A new mechanism and kinetic analysis for the efficient conversion of inorganic bromide in waste printed circuit board smelting ash via traditional sulfated roasting

doi:10.1016/j.jhazmat.2021.125394

GIEC OpenIR

	A new mechanism and kinetic analysis for the efficient conversion of inorganic bromide in waste printed circuit board smelting ash via traditional sulfated roasting
	Wu, Yufeng 1,2; Liu, Gongqi 1,2; Pan, De'an 1,2; Yuan, Haoran3 ; Li, Bin 1,2
	2021-07-05
发表期刊	JOURNAL OF HAZARDOUS MATERIALS
ISSN	0304-3894
卷号	413 页码:12
通讯作者	Wu, Yufeng(wuyufeng3r@126.com)
摘要	The waste printed circuit board smelting ash (WPCB-SA) produced in the waste printed circuit board smelting process is a hazardous material that not only contains valuable metals, but also contains a large amount of toxic and harmful inorganic bromides. The utilization of metals has received considerable attention in previous studies, but the recovery of hazardous bromides requires further study. In this article, a new idea of converting inorganic bromine in WPCB-SA by traditional sulfated roasting is proposed. Debromination kinetics under simulated experimental conditions are discussed, and kinetic equations are established. The kinetic results show that during low-temperature sulfated roasting, the conversion of Br in CuBr and PbBr2 conforms to the chemical reaction diffusion model and diffusion control the product layer model, respectively. A possible reaction mechanism is also proposed. Our research shows that the conversion of Br in CuBr is divided into three processes: covalent bond decomposition, hydrogen ion form acid, copper ion form salt, and HBr oxidation conversion, whereas the conversion of Br in PbBr2 is divided into two processes: sulfuric acid ionization, lead ion form salt and HBr oxidation conversion. This work provides the theoretical basis for the improvement and application of inorganic bromide recovery technology in WPCB-SA.
关键词	Waste printed circuit board smelting ash Sulfated roasting Debromination Kinetics Reaction mechanism
DOI	10.1016/j.jhazmat.2021.125394
关键词[WOS]	EXTRACTION ; PYROLYSIS ; RECOVERY ; EMISSION ; METAL ; ACID
收录类别	SCI
语种	英语
资助项目	Key Research and Development Plan of Guangdong Province[2019B110209001-4] ; National Key Research and Development Program of China[2018YFC1903104] ; National Key Research and Development Program of China[2018YFC1903603]
WOS研究方向	Engineering ; Environmental Sciences & Ecology
项目资助者	Key Research and Development Plan of Guangdong Province ; National Key Research and Development Program of China
WOS类目	Engineering, Environmental ; Environmental Sciences
WOS记录号	WOS:000647432700003
出版者	ELSEVIER
引用统计	被引频次：13[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/33167
专题	中国科学院广州能源研究所
通讯作者	Wu, Yufeng
作者单位	1.Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China 2.Beijing Univ Technol, Inst Circular Econ, Beijing 100124, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
推荐引用方式 GB/T 7714	Wu, Yufeng,Liu, Gongqi,Pan, De'an,et al. A new mechanism and kinetic analysis for the efficient conversion of inorganic bromide in waste printed circuit board smelting ash via traditional sulfated roasting[J]. JOURNAL OF HAZARDOUS MATERIALS,2021,413:12.
APA	Wu, Yufeng,Liu, Gongqi,Pan, De'an,Yuan, Haoran,&Li, Bin.(2021).A new mechanism and kinetic analysis for the efficient conversion of inorganic bromide in waste printed circuit board smelting ash via traditional sulfated roasting.JOURNAL OF HAZARDOUS MATERIALS,413,12.
MLA	Wu, Yufeng,et al."A new mechanism and kinetic analysis for the efficient conversion of inorganic bromide in waste printed circuit board smelting ash via traditional sulfated roasting".JOURNAL OF HAZARDOUS MATERIALS 413(2021):12.