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Pollutants in incineration flue gas.
1Department of Environmental Engineering, Chung-Hsing University, Taichung 402, Taiwan, ROC. mywey@green.nv.nchu.edu.tw
Journal of Hazardous Materials
|March 10, 2001
Summary
Incineration conditions impact pollutant formation. This study reveals how temperature and organic type affect emissions, detailing relationships between pollutants like hydrogen chloride (HCl) and heavy metals such as chromium (Cr) and lead (Pb).
Area of Science:
- Environmental Science and Engineering
- Chemical Engineering
- Pollution Control
Background:
- Incineration is a common waste treatment method, but it generates various pollutants including heavy metals, organic compounds, particulate matter, and acid gases.
- Existing research often focuses on single pollutants, lacking a comprehensive understanding of the interrelations between multiple pollutants under diverse incineration conditions.
Purpose of the Study:
- To experimentally investigate the influence of different operating conditions on emitted pollutants during incineration.
- To analyze the relationships between various pollutants under varying incineration parameters.
Main Methods:
- Experimental study focusing on the effects of combustion chamber temperature and the type of organic feedstock.
- Analysis of emitted pollutants, including hydrogen chloride (HCl), chromium (Cr), lead (Pb), and polycyclic aromatic hydrocarbons (PAHs).
Main Results:
- Hydrogen chloride (HCl) concentration was higher when polyvinyl chloride (PVC) was used as feedstock compared to sodium chloride (NaCl).
- Chromium (Cr) concentration remained constant irrespective of the chlorine-containing feedstock, but influenced polycyclic aromatic hydrocarbon (PAH) formation when organic chloride was present.
- Lead (Pb) emerged as the major metallic element influencing PAH formation when inorganic chloride (NaCl) was used.
Conclusions:
- Operating conditions significantly affect the type and concentration of pollutants emitted during incineration.
- The interplay between different pollutants, such as organic chlorides, inorganic chlorides, and metallic elements, is crucial in determining the overall emission profile, particularly concerning PAH formation.