Use of a massive volume air sampler to collect fly ash for biological characterization
The report describes the modification of a massive volume air sampler (MVAS) to collect fly ash emissions from the stack mouth of an experimental fluidized bed combustor. High volume filter fly ash samples and laboratory size cascade impactor samples were simultaneously obtained to verify the operation of the MVAS. Due to the large quantity of size-classified fly ash it was possible to characterize its physicochemical and biological properties as a function of particle size. Results show that the bulk density of the FBC fly ash was independent of the particle size. Although the MVAS collects fly ash fractions with considerable overlap, the trend toward higher mutagenic activity in the smaller size fraction noted in previous studies of fly ash was present. As the MVAS does have a large capacity, relatively large quantities of ash can be collected within reasonable sampling times. With appropriate dilution even hot gas streams can be sampled at near ambient temperatures.
- Research Organization:
- Lovelace Biomedical and Environmental Research Inst., Albuquerque, NM
- DOE Contract Number:
- AC04-76EV01013
- OSTI ID:
- 6412514
- Journal Information:
- J. Air Pollut. Control Assoc.; (United States), Journal Name: J. Air Pollut. Control Assoc.; (United States) Vol. 34:6; ISSN JPCAA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Evaluation of fly ash collection methods for short-term bioassay studies of fluidized-bed coal combustion
Sample collection and preparation methods affecting mutagenicity and cytotoxicity of coal fly ash
Related Subjects
010900 -- Coal
Lignite
& Peat-- Environmental Aspects
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOL WASTES
AIR SAMPLERS
ASHES
COMBUSTORS
DESIGN
EQUIPMENT
FLUIDIZED-BED COMBUSTORS
FLY ASH
MUTAGEN SCREENING
OPERATION
PARTICLE SIZE
PHYSICAL PROPERTIES
RESIDUES
SAMPLERS
SAMPLING
SCREENING
SIZE
WASTES