Partitioning of Harmful Elements in PM10 from Air-and Oxy-Coal Combustion: Iron and Sulfur

2013 ◽  
Vol 726-731 ◽  
pp. 963-966
Author(s):  
Jian Qun Wu ◽  
Dun Xi Yu ◽  
Lan Lan He ◽  
Jun Chen ◽  
Meng Ting Si ◽  
...  
Keyword(s):  
Coal Combustion ◽  
Ultrafine Particles ◽  
Bituminous Coal ◽  
Ultrafine Particle ◽  
Airborne Particulate Matter ◽  
Fuel Combustion ◽  
Drop Tube ◽  
Airborne Particulate ◽  
X Ray ◽  
Adverse Health Effects

Adverse health effects of Fe and S in airborne particulate matter (PM) have been reported. However, little work has been done to characterize Fe and S in PM10 from coal combustion. In this study, a sub-bituminous coal (coal A) and a bituminous coal (coal B) were subjected to combustion in a drop tube furnace under air-and oxy-firing conditions. Size distribution and elemental composition of PM10 (PM with aerodynamic diameter 10 μm) were obtained by low pressure impactor and X-ray fluorescence techniques, respectively. The partitioning characteristics of Fe and S in PM10 were investigated. Data shows that particles of ~0.1μm contains the highest concentration of Fe for both coals under different combustion conditions. The concentration of Fe in the ultrafine particle mode decreases when switching from air combustion to oxy-fuel combustion with 21% O2. It increases when the oxygen concentration increases from 21% to 32% O2 during oxy-fuel combustion. Changing combustion conditions has little effects on Fe partitioning in particles >0.3μm. The concentration of S in PM10 increases with decreasing particle size, but changing combustion conditions have inconclusive influence. Fe and S are dominant elements in ultrafine particles, indicating a greater threat to human health.

scholarly journals Emission Behaviors of Inorganic Ultrafine Particles during Zhundong Coal Oxy-Fuel Combustion with Characterized Oxygen Input Fractions Comparable to Air Combustion

2018 ◽  
Vol 8 (9) ◽  
pp. 1486 ◽  
Author(s):  
Bin Fan ◽  
Chang Wen ◽  
Xianpeng Zeng ◽  
Jianqun Wu ◽  
Xin Yu
Keyword(s):  
Ultrafine Particles ◽  
Large Scale ◽  
Temperature Drop ◽  
Fuel Combustion ◽  
Low Rank ◽  
High Yield ◽  
Drop Tube ◽  
Aerodynamic Diameter ◽  
Ca 50 ◽  
Zhundong Coal

Zhundong low-rank coal is very likely to be utilized extensively in oxy-fired boilers in the near future. Its PM10 (particulate matter with an aerodynamic diameter of ≤10 μm) emission behaviors during oxy-fuel combustion need to be carefully studied before its large-scale use. The present study examines the emission behaviors of inorganic ultrafine particles (PM0.5, with an aerodynamic diameter of ≤0.5 μm), as well as PM10 during the combustion of Zhundong coal in air and oxy-fuel conditions (O2/CO2) at three characterized O2 input fractions, i.e., 21, 27 and 32 vol.%. The combustion experiments were carried out in a high-temperature drop-tube furnace (HDTF) at a combustion temperature of 1500 °C. The results show that PM0.5 is composed of Na, S, Mg and Ca, with total fractions of ~90%, while PM0.5–10 (with an aerodynamic diameter between 0.5 and 10 μm) predominantly contains Ca (~50–65%). At three characterized oxygen fractions during oxy-fuel combustion (OXY21, 27 and 32), the promoted O2 fraction was found to increase the yields of both PM0.5 and PM0.5–10. A higher particle-burning temperature and a lower CO2 fraction promote the reactions of both organically bound elements and inorganic minerals, increasing the partitioning of Mg and Ca and causing an increased yield of PM0.5. The yield of PM0.5 from air is high and similar to that from OXY32 while the yield of PM0.5–10 from air is similar to that from OXY27. The high yield of PM0.5 from air is mainly generated by the highest yields of Ca in four conditions.

Some Data on Elemental Composition of Airborne Particulate Matter in the Northern Negev Desert, Israel

1994 ◽  
Vol 21 (4) ◽  
pp. 342-346 ◽  
Author(s):  
Zvi Y. Offer ◽  
Yosef Steinberger
Keyword(s):  
Particulate Matter ◽  
Glass Fibre ◽  
Airborne Particulate Matter ◽  
High Volume ◽  
Negev Desert ◽  
Airborne Particulate ◽  
X Ray ◽  
Airborne Concentration ◽  
The Mean ◽  
High Concentrations

Airbone particulate samples were collected during 1989 in the northern Negev desert, Israel, using two Sierra ultra-high-volume dust samplers with cascade impactors on glass-fibre filters. A total of 12 elements were detected, of which only eight were present in relatively high concentrations, as was indicated by using an x-ray spectra XL-LINK system. During the study period, the mean annual airborne concentration was 102 μg·m−3, with a minimum and maximum concentration of 0.17 and 1.376 μg·m−3 per 12 hours, respectively. Eight elements (A1, Si, Ca, S, K, Cl, Fe, and Ti) were found in relatively high concentrations.

scholarly journals Collection of Airborne Particulate Matter for a Subsequent Analysis by Total Reflection X-Ray Fluorescence.

1995 ◽  
Vol 11 (3) ◽  
pp. 495-498 ◽  
Author(s):  
Reinhold KLOCKENKÄMPER ◽  
Hanne BAYER ◽  
Alex von BOHLEN ◽  
Martina SCHMELING ◽  
Dieter KLOCKOW
Keyword(s):  
Particulate Matter ◽  
Airborne Particulate Matter ◽  
Total Reflection ◽  
Airborne Particulate ◽  
X Ray

Degradation potential of airborne particulate matter at the Alhambra monument: a Raman spectroscopic and electron probe X‐ray microanalysis study

2012 ◽  
Vol 43 (11) ◽  
pp. 1570-1577 ◽  
Author(s):  
Sanja Potgieter‐Vermaak ◽  
Benjamin Horemans ◽  
Willemien Anaf ◽  
Carolina Cardell ◽  
René Van Grieken
Keyword(s):  
Particulate Matter ◽  
Electron Probe ◽  
Airborne Particulate Matter ◽  
Airborne Particulate ◽  
X Ray ◽  
Raman Spectroscopic
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