Revealing the Mechanism of Dioxin Formation from Municipal Solid Waste Gasification in a Reducing Atmosphere
文献类型：期刊论文
| 作者 | Bei, Jianye; Xu, Xu; Zhan, Mingxiu; Li, Xiaodong; Jiao, Wentao ; Khachatryan, Lavrent; Wu, Angjian
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| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2022-09-20 |
| 期号 | 0页码:1-11 |
| 关键词 | DIBENZO-P-DIOXINS GAS-PHASE FORMATION DE-NOVO SYNTHESIS FLY-ASH KINETIC-MODEL TO-ENERGY CHLORINE COMBUSTION PYROLYSIS PCDD/FS |
| ISSN号 | 0013-936X |
| 英文摘要 | Gasification is an effective technology for the thermal disposal of municipal solid waste (MSW) with lower dioxin emission compared to the prevailing incineration process. Nevertheless, the mechanism of dioxin formation in the reducing atmosphere during the gasification process was seldomly explored. Herein, the effects of the atmosphere, temperature, and chlorine source were systematically investigated in terms of dioxin distribution. With CO2 and H2O as gasification agents, a reducing reaction atmosphere was formed with abundant H2 which effectively suppressed the generation of C-Cl, contributing to a substantial decrease of dioxin concentration by similar to 80% compared to the incineration process. The formation of dioxin was favored at temperatures below 700 degrees C with its peak concentration achieved at 500 degrees C. It was unveiled that inorganic chlorine played a dominant role in the reducing atmosphere, with a lower proportion of C-O-C/O-C �O on residual slag compared to an oxidizing atmosphere. Additionally, the generated H2 reduced the concentration of dioxins by attacking C-Cl and inhibiting the crucial Deacon reaction for dioxin formation, validated by density functional theory calculation. Eventually, the formation route paradigm and the reaction mechanism of dioxin formation from MSW gasification were revealed, facilitating and rationally guiding the control of dioxin emission. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47612]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 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.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 3.Louisiana State Univ, Dept Chem, Baton Rouge, LA 70803 USA 4.Zhejiang Univ, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bei, Jianye,Xu, Xu,Zhan, Mingxiu,et al. Revealing the Mechanism of Dioxin Formation from Municipal Solid Waste Gasification in a Reducing Atmosphere[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2022(0):1-11. |
| APA | Bei, Jianye.,Xu, Xu.,Zhan, Mingxiu.,Li, Xiaodong.,Jiao, Wentao.,...&Wu, Angjian.(2022).Revealing the Mechanism of Dioxin Formation from Municipal Solid Waste Gasification in a Reducing Atmosphere.ENVIRONMENTAL SCIENCE & TECHNOLOGY(0),1-11. |
| MLA | Bei, Jianye,et al."Revealing the Mechanism of Dioxin Formation from Municipal Solid Waste Gasification in a Reducing Atmosphere".ENVIRONMENTAL SCIENCE & TECHNOLOGY .0(2022):1-11. |
入库方式： OAI收割
来源：生态环境研究中心
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