Field study and theoretical evidence for the profiles and underlying mechanisms of PCDD/F formation in cement kilns co-incinerating municipal solid waste and sewage sludge

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境化学与生态毒理学国家重点实验室

	Field study and theoretical evidence for the profiles and underlying mechanisms of PCDD/F formation in cement kilns co-incinerating municipal solid waste and sewage sludge
	Wang, Mei; Zhao, Yuyang; Zhan, Jiayu; Liu, Guorui; Ren, Zhiyuan; Zheng, Minghui; Jin, Rong; Yang, Lili; Zhang, Xian; Jiang, Xiaoxu
刊名	WASTE MANAGEMENT
	2017-09-05
卷号	61 期号:0 页码:337-344
关键词	Cement Kiln Co-incineration Polychlorinated Dibenzo-p-dioxins Polychlorinated Dibenzofurans Municipal Solid Waste Municipal Sewage Sludge
英文摘要	A field study and theoretical calculations on the profile and formation mechanism of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) from two cement kilns co-incinerating municipal solid waste and sewage sludge were performed, and the PCDFs were mainly focused. The back-end areas of the cement kilns were identified to be the major sites of PCDD/F formation according to their distributions in particulate samples from different process stages. The proportions of tetra- to hexachlorinated dibenzofurans (Sigma Cl(4-6)CDFs) at the kiln back -end areas were in the range of 50-80% of the total PCDD/Fs in mass concentrations and 62-87% in toxic equivalent concentrations. These results indicated that Sigma Cl(4-6)CDFs are the dominant homologs that should be the focus for reducing PCDD/F emissions in cement kilns that co-incinerate municipal solid waste and sewage sludge. It is speculated that the low contents of oxygen.and copper compounds, as well as the alkaline conditions, may contribute to the dominance of Sigma Cl(4-6)CDFs in the PCDD/Fs formed. Chlorination was assumed to be the mechanism of formation of PCDFs. The results from model predictions and thermodynamic calculations used to test this assumption were consistent with the PCDF profiles observed from the field study. (C) 2016 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/39315]
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
推荐引用方式 GB/T 7714	Wang, Mei,Zhao, Yuyang,Zhan, Jiayu,et al. Field study and theoretical evidence for the profiles and underlying mechanisms of PCDD/F formation in cement kilns co-incinerating municipal solid waste and sewage sludge[J]. WASTE MANAGEMENT,2017,61(0):337-344.
APA	Wang, Mei.,Zhao, Yuyang.,Zhan, Jiayu.,Liu, Guorui.,Ren, Zhiyuan.,...&Jiang, Xiaoxu.(2017).Field study and theoretical evidence for the profiles and underlying mechanisms of PCDD/F formation in cement kilns co-incinerating municipal solid waste and sewage sludge.WASTE MANAGEMENT,61(0),337-344.
MLA	Wang, Mei,et al."Field study and theoretical evidence for the profiles and underlying mechanisms of PCDD/F formation in cement kilns co-incinerating municipal solid waste and sewage sludge".WASTE MANAGEMENT 61.0(2017):337-344.