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Time-resolved chemical composition of small-scale batch combustion emissions from various wood species

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Date
2018
Author(s)
Kortelainen, M
Jokiniemi, J
Tiitta, P
Tissari, J
Lamberg, H
Leskinen, J
Grigonyte-Lopez Rodriguez, J
Koponen, H
Antikainen, S
Nuutinen, I
Zimmermann, R
Sippula, O
Unique identifier
10.1016/j.fuel.2018.06.056
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Citation
Kortelainen, M. Jokiniemi, J. Tiitta, P. Tissari, J. Lamberg, H. Leskinen, J. Grigonyte-Lopez Rodriguez, J. Koponen, H. Antikainen, S. Nuutinen, I. Zimmermann, R. Sippula, O. (2018). Time-resolved chemical composition of small-scale batch combustion emissions from various wood species.  FUEL, 233, 224-236. 10.1016/j.fuel.2018.06.056.
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© Elsevier Ltd
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CC BY-NC-ND https://creativecommons.org/licenses/by-nc-nd/4.0/
Abstract

Small-scale batch combustion of wood is a major source of fine particles, black carbon emission and polycyclic aromatic hydrocarbons in Finland. The mass and chemical compositions of batch combustion emissions are known to be highly time-dependent. In this study, the gaseous and particulate batch combustion emissions of three European wood species (beech, birch and spruce) were quantified in detail with an extensive set of online analysers, including a soot particle aerosol mass spectrometer (SP-AMS) for real-time detection of particulate chemical composition. Ignition and a new batch addition on top of glowing embers were identified as the primary low temperature events during which both particulate and gaseous organic emissions peaked. The flaming combustion created high temperature conditions and produced increased emissions of refractory black carbon (rBC) and PAHs. The residual char combustion phase was characterized by low particulate mass emission consisting mainly of alkali salts and elevated concentrations of gaseous organic emissions and CO. Overall, hardwood species (beech and birch) had the highest PM1 emissions, and the difference between the lowest average emission (spruce) and the highest (birch) was more than 3-fold. The increasing combustion chamber temperature during sequential combustion of wood batches was found to decrease the carbonaceous fraction of the PM as well as OC/EC ratio, as the result of more efficient secondary combustion.

Subjects
modern masonry heater   fine particles   refractory black carbon   organic aerosol   
URI
https://erepo.uef.fi/handle/123456789/6909
Link to the original item
http://dx.doi.org/10.1016/j.fuel.2018.06.056
Publisher
Elsevier BV
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  • Luonnontieteiden ja metsätieteiden tiedekunta [1109]
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