Fixation of heavy metals in municipal solid waste incinerator as

Hazardous or toxic waste destruction or containment – Containment – Solidification – vitrification – or cementation

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

588231, 588233, 588251, 588249, 106710, 106DIG1, 10628718, C04B 1808, C04B 1806, C04B 1400, C04B 1830

Patent

active

052201120

ABSTRACT:
Fly ash generated from incineration of municipal solid waste (MSW) when placed in landfills can under mild acid conditions leach lead and cadmium. A process for stabilizing lead in this fly ash is presented which involves calcining a mixture of the fly ash and certain calcium-containing compounds in the presence of an oxygen containing gas stream at a temperature greater than about 475.degree. C. and substantially less than about 800.degree. C. for times from about 30 minutes up to about 5 hours. Such treated MSW fly ash will give leachates containing lead concentrations less than the EPA regulatory limit.

REFERENCES:
patent: 3837872 (1974-09-01), Conner
patent: 4209335 (1980-06-01), Katayama et al.
patent: 4299611 (1981-11-01), Penberthy
patent: 4629509 (1986-12-01), O'Hara et al.
patent: 4737356 (1988-04-01), O'Hara et al.
patent: 4840671 (1989-06-01), Lynn et al.
patent: 4877453 (1989-10-01), Loggers et al.
patent: 4917733 (1990-04-01), Hansen
patent: 4941772 (1990-07-01), Roesky et al.
patent: 4971627 (1990-11-01), Koslowski et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Fixation of heavy metals in municipal solid waste incinerator as does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFUS-PAI-O-1044854

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.