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Download fileEmission Characteristics for Polycyclic Aromatic Hydrocarbons from Solid Fuels Burned in Domestic Stoves in Rural China
journal contribution
posted on 2013-12-17, 00:00 authored by Guofeng Shen, Shu Tao, Yuanchen Chen, Yanyan Zhang, Siye Wei, Miao Xue, Bin Wang, Rong Wang, Yan Lu, Wei Li, Huizhong Shen, Ye Huang, Han ChenEmission
characterization of polycyclic aromatic hydrocarbons (PAHs)
from residential combustion of crop residues, woody material, coal,
and biomass pellets in domestic stoves in rural China are compared
in term of emission factors (EFs), influencing factors, composition
profiles, isomer ratios and phase distributions. The EFs of PAHs vary
by 2 orders of magnitude among fuel types suggesting that a detailed
fuel categorization is useful in the development of an emission inventory
and potential in emission abatement of PAHs by replacing dirty fuels
with relatively cleaner ones. The influence of fuel moisture in biomass
burning is nonlinear. Biofuels with very low moisture display relatively
high emissions as do fuels with very high moisture. Bituminous coals
and brushwood yield relatively large fractions of high molecular PAHs.
The emission factor of benzo(a)pyrene equivalent quantity for raw
bituminous coal is as high as 52 mg/kg, which is 1–2 orders
of magnitude higher than the other fuels. For source diagnosis, high
molecular weight isomers are more informative than low molecular weight
ones and multiple ratios could be used together whenever possible.
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Keywords
PAHEmission CharacteristicsBituminous coalsPolycyclic Aromatic Hydrocarbonsemission abatementfuel typesSolid Fuelsweight onesfuel categorizationwoody material2 ordersRural ChinaEmission characterizationcrop residuesDomestic Stovesfuel moistureEFmoisture displayemission inventoryemission factorweight isomerssource diagnosisbiomass pelletscomposition profilesisomer ratiosemission factorsphase distributions