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题名: Treatment of PCDD/Fs and PCBs in fly ash extracts under mild conditions
作者: Yang, ZJ;  Xia, CH;  Zhang, Q;  Chen, JP;  Wu, WZ;  Liang, XM;  Kettrup, A
关键词: palladium/carbon ;  catalytic hydrodehalogenation ;  dioxin-like pollutants ;  fly ash
刊名: FRESENIUS ENVIRONMENTAL BULLETIN
发表日期: 2006
卷: 15, 期:2, 页:86-94
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Life Sciences & Biomedicine
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
英文摘要: A highly efficient catalytic hydrodehalogenation method for polyhalogenated organic compounds, including toxic dioxin-like pollutants, was applied to the treatment of hazardous solid wastes, such as municipal waste incineration fly ash. The catalyst of palladium/carbon (5%, w/w) showed higher activities for fly ash extracts during reaction at 40 degrees C under normal pressure in water-isopropanol solution, and some other interesting phenomena were found. Either ordinary or trace-quantity components, almost all of the polyhalogenated organic compounds, especially dioxin-like pollutants, in fly ash extracts were dehalogenated with more than 99% conversion within 6.5 h. The use of water was maintaining the higher catalytic activities of Pd/C catalyst for dehalogenation of aromatic halides and dioxin-like compounds, and was decreasing the costs of treatment. Isopropanol in the reaction system was increasing the solubilities of polyhalogenated organic compounds and accelerating the hydrodehalogenation rates by offering protons in the catalytic reaction. This hydrodehalogenation reaction was suitable for the treatment of dioxin-like pollutants in real environmental samples, and has significance in the practical application.
关键词[WOS]: SUPPORTED PALLADIUM CATALYSTS ;  DIBENZO-PARA-DIOXINS ;  CHLORINATED DIOXINS ;  AROMATIC HALIDES ;  ROOM-TEMPERATURE ;  P-DIOXINS ;  HYDRODECHLORINATION ;  HYDRODEHALOGENATION ;  DECHLORINATION ;  DEHALOGENATION
语种: 英语
WOS记录号: WOS:000235286200001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140105
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Xinxiang Med Coll, Xinxiang 453003, Peoples R China
3.Tech Univ Munich, Dept Biosci, Weihenstephan Ctr Life & Food Sci, D-85350 Freising Weihenstephan, Germany
4.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Yang, ZJ,Xia, CH,Zhang, Q,et al. Treatment of PCDD/Fs and PCBs in fly ash extracts under mild conditions[J]. FRESENIUS ENVIRONMENTAL BULLETIN,2006,15(2):86-94.
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