Abstract
Gaseous elemental and gaseous reactive mercury emitted from the incineration of automobile shredder residues (ASR) was monitored continuously. Most of gaseous mercury was reactive one before fabric filter (FF). Although 51% of total gaseous mercury was decreased by FF, concentration of gaseous elemental mercury was increased. It implied that the reduction of reactive mercury was occurred on the surface of FF. Emission factors of gaseous elemental and gaseous reactive mercury were estimated to be 59.4 mg-Hg/Mg-ASR and 39.3 mg-Hg/Mg-ASR, respectively. When any air pollutant control devices was not considered, these emission factors were increases to be 37.9 mg-Hg/Mg-ASR and 154 mg-Hg/Mg-ASR, respectively. If all of ASR in Japan was incinerated without effective pollutant control devices, total emissions of gaseous elemental and gaseous reactive mercury were estimated to be 30 kg and 0.1 Mg, respectively. When the emission of particulate mercury is counted, total mercury emission from ASR incineration increases to about 1 Mg.
