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Controlling formaldehyde emissions with boiler ash.
- Source :
-
Environmental science & technology [Environ Sci Technol] 2005 Jul 01; Vol. 39 (13), pp. 5101-4. - Publication Year :
- 2005
-
Abstract
- Fluidized wood ash reduces formaldehyde in air from about 20 to <1 ppmv. Methanol is removed to a much lower extent. The efficiency of formaldehyde reduction increases with increasing moisture content of the ash. Sorption of formaldehyde to ash can be substantially accounted for by partitioning to the water contained in the ash followed by rate-controlling binding to the ash solids. Adsorption occurs at temperatures of up to 165 degrees C; oxidation predominates thereafter. It is proposed that formaldehyde could be stripped from an air stream in a fluidized bed containing ash, which could then be returned to a boiler to incinerate the formaldehyde.
Details
- Language :
- English
- ISSN :
- 0013-936X
- Volume :
- 39
- Issue :
- 13
- Database :
- MEDLINE
- Journal :
- Environmental science & technology
- Publication Type :
- Academic Journal
- Accession number :
- 16053116
- Full Text :
- https://doi.org/10.1021/es0505402