Removal of metal ions from aqueous solution

Patent · Mon Jan 01 00:00:00 EST 1990

OSTI ID:867309

Jackson, Paul J ^[1]; Delhaize, Emmanuel ^[1]; Robinson, Nigel J ^[2]; Unkefer, Clifford J ^[1]; Furlong, Clement ^[3]

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1. Los Alamos, NM
2. Durham, GB2
3. Seattle, WA

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.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4909944
• OSTI ID: 867309
• Country of Publication: United States
• Language: English

Related Subjects

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
units
easily
regenerated
amount
organic
acid
remove
results
column
concentrated
monomer repeat
inert material
heavy metal
solution containing
aqueous solution
particulate form
heavy metals
removing heavy
organic acid
repeat unit
remove heavy
polypeptides sequester
particular metals
concentrated form
containing heavy
easily regenerated
/210/