Effective density and morphology of particles emitted from small-scale combustion of various wood fuels

J. Leskinen (Corresponding Author), Mika Ihalainen, T. Torvela, M. Kortelainen, H. Lamberg, P. Tiitta, G. Jakobi, J. Grigonyte, J. Joutsensaari, O. Sippula, J. Tissari, A. Virtanen, R. Zimmermann, Jorma Jokiniemi

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Abstract

The effective density of fine particles emitted from small-scale wood combustion of various fuels were determined with a system consisting of an aerosol particle mass analyzer and a scanning mobility particle sizer (APM-SMPS). A novel sampling chamber was combined to the system to enable measurements of highly fluctuating combustion processes. In addition, mass-mobility exponents (relates mass and mobility size) were determined from the density data to describe the shape of the particles. Particle size, type of fuel, combustion phase, and combustion conditions were found to have an effect on the effective density and the particle shape. For example, steady combustion phase produced agglomerates with effective density of roughly 1 g cm-3 for small particles, decreasing to 0.25 g cm-3 for 400 nm particles. The effective density was higher for particles emitted from glowing embers phase (ca. 1-2 g cm-3), and a clear size dependency was not observed as the particles were nearly spherical in shape. This study shows that a single value cannot be used for the effective density of particles emitted from wood combustion.
Original languageEnglish
Pages (from-to)13298-13306
JournalEnvironmental Science & Technology
Volume48
Issue number22
DOIs
Publication statusPublished - 2014
MoE publication typeA1 Journal article-refereed

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Wood fuels
combustion
Wood
Aerosols
fuel wood
particle
Particle size
Sampling
Scanning
particle size
aerosol

Cite this

Leskinen, J., Ihalainen, M., Torvela, T., Kortelainen, M., Lamberg, H., Tiitta, P., ... Jokiniemi, J. (2014). Effective density and morphology of particles emitted from small-scale combustion of various wood fuels. Environmental Science & Technology, 48(22), 13298-13306. https://doi.org/10.1021/es502214a
Leskinen, J. ; Ihalainen, Mika ; Torvela, T. ; Kortelainen, M. ; Lamberg, H. ; Tiitta, P. ; Jakobi, G. ; Grigonyte, J. ; Joutsensaari, J. ; Sippula, O. ; Tissari, J. ; Virtanen, A. ; Zimmermann, R. ; Jokiniemi, Jorma. / Effective density and morphology of particles emitted from small-scale combustion of various wood fuels. In: Environmental Science & Technology. 2014 ; Vol. 48, No. 22. pp. 13298-13306.
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abstract = "The effective density of fine particles emitted from small-scale wood combustion of various fuels were determined with a system consisting of an aerosol particle mass analyzer and a scanning mobility particle sizer (APM-SMPS). A novel sampling chamber was combined to the system to enable measurements of highly fluctuating combustion processes. In addition, mass-mobility exponents (relates mass and mobility size) were determined from the density data to describe the shape of the particles. Particle size, type of fuel, combustion phase, and combustion conditions were found to have an effect on the effective density and the particle shape. For example, steady combustion phase produced agglomerates with effective density of roughly 1 g cm-3 for small particles, decreasing to 0.25 g cm-3 for 400 nm particles. The effective density was higher for particles emitted from glowing embers phase (ca. 1-2 g cm-3), and a clear size dependency was not observed as the particles were nearly spherical in shape. This study shows that a single value cannot be used for the effective density of particles emitted from wood combustion.",
author = "J. Leskinen and Mika Ihalainen and T. Torvela and M. Kortelainen and H. Lamberg and P. Tiitta and G. Jakobi and J. Grigonyte and J. Joutsensaari and O. Sippula and J. Tissari and A. Virtanen and R. Zimmermann and Jorma Jokiniemi",
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Leskinen, J, Ihalainen, M, Torvela, T, Kortelainen, M, Lamberg, H, Tiitta, P, Jakobi, G, Grigonyte, J, Joutsensaari, J, Sippula, O, Tissari, J, Virtanen, A, Zimmermann, R & Jokiniemi, J 2014, 'Effective density and morphology of particles emitted from small-scale combustion of various wood fuels', Environmental Science & Technology, vol. 48, no. 22, pp. 13298-13306. https://doi.org/10.1021/es502214a

Effective density and morphology of particles emitted from small-scale combustion of various wood fuels. / Leskinen, J. (Corresponding Author); Ihalainen, Mika; Torvela, T.; Kortelainen, M.; Lamberg, H.; Tiitta, P.; Jakobi, G.; Grigonyte, J.; Joutsensaari, J.; Sippula, O.; Tissari, J.; Virtanen, A.; Zimmermann, R.; Jokiniemi, Jorma.

In: Environmental Science & Technology, Vol. 48, No. 22, 2014, p. 13298-13306.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - Effective density and morphology of particles emitted from small-scale combustion of various wood fuels

AU - Leskinen, J.

AU - Ihalainen, Mika

AU - Torvela, T.

AU - Kortelainen, M.

AU - Lamberg, H.

AU - Tiitta, P.

AU - Jakobi, G.

AU - Grigonyte, J.

AU - Joutsensaari, J.

AU - Sippula, O.

AU - Tissari, J.

AU - Virtanen, A.

AU - Zimmermann, R.

AU - Jokiniemi, Jorma

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N2 - The effective density of fine particles emitted from small-scale wood combustion of various fuels were determined with a system consisting of an aerosol particle mass analyzer and a scanning mobility particle sizer (APM-SMPS). A novel sampling chamber was combined to the system to enable measurements of highly fluctuating combustion processes. In addition, mass-mobility exponents (relates mass and mobility size) were determined from the density data to describe the shape of the particles. Particle size, type of fuel, combustion phase, and combustion conditions were found to have an effect on the effective density and the particle shape. For example, steady combustion phase produced agglomerates with effective density of roughly 1 g cm-3 for small particles, decreasing to 0.25 g cm-3 for 400 nm particles. The effective density was higher for particles emitted from glowing embers phase (ca. 1-2 g cm-3), and a clear size dependency was not observed as the particles were nearly spherical in shape. This study shows that a single value cannot be used for the effective density of particles emitted from wood combustion.

AB - The effective density of fine particles emitted from small-scale wood combustion of various fuels were determined with a system consisting of an aerosol particle mass analyzer and a scanning mobility particle sizer (APM-SMPS). A novel sampling chamber was combined to the system to enable measurements of highly fluctuating combustion processes. In addition, mass-mobility exponents (relates mass and mobility size) were determined from the density data to describe the shape of the particles. Particle size, type of fuel, combustion phase, and combustion conditions were found to have an effect on the effective density and the particle shape. For example, steady combustion phase produced agglomerates with effective density of roughly 1 g cm-3 for small particles, decreasing to 0.25 g cm-3 for 400 nm particles. The effective density was higher for particles emitted from glowing embers phase (ca. 1-2 g cm-3), and a clear size dependency was not observed as the particles were nearly spherical in shape. This study shows that a single value cannot be used for the effective density of particles emitted from wood combustion.

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