Research on emissions and mitigation of POP's from combustion sources

摘要: The environmental consequences of persistent organic pollutants (POP's) are increasing concern due to the serious health effects on animals and humans including reproduction, development immunological function. Several major classes POP's, polycyclic aromatic hydrocarbons (PAH's), chlorobenzenes, chlorinated dioxins furans, have been identified as products incomplete combustion (PIC's) produced in trace levels systems. A wide variety processes, ranging from power plants, industrial boilers, furnaces incinerators, home heating devices, believed be potential sources POP's. Full-scale facilities can significant POP's large mass flow flue gas released a plant. Total emissions small such wood stoves residential oil furnaces, also numbers existing units near high population areas. It becomes increasingly important understand formation different processes identify develop strategies for their prevention mitigation. Research POP conducted by EPA is largely driven need regulating hazardous air required Title III 1990 Clean Air Act Amendments Resource Conservation Recovery Act. This paper provides summary EPA's research control with emphasis source characterization measurement, destruction mechanisms, cleaning. Laboratory experiments examine PAH pulverized coal utility boilers stoves, shown that they exhibit widely emission characteristics. Waste incineration National Risk Management Laboratory, Pollution Prevention Control Division (NRMRL/APPCD) has complex physical mixing chemical kinetics, involved PIC's. indicated ultra-trace chlorinated-dioxins -furans combustion/incineration includes interaction several factors temperature, chlorine content catalyst. beneficial effect sulfur sorbents dioxin demonstrated. Laboratory's effort evaluate state-of-the-art technologies on-line measurements PAH's, volatile PIC's, furans discussed. promising applying artificial-intelligence-based systems improving operating conditions approach