Particle emissions from district heating units operating on three commonly used biofuels

Wierzbicka, Aneta; Lillieblad, Lena; Pagels, Joakim; Strand, Michael; Gudmundsson, Anders; Gharibi, Arash; Swietlicki, Erik; Sanati, Mehri; Bohgard, Mats

doi:10.1016/j.atmosenv.2004.09.027

Cited by 91 publications

(60 citation statements)

References 16 publications

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“…Size distribution data from the two boilers have been described in more detail previously (Pagels et al 2003;Wierzbicka et al 2005). The total number concentration of emitted particles was 5.1 · 10 7 and 6.3 · 10 7 particles/cm 3 for 50 and 100% load, respectively, in boiler 1 and 2.9 · 10 7 particles/cm 3 for a 30% load in boiler 2.…”

Section: Time and Size-resolved Analysis Of Concentrationsmentioning

confidence: 99%

“…An Electrical Low-Pressure Impactor (ELPI) (Marjamäki et al 2000) was used in the second boiler. These measurements are described in more detail by Pagels et al (2003), Lillieblad et al (2004) and Wierzbicka et al (2005). In this article, some additional analysis is presented to identify the time and size variation of ash components like potassium salts and EC/OC.…”

Section: Additional Measurementsmentioning

confidence: 99%

“…However, neither PIXE nor IC can detect carbon. Wierzbicka et al (2005) analyzed PM 1 samples for organic (OC) and elemental carbon (EC) in boiler 2 during the same measurement campaign. They found that OC and EC contributed, on average, to 8 and 34% of PM 1, respectively.…”

Section: Size-resolved Chemical Compositionmentioning

confidence: 99%

“…The boilers and the sampling systems are described in more detail by Pagels et al (2003) and Wierzbicka et al (2005). All reported concentrations are normalized to 13% CO 2 , at 0…”

Section: Combustion System and Particle Samplingmentioning

confidence: 99%

“…The Zdanovski-Stokes-Robinson (ZSR) method was used to predict hygroscopic growth factors from chemical composition data partly reported previously (Pagels et al 2003;Wierzbicka et al 2005). A method is described that can be used to estimate the fractal dimension of agglomerated hygroscopic combustion aerosol and to convert the measured mobility hygroscopic growth factor to the more useful property volume growth factor.…”

Section: Introductionmentioning

confidence: 99%

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Hygroscopic Behavior of Aerosol Particles Emitted from Biomass Fired Grate Boilers

Rissler

Pagels

Swietlicki

et al. 2005

Aerosol Science and Technology

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This study focuses on the hygroscopic properties of submicrometer aerosol particles emitted from two small-scale district heating combustion plants (1 and 1.5 MW) burning two types of biomass fuels (moist forest residue and pellets). The hygroscopic particle diameter growth factor (Gf ) was measured when taken from a dehydrated to a humidified state for particle diameters between 30-350 nm (dry size) using a Hygroscopic Tandem Differential Mobility Analyzer (H-TDMA). Particles of a certain dry size all showed similar diameter growth and the Gf at RH = 90% for 110/100 nm particles was 1.68 in the 1 MW boiler, and 1.5 in the 1.5 MW boiler. These growth factors are considerably higher in comparison to other combustion aerosol particles such as diesel exhaust, and are the result of the efficient combustion and the high concentration of alkali species in the fuel. The observed water uptake could be explained using the Zdanovski-Stokes-Robinson (ZSR) mixing rule and a chemical composition of potassium salts only, taken from ion chromatography analysis of filter and impactor samples (KCl, K 2 SO 4 , and K 2 CO 3 ). Agglomerated particles collapsed and became more spherical when initially exposed to a moderately high relative humidity. When diluted with hot particle-free air, the fractallike structures remained intact until humidified in the H-TDMA. A method to estimate the fractal dimension of the agglomerated combustion aerosol and to convert the measured mobility diameter hygroscopic growth to the more useful property volume diameter growth is presented. The fractal dimension was estimated to be ∼2.5.

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Section: Time and Size-resolved Analysis Of Concentrationsmentioning

confidence: 99%

Section: Additional Measurementsmentioning

confidence: 99%

Section: Size-resolved Chemical Compositionmentioning

confidence: 99%

“…The boilers and the sampling systems are described in more detail by Pagels et al (2003) and Wierzbicka et al (2005). All reported concentrations are normalized to 13% CO 2 , at 0…”

Section: Combustion System and Particle Samplingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Hygroscopic Behavior of Aerosol Particles Emitted from Biomass Fired Grate Boilers

Rissler

Pagels

Swietlicki

et al. 2005

Aerosol Science and Technology

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Possible indicators for biomass burning in a small Swedish city as studied by energy dispersive x‐ray fluorescence (EDXRF) spectrometry

et al. 2005

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Biomass is increasingly used in energy plants of different size and sophistication in Sweden. Biomass is also available in Sweden owing to its large forest-covered areas. Incineration of biomass in an environmentally friendly manner is one of the key issues in Swedish policy for sustainable development. Hence there is ongoing research on the effects of biomass burning on the air quality in Swedish cities. The relative contributions of anthropogenic sources to pollution in the urban environment are usually difficult to evaluate owing to the complexity of the ambient aerosol. In order to investigate the contribution of biomass incineration to air quality, energy-dispersive x-ray fluorescence (EDXRF) analysis was performed on aerosol particles sampled in the centre of the small city of Växjö. PM 2.5 and PM 2.5 -10 fractions were sampled with the special aim of determining the contribution of biomass burning to particulate air pollution. In order to identify typical indicators for biomass burning, principle component analysis was performed on data on elemental contents and black carbon. Analysis suggests that the K/Zn ratio will be useful as an indicator for biomass incineration.

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The Effect of Additives on Particulate Matter Emissions from Biomass Combustion

Akyürek

2024

Aerosol Optical Depth and Precipitation

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Particle emissions from district heating units operating on three commonly used biofuels

Cited by 91 publications

References 16 publications

Hygroscopic Behavior of Aerosol Particles Emitted from Biomass Fired Grate Boilers

Hygroscopic Behavior of Aerosol Particles Emitted from Biomass Fired Grate Boilers

Possible indicators for biomass burning in a small Swedish city as studied by energy dispersive x‐ray fluorescence (EDXRF) spectrometry

The Effect of Additives on Particulate Matter Emissions from Biomass Combustion

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