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Emission Characteristics of Particulate Matter and Volatile Organic Compounds in Cow Dung Combustion
Park, Duckshin,Barabad, Mona L.,Lee, Gwangjae,Kwon, Soon-Bark,Cho, Youngmin,Lee, Duckhee,Cho, KiChul,Lee, Kiyoung American Chemical Society 2013 Environmental science & technology Vol.47 No.22
<P>Biomass fuel is used for cooking and heating, especially in developing countries. Combustion of biomass fuel can generate high levels of indoor air pollutants, including particulate matter (PM) and volatile organic compounds (VOCs). This study characterized PM and VOC emissions from cow dung combustion in a controlled experiment. Dung from grass-fed cows was dried and combusted using a dual-cone calorimeter. Heat fluxes of 10, 25, and 50 kW/m<SUP>2</SUP> were applied. The concentrations of PM and VOCs were determined using a dust spectrometer and gas chromatography/mass spectrometry, respectively. PM and VOC emission factors were much higher for the lower heat flux, implying a fire ignition stage. When the heat flux was 50 kW/m<SUP>2</SUP>, the CO<SUB>2</SUB> emission factor was highest and the PM and VOC emission factors were lowest. Particle concentrations were highest in the 0.23–0.3 μm size range at heat fluxes of 25 and 50 kW/m<SUP>2</SUP>. Various toxic VOCs, including acetone, methyl ethyl ketone, benzene, and toluene, were detected at high concentrations. Although PM and VOC emission factors at 50 kW/m<SUP>2</SUP> were lower, they were high enough to cause extremely high indoor air pollution. The characteristics of PM and VOC emissions from cow dung combustion indicated potential health effects of indoor air pollution in developing countries.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/esthag/2013/esthag.2013.47.issue-22/es402822e/production/images/medium/es-2013-02822e_0003.gif'></P>
( Duck Shin Park ),( Keun Yul Yang ),( Mona L Barabad ),( Young Min Cho ),( Woo Tae Jeong ),( Soon Bark Kwon ),( Ki Young Lee ) 한국폐기물자원순환학회(구 한국폐기물학회) 2013 한국폐기물자원순환학회 추계학술발표논문집 Vol.2013 No.-
This study characterized PM and VOC emissions from cow dung combustion in a controlled experiment. Dung from grass-fed cows was dried and combusted using a dual cone calorimeter. Heat fluxes of 10, 25, and 50 kW/m2 were applied. The concentrations of PM and VOCs were determined using a dust spectrometer and gas chromatography/mass spectrometry, respectively. PM and VOC emission factors were much higher for the lower heat flux, implying a fire ignition stage. When the heat flux was 50 kW/m2, the CO2 emission factor was highest and the PM and VOC emission factors were lowest. Particle concentrations were highest in the 0.23-0.3-μm size range at heat fluxes of 25 kW/m2 and 50 kW/m2. Various toxic VOCs including acetone, methyl ethyl ketone, benzene, and toluene were detected at high concentrations. Although PM and VOC emission factors at 50 kW/m2 were lower, they were high enough to cause extremely high indoor air pollution. The characteristics of PM and VOC emissions from cow dung combustion indicated potential health effects of indoor air pollution in developing countries.