Abstract
The physical and chemical properties of biomass
combustion-originated particles produced under controlled
conditions (efficient, intermediate, and smouldering
combustion) were studied. Transmission electron
microscopy with energy dispersive X-ray spectroscopy was
used to study the morphology and chemical composition of
the size-classified samples collected from the flue gas.
In addition, online-measured particle number size
distributions, chemical analyses of the PM samples, and
thermodynamic equilibrium calculations were used to
interpret the results. The particles were composed of
inorganic species and carbonaceous matter. Zinc oxide
particles with an average diameter of 100nm). TEM observations of the
size-classified samples revealed that condensed organic
matter influenced the ash particle size and appearance.
The soot morphology was also found to change, even after
short periods of time, due to the presence of OM; changes
in the primary particle diameter and the appearance of
the agglomerates were observed. As external mixtures, the
soot and ash particles were separated into two particle
size modes, but both could be found as internally mixed
from the accumulation mode. This result extends the
current knowledge of particle formation in wood
combustion, showing that the particle formation processes
of ash and soot particles are largely separate
| Original language | English |
|---|---|
| Pages (from-to) | 65-76 |
| Journal | Atmospheric Environment |
| Volume | 87 |
| Issue number | April |
| DOIs | |
| Publication status | Published - 2014 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- Biomass combustion
- emissions characterisation
- gas-to-particle conversion
- transmission electron microscopy
- ultrafine particles