Chemical Fingerprinting of HULIS in Particulate Matters Emitted from Residential Coal and Biomass Combustion

2021 ◽  
Author(s):  
Yaoqiang Huo ◽  
Zihua Guo ◽  
Qing Li ◽  
Di Wu ◽  
Xiang Ding ◽  
...  
Keyword(s):  
Biomass Combustion ◽  
Particulate Matters ◽  
Chemical Fingerprinting ◽  
Residential Coal

scholarly journals Characteristics of Spherical Organic Particles Emitted from Fixed-Bed Residential Coal Combustion

Atmosphere ◽  
2019 ◽  
Vol 10 (8) ◽  
pp. 441
Author(s):  
Tafadzwa Makonese ◽  
Johan Meyer ◽  
Sune von Solms
Keyword(s):  
Coal Combustion ◽  
Regional Climate ◽  
Fixed Bed ◽  
Research Centre ◽  
Biomass Combustion ◽  
Formation Mechanisms ◽  
Carbonaceous Aerosols ◽  
Coal Burning ◽  
Organic Particles ◽  
Residential Coal

Residential coal combustion is one of the most significant sources of carbonaceous aerosols in the Highveld region of South Africa, significantly affecting the local and regional climate. This study investigated single coal-burning particles emitted when using different fire-ignition techniques (top-lit up-draft versus bottom-lit up-draft) and air ventilation rates (defined by the number of air holes above and below the fire grate) in selected informal braziers. Aerosol samples were collected on nucleopore filters at the Sustainable Energy Technology and Research Centre Laboratory, University of Johannesburg. The individual particles (~700) were investigated using a scanning electron microscope equipped with energy-dispersive X-ray spectroscopy (EDX). Two distinct forms of spherical organic particles (SOPs) were identified, one less oxidized than the other. The particles were further classified into electronically dark and bright. The EDX analysis showed that 70% of the dark spherical organic particles had higher (~60%) relative oxygen content than in the bright SOPs. The morphology of spherical organic particles were quantified and classified into four categories: ~50% were bare single particles; ~35% particles were aggregated and formed diffusion accretion chains; 10% had inclusions, and 5% were deformed due to impaction on filter material during sampling. This study concludes that there are two distinct kinds of coal burning spherical organic particles and that dark SOPs are less volatile than bright SOPs. The authors also show that these spherical organic particles are similar in nature and characteristics to tar balls observed in biomass combustion and that they have the potential to absorb sunlight thereby affecting the earth’s radiative budget and climate. This study provides insights into the mixing states, morphology, and possible formation mechanisms of these organic particles from residential coal combustion in informal stoves.

scholarly journals Characteristics of Spherical Organic Particles Emitted from Fixed-Bed Residential Coal Combustion

2019 ◽  
Author(s):  
Tafadzwa Makonese ◽  
Johan Meyer ◽  
Sune Von Solms
Keyword(s):  
Coal Combustion ◽  
Regional Climate ◽  
Fixed Bed ◽  
Research Centre ◽  
Biomass Combustion ◽  
Formation Mechanisms ◽  
Carbonaceous Aerosols ◽  
Coal Burning ◽  
Organic Particles ◽  
Residential Coal

Residential coal combustion is one of the most significant sources of carbonaceous aerosols in the Highveld region of South Africa, significantly affecting the local and regional climate. In this study, we investigated single coal-burning particles emitted when using different fire-ignition techniques (top-lit up-draft vs bottom-lit up-draft) and air ventilation rates (defined by the number of air holes above and below the fire grate) in selected informal braziers. Aerosol samples were collected on nucleopore filters at the Sustainable Energy Technology and Research Centre Laboratory, University of Johannesburg. Individual particles (~700) were investigated using a scanning electron microscope equipped with energy-dispersive X-ray spectroscopy (EDS). Two distinct forms of spherical organic particles (SOPs) were identified, one less oxidized than the other. The particles were further classified into "electronically" dark and bright. EDS analysis showed that 70% of the dark spherical organic particles had higher (~60%) relative oxygen content than in the bright SOPs. We quantified the morphology of spherical organic particles and classified them into four categories: ~50% are bare single particles; ~35% particles are aggregated and form diffusion accretion chains; 10% have inclusions, and 5% are deformed due to impaction on filter material during sampling. We conclude that there are two distinct kinds of coal burning spherical organic particles and that dark SOPs are less volatile than bright SOPs. We also show that these spherical organic particles are similar in nature and characteristics to tar balls observed in biomass combustion and that they have the potential to absorb sunlight thereby affecting the earth’s radiative budget and climate. This study provides insights into the mixing states, morphology, and possible formation mechanisms of these organic particles from residential coal combustion in informal stoves.

Comprehensive Chemical Fingerprinting of Chamomile Extracts using UPC2/MS

Planta Medica ◽  
2013 ◽  
Vol 79 (05) ◽  
Author(s):  
M Jones ◽  
B Avula ◽  
YH Wang ◽  
K Yu ◽  
TJ Smillie ◽  
...  
Keyword(s):  
Chemical Fingerprinting

Inorganic and organic chemical characteristics and sources of suspended particulate matters in Ulaanbaatar, Mongolia

2020 ◽  
Vol 54 (4) ◽  
pp. 267-276
Author(s):  
Koshi Yamamoto ◽  
Yuta Suzuki ◽  
Gochoobazar Oyunjargal ◽  
Hiroyuki Fukuda ◽  
Munkhtsetseg Oidov ◽  
...  
Keyword(s):  
Organic Chemical ◽  
Chemical Characteristics ◽  
Particulate Matters ◽  
Suspended Particulate ◽  
Suspended Particulate Matters ◽  
Inorganic And Organic

EXPERIMENTAL STUDIES ON THE CORROSION OCCURRENCE DURING BIOMASS COMBUSTION PROCESS

2012 ◽  
Vol 11 (9) ◽  
pp. 1555-1560 ◽  
Author(s):  
Ionel Pisa ◽  
Gheorghe Lazaroiu ◽  
Corina Radulescu ◽  
Lucian Mihaescu
Keyword(s):  
Combustion Process ◽  
Experimental Studies ◽  
Biomass Combustion
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