Thermochemical emission and transformation of chlorinated paraffins in inert and oxidizing atmospheres

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

	Thermochemical emission and transformation of chlorinated paraffins in inert and oxidizing atmospheres
	Wang, Yawei; Jiang, Guibin; Gao, Wei; Xin, Shanzhi
刊名	CHEMOSPHERE
	2017-09-01
卷号	185 期号:0 页码:899-906
关键词	Thermochemical Mccps Sccps Chlorinated Aromatic Hydrocarbons
英文摘要	Chlorinated paraffins (CPs) generally function as flame retardants and plasticizers in various materials. They are most likely to be processed by thermal processes during the entire life cycle. However, data on the formation and emission of CPs during thermal processes are still not fully understood. In this study, we simulated industrial thermal processes to investigate the emission of medium-chain chlorinated paraffins (MCCPs) and short-chain chlorinated paraffins (SCCPs) using commercial CP52 as the feedstock. We found that CP52 decomposed very easily at 210-320 degrees C. The decomposition of CPs generated large quantities of MCCPs and SCCPs. These remained in the residue at low temperature (similar to 200 degrees C) and were gradually released into the gas phase at higher temperatures. MCCPs and SCCPs were not detected in either the residue or the gas phase when the temperature exceeded 400 degrees C. However, considerable concentrations of aromatic and chlorinated aromatic hydrocarbons (Cl-PAHs) were identified in the gas phase, and they were formed as the amount of SCCPs and MCCPs decreased. Cl-PAHs were dominated by low-chlorinated chlorobenzenes, polychlorinated biphenyls, and polychlorinated naphthalenes. Oxygen promoted the release and decomposition of SCCPs in the gas phase. The results of the present study revealed the release of MCCPs and SCCPs and their synergistic emission with CI-PAHs when CPs were subjected to heat. This work may also provide data for developing multiple techniques to control the emission of CPs and Cl-PAHs. (C) 2017 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/39440]
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, Yawei,Jiang, Guibin,Gao, Wei,et al. Thermochemical emission and transformation of chlorinated paraffins in inert and oxidizing atmospheres[J]. CHEMOSPHERE,2017,185(0):899-906.
APA	Wang, Yawei,Jiang, Guibin,Gao, Wei,&Xin, Shanzhi.(2017).Thermochemical emission and transformation of chlorinated paraffins in inert and oxidizing atmospheres.CHEMOSPHERE,185(0),899-906.
MLA	Wang, Yawei,et al."Thermochemical emission and transformation of chlorinated paraffins in inert and oxidizing atmospheres".CHEMOSPHERE 185.0(2017):899-906.