ID: 7207234
• Country of Publication: United States
• Language: English

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