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Journal of Environmental Science and Health, Part A
Toxic/Hazardous Substances and Environmental Engineering
Volume 42, 2007 - Issue 2
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ARTICLES

Simulating the transformation of heavy metals during coal or sewage sludge combustion

Jun Han State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan, Hubei, P.R. China
,
Minghou Xu State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan, Hubei, P.R. China
,
Hong Yao State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan, Hubei, P.R. China
,
Masami Furuuchi Graduate School of Natural Science and Technology, Kanazawa University, Kodatsuno, Kanazawa, Ishikawa, Japan
,
Takeo Sakano Graduate School of Natural Science and Technology, Kanazawa University, Kodatsuno, Kanazawa, Ishikawa, Japan
&
Hee Joon Kim Department of Ecological Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi, Japan
Pages 217-224 | Received 17 May 2006, Published online: 02 Mar 2007
 
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Abstract

A mathematical model (FPM) is presented to predict the transformation of heavy metals in the downstream of combustor or incinerator. The model accounts for the transformation of heavy metals through the combined effect of condensation,_nucleation, coagulation, external force and thermophoresis force. The calculation of heavy metals is embodied in the post-processor appended to Fluent soft. Before the simulation, velocity, temperature, PbCl2 concentration and other initial parameters are obtained by experiment. In addition, the transformation of PbCl2 is also experimentally studied. The comparison of experimental and predicted results indicate that the fine particle model (FPM) is valid for predicting the transformation of heavy metals in the downstream of incinerator or combustor.

Acknowledgments

This work has been partly supported by the National Natural Science Foundation of China (Grant No. 50576026) the National Key Basic Research and Development Program of China (Grant No. 2002CB211602).

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