Thermal treatment of flame retardant plastics: A case study on a waste TV plastic shell sample

doi:10.1016/j.scitotenv.2019.04.264

	Thermal treatment of flame retardant plastics: A case study on a waste TV plastic shell sample
	Yu, Shaoqi 1; Su, Weiping 1; Wu, Daidai 2; Yao, Zhitong 1,3; Liu, Jie 1; Tang, Junhong 1; Wu, Weihong 1
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2019-07-20
卷号	675 页码:651-657
关键词	Electronic waste TV plastic shell Thermal treatment Acrylonitrile butadiene styrene Tetrabromobisphenol A
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2019.04.264
通讯作者	Yao, Zhitong(ztyao@hdu.edu.cn) ; Wu, Weihong(jchwwh@163.com)
英文摘要	In this work, the combustion and pyrolysis characteristics of a waste TV plastic shell sample were investigated using a powerful Thermogravimetric-Fourier Infrared Spectrum-Mass Spectrum (TG-FTIR-MS) technique. The decomposition mechanisms of plastic waste and fate of bromines in both thermal processes were probed as well. The TG analysis revealed that the combustion rate was larger than that of pyrolysis at temperature of 456 degrees C below, whereas it decreased at temperature of 456-605 degrees C. As a result, the total weight loss was equivalent at temperature of 605 degrees C for both processes. The FTIR analysis indicated the plastic combusted vigorously at 300-500 degrees C and 800-900 degrees C. As a comparison, it decomposed drastically at 300-400 degrees C and 500-900 degrees in pyrolysis. The MS analysis showed that the release of brominated products HBr, CH3Br, C2H5Br, C3H5Br, C3H7Br and C3H5BrO increased with an increase of temperature and reached maximum at 400-600 degrees C in both thermal processes. The release intensities of larger molecules C6H5Br, C6H5BrO and C6H4Br2 were in the descending order of C6H5Br > C6H4Br2 > C6H5BrO. It was not significant in the evolved products and decomposition pathway for both thermal processes. The entire decomposition of TV plastic shell sample could be divided into three stages, taking account of the evolved products. The backbone in acrylonitrile butadiene styrene resin and tetrabromobisphenol A first broke at 350 degrees C below, resulting in the form of 2-bromophenol, styrene, acrylonitrile and polybutadiene. Subsequently, the resulted 2-bromophenol debrominated forming HBr, which further reacted with hydrocarbons resulting in various brominated derivates. In addition, many small molecules, including CO2, CO and CH4 were generated in this stage. Further increasing temperature to 550 degrees C above, larger brominated derivates decomposed and smaller molecules predominated. (C) 2019 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China[51606055] ; Zhejiang Provincial Natural Science Foundation of China[LY19B070008] ; Key Laboratory for Solid Waste Management and Environment Safety Open Fund[SWMES2017-01]
WOS关键词	CO2 ; DEGRADATION ; ADSORPTION ; WEEE
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000467391900061
资助机构	National Natural Science Foundation of China ; Zhejiang Provincial Natural Science Foundation of China ; Key Laboratory for Solid Waste Management and Environment Safety Open Fund
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/24963]
专题	中国科学院广州能源研究所
通讯作者	Yao, Zhitong; Wu, Weihong
作者单位	1.Hangzhou Dianzi Univ, Coll Mat & Environm Engn, Hangzhou 310018, Zhejiang, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China 3.Tsinghua Univ, Minist Educ China, Key Lab Solid Waste Management & Environm Safety, Beijing 100084, Peoples R China
推荐引用方式 GB/T 7714	Yu, Shaoqi,Su, Weiping,Wu, Daidai,et al. Thermal treatment of flame retardant plastics: A case study on a waste TV plastic shell sample[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,675:651-657.
APA	Yu, Shaoqi.,Su, Weiping.,Wu, Daidai.,Yao, Zhitong.,Liu, Jie.,...&Wu, Weihong.(2019).Thermal treatment of flame retardant plastics: A case study on a waste TV plastic shell sample.SCIENCE OF THE TOTAL ENVIRONMENT,675,651-657.
MLA	Yu, Shaoqi,et al."Thermal treatment of flame retardant plastics: A case study on a waste TV plastic shell sample".SCIENCE OF THE TOTAL ENVIRONMENT 675(2019):651-657.