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Title: Removal of metal ions from aqueous solution

A method of removing heavy metals from aqueous solution, a composition of matter used in effecting said removal, and apparatus used in effecting said removal. 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.
Authors:
 [1] ;  [1] ;  [2] ;  [1] ;  [3]
  1. (Los Alamos, NM)
  2. (Durham, GB2)
  3. (Seattle, WA)
Publication Date:
OSTI Identifier:
867309
Report Number(s):
US 4909944
DOE Contract Number:
W-7405-ENG-36
Resource Type:
Patent
Research Org:
Los Alamos National Laboratory (LANL), Los Alamos, NM
Country of Publication:
United States
Language:
English
Subject:
removal; metal; aqueous; solution; method; removing; heavy; metals; aqueous; solution; composition; matter; effecting; removal; apparatus; effecting; removal; polypeptides; poly; gamma; -glutamylcysteinyl; glycines; immobilized; inert; material; particulate; form; contact; aqueous; solution; containing; heavy; metals; polypeptides; sequester; metals; removing; solution; selectivity; poly; gamma; -glutamylcysteinyl; glycines; particular; monomer; repeat; units; particular; metals; polypeptides; easily; regenerated; contact; amount; organic; acid; remove; heavy; metals; solution; results; removal; metals; column; concentrated; form; monomer repeat; inert material; heavy metal; heavy metal; heavy metal; solution containing; aqueous solution; aqueous solution; aqueous solution; particulate form; heavy metals; heavy metals; heavy metals; removing heavy; organic acid; repeat unit; remove heavy; polypeptides sequester; particular metals; concentrated form; containing heavy; easily regenerated /210/