Method for reducing the leaching of oxyanion forming...

Details Method for reducing the leaching of oxyanion forming... Method for reducing the leaching of oxyanion forming...

2005-08-02

2005-08-02

Kreck, John (Department: 3673)

Hazardous or toxic waste destruction or containment

Processes for making harmful chemical substances harmless,...

By reacting with chemical agents

C588S256000, C588S412000

Reexamination Certificate

active

06924409

ABSTRACT:
In a method for reducing the leaching of oxyanion forming elements, in particular chromium, from materials containing environmentally noxious constituents, especially from incineration residues, especially flue gas cleaning products from waste incineration, in particular fly ash, the said materials are admixed with an aqueous medium such as water in a closed container in a liquid-solid ratio sufficient to cause reducing conditions capable of stabilizing oxyanion forming elements, in particular chromium, due to oxidation of metallic Al, Zn, Fe, and other free metals present in the said materials.

REFERENCES:
patent: 3575853 (1971-04-01), Gaughan et al.
patent: 3933635 (1976-01-01), Marchant
patent: 5431825 (1995-07-01), Diel

Affiliated with

Also associated with

Rating

Method for reducing the leaching of oxyanion forming... 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 reducing the leaching of oxyanion forming..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for reducing the leaching of oxyanion forming... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3440566