Physicochemical properties and oxidative potential of fine particles produced from coal combustion

Joo, Hung-Soo; Batmunkh, Tsatsa; Borlaza, Lucille Joanna S.; Park, Minhan; Lee, Kwang Yul; Lee, Ji Yi; Chang, Yu Woon; Park, Kihong

doi:10.1080/02786826.2018.1501152

Cited by 6 publications

(5 citation statements)

References 76 publications

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“…Pulverized coal combustion is typically used for the generation of electricity, accounting for around 40% of the world’s electricity [ 49 ]. In developing countries, coal is also used for household heating and cooking, which has adverse health effects on indoor residents [ 34 , 50 , 51 , 52 ].…”

Section: Resultsmentioning

confidence: 99%

“…Figure 2 shows various systems for generating combustion aerosols (diesel engine, biomass burning, coal burning, and meat burning). The particle generation systems were described in detail in our previous papers [ 33 , 34 , 35 ]. Briefly, diesel engine exhaust particles were produced from a diesel generator (192FC, Hi-earns, Changzhou, China), as shown in Figure 2 a.…”

Section: Methodsmentioning

confidence: 99%

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Application of Single-Particle Mass Spectrometer to Obtain Chemical Signatures of Various Combustion Aerosols

Cho

Kim

Kwak

et al. 2021

IJERPH

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A single-particle mass spectrometer (SPMS) with laser ionization was constructed to determine the chemical composition of single particles in real time. The technique was evaluated using various polystyrene latex particles with different sizes (125 nm, 300 nm, 700 nm, and 1000 nm); NaCl, KCl, MgCO3, CaCO3, and Al2O3 particles with different chemical compositions; an internal mixture of NaCl and KCl; and an internal mixture of NaCl, KCl, and MgCl2 with different mixing states. The results show that the SPMS can be useful for the determination of chemical characteristics and mixing states of single particles in real time. The SPMS was then applied to obtain the chemical signatures of various combustion aerosols (diesel engine exhaust, biomass burning (rice straw), coal burning, and cooking (pork)) based on their single-particle mass spectra. Elemental carbon (EC)-rich and EC-organic carbon (OC) particles were the predominant particle types identified in diesel engine exhaust, while K-rich and EC-OC-K particles were observed among rice straw burning emissions. Only one particle type (ash-rich particles) was detected among coal burning emissions. EC-rich and EC-OC particles were observed among pork burning particles. The single-particle mass spectra of the EC or OC types of particles differed among various combustion sources. The observed chemical signatures could be useful for rapidly identifying sources of atmospheric fine particles. In addition, the detected chemical signatures of the fine particles may be used to estimate their toxicity and to better understand their effects on human health.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Application of Single-Particle Mass Spectrometer to Obtain Chemical Signatures of Various Combustion Aerosols

Cho

Kim

Kwak

et al. 2021

IJERPH

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“…Factor 2 exhibits a large fraction of picene, Zn, Mn, Cd, As, and Pb, which is considered to be coal burning (Huang et al, 2014;Huang et al, 2018). Joo et al (2018) measured the DTT activity of PM2.5 emitted from coal combustion at different temperatures, with the highest values of 26.2 ± 20.5 pmol min -1 μg -1 and https://doi.org/10.5194/egusphere-2024-680 Preprint. Discussion started: 21 March 2024 c Author(s) 2024.…”

Section: Sources Of Dtt Activitymentioning

confidence: 99%

Measurement report: Oxidation potential of water-soluble aerosol components in the southern and northern of Beijing

Yuan,

Huang,

Luo

et al. 2024

Preprint

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Abstract. Water-soluble components have significant contribution to the oxidative potential (OP) of atmospheric fine particles, while our understanding of their relationship is still limited. In this study, the water-soluble OP levels in wintertime PM2.5 in the south and north of Beijing, representing the difference in sources, were measured with dithiothreitol (DTT) assay. The volume normalized DTT (DTTv) in the north (3.5 ± 1.2 nmol min-1 m-3) was comparable to that in the south (3.9 ± 0.9 nmol min-1 m-3), while the mass normalized DTT (DTTm) in the north (65.3 ± 27.6 pmol min-1 μg-3) was almost twice that in the south (36.1 ± 14.5 pmol min-1 μg-3). In both the south and north of Beijing, DTTv was better correlated with soluble elements instead of total elements. In the north, soluble elements (mainly Mn, Co, Ni, Zn, As, Cd and Pb) and water-soluble organic compounds, especially light-absorbing compounds (also known as brown carbon), had positive correlations with DTTv. However, in the south, the DTTv was mainly related to soluble As, Fe and Pb. The sources of DTTv were further resolved using the positive matrix factorization (PMF) model. Traffic-related emissions (39.1 %) and biomass burning (25.2 %) were the main sources of DTTv in the south, and traffic-related emissions (> 50 %) contributed the most of DTTv in the north. Our results indicate that vehicle emission was the important contributor to OP in Beijing ambient PM2.5 and suggest that more study is needed to understand the intrinsic relationship between OP and light absorbing organic compounds.

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“…We note that the fuel particle sizes employed in this study are consistent with pulverized coal and biomass particle sizes in power generation applications (usually on the order of 10 1 − 10 2 μm) 53,54 and laboratory drop-tube furnace studies. 31,55 However, domestic burning applications usually do not utilize pulverized fuels. The relatively large sizes of biomass or coal (e.g., briquettes or chunks) in domestic burning lead to complex combustion conditions dictated by heterogeneity in temperature and air-to-fuel ratio, which exhibit spatial and temporal variability.…”

Section: ■ Introductionmentioning

confidence: 99%

“…The combustion of both coal and biomass produces high concentrations of aerosol emissions, not only in low-efficiency domestic burning, − but also in industrial processes. , Due to their significant public health impacts, , emissions from domestic cookstoves have been extensively studied. Aerosolspecifically PM with sizes smaller than 2.5 μm (PM 2.5 )emission factors from cookstoves reported in the literature range over 3 orders of magnitude from 10 –1 g/kg-fuel to 10 2 g/kg-fuel. − With biomass and coal having heating values on the order of 10 1 MJ/kg, , the range of emission factors per unit energy translates to 10 –2 –10 1 g/MJ. This wide variation is attributed to several factors, including differences in fuels, cookstove type, and operation conditions. − Aerosol emissions from solid fuel combustion in power generation applications are typically lower than domestic burning, which is expected, given complete combustion in those applications.…”

Section: Introductionmentioning

confidence: 99%

Effect of Torrefaction on Aerosol Emissions at Combustion Temperatures Relevant for Domestic Burning and Power Generation

Perrie

Glenn

Reed

et al. 2022

ACS Earth Space Chem.

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Torrefied biomass is a promising carbon-neutral alternative to coal. However, the effect of torrefaction on aerosol production in biomass combustion is understudied. Here, we compared the emissions and physicochemical properties of aerosols produced by the combustion of raw pine, torrefied pine, and bituminous coal. At the highest combustion temperature of 1000 °C, aerosol emission from coal was 5.2 ± 0.4 mg/MJ, while emissions from raw and torrefied pine were negligible (<10–2 mg/MJ). The coal–combustion aerosol was dominated by inorganics (85%), with a small organic fraction (15%), a composition typical of condensable particulate matter observed in power generation applications. At the lowest combustion temperature of 400 °C, aerosol emissions from raw pine (25.3 ± 4 mg/MJ) and torrefied pine (5.6 ± 0.8 mg/MJ) were dominated by organics. The organic molecules probed using electrospray ionization mass spectrometry were dominated by CHO and CHNO groups for both raw and torrefied pine. Torrefied pine emissions featured less aromatics (17% vs 22%), which can be attributed to the reduction in volatile matter content associated with torrefaction. Overall, our findings support the adoption of torrefied pine for domestic burning and power generation because of the added benefit of reducing aerosol emissions in addition to being carbon-neutral.

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Physicochemical properties and oxidative potential of fine particles produced from coal combustion

Cited by 6 publications

References 76 publications

Application of Single-Particle Mass Spectrometer to Obtain Chemical Signatures of Various Combustion Aerosols

Application of Single-Particle Mass Spectrometer to Obtain Chemical Signatures of Various Combustion Aerosols

Measurement report: Oxidation potential of water-soluble aerosol components in the southern and northern of Beijing

Effect of Torrefaction on Aerosol Emissions at Combustion Temperatures Relevant for Domestic Burning and Power Generation

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