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Title: Removal of metal ions from aqueous solution

Abstract

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 unit 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 heayv metals from solution. This also results in the removal of the metals from the column in a concentrated form.

Inventors:
 [1];  [1];  [2];  [3];  [4]
  1. both Los Alamos, NM
  2. Durham, GB2
  3. Los Alamos, NM
  4. Seattle, WA
Publication Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM
OSTI Identifier:
867600
Patent Number(s):
US 4969995
Application Number:
07/451,860
Assignee:
United States of America as represented by United States (Washington, DC)
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
removal; metal; aqueous; solution; method; removing; heavy; metals; composition; matter; effecting; apparatus; polypeptides; poly; gamma; -glutamylcysteinyl; glycines; immobilized; inert; material; particulate; form; contact; containing; sequester; selectivity; particular; monomer; repeat; unit; easily; regenerated; amount; organic; acid; remove; heayv; results; column; concentrated; monomer repeat; inert material; heavy metal; solution containing; aqueous solution; particulate form; heavy metals; removing heavy; organic acid; repeat unit; polypeptides sequester; particular metals; concentrated form; containing heavy; easily regenerated; /210/502/

Citation Formats

Jackson, Paul J, Delhaize, Emmanuel, Robinson, Nigel J, Unkefer, Clifford J, and Furlong, Clement. Removal of metal ions from aqueous solution. United States: N. p., 1990. Web.
Jackson, Paul J, Delhaize, Emmanuel, Robinson, Nigel J, Unkefer, Clifford J, & Furlong, Clement. Removal of metal ions from aqueous solution. United States.
Jackson, Paul J, Delhaize, Emmanuel, Robinson, Nigel J, Unkefer, Clifford J, and Furlong, Clement. Tue . "Removal of metal ions from aqueous solution". United States. https://www.osti.gov/servlets/purl/867600.
@article{osti_867600,
title = {Removal of metal ions from aqueous solution},
author = {Jackson, Paul J and Delhaize, Emmanuel and Robinson, Nigel J and Unkefer, Clifford J and Furlong, Clement},
abstractNote = {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 unit 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 heayv metals from solution. This also results in the removal of the metals from the column in a concentrated form.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {11}
}

Patent:

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