Wey M Y, Chao C Y, Chen J C, Yu L J
Department of Environmental Engineering, Chung-Hsing University, Taichung, Taiwan R.O.C.
J Air Waste Manag Assoc. 1998 Aug;48(8):750-6. doi: 10.1080/10473289.1998.10463725.
Heavy metal and polycyclic aromatic hydrocarbons (PAHs) in flue gas have received considerable attention in recent years due to their mutagenic or carcinogenic properties. The present study is carried out to investigate the influence of the quantity of heavy metals on PAHs formation in fly ash. A fluidized bed incinerator was used in this experiment to obtain fly ash of chemical similarity by incinerating various compositions of waste. The obtained fly ash, both with and without heavy metal, were used to adsorb the PAHs in the flue gas and to investigate the formation of PAHs in fly ash. The results indicate that carbon and heavy metals most greatly influence the formation of PAHs in the fly ash. Carbon is absorptive; heavy metals encourage not only absorption of PAHs but also catalyze PAHs formation.
近年来，由于烟气中的重金属和多环芳烃（PAHs）具有致突变或致癌特性，它们受到了广泛关注。本研究旨在探讨重金属含量对飞灰中多环芳烃形成的影响。本实验使用流化床焚烧炉，通过焚烧各种成分的废物来获得化学性质相似的飞灰。所获得的含重金属和不含重金属的飞灰，均用于吸附烟气中的多环芳烃，并研究飞灰中多环芳烃的形成。结果表明，碳和重金属对飞灰中多环芳烃的形成影响最大。碳具有吸附性；重金属不仅促进多环芳烃的吸附，还催化多环芳烃的形成。
