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A batch-type, controlled-air incinerator was used for the treatment of oily sludge and plastic waste mixtures. Those concentration and composition of 21 individual PAHs(Polycyclic Aromatic Hydrocarbon) in the rawwastes, flue gas ( gas and Particle phases), and ash were determined. Stack flue-gas samples were collected by a PAH stack-sampling system. Twenty one individual PAHs were analyzed promarily by a gas chromatography and a gas chromatography/mass spectrometer. Total-PAH concentration in flue gas and its composition in ash averaged 648ug/m3 and 3.03 ug/g, respectively. Phase distribution of total-PAH in the flue gas was mainly in gas phase (93.5%) with a mean-concentration of 606ug/m3, while the total-PAH concentration in particle phase (averaged 42.0ug/m3) only represented a small fraction (6%) for the total-PAH mass collected. In the gas phase of stack flue-gas, Nap had highest mean- concentration (495ug/m3), while DBA had lowest mean- concentration (0.61ug/m3) among these twenty one individual PAHs. In the particle phase, COR and CHR were found to be with highest and lowest mean-concentration (COR:13.4ug/m3 and CHR: 0.24ug/m3), respectively. In ash, BaA had highest mean- composition (0.40ug/g), while Flu had lowest mean-composition (0.04 ug/g). After evalution the PAHs mass from three input sources (diesel , ambient air, and waste mixtures) of incinerator, the diesel was found to be with the highest fraction (averaged 99.5) entered the incinerator. The PAH-mass input/output ratio were between 0.004 and 0.289. This results indicated that most of PAHs entered the incinerator had been destroyed during the combustion process. THerefore, the oily sludge treated by the incineration process can reduce the total- PAH mass been discharged to the environment.
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