Basic Research on the Emission of Polycyclic Aromatic Hydrocarbons caused by Waste Incineration

PAH Emissions from the Fluidized-Bed Incineration of an Industrial Sludge

“…The increase of PAH emissions at a higher temperature was attributed to a rapid devolatilization and the resulting local fuel-rich atmosphere. 8 The CO concentration in their flue gases was irrelevant to the PAH emission rate. 8 Corry et al 9 burned two refinery lagoon sludges spiked with hazardous components as selected from those listed in 40 CFR, part 261, Appendix VIII.…”

“…8 The CO concentration in their flue gases was irrelevant to the PAH emission rate. 8 Corry et al 9 burned two refinery lagoon sludges spiked with hazardous components as selected from those listed in 40 CFR, part 261, Appendix VIII. A destruction and removal efficiency of greater than 99.99% for the principal organic hazardous constituents of toluene, phenol, and naphthalene was readily achieved at 691 °C with approximately 100% excess air in their fluidized-bed incinerator.…”

“…Such "local oxygen-deficient" conditions result primarily from a rapid pyrolysis of waste during the feeding period. 8 In addition, the data associated with the low-temperature operations (500 and 600 °C) in this study might be used to represent the fault-mode operations of large-scale incinerators. The 16 priority pollutant PAHs were identified and quantified in the flue gases.…”

“…6 These PAHs, as a type of polycyclic organic matter (POM), have been regulated as hazardous air pollutants under Title III of the U.S. Clean Air Act Amendments of 1990. 7 Yasuda et al 8 studied PAH emissions from the incineration of artificially prepared municipal solid wastes in a fluidized-bed incinerator at approximately 700 and 900 °C. They found that PAH emissions increased at higher incinerating temperatures and as the plastics content in their feed increased.…”

“…Furthermore, most of these studies were carried out under fuel-lean conditions at normal operating temperatures, due to the impracticality of variation of the experimental parameters in a large-scale facility and the necessity of maintaining normal operation, as required by the owners. 2,4,8,9 The objective of this study, therefore, was to systematically examine the effects of temperature and equivalence ratio upon the PAH emissions from a laboratory-scale fluidized-bed incinerator. The burnt waste was a sludge from a wastewater treatment plant located in a general industrial park.…”