Stabilization of heavy metals in ash

Details Stabilization of heavy metals in ash Stabilization of heavy metals in ash

1996-02-14

1997-07-22

Suchfield, George A.

Hazardous or toxic waste destruction or containment

Containment

Solidification, vitrification, or cementation

588901, A62D 300, B09B 300

Patent

active

056498950

ABSTRACT:
This invention relates to a process for stabilizing heavy metals in ash. The steps of the process include: (a) preparing an aqueous slurry of ash and water; (b) decreasing the pH of the aqueous slurry to less than about 5.0 in the presence of an iron salt; (c) treating the aqueous slurry with (1) an organo sulfur containing compound, (2) an alkaline extract of peat moss, and (3) an alkaline earth metal containing compound. Heavy metals in ash treated by this process will not leach into the environment.

REFERENCES:
patent: 4943377 (1990-07-01), Legare, III
patent: 5259975 (1993-11-01), Mohn
patent: 5264135 (1993-11-01), Mohn
patent: 5403496 (1995-04-01), Kramer et al.
patent: 5536899 (1996-07-01), Forrester

Affiliated with

Also associated with

Rating

Stabilization of heavy metals in ash does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Stabilization of heavy metals in ash, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stabilization of heavy metals in ash will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1557053