气候变化领域集成服务门户(CCPortal): Ice-nucleating ability of particulate emissions from solid-biomass-fired cookstoves: An experimental study

CCPortal

DOI	10.5194/acp-20-4951-2020
	Ice-nucleating ability of particulate emissions from solid-biomass-fired cookstoves: An experimental study
	Korhonen K.; Bjerring Kristensen T.; Falk J.; Lindgren R.; Andersen C.; Carvalho R.L.; Malmborg V.; Eriksson A.; Boman C.; Pagels J.; Svenningsson B.; Komppula M.; Lehtinen K.E.J.; Virtanen A.
发表日期	2020
ISSN	16807316
起始页码	4951
结束页码	4968
卷号	20 期号:8
英文摘要	This research was part of the Salutary Umeå Study of Aerosols in Biomass Cookstove Emissions (SUSTAINE) laboratory experiment campaign. We studied ice-nucleating abilities of particulate emissions from solid-fuel-burning cookstoves, using a portable ice nuclei counter, Spectrometer Ice Nuclei (SPIN). These emissions were generated from two traditional cookstove types commonly used for household cooking in sub-Saharan Africa and two advanced gasifier stoves under research to promote sustainable development alternatives. The solid fuels studied included biomass from two different African tree species, Swedish softwood and agricultural residue products relevant to the region. Measurements were performed with a modified version of the standard water boiling test on polydisperse samples from flue gas during burning and size-selected accumulation mode soot particles from a 15 m3 aerosol-storage chamber. The studied soot particle sizes in nanometers were 250, 260, 300, 350, 400, 450 and 500. From this chamber, the particles were introduced to water-supersaturated freezing conditions (-32 to-43 °C) in the SPIN. Accumulation mode soot particles generally produced an ice-activated fraction of 10-3 in temperatures 1-1.5 °C higher than that required for homogeneous freezing at fixed RHw D 115 %. In five special experiments, the combustion performance of one cookstove was intentionally modified. Two of these exhibited a significant increase in the icenucleating ability of the particles, resulting in a 10-3 ice activation at temperatures up to 5.9 °C higher than homogeneous freezing and the observed increased ice-nucleating ability. We investigated six different physico-chemical properties of the emission particles but found no clear correlation between them and increasing ice-nucleating ability. We conclude that the freshly emitted combustion aerosols form ice via immersion and condensation freezing at temperatures only moderately above homogeneous freezing conditions. © 2020 Author(s).
关键词	aerosol composition aerosol formation atmospheric chemistry carbon emission cooking appliance experimental study homogeneity particulate matter Prunus mume
语种	英语
来源机构	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132078
推荐引用方式 GB/T 7714	Korhonen K.,Bjerring Kristensen T.,Falk J.,et al. Ice-nucleating ability of particulate emissions from solid-biomass-fired cookstoves: An experimental study[J]. Atmospheric Chemistry and Physics,2020,20(8).
APA	Korhonen K..,Bjerring Kristensen T..,Falk J..,Lindgren R..,Andersen C..,...&Virtanen A..(2020).Ice-nucleating ability of particulate emissions from solid-biomass-fired cookstoves: An experimental study.,20(8).
MLA	Korhonen K.,et al."Ice-nucleating ability of particulate emissions from solid-biomass-fired cookstoves: An experimental study".20.8(2020).