TY - JOUR
T1 - Emissions of polycyclic aromatic hydrocarbons (PAHs) from the pyrolysis of scrap tires
AU - Chen, Shui Jen
AU - Su, Hung Bin
AU - Chang, Juu En
AU - Lee, Wen Jhy
AU - Huang, Kuo Lin
AU - Hsieh, Lien Te
AU - Huang, Yi Chu
AU - Lin, Wen Yinn
AU - Lin, Chih Chung
N1 - Funding Information:
The authors would like to thank the Taiwan National Science Council for financially supporting this research under Contract No. NSC92-2211-E-020-009.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2007/2
Y1 - 2007/2
N2 - This work investigated the PAHs generated in a waste-tire pyrolysis process and the PAHs removal by a wet scrubber (WSB) and a flare. IND, DBA, and BaP were found to dominate in the powders of scrap tires before the pyrolysis. The PAHs in the carbon blacks formed in the pyrolysis were mainly 2-, 3-, 6-, and 7-ring PAHs. Nap was the most predominant water-phase PAH in the WSB effluent. About 40% of the water-phase total-PAHs in the WSB effluent were contributed by nine carcinogenic PAHs. NaP, IND, and COR displayed higher mean gas- and particulate-phase concentrations than the other PAHs in the flare exhaust. The mean removal efficiencies of individual PAHs, total-PAHs, and high carcinogenic BaP+IND+DBA were 39.1-90.4%, 76.2%, and 84.9%, respectively for the WSB. For the flare, the mean removal efficiencies of gaseous, particulate, and combined (gaseous+particulate) total-PAHs were 59.8%, 91.2%, and 66.8%, respectively, whereas the removal efficiencies were 91.0%, 80.1%, and 89.1%, respectively for the total-BaPeq. However, the gaseous BaA displayed a negative mean removal efficiency. The total PAH emission rate and factor estimated for the scrap tire pyrolysis plant were 42.3 g d-1 and 4.00 mg kg-tire-1, respectively.
AB - This work investigated the PAHs generated in a waste-tire pyrolysis process and the PAHs removal by a wet scrubber (WSB) and a flare. IND, DBA, and BaP were found to dominate in the powders of scrap tires before the pyrolysis. The PAHs in the carbon blacks formed in the pyrolysis were mainly 2-, 3-, 6-, and 7-ring PAHs. Nap was the most predominant water-phase PAH in the WSB effluent. About 40% of the water-phase total-PAHs in the WSB effluent were contributed by nine carcinogenic PAHs. NaP, IND, and COR displayed higher mean gas- and particulate-phase concentrations than the other PAHs in the flare exhaust. The mean removal efficiencies of individual PAHs, total-PAHs, and high carcinogenic BaP+IND+DBA were 39.1-90.4%, 76.2%, and 84.9%, respectively for the WSB. For the flare, the mean removal efficiencies of gaseous, particulate, and combined (gaseous+particulate) total-PAHs were 59.8%, 91.2%, and 66.8%, respectively, whereas the removal efficiencies were 91.0%, 80.1%, and 89.1%, respectively for the total-BaPeq. However, the gaseous BaA displayed a negative mean removal efficiency. The total PAH emission rate and factor estimated for the scrap tire pyrolysis plant were 42.3 g d-1 and 4.00 mg kg-tire-1, respectively.
UR - http://www.scopus.com/inward/record.url?scp=33845949043&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33845949043&partnerID=8YFLogxK
U2 - 10.1016/j.atmosenv.2006.09.041
DO - 10.1016/j.atmosenv.2006.09.041
M3 - Article
AN - SCOPUS:33845949043
SN - 1352-2310
VL - 41
SP - 1209
EP - 1220
JO - Atmospheric Environment
JF - Atmospheric Environment
IS - 6
ER -