Treatment Effectiveness of Dioxin Emission from Diesel Engine and Human Exposure from Exhaust of Incinerator
Date Issued
2007
Date
2007
Author(s)
Huang, Hui-Yan
DOI
zh-TW
Abstract
This dissertation work was conducted with two main objectives. One was to investigate factors associated with the dioxin discharge from diesel engines, and the other was using second hand data to measure whether the dioxin burden among community residents living near the municipal waste incinerators (MWIs) associated with the ambient concentration of dioxin from the MWIs.
For the first study, we discussed the association between the contents of organic chloro compounds in the diesel fuel and the amount of dioxin produced. The concentration of dioxin generated from diesel engine was affected by the size of carbon granule and the completion of combustion. A serried experiments were conducted using diesel fuel brands T1 and T2 for the comparison. The average 2 dioxin concentration was higher in the dark smoke than that in the moderate and light smokes when the test was conducted for T1 samples, but not T2 samples. Experiments were also conducted to test the effects of various conditions. The dioxin levels increased as RM and CO increased.
In the other study, we used meta-analysis to sumarize the data obtained from the Environmental Protection Administration, Executive Yuan for the 19 MWIs surveyed in 1999-2003 based on the atmospheric dispersion model. The mean levels of PCDD/FS were the highest in zones A (downwind areas), followed by zones B and C (the side areas) and the least in zones D (background areas). However, there were no distinct differences for mean serum dioxin levels in the blood samples among zones. On the other hand, the age-specific average serum dioxin concentration increased from 13.3 pg WHO-TEQ/g lipid among 18-25 years old subjects to 23.5 pg WHO-TEQ/g lipid among 56-65 years old subjects. The findings suggest that the serum dioxin levels are associated with other sources.
Subjects
柴油有機氯化物
戴奧辛
柴油引摰
organic chloro compounds in the diesel fuel
dioxin
diesel engine
SDGs
Type
thesis
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