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Received March 6, 2002
Accepted April 24, 2002
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Particle Size Distribution of PM-10 and Heavy Metal Emission with Different Temperature and HCl Concentrations from Incinerators
Dept. of Environ. Eng., Yonsei University, Yonsei Inst. of Environ. Sci. & Tech., Wonju 220-710, Korea 1Air Quality Res. Dept., Air Pollution Eng. Div., Nat’l Inst. of Environ. Res., Incheon 404-170, Korea 2EQS Team, Asiana Airport Services, Inc., Seoul 157-240, Korea
Korean Journal of Chemical Engineering, November 2002, 19(6), 1030-1036(7), 10.1007/BF02707229
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Abstract
Emission characteristics of particulate matter and heavy metals from 12 small waste incinerators, whose capacity ranged from 25 to 200 kg/h of waste, were investigated to determine the factors affecting the particulate matter generation and growth mechanisms. The ratio of fine particles to coarse particles increased with the flue gas temperature. Particulate matter showed bimodal forms in particle size distributions. The finer particle mode in particle size distribution shifted toward the coarser particle mode with a decrease in flue gas temperature. Experimental results were in agreement with coagulation theory: It is thought that the coarser particles were mechanically generated and the finer particles were generated by gas-to-particle conversion mechanisms such as nucleation, condensation, and coagulation. Heavy metal enrichment in finer particulate matter was also observed and related to particle formation and growth from vaporized metals. Emission of all heavy metals except zinc was affected by hydrogen chloride concentrations, while some metal emissions such as manganese, chromium, and copper were not varied with flue gas temperature.
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