Formation behavior of PAHs during pyrolysis of waste tires
文献类型：期刊论文
| 作者 | Ye, Wenwen; Xu, Xu; Zhan, Mingxiu; Huang, Qunxing; Li, Xiaodong; Jiao, Wentao ; Yin, Yongguang
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| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2022-08-05 |
| 卷号 | 435期号:0页码:128997 |
| ISSN号 | 0304-3894 |
| 关键词 | POLYCYCLIC AROMATIC-HYDROCARBONS CATALYTIC FAST PYROLYSIS FORMATION MECHANISM ORGANIC-COMPOUNDS SEWAGE-SLUDGE TG-FTIR BIO-OIL TEMPERATURE DEGRADATION PRODUCTS |
| 英文摘要 | Polycyclic aromatic hydrocarbons (PAHs) formation from the pyrolysis of waste tires is inevitable because of the complexity of tire formulations and the addition of certain chemicals. In this study, the formation behavior and distribution of PAHs in three-phases were investigated from waste tires under pyrolysis conditions. The influencing factors including the temperature, heating rate, holding time, particle size, catalyzer, and atmosphere, were systematically evaluated. The results showed that PAHs were mainly concentrated in pyrolysis oil (94.59-99.03%), followed by the gas phase (0.96-5.34%), and their content was very low in the solid phase (0.01-0.99%). A higher temperature and slower heating rate lead to partial PAHs decomposition, thus reducing their emissions. The overall formation of PAHs can be inhibited when pyrolyzing coarse-grained tire powder. Furthermore, the PAHs formation mechanisms in waste tires were determined through reaction molecular dynamics, electron paramagnetic resonance, and intermediate products. Tires were mainly decomposed into benzene series, *C2H3, and *CH3; therefore, it was determined that PAHs were formed by the joint action of the hydrogen abstraction, and vinyl radical addition and methyl addition cyclization mechanisms. Among them, low and middle-ring PAHs were formed more easily, particularly naphthalene. The generation of PAHs can be inhibited by reducing the concentration of hydrocarbons and monocyclic benzene series. Regarding the distribution law and generation pathways of PAHs, our results provide guidance for reducing PAHs formation and emissions. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47656]  |
| 专题 | 生态环境研究中心_环境纳米材料实验室 |
| 通讯作者 | Zhan, Mingxiu |
| 作者单位 | 1.China Jiliang Univ, Coll Metrol & Measurement Engn, Hangzhou 310018, Zhejiang, Peoples R China 2.Zhejiang Univ, Inst Thermal Power Engn, State Key Lab Clean Energy Utilizat, Hangzhou 310058, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Haidian Dist, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ye, Wenwen,Xu, Xu,Zhan, Mingxiu,et al. Formation behavior of PAHs during pyrolysis of waste tires[J]. JOURNAL OF HAZARDOUS MATERIALS,2022,435(0):128997. |
| APA | Ye, Wenwen.,Xu, Xu.,Zhan, Mingxiu.,Huang, Qunxing.,Li, Xiaodong.,...&Yin, Yongguang.(2022).Formation behavior of PAHs during pyrolysis of waste tires.JOURNAL OF HAZARDOUS MATERIALS,435(0),128997. |
| MLA | Ye, Wenwen,et al."Formation behavior of PAHs during pyrolysis of waste tires".JOURNAL OF HAZARDOUS MATERIALS 435.0(2022):128997. |
入库方式： OAI收割
来源：生态环境研究中心
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