Method for immobilizing material contaminated with heavy metal i

Details Method for immobilizing material contaminated with heavy metal i Method for immobilizing material contaminated with heavy metal i

1994-08-22

1995-07-04

McCarthy, Neil

Liquid purification or separation

Processes

Chemical treatment

210912, C02F 162, C02F 1114

Patent

active

054297516

ABSTRACT:
A method for immobilizing material contaminated with heavy metal ions, a fixant for immobilizing heavy metal ions and a matrix.
A method is disclosed for immobilizing material contaminated with heavy metal ions, said metal ions in a liquid environment being allowed to react with a metal-complexing agent with the formation of a metal complex, the metal-complex formed being mixed, in the presence of water, with an inorganic, hydraulic binder comprising blast furnace slag cement, fly ash cement or a combination thereof to form a matrix having reductive properties in the form of a hard, rocklike material, which method is characterized in that said metal complex is formed in the presence of a metal-complex bond activator. Said metal-complex bond activator is preferably a water-soluble salt of a transition metal element, expediently ferric chloride or manganese sulphate. The invention also relates to a fixant for immobilizing heavy metal ions comprised in waste material, and to a matrix to be formed from a material contaminated with heavy metal ions.

REFERENCES:
patent: 3841102 (1974-10-01), Cinner et al.
patent: 4659511 (1987-04-01), Fukasawa et al.
patent: 4844815 (1989-07-01), Ader et al.
patent: 4948516 (1990-08-01), Fisher et al.
patent: 5238583 (1993-08-01), Fortson
patent: 5259975 (1993-11-01), Mohn
patent: 5264135 (1993-11-01), Mohn
patent: 5372729 (1994-12-01), Hooykaas
patent: 5376283 (1994-12-01), Hooykaas

Affiliated with

Also associated with

Rating

Method for immobilizing material contaminated with heavy metal i does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for immobilizing material contaminated with heavy metal i, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for immobilizing material contaminated with heavy metal i will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-758267