Polycyclic aromatic hydrocarbons and organic matter associated to particulate matter emitted from atmospheric fluidized god coal combustion

The polycyclic aromatic hydrocarbons (PAH) and the organic matter (OM) cont ent associated with particulate matter (PM) emissions from atmospheric flui dized bed coal combustion have been studied. The two main aims of the work have been (a) to study OM and PAH emissions as a function of the coal fluid ized bed combustion (FBC) variables in solid phase and (b) to check if ther e is any correlation between OM and PAH contained in the PM. The combustion was carried out in a laboratory scale (D-i = 7 cm and H = 76 cm) plant at different combustion conditions: temperature (650-950 degrees C), percentag e of oxygen excess (5-40%), and total air flow (700-1100 L/h). PAH associat ed on the particulate matter have been analyzed by fluorescence spectroscop y in the synchronous mode (FS) after PM extraction by sonication with dimet hylformamide (DMF). It can be concluded that there is not a direct relation ship between the OM content and the PAH supported in the PM emitted. In add ition, neither PM or OM show dependence between themselves.